BiOBr/硅藻土光催化降解四环素的研究
作者:
张茜雅;刘玲斐;宁滔文;林立
期刊:
中国抗生素杂志 ,2020年45(8):781-785 ISSN:1001-8689
作者机构:
湖南城市学院材料与化学工程学院, 益阳, 413000
关键词:
光催化;BiOBr/硅藻土;四环素
摘要:
本文以Bi(NO_3)_3.5H_2O、KBr和硅藻土为原料,采用直接水解法制备了BiOBr/硅藻土复合光催化剂。以四环素为目标降解污染物,探讨了制备得到的催化剂用量,pH值和光源种类对四环素光催化去除效率的影响,同时结合反应动力学对四环素光催化降解过程进行了深入探讨。结果表明:在四环素初始浓度为30mg/L,催化剂投加量为0.10g,pH值为6和50W LED紫光灯照射的最优条件下,反应50min后四环素降解率达到91.3%,光催化反应过程更符合二级反应动力学规律。
语种:
中文
展开
试验设计与数据处理课程教学改革与研究
作者:
林立
期刊:
科教文汇(下旬刊) ,2017年(19):63-64 ISSN:1672-7894
作者机构:
[林立] 湖南城市学院材料与化学工程学院 湖南·益阳 413000
关键词:
试验设计与数据处理;教学改革;教学研究
摘要:
本文结合试验设计和数据处理的教学工作,从教学内容、教学方法和结合实践教学的角度,就课程教学改革提出了自己的体会,认为搞好该课程的教学需要从专业特点和课程体系出发,结合实践教学过程进行强化。
语种:
中文
展开
新型硅藻土/BiOX(I、Br、Cl)复合光催化剂的制备、表征及其光催化性能
作者:
林立;刘欢;董超南;易斌
期刊:
湖南城市学院学报(自然科学版) ,2017年26(3):74-78 ISSN:1672-7304
作者机构:
湖南城市学院 材料与化学工程学院,湖南 益阳,413000;[刘欢; 易斌; 董超南; 林立] 湖南城市学院
关键词:
硅藻土;水热法;光催化剂
摘要:
以五水硝酸铋、KX(X=Cl、Br、I)、硅藻土为原料,采用水热法合成负载有BiOX(Br、I、Cl)的新型硅藻土光催化材料,并进行了XRD和SEM表征分析,同时采用罗丹明B为目标降解物,以50 W LED紫光/蓝光灯为光源考察了制备光催化剂的可见光光催化性能﹒结果表明,制备的Bi OX/硅藻土复合催化剂均有可见光催化活性,PVP辅助条件下制备的BiOI/硅藻土具有最佳的光催化活性,罗丹明B初始浓度15 mg/L,催化剂用量0.15 g,LED蓝光照射50 min,降解率达到96%﹒
语种:
中文
展开
转型地方本科院校学生工程实践能力培养
作者:
刘长辉;王锋;林立;胡拥军;龙立平
期刊:
广东化工 ,2017年44(16):281-282 ISSN:1007-1865
作者机构:
湖南城市学院材料与化学工程学院,湖南益阳,413000;[刘长辉; 龙立平; 王锋; 林立; 胡拥军] 湖南城市学院
关键词:
工程实践能力;转型;地方本科院校;培养
摘要:
在地方本科院校向应用型转型发展的背景下,应用型本科院校人才培养质量的核心是工程实践能力。分析转型中的地方本科院校学生工程实践能力提升不明显的成因,并从评价体系、师资队伍建设、实践课程建设及管理体制和激励机制等主要方面探索应用型本科院校学生工程实践能力培养的措施,以提升学生的工程实践能力和应用型人才培养质量。
语种:
中文
展开
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.
关键词:
Energy dispersive spectroscopy;Fly ash;Heterojunctions;Light;Microspheres;Photocatalysis;Photocatalysts;Photodegradation;X ray spectroscopy;Energy dispersive X ray spectroscopy;Heterojunction structures;Hierarchical microspheres;Photocatalytic activities;Threedimensional (3-d);UV-visible diffuse reflectance spectroscopy;Visible-light irradiation;Visible-light photocatalysts;High resolution transmission electron microscopy
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
展开
BiOBr/BiOI Photocatalyst Based on Fly Ash Cenospheres with Improved Photocatalytic Performance
作者:
Lin, Li* ;Huang, Manhong;Chen, Donghui*
期刊:
Molecules ,2016年21(5):666 ISSN:1420-3049
通讯作者:
Lin, Li;Chen, Donghui
作者机构:
[Lin, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Chen, Donghui; Lin, L; Chen, DH; Huang, Manhong; Lin, Li] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.;[Chen, Donghui] Shanghai Inst Technol, Shanghai 200235, Peoples R China.
通讯机构:
[Lin, Li] H;[Lin, L; Chen, DH] D;[Chen, Donghui] S;Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.;Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
关键词:
BiOBr/BiOI;fly-ash cenospheres;photocatalytic activity;pH value
摘要:
A series of BiOBr/BiOI photocatalysts supported on fly-ash cenospheres (FACs) were successfully prepared via a facile one-pot alcoholysis method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectrometer (XPS) and UV-visible diffuse reflectance spectroscopy (DRS). The results indicate that pH value plays a critical role in BiOBr/BiOI loading. Based on the photodegradation tests under visible light irradiation (blue LED irradiation), the photocatalytic property of BiOBr/BiOI/FACs photocatalysts obtained under alkaline conditions is superior to that prepared under neutral or acidic conditions, and higher than those of BiOB/FACs and BiOI//FACs. The improved photocatalytic performance of BiOBr/BiOI/FACs can be attributed to more BiOBr/BiOI loaded on the surface of FACs and the efficient photogenerated electron-hole separation.
语种:
英文
展开
微生物燃料电池驱动的光电催化降解甲基橙
作者:
孙哲;林立;黄满红;陈东辉
期刊:
环境工程学报 ,2014年8(12):5383-5387 ISSN:1673-9108
通讯作者:
Chen, D.
作者机构:
[孙哲; 黄满红] State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China;School of Chemical and Environmental Engineering, Hunan City University, Yiyang, 413000, China;[陈东辉] School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 200235, China;[林立] State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China, School of Chemical and Environmental Engineering, Hunan City University, Yiyang, 413000, China
通讯机构:
[Chen, D.] S;School of Chemical and Environmental Engineering, China
关键词:
微生物燃料电池;Cu2O纳米线;光电催化;甲基橙;降解
摘要:
实验制备出了具有光催化性能的Cu2O纳米线电极,对比研究了Cu2O电极在光催化、微生物燃料电池驱动的电催化和微生物燃料电池驱动的光电催化反应过程中对甲基橙溶液的降解效果的影响。实验结果表明,微生物燃料电池驱动的光电催化反应对甲基橙的降解效果最好,当溶液p H为3、外加偏压为0.7 V、反应时间为40 min时,对甲基橙的降解率可以达到83%。实验首次利用微生物燃料电池作为外界驱动电压光电协同降解了甲基橙,证明在微生物燃料电池产生的较低电压也可以对光电极催化降解污染物的效率有提升。
语种:
中文
展开
Novel photocatalysts of fly ash cenospheres supported BiOBr hierarchical microspheres with high photocatalytic performance
作者:
Lin, Li;Huang, Manhong* ;Long, Liping;Chen, Donghui
期刊:
Journal of Alloys and Compounds ,2014年615:929-932 ISSN:0925-8388
通讯作者:
Huang, Manhong
作者机构:
[Chen, Donghui; Huang, Manhong; Lin, Li] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.;[Long, Liping; 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:
[Huang, Manhong] D;Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
关键词:
Bromine compounds;Fly ash;Irradiation;Light;Microspheres;Photodegradation;Scanning electron microscopy;X ray diffraction;BiOBr;Energy dispersive spectrometry;Fly ash cenospheres;Hierarchical microspheres;Photo-catalytic;Photocatalytic performance;UV-visible diffuse reflectance spectroscopy;Visible-light irradiation;Bismuth compounds
摘要:
A novel fly-ash cenospheres (FACs) supported BiOBr hierarchical microspheres were successfully prepared via a facile one-pot solvothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), UV-visible diffuse reflectance spectroscopy (DRS) and N2 adsorption-desorption isotherms. The results indicated that polyvinylpyrrolidone (PVP) facilitated the loading of BiOBr hierarchical microspheres. Based on the photodegradation tests under visible light irradiation (λ > 420 nm), the photocatalytic property of PVP/BiOBr/FACs photocatalysts was superior to that of BiOBr/FACs. © 2014 Elsevier B.V. All rights reserved.
语种:
英文
展开
Fabrication of a three-dimensional BiOBr/BiOI photocatalyst with enhanced visible light photocatalytic performance
作者:
Lin, Li;Huang, Manhong;Long, Liping;Sun, Zhe;Zheng, Wei;...
期刊:
Ceramics International ,2014年40(8):11493-11501 ISSN:0272-8842
通讯作者:
Chen, Donghui
作者机构:
[Chen, Donghui; Zheng, Wei; Huang, Manhong; Lin, Li; Sun, Zhe] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.;[Long, Liping; Lin, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构:
[Chen, Donghui] D;Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
关键词:
BiOBr/BiOI;Photocatalyst;Rhodamine B;Tetracycline;Visible light
摘要:
Three-dimensional (3D) BiOBr/BiOI hierarchical microsphere photocatalysts were successfully synthesized via a facile one-pot solvothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and N2 adsorption-desorption isotherms. The photocatalytic activity was evaluated by the photocatalytic degradation of Rhodamine B (RhB) and tetracycline (TC) under visible light irradiation (λ>420 nm). The 50% BiOBr/BiOI composite showed a higher photocatalytic removal efficiency of RhB and TC than 10% and 90% BiOBr/BiOI composites. RhB (C0=15 mg/L) was degraded completely within 40 min and over 83% of TC (C0= 40 mg/L) was degraded within 50 min using a catalyst quantity of 0.4 g/L of 50% BiOBr/BiOI. The enhanced photocatalytic activity of the 50:50 composite was attributed to effective separation of photogenerated carriers and the balance between enhanced visible light absorption and decreased valence band (VB) edge potential. © 2014 Elsevier Ltd and Techna Group S.r.l.
语种:
英文
展开
三组分铜铬催化剂催化甘油制备羟基丙酮的研究
作者:
谢丹;李浔;龙立平;肖谷清;林立
期刊:
广州化工 ,2012年40(12):93-95,126 ISSN:1001-9677
作者机构:
湖南城市学院化学与环境学院,湖南益阳,413000;长沙理工大学化学与生物工程学院,湖南长沙,410076;[李浔] 长沙理工大学;[谢丹; 龙立平; 林立; 肖谷清] 湖南城市学院
关键词:
生物质甘油;Cu-Cr-Zn催化剂;羟基丙酮
摘要:
用共沉淀法制备了Cu-Cr-Zn催化剂,考察了Cu/Cr/Zn比、沉淀温度、沉淀时pH值、煅烧温度等制备条件对甘油制备羟基丙酮的影响,并对催化剂进行了表征。结果表明:共沉淀法制备Cu-Cr-Zn催化剂具有较高的催化活性,而且其稳定性和再生能力较好,适宜催化剂制备条件为:Cu/Cr/Zn比为1∶1∶0.5,沉淀温度为70℃,沉淀时pH值为8.0,煅烧温度为400℃,羟基丙酮的选择性可达到90.2%。
语种:
中文
展开
Photocatalytic degradation glyphosate with cerium and nitrogen co-doped TiO2 under visible irradiation
作者:
Lin, Li* ;Zhang, Xuejun;Xiao, Guqing;Xiong, Xing
期刊:
Advanced Materials Research ,2012年430-432:1048-1051 ISSN:1022-6680
通讯作者:
Lin, Li
作者机构:
[Xiao, Guqing; Xiong, Xing; Lin, Li; Zhang, Xuejun] Hunan City Univ, Dept Chem & Environm Engn, Changsha 413000, Hunan, Peoples R China.
通讯机构:
[Lin, Li] H;Hunan City Univ, Dept Chem & Environm Engn, Changsha 413000, Hunan, Peoples R China.
会议名称:
the 2012 International Conference on Frontiers of Advanced Materials and Engineering Technology (2012年先进材料与工程技术国际会议(FAMET 2012))
会议时间:
2012-01-04
会议地点:
厦门
会议主办单位:
[Lin, Li;Zhang, Xuejun;Xiao, Guqing;Xiong, Xing] Hunan City Univ, Dept Chem & Environm Engn, Changsha 413000, Hunan, Peoples R China.
会议论文集名称:
the 2012 International Conference on Frontiers of Advanced Materials and Engineering Technology (2012年先进材料与工程技术国际会议(FAMET 2012))论文集
关键词:
Cerium;Photocatalytic;TiO2;Visible light
摘要:
Cerium and nitrogen co-doped TiO<inf>2</inf> nanocrystals were synthesized by a simple sol-gel process, using tetrabutyl titanate as the raw materials with (NH<inf>4</inf>)<inf>2</inf>Ce(SO<inf>4</inf>)<inf>3</inf> and urea as ion donors. The co-doped TiO<inf>2</inf> nanoparticles were characterized by X-ray diffraction and transmission electro microscopy. The photodegradation of glyphosate has been investigated in aqueous suspensions of doped TiO<inf>2</inf> under visible irradiation. The results exhibit a higher thermal stability of anatase than pure TiO<inf>2</inf>. The uniform test results show the optimal conditions: n<inf>Ce</inf>/n<inf>Ti</inf> n<inf>N</inf>/n<inf>Ti</inf> and calcining temperature was 0.08, 0.01 and 800°C. The highest degradation rate for co-doped TiO<inf>2</inf> show five times photocatalytic activity of Degussa P25. ©(2012) Trans Tech Publications.
语种:
英文
展开
Anatase TiO2 Nano-particles Preparation With Neutralization Hydrolysis Technique and Photocatalytic Performance
作者:
Lin, Li* ;Lei, Cunxi;Zhou, Jicheng
期刊:
Advanced Materials Research ,2010年113-116(229):1639-1643 ISSN:1022-6680
通讯作者:
Lin, Li
作者机构:
[Lei, Cunxi; Lin, Li] Hunan City Univ, Dept Chem & Environm Engn, Hunan City 413000, Peoples R China.;[Zhou, Jicheng] Xiangtan Univ, Dept Chem Engn, Xiangtan 411105, Peoples R China.
通讯机构:
[Lin, Li] H;Hunan City Univ, Dept Chem & Environm Engn, Hunan City 413000, Peoples R China.
会议名称:
2010 International Conference of Environment Materials and Environment Management, EMEM 2010
会议时间:
24 July 2010 through 25 July 2010
会议地点:
哈尔滨
会议主办单位:
[Lin, Li;Lei, Cunxi] Hunan City Univ, Dept Chem & Environm Engn, Hunan City 413000, Peoples R China.^[Zhou, Jicheng] Xiangtan Univ, Dept Chem Engn, Xiangtan 411105, Peoples R China.
会议论文集名称:
2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)论文集
关键词:
neutralization hydrolysis;TiO2 nanomaterial;photocatalytic
摘要:
A neutralization hydrolysis route has been used to synthesize titanium oxide nanoparticles. Transmission electron microscopy(TEM) and X-ray diffraction(XRD) characterization results showed the TiO2 nanoparticles were single anatase phases when calcined at 600°C-800°for 2h. The particle diameter ranged from 15 to 30nm. The pH value was key factor for precursor composition. When pH value 2-4, the H2TiO3 precursor with low agglomeration was obtained. As-prepared anatase TiO 2 nanoparticles, during photodegradation of methylic orange under UV-light irradiation(λ=254nm), exhibited excellent activity, more than 95.5% methylic orange was degraded in 1h. © (2010) Trans Tech Publications, Switzerland.
语种:
英文
展开