A red-emitting fluorescent probe for hydrogen sulfide in living cells with a large Stokes shift
作者：
Yang, Lei;Su, Yuanan;Sha, Zhankui;Geng, Yani;Qi, Fengpei;...
期刊：
Organic & Biomolecular Chemistry ,2018年16(7):1150-1156 ISSN：1477-0520
通讯作者：
Song, Xiangzhi
作者机构：
[Qi, Fengpei; Song, Xiangzhi; Yang, Lei; Su, Yuanan; Geng, Yani] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Sha, Zhankui] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China.;[Qi, Fengpei] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Song, Xiangzhi] C;Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
摘要：
A red-emitting fluorescent probe was developed for the sensitive and selective detection of H2S. Upon treatment with H2S, this probe exhibited a remarkable fluorescence enhancement (10 fold) with a large Stokes shift (125 nm). The detection limit of this probe was as low as 5.7 nM based on S/N = 3. The application of this probe in the detection of intracellular H2S in living cells is successfully demonstrated.
语种：
英文
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以PEG为分散剂从废绿矾中回收Fe_3O_4
作者：
Peng, Ying-lin;Yu, Wang;Zheng, Ya-jie*
期刊：
中国有色金属学报(英文版) ,2018年28(7):1465-1474 ISSN：1003-6326
通讯作者：
Zheng, Ya-jie
作者机构：
[Peng, Ying-lin] Hunan City Univ, Sch Mat & Chem Engn, Yiyang 413000, Peoples R China.;[Yu, Wang; Zheng, Ya-jie] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Zheng, Ya-jie] C;Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China.
关键词：
ferrous sulfate;Fe_3O_4;PEG;co-precipitation;magnetic separation;wet milling
摘要：
The effect of PEG dispersant on the magnetic separation of magnetite (Fe<inf>3</inf>O<inf>4</inf>) synthesized from ferrous sulfate solution via co-precipitation method with calcium hydroxide as the precipitant was investigated. The results indicated that a PEG dispersant could significantly affect Fe<inf>3</inf>O<inf>4</inf> recovery. Adding PEG during the preparation of Fe<inf>3</inf>O<inf>4</inf> was unfavorable for Fe<inf>3</inf>O<inf>4</inf> recovery. When the PEG-6000 concentration was increased from 0 to 8 g/L, the iron grade and median particle size of the Fe<inf>3</inf>O<inf>4</inf> product decreased from 65.58% and 2.35 μm to 57.79% and 1.35 μm, respectively. However, adding PEG during the wet milling of the mixed product promoted the subsequent recovery of Fe<inf>3</inf>O<inf>4</inf>. When the amount of PEG-200 increased from 0% to 4% of the powder mass, the grade of iron in the Fe<inf>3</inf>O<inf>4</inf> product increased from 65.58% to 68.32%. While the relative molecular mass of PEG at an amount of 4% of the powder mass increased from 200 to 20000, the grade of iron was reduced from 68.32% to 66.70%.<br/> ©2018 The Nonferrous Metals Society of China
语种：
英文
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Adsorption of phenol onto four hyper-cross-linked polymeric adsorbents: Effect of hydrogen bonding receptor in micropores on adsorption capacity
作者：
Xiao, Guqing* ;Wen, Ruimin;You, Peiqing;Wu, Dan
期刊：
Microporous and Mesoporous Materials ,2017年239:40-44 ISSN：1387-1811
通讯作者：
Xiao, Guqing
作者机构：
[Wen, Ruimin; Xiao, Guqing; You, Peiqing; Wu, Dan] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Guqing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
关键词：
Density functional theory;Hydrogen bonding receptor;Hyper-cross-linked adsorbent;Micropores
摘要：
Different functional group modified hyper-cross-linked polymeric adsorbents H103, GQ-1, GQ-2 and GQ-5 were synthesized from macroporous crosslinked chloromethylated styrene-divinylbenzene copolymers. Phenol was selected as a hydrogen bonding donator. The object of this work was to explore the effect of hydrogen bonding receptor in micropores of adsorbent on adsorption capacity. Results showed the BET surface area and pore volume followed the order H103 > GQ-5 > GQ-2 > GQ-1 while the adsorption capacity of phenol onto the four hyper-cross-linked polymeric adsorbents followed the order GQ-1 > GQ-2 > GQ-5 > H103. The density functional theory indicated that hydrogen bonding receptor in micropores of the adsorbents was a crucial factor for the adsorption capacity order. ©2016 Elsevier Inc.
语种：
英文
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Recovery of iron from waste ferrous sulphate by co-precipitation and magnetic separation
作者：
Yu, Wang;Peng, Ying-lin;Zheng, Ya-jie*
期刊：
中国有色金属学报(英文版) ,2017年27(1):211-219 ISSN：1003-6326
通讯作者：
Zheng, Ya-jie
作者机构：
[Yu, Wang; Zheng, Ya-jie] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China.;[Peng, Ying-lin] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Zheng, Ya-jie] C;Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China.
关键词：
ferrous sulphate;titanium dioxide;magnetite concentrate;co-precipitation;wet milling;magnetic separation
摘要：
Magnetite concentrate was recovered from ferrous sulphate by co-precipitation and magnetic separation. In co-precipitation process, the effects of reaction conditions on iron recovery were studied, and the optimal reaction parameters are proposed as follows: n(CaO)/n(Fe~(2+)) 1.4:1, reaction temperature 80 °C, ferrous ion concentration 0.4 mol/L, and the final mole ratio of Fe~(3+) to Fe~(2+) in the reaction solution 1.9-2.1. In magnetic separation process, the effects of milling time and magnetic induction intensity on iron recovery were investigated. Wet milling played an important part in breaking the encapsulated magnetic phases. The results showed that the mixed product was wet-milled for 20 min before magnetic separation, the grade and recovery rate of iron in magnetite concentrate were increased from 51.41% and 84.15% to 62.05% and 85.35%, respectively.
语种：
英文
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Adsorption performance of salicylic acid on a novel resin with distinctive double pore structure
作者：
Xiao, Guqing* ;Wen, Ruiming;Liu, Aijiao;He, Guowen;Wu, Dan
期刊：
Journal of Hazardous Materials ,2017年329:77-83 ISSN：0304-3894
通讯作者：
Xiao, Guqing
作者机构：
[Xiao, Guqing; Wen, Ruiming; Liu, Aijiao; He, Guowen; Wu, Dan] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Guqing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
关键词：
Adsorption;Double pore structure;Multifunctional adsorption mechanism;Salicylic acid
摘要：
Two approaches were used to synthesize two resins with different pore structures. In one way, the [sbnd]CH<inf>2</inf>Cl groups in macroporous chloromethylated polystyrene resin were transformed to methylene bridges, and achieved a hypercrosslinked resin with plentiful micropores (denoted GQ-06). In the other way, 50% of the [sbnd]CH<inf>2</inf>Cl groups in chloromethylated polystyrene resin was used to produce micropores, while the residual 50% of the [sbnd]CH<inf>2</inf>Cl groups was reacted with 2-aminopyridine, and prepared another resin with double pore structure of hypercrosslinked resin and macroporous resin (denoted GQ-11). The adsorption of salicylic acid (SA) on GQ-11 was investigated using GQ-06 as the reference adsorbent. The effect of pH on the adsorption of SA on GQ-06 was consistent with the dissociation curve of SA. The maximum adsorption capacity of SA on GQ-11 was observed at the solution pH of 2.64. The greater adsorption rate of SA on GQ-11 than that of GQ-06 was attributed to its double pore structure. The multifunctional adsorption mechanism of anion exchange and hydrophobic interaction resulted in the larger equilibrium capacity of SA on GQ-11 than that of GQ-06. GQ-06 and GQ-11 could be regenerated by absolute alcohol and 80% of alcohol −0.5 mol/L of sodium hydroxide aqueous solution, respectively. ©2017 Elsevier B.V.
语种：
英文
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储氢介质甲基环己烷研究进展
作者：
王锋;杨运泉;胡拥军;曾永林
期刊：
化工进展 ,2017年36(2):538-547 ISSN：1000-6613
通讯作者：
Yang, Yunquan(yangyunquan@xtu.edu.cn)
作者机构：
[王锋; 胡拥军; Zeng, Yonglin] College of Chemical and Environmental Engineering, Hunan City University, Yiyang;Hunan;413000, China;[杨运泉] College of Chemical Engineering, Xiangtan University, Xiangtan;411105, China
关键词：
催化剂;催化剂载体;反应器;储氢;甲基环己烷
摘要：
甲基环己烷(MCH)作为最佳的液态有机氢化物储氢介质,是甲基环己烷-甲基-氢气(MTH)循环体系中的重要组成部分,但MCH催化脱氢过程所使用催化剂因低温活性欠佳及高温不稳定的问题导致MTH循环无法大规模应用。本文综述了MTH循环系统的应用现状和该系统中MCH脱氢过程催化剂的研究现状。重点概述了单、双金属催化剂设计现状,比较了不同催化剂性能的优劣。此外,还比较了各类催化剂释氢速率以及反应条件和催化反应器结构特点。分析表明,研发出低温高活性或高温高稳定性的催化剂有利于MCH脱氢过程;此外,开发出既能打破反应平衡限制又能强化传质和传热效果以及保持催化剂稳定性的车载催化反应器将会加速MTH循环的社会化应用进程。
语种：
中文
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Recovery of magnetite from FeSO_4·7H_2O waste slag by co-precipitation method with calcium hydroxide as precipitant
作者：
Yu Wang;Peng Ying-lin;Zheng Ya-jie*
期刊：
中南大学学报(英文版) ,2017年24(1):62-70 ISSN：2095-2899
通讯作者：
Zheng Ya-jie
作者机构：
[Yu Wang; Zheng Ya-jie] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China.;[Peng Ying-lin] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Zheng Ya-jie] C;Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China.
关键词：
FeSO_4·7H_2O;TiO_2 industry;magnetite;co-precipitation;calcium hydroxide;magnetic seeding flocculation
摘要：
Proper utilization of the FeSO_4·7H_2O waste slag generated from TiO_2 industry is an urgent need, and Fe_3O_4 particles are currently being widely used in the wastewater flocculation field. In this work, magnetite was recovered from ferrous sulphate by a novel co-precipitation method with calcium hydroxide as the precipitant. Under optimum conditions, the obtained spherical magnetite particles are well crystallized with a Fe_3O_4 purity of 88.78%, but apt to aggregate with a median particle size of 1.83 μm. Magnetic measurement reveals the obtained Fe_3O_4 particles are soft magnetic with a saturation magnetization of 81.73 A·m~2/kg. In addition, a highly crystallized gypsum co-product is obtained in blocky or irregular shape. Predictably, this study would provide additional opportunities for future application of low-cost Fe_3O_4 particles in water treatment field.
语种：
英文
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双氧水氧化碱浸分离铂钯精矿中硒碲热力学及实验研究
作者：
彭映林;马亚赟;张福元;郑雅杰
期刊：
中国有色金属学报 ,2017年27(2):430-438 ISSN：1004-0609
通讯作者：
Zheng, Ya-Jie(13974810738@163.com)
作者机构：
[彭映林] School of Chemistry and Environmental Engineering, Hunan City University, Yiyang, 413000, China;[张福元] Henan Province Key Laboratory of Gold Resource Utilization, Henan Zhongyuan Gold Smelter Co., Ltd., Sanmenxia, 472000, China;[马亚赟; 郑雅杰] School of Metallurgical and Environmental, Central South University, Changsha, 410083, China
通讯机构：
School of Metallurgical and Environmental, Central South University, Changsha, China
关键词：
沉金后液;铂精矿;钯精矿;硒;碲;氧化碱浸;热力学
摘要：
采用水合肼和盐酸羟胺复合还原沉金后液得到铂钯精矿,其中硒和碲总含量达到71.15%,金、铂和钯总含量达到3.65%,从铂钯精矿中分离硒碲对富集及回收贵金属金铂钯具有重要意义。热力学分析表明:在碱性条件下,采用双氧水作为氧化剂,可以将硒和碲氧化为高价态的离子化合物被浸出,金、铂和钯留在固相中。采用双氧水氧化碱浸分离铂钯精矿中硒碲,实验结果表明其适宜反应条件为:双氧水用量为250 mL/L,NaOH浓度为5 mol/L,反应温度为85 ℃,液固比为5:1(mL/g),反应时间为2 h,在此适宜条件下,硒和碲的浸出率分别为82.49%和92.45%,金、铂和钯均未被浸出。氧化碱浸后渣中贵金属总含量达到23.18%,相对铂钯精矿富集6.35倍。
语种：
中文
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石墨/聚四氟乙烯/玻璃纤维改性PA6的力学和摩擦磨损性能
作者：
游一兰;李笃信;刘士军;贺国文
期刊：
高分子材料科学与工程 ,2017年33(8):85-89 and 95 ISSN：1000-7555
通讯作者：
You, Yilan(hanbinzixuan@163.com)
作者机构：
[游一兰; 刘士军] College of Chemistry and Chemical Engineering, Central South University, Changsha;410083, China;[贺国文] College of Chemistry and Environmental Engineering, Hunan City University, Yiyang;413000, China;[李笃信] State Key Laboratory of Powder Metallurgy, Central South University, Changsha
通讯机构：
[You, Y.] C;College of Chemistry and Chemical Engineering, Central South University, Changsha, China
关键词：
聚酰胺6;混杂改性;摩擦磨损;力学性能
摘要：
采用石墨(Gr)、聚四氟乙烯(PTFE)和玻璃纤维(GF)改性聚酰胺6(PA6),以提高PA6的摩擦磨损性能和力学性能。重点研究了填料组合、配比、载荷和转速对复合材料摩擦磨损性能的影响,通过磨损表面形貌分析探讨了摩擦磨损机理。结果表明:Gr/PTFE/GF混杂改性PA6能明显降低摩擦系数并提高耐磨性,PA6/Gr/PTFE/GF质量比为70/5/10/15时摩擦系数和磨损率最低,且在高转速(40 N, 1500 r/min)下摩擦磨损性能更好,摩擦系数为0.08,比PA6降低了27%,磨损率为5.5×10~(-6) mm~3/(N·m),比PA6降低了1个数量级,且该复合材料的拉伸强度、冲击强度、储能模量和损耗模量都高于PA6。
语种：
中文
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${m{\alpha }}$-亚硝基-${m{\beta }}$-萘酣活化浮选氧化锌矿试验研究
作者：
孟维;莫红兵;周伟;许峰;徐伟箭;...
期刊：
湖南大学学报(自然科学版) ,2017年44(6):107-111 ISSN：1674-2974
通讯作者：
Xu, Weijian(weijxu@hnu.edu.cn)
作者机构：
[孟维; 许峰; 莫红兵; 欧恩才; 周伟; 徐伟箭] College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China;[孟维] Department of Materials &, Chemistry Engineering, Hunan City University, Yiyang, 413000, China
通讯机构：
College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
关键词：
${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚;十八胺;活化剂;氧化锌矿石;浮选
摘要：
采用${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚为活化剂和十八胺为捕收剂对氧化锌矿石浮选,并考察其作用机理.结果表明,活化剂、捕收剂、分散剂的类型和用量是影响锌的品位和回收率的主要因素,${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚是氧化辞矿石浮选的有效活化剂.用木质素磺酸钙作为分散剂,经 ${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚活化后,在${\rm{pH}} = 9.5$时,锌的品位从初始等级的22.30%达到了38.26%,回收率达到87.90%.红外光谱分析表明,在矿物表面${\rm{\alpha }}$-亚硝基-${\rm{\beta }}$-萘酚和${\rm{Z}}{{\rm{n}}^{2 + }}$配位通过Zn-O键形成六元环,从而增强矿物表面的疏水性.
语种：
中文
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Development of a near-infrared fluorescence turn-on probe for imaging Hg2+ in living cells and animals
作者：
Wang, Jiaoliang;Li, Weiling;Long, Liping*
期刊：
Sensors and Actuators B-Chemical ,2017年245:462-469 ISSN：0925-4005
通讯作者：
Long, Liping
作者机构：
[Wang, Jiaoliang; Long, Liping] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.;[Li, Weiling] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Long, Liping] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
CS dye;Mercury ion;NIR fluorescent probe;Vivo imaging
摘要：
Mercury is one of the deadly toxic metals to humans. A new fluorescent probe CS-Hg for Hg<sup>2+</sup>has been designed and synthesized based on the Hg<sup>2+</sup>-promoted cyclization and the CS NIR platform. The probe upon interaction with different metal ions showed good sensitivity and high selectivity for Hg<sup>2+</sup>through fluorescence “turn-on”response in PBS buffer. Significantly, the probe CS-Hg is highly reactive to Hg<sup>2+</sup>with a very rapid response. Furthermore, we have demonstrated that the probe is applicable for Hg<sup>2+</sup>imaging in the living cells and in animals. ©2017 Elsevier B.V.
语种：
英文
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NIR fluorescence detection of dopamine using 3-aminophenyl boronic acid-functionalized and lysozyme-templated gold nanoclusters
作者：
Zhong, Tongsheng* ;Yin, Zhifang;Gao, Peiyi;Huang, Shasheng*
期刊：
ANALYTICAL METHODS ,2017年9(23):3414-3417 ISSN：1759-9660
通讯作者：
Zhong, Tongsheng;Huang, Shasheng
作者机构：
[Zhong, Tongsheng; Yin, Zhifang] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Gao, Peiyi; Huang, Shasheng] Shanghai Normal Univ, Life & Environm Sci Coll, Shanghai 200234, Peoples R China.
通讯机构：
[Zhong, Tongsheng] H;[Huang, Shasheng] S;Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.;Shanghai Normal Univ, Life & Environm Sci Coll, Shanghai 200234, Peoples R China.
摘要：
In this communication, we report phenylboronic acid-functionalized gold nanoclusters (APBA-Lys-AuNCs) using lysozyme as a reducing reagent and capping ligand. Fluorescence quenching was performed for the selective detection of dopamine (DA) in human blood samples with satisfactory results. © The Royal Society of Chemistry 2017.
语种：
英文
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2-氨基吡啶修饰的超高交联树脂对水杨酸的吸附性能
作者：
文瑞明;游沛清;刘爱姣;肖谷清
期刊：
中南大学学报(自然科学版) ,2016年47(3):724-729 ISSN：1672-7207
通讯作者：
Wen, Ruiming(wenruiming@sohu.com)
作者机构：
[刘爱姣; 游沛清; 肖谷清; 文瑞明] College of Chemistry and Environmental Engineering, Hunan City University, Yiyang, 413000, China
通讯机构：
College of Chemistry and Environmental Engineering, Hunan City University, Yiyang, China
关键词：
2-氨基吡啶;超高交联树脂;水杨酸;吸附
摘要：
以二氯乙烷为溶剂,FeCl_3为催化剂,氯球发生Friedel-Crafts反应制备氯质量分数为6.32%的超高交联树脂(简记为GQ-09),将GQ-09树脂进一步用2-氨基吡啶修饰,制备超高交联树脂(简记为GQ-10),研究GQ-10树脂对水杨酸的吸附性能。实验结果表明:GQ-10树脂在pH为2.16时对水杨酸的吸附性能最好;GQ-10树脂对水杨酸的吸附等温线同时服从Langmuir方程和Freundlich方程;与树脂的孔结构对应,GQ-10树脂对水杨酸的吸附在2个时间段均适用准一级速率方程;GQ-10树脂对水杨酸的吸附既有阴离子交换,又存在酸碱作用和疏水作用。 GQ-10树脂吸附的水杨酸可用80%乙醇-0.5 mol/L NaOH解吸,解吸率为99.41%。
语种：
中文
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Comparative adsorption of glyphosate from aqueous solution by 2-aminopyridine modified polystyrene resin, D301 resin and 330 resin: Influencing factors, salinity resistance and mechanism
作者：
Xiao, Guqing* ;Wen, Ruimin
期刊：
Fluid Phase Equilibria ,2016年411:1-6 ISSN：0378-3812
通讯作者：
Xiao, Guqing
作者机构：
[Wen, Ruimin; Xiao, Guqing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Guqing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
关键词：
2- Aminopyridine modified polystyrene resin;Adsorption;Glyphosate;Salinity resistance
摘要：
Comparative adsorption of glyphosate from aqueous solution by 2-aminopyridine modified polystyrene resin (denoted GQ-08 resin), D301 resin and 330 resin was investigated with respect to influencing factors, salinity resistance and mechanism. Results showed the maximum adsorption capacity of glyphosate onto the three resins was observed at pH of 2.51, and glyphosate was adsorbed in the form of HOPO2-CH<inf>2</inf>NH2+CH<inf>2</inf>COOH and HOPO2-CH<inf>2</inf>NH2+CH<inf>2</inf>COO<sup>-</sup>. The adsorption capacity of glyphosate onto the three resins followed the order 330 resin >D301 resin >GQ-08 resin, consistent with their total exchange capability order. GQ-08 resin exhibited excellent salinity resistance. Salinity resistance of GQ-08 resin resulted from the hydrogen bonding for the adsorption of glyphosate, while 330 resin and D301 resin exhibited the single adsorption mechanism of anion exchange. ©2015 Elsevier B.V.
语种：
英文
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Effects of the hydrophobicity of adsorbate on the adsorption of salicylic acid and 5-sulfosalicylic acid onto the hydrophobic-hydrophilic macroporous polydivinylbenzene/polymethylacrylethylenediamine IPN
作者：
Xiao, Guqing* ;Wen, Ruiming;Wei, Dongmei
期刊：
Fluid Phase Equilibria ,2016年421:33-38 ISSN：0378-3812
通讯作者：
Xiao, Guqing
作者机构：
[Xiao, Guqing; Wen, Ruiming; Wei, Dongmei] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Guqing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
关键词：
5-Sulfosalicylic acid;Adsorption;Hydrophobic-hydrophilic;PDVB/PMAEM IPN;Salicylic acid
摘要：
Hydrophobic-hydrophilic macroporous polydivinylbenzene/polymethylacrylethylenediamine IPN (PDVB/PMAEM IPN) was synthesized indirectly through the strong forced compatibility. The effects of the hydrophobicity of adsorbate on the adsorption of salicylic acid and 5-sulfosalicylic acid onto the hydrophobic-hydrophilic PDVB/PMAEM IPN were investigated. PDVB/PMAEM IPN exhibited greater adsorption capacity of salicylic acid than that of 5-sulfosalicylic acid. The absolute values of δH, δG and δS of the adsorption of salicylic acid onto PDVB/PMAEM IPN were greater than those of 5-sulfosalicylic acid, indicating the adsorption of salicylic acid onto PDVB/PMAEM IPN was more welcome. Adsorption mechanism proved that greater adsorption capacity of salicylic acid onto PDVB/PMAEM IPN than that of 5-sulfosalicylic acid was attributed to the stronger hydrophobicity of salicylic acid. © 2016 Elsevier B.V.
语种：
英文
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Immobilization of BiOBr/BiOI Hierarchical Microspheres on Fly Ash Cenospheres as Visible Light Photocatalysts
作者：
Lin, Li;Wang, Ya;Huang, Manhong;Chen, Donghui*
期刊：
Australian Journal of Chemistry ,2016年69(1):119-125 ISSN：0004-9425
通讯作者：
Chen, Donghui
作者机构：
[Chen, Donghui; Wang, Ya; Huang, Manhong; Lin, Li] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.;[Lin, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Chen, Donghui] Shanghai Inst Technol, Shanghai 200235, Peoples R China.
通讯机构：
[Chen, Donghui] D;Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
摘要：
Three-dimensional (3D) BiOBr/BiOI hierarchical microspheres were successfully fabricated on the surface of fly ash cenospheres (FACs) via a facile one-pot solvothermal method for the first time. The as-prepared samples were characterized by XRD, SEM, energy-dispersive X-ray spectroscopy, UV-visible diffuse reflectance spectroscopy, and high-resolution transmission electron microscopy. The results indicated that the loaded hierarchical microspheres exhibited a uniform distribution, and some aggregation was observed. These well-dispersed hierarchical microspheres were composed of 2D nanosheets, which possess heterojunction structures. Based on the photodegradation tests examining the removal of rhodamine B from water under visible light irradiation (λ>420nm), the photocatalytic activity of BiOB/BiOI/FACs was superior to that of BiOBr/FACs and BiOI/FACs. A proposed mechanism for the enhanced photocatalytic activity displayed by BiOB/BiOI/FACs is discussed. © CSIRO 2016.
语种：
英文
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In Vivo Lighted Fluorescence via Fenton Reaction: Approach for Imaging of Hydrogen Peroxide in Living Systems
作者：
Liu, Changhui;Chen, Weiju;Qing, Zhihe* ;Zheng, Jing;Xiao, Yue;...
期刊：
Analytical Chemistry ,2016年88(7):3998-4003 ISSN：0003-2700
通讯作者：
Qing, Zhihe;Yang, Ronghua
作者机构：
[Liu, Changhui; Yang, Sheng; Yang, Ronghua; Qing, Zhihe] Changsha Univ Sci & Technol, Sch Chem & Biol Engn, Changsha 410004, Hunan, Peoples R China.;[Liu, Changhui] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Liu, Changhui; Wang, Lili; Xiao, Yue; Yang, Ronghua; Zheng, Jing; Li, Yinhui; Chen, Weiju] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemobiosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Qing, ZH; Yang, RH] C;[Yang, Ronghua] H;Changsha Univ Sci & Technol, Sch Chem & Biol Engn, Changsha 410004, Hunan, Peoples R China.;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemobiosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
摘要：
By virtue of its high sensitivity and rapidity, Fenton reaction has been demonstrated as a powerful tool for in vitro biochemical analysis; however, in vivo applications of Fenton reaction still remain to be exploited. Herein, we report, for the first time, the design, formation and testing of Fenton reaction for in vivo fluorescence imaging of hydrogen peroxide (H2O2). To realize in vivo fluorescence imaging of H2O2 via Fenton reaction, a functional nanosphere, Fc@MSN-FDNA/PTAD, is fabricated from mesoporous silica nanoparticle (MSN), a Fenton reagent of ferrocene (Fc), ROX-labeled DNA (FDNA), and a cationic perylene derivative (PTAD). The ferrocene molecules are locked in the pore entrances of MSN, and exterior of MSN is covalently immobilized with FDNA. As a key part, PTAD acts as not only the gatekeeper of MSN but also the efficient quencher of ROX. H2O2 can permeate into the nanosphere and react with ferrocene to product hydroxyl radical (·OH) via Fenton reaction, which cleaves FDNA to detach ROX from PTAD, thus in turn, lights the ROX fluorescence. Under physiological condition, H2O2 can be determined from 5.0 nM to 1.0 μM with a detection limit of 2.4 nM. Because of the rapid kinetics of Fenton reaction and high specificity for H2O2, the proposed method meets the requirement for real applications. The feasibility of Fc@MSN-FDNA/PTAD for in vivo applications is demonstrated for fluorescence imaging of exogenous and endogenous H2O2 in cells and mice. We expect that this work will not only contribute to the H2O2-releated studies but also open up a new way to exploit in vivo Fenton reaction for biochemical research. (Chemical Equation Presented). © 2016 American Chemical Society.
语种：
英文
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Effect of purification pretreatment on the recovery of magnetite from waste ferrous sulfate
作者：
Yu, Wang;Peng, Ying-lin;Zheng, Ya-jie*
期刊：
矿物冶金与材料学报：英文版 ,2016年23(8):891-897 ISSN：1674-4799
通讯作者：
Zheng, Ya-jie
作者机构：
[Yu, Wang; Zheng, Ya-jie] Cent S Univ, Sch Met & Environm, Changsha 410083, Peoples R China.;[Peng, Ying-lin] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Zheng, Ya-jie] C;Cent S Univ, Sch Met & Environm, Changsha 410083, Peoples R China.
关键词：
ferrous sulfate;titanium dioxide;purification;magnetite;magnetic separation
摘要：
The present study was conducted to elucidate the influence of impurities in waste ferrous sulfate on its recovery of magnetite. Ferrous sulfate solution was purified by the addition of NaOH solution to precipitate impurities, and magnetite was recovered from ferrous sulfate solution without and with purification pretreatment. Calcium hydroxide was added to the solution of ferrous sulfate as a precipitator. A mixed product of magnetite and gypsum was subsequently obtained by air oxidation and heating. Wet-milling was performed prior to magnetic separation to recover magnetite from the mixed products. The results show that with the purification pretreatment, the grade of iron in magnetite concentrate increased from 62.05% to 65.58% and the recovery rate of iron decreased from 85.35% to 80.35%. The purification pretreatment reduced the conglutination between magnetite and gypsum, which favors their subsequent magnetic separation. In summary, a higher-grade magnetite with a better crystallinity and a larger particle size of 2.35 μm was obtained with the purification pretreatment.
语种：
英文
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A graphene/ionic liquid modified selenium-doped carbon paste electrode for determination of copper and antimony
作者：
Liu, Rong;Lei, Cunxi* ;Zhong, Tongsheng;Long, Liping;Wu, Zhaoyang;...
期刊：
ANALYTICAL METHODS ,2016年8(5):1120-1126 ISSN：1759-9660
通讯作者：
Lei, Cunxi
作者机构：
[Zhong, Tongsheng; Zhang, Qi; Lei, Cunxi; Liu, Rong; Long, Liping] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Wu, Zhaoyang; Liu, Rong; Huan, Shuangyan] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Lei, Cunxi] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
摘要：
A graphene (GN) and ionic liquid (IL) modified selenium-doped carbon paste electrode (GN/IL/Se/CPE) was established to simultaneously determine trace Cu(ii) and Sb(iii) by differential pulse voltammetry (DPV). Several parameters which affect the stripping current response were investigated and optimized, including the proportion of Se powder, concentration of hydrochloric acid, deposition time and deposition potential. The DPV curves were recorded by simultaneous deposition of Cu(ii) and Sb(iii) at -0.4 V for 50 s in a supporting electrolyte solution HCl of 0.30 mol L-1. Under the optimized conditions, the GN/IL/Se/CPE sensor has a good linear response in the range of 2.0 × 10-6 to 7.0 × 10-5 mol L-1 for Cu(ii) and 2.0 × 10-6 to 4.0 × 10-5 mol L-1 for Sb(iii). The detection limits were 6.6 × 10-7 mol L-1 for Cu(ii) and 4.3 × 10-7 mol L-1 for Sb(iii). The sensor showed favorable stability and higher sensitivity. The present work extends the scope of these devices as mercury-free sensors and can be used to detect Cu(ii) and Sb(iii) simultaneously. © The Royal Society of Chemistry 2016.
语种：
英文
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A novel hyper-cross-linked polymeric adsorbent with high microporous surface area and its adsorption to theophylline from aqueous solution
作者：
Xiao, Guqing* ;Wen, Ruiming;Wei, Dongmei;Wu, Dan
期刊：
Microporous and Mesoporous Materials ,2016年228:168-173 ISSN：1387-1811
通讯作者：
Xiao, Guqing
作者机构：
[Xiao, Guqing; Wen, Ruiming; Wei, Dongmei; Wu, Dan] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Guqing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
关键词：
Hyper-cross-linked polymeric adsorbent;Microporous surface area;Adsorption;Theophylline
摘要：
According to the planar structure and the small molecular size of theophylline (TP), a novel hyper-cross-linked polymeric adsorbent with high microporous surface area (denoted GQ-06) was synthesized and its adsorption to TP was explored from aqueous solution. The results showed that GQ-06 possessed a high microporous surface area of 1223 m<sup>2</sup>/g and bimodal pore size distributions. The equilibrium adsorption capacity of TP on the five polymeric adsorbents followed an order as: XAD-4 <NDA-88 <H103 <NDA-150 <GQ-06, which was in agreement with the order of the microporous surface area. The adsorption as a function of the solution pH was accordant with the dissociation curve of TP from aqueous solution. The equilibrium adsorption capacity of TP on GQ-06 increased with increasing of the ionic strength due to the predominant contribution of the hydrophobic effect. The pseudo-first-order rate equation described the adsorption in two stages according to the bimodal pore size distributions. The adsorption isotherms were correlated to the Freundlich equation. The breakthrough capacity and the total capacity of TP on GQ-06 were up to 45.9 and 105.8 mg/mL respectively, and it could be regenerated by 4 BV of anhydrous ethanol. ©2016 Elsevier Inc. All rights reserved.
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英文
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