摘要：
Single-atom catalysts have wide application prospects in peroxydisulfate (PDS)-based advanced oxidation process to degrade organic pollutants, but its catalytic performance is limited due to its cost, Metal-N coordination number, and single-atom loading amount. Herein, a novel nitrogen doped algal-based carbon confined singleatom copper catalyst (Cu-N/C-SAC((S))) was synthesized using molten salt assisted pyrolysis and coupling with PDS to degrade tetracycline (TC). AC-HAADF-STEM and XAFS analysis proved that single atom Cu was loaded (Content 1.9 %) successfully and coordinated with two N and two C. XPS and XANES spectra analysis suggested that Cu atoms mainly existed in a positive divalent state in Cu-N/C-SAC(S). When the catalyst dosage of Cu-N/CSAC((S)) was 0.1 g/L, TC was almost completely removed. Moreover, Cu-N/C-SAC(S) had a broad pH adaptation range and strong ability against interference. Singlet oxygen (O-1(2)), superoxide radicals (center dot O-2(-)), and electron transfer had an important contribution for TC removal. DFT calculations confirmed that the activation process of Cu-N/C-SAC((S)) producing SO4 center dot- was easier than the nitrogen doped blue-green algal-based carbon (N-BGAC). In addition, Cu-N/C-SAC((S)) possessed good recyclability and stability. The main degradation pathways of TC were analyzed, and the toxicity of the intermediates was calculated. This study provides a new solution strategy for the resource utilization of waste biomass, and provides technical support and theoretical guidance for the efficient application of single-atom catalysts in organic wastewater.
摘要：
Based on the chemical modifications of the few-layer boron nitride nanosheets (BNNSs) prepared by ball milling, several BNNS/polyurethane (PU) composite films (non-laminated films) were prepared by solution blending. It showed that the modified BNNSs (M-BNNSs) in PU matrices assembled into boron nitride (BN) micro-flakes and mildly orientated along the film planes. Then, an approach of multi-folding and multi-laminating further pro-moted the orientation, stacking and connection of BN micro-flakes, by which a three-dimensional (3D) BN network composed of lamellar BN skeleton and a small number of BN linkers was in-situ constructed in the PU composite films (laminated films). For the existence of a continuous heat conductive channel based on the 3D BN network, the thermal conductivities (TCs) of the laminated films were obviously enhanced compared to the corresponding non-laminated films. The incorporation of M-BNNSs further improved the electrical insulation of the laminated films. When the M-BNNS content was 50 wt%, the in-plane TC of the laminated film reached 23.80 W/m & sdot;K. The laminated film with M-BNNS content of 30 wt% showed high TC, good flexibility, and outstanding electrical insulation, who is a promising candidate for the flexible thermal management materials.
期刊：
Journal of Applied Polymer Science,2024年141(1):e54756- ISSN：0021-8995
通讯作者：
Xiao, GQ
作者机构：
[Xiao, Guqing; Meng, Qiudong; Xie, Huixian; Song, Qingwen] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, GQ ] H;Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Peoples R China.
关键词：
adsorption;glyphosate;ionic radius;resins
摘要：
Abstract La3+ and Al3+ loaded D151 resin [R‐La and R‐Al, respectively] were used as salt‐resistant resins for the efficient adsorption of glyphosate. The results showed that La3+ with a larger ionic radius could accommodate more glyphosate as ligands, resulting in higher glyphosate adsorption capacity of R‐La than that of R‐Al. Both R‐La and R‐Al exhibited maximum adsorption capacities at pH 2.52, where glyphosate existed in its ionization equilibrium of pKa2. Consistent with the larger ionic radius of La3+, R‐La featured larger qm and KL than R‐Al at the same temperature. Owing to the smaller radius of Al3+, the enthalpy values for the coordination adsorption of glyphosate by R‐Al were larger than those of R‐La at the same adsorption capacity. Owing to the smaller radius of Al3+, R‐Al exhibited stronger coordination adsorption for glyphosate and significantly higher salt tolerance than R‐La. The adsorption mechanisms indicated that both R‐La and R‐Al could adsorb glyphosate through the coordination of La3+ and Al3+ with O atoms of the phosphonate group of glyphosate. At a NaCl concentration range of 0–16%, R‐Al featured excellent salt tolerance and highly stable glyphosate adsorption capacity than 330, D301, R‐La, and the 14 adsorbents reported in the literature.
摘要：
In the present work, the photodegradation of Rhodamine B with different pH values by using Bi(2)O(3) microrods under visible-light irradiation was studied in terms of the dye degradation efficiency, active species, degradation mechanism, and degradation pathway. X-ray diffractometry, polarized optical microscopy, scanning electron microscopy, fluorescence spectrophotometry, diffuse reflectance spectra, Brunauer-Emmett-Teller, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, UV-visible spectrophotometry, total organic carbon, and liquid chromatography-mass spectroscopy analysis techniques were used to analyze the crystal structure, morphology, surface structures, band gap values, catalytic performance, and mechanistic pathway. The photoluminescence spectra and diffuse reflectance spectrum (the band gap values of the Bi(2)O(3) microrods are 2.79 eV) reveals that the absorption spectrum extended to the visible region, which resulted in a high separation and low recombination rate of electron-hole pairs. The photodegradation results of Bi(2)O(3) clearly indicated that Rhodamine B dye had removal efficiencies of about 97.2%, 90.6%, and 50.2% within 120 min at the pH values of 3.0, 5.0, and 7.0, respectively. In addition, the mineralization of RhB was evaluated by measuring the effect of Bi(2)O(3) on chemical oxygen demand and total organic carbon at the pH value of 3.0. At the same time, quenching experiments were carried out to understand the core reaction species involved in the photodegradation of Rhodamine B solution at different pH values. The results of X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and X-ray diffractometer analysis of pre- and post-Bi(2)O(3) degradation showed that BiOCl was formed on the surface of Bi(2)O(3), and a BiOCl/Bi(2)O(3) heterojunction was formed after acid photocatalytic degradation. Furthermore, the catalytic degradation of active substances and the possible mechanism of the photocatalytic degradation of Rhodamine B over Bi(2)O(3) at different pH values were analyzed based on the results of X-ray diffractometry, radical capture, Fourier-transform infrared spectroscopy, total organic carbon analysis, and X-ray photoelectron spectroscopy. The degradation intermediates of Rhodamine B with the Bi(2)O(3) photocatalyst in visible light were also identified with the assistance of liquid chromatography-mass spectroscopy.
作者机构：
[Liu, Bangfu; Liu, BF] Hunan Elect Informat Ind Inst, Jiefangdonglu 51, Changsha 410000, Hunan, Peoples R China.;[Zhou, Le-zhou] Hunan Prevent & Treatment Inst Occupat Dis, Changsha 410007, Hunan, Peoples R China.;[He, Guo-wen] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.;[Wang, Chaoli] Air Force Mil Med Univ, Dept Pharm, Xian 710000, Shanxii, Peoples R China.
通讯机构：
[Liu, BF ] H;Hunan Elect Informat Ind Inst, Jiefangdonglu 51, Changsha 410000, Hunan, Peoples R China.
关键词：
Hydrophobic deep eutectic solvents;Stripping back extraction;Complexation;Metal ions;Three-phase separation
摘要：
In this paper, a green hydrophobic deep eutectic solvent (HDES) composed of menthol and hexanoic acid was employed to dissolve cosmetics containing Cd2+ and Cd2+ was extracted using an EDTA-2Na saturated solution, analyzed by FAAS. The study found that HDES-1 can be recycled and reused well; the stability constants of Cd2+ EDTA chelates play an important role in the extracting process; the optimum conditions were: the solubility of HDES-1 was 20 mL/g for cosmetic sample at an indoor temperature of around 10 degrees C; the dissolver-extractant ratio was 2:1; the LOD was 0.037 mg/kg; the RSD was 3.5%; and the recovery was 85.5-118.3%. The developed method was successfully applied to actual cosmetic samples with satisfactory results, and it was also applied for the determination of Mg2+, Mn2+, and Cu2+ in cosmetic samples.
摘要：
This review provides an overview of the current trends and prospects of the extraction and separation analysis techniques for phenolic compounds in honey in 2012-2022 years. The classification, chemical structures, physicochemical, and bioactive properties of phenolic compounds in honey were comprehensively analyzed. The recent sample preparation techniques for extracting and separating the phenolic compounds from honey were discussed. The advantages and disadvantages of different extraction and separation analyses were also analyzed and compared. According to recent literatures, solid phase extraction and liquid-liquid extraction, two traditional sample preparation techniques, are still widely used for extracting phenolic compounds from honey samples. Various improved microscale extraction methods, such as solid phase microextraction and liquid-liquid microextraction, and sub-technologies can be applied considering the recovery rates, costs, solvent consumption, and environmental impacts. This review will provide insights into the extraction and separation analysis of phenolic compounds, and foster the development and utilization of active components in honey.
摘要：
Hemicyanine dyes, with a tunable optical site and high wavelength tailorability, are of significant importance in the fields of sensing and diagnosis. Following the discovery of the near-infrared (NIR) (650–900 nm) fluorescent dyes Changsha (CS) and Huda (HD) by our group, remarkable progress has been made in the development of hemicyanine-based probes for in vivo imaging and detecting. In this review, we summarize the key contributions made by our group in developing long-wavelength (650–1700 nm) hemicyanines and utilizing them to construct functional probes. Finally, potential drawbacks and future prospects of hemicyanine dyes/probes are discussed.
1 Introduction
2 Changsha (CS) Dyes
3 Huda (HD) Dyes
4 Construction of Hemicyanine Fluorophores in the NIR-II Region
5 Summary and Outlook
期刊：
Food Research International,2023年163:112278 ISSN：0963-9969
通讯作者：
Xiao-Hua Zhang<&wdkj&>Xiao-Li Yin
作者机构：
[Zhang, Xiao-Hua; Zhang, Ya-Qian; Pan, Le-Yuan; Zheng, Jing-Jing; Yang, Kai-Long; Ren, Lu-Meng] Xuchang Univ, Food & Pharm Coll, Henan Key Lab Biomarker Based Rapid detect Technol, Xuchang 461000, Peoples R China.;[Cui, Hui-Na; Yin, Xiao-Li] Yangtze Univ, Coll Life Sci, Jingzhou 434023, Peoples R China.;[Qing, Xiang-Dong] Hunan City Univ, Coll Mat & Chem Engn, Hunan Prov Key Lab Dark Tea & Jin Hua, Yiyang 413049, Peoples R China.
通讯机构：
[Xiao-Hua Zhang] H;[Xiao-Li Yin] C;College of Life Sciences, Yangtze University, Jingzhou 434023, China<&wdkj&>Henan Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety, Food and Pharmacy College, Xuchang University, Xuchang 461000, PR China
关键词：
Aqueous two-phase systems;Chemometrics;Green tea;HPLC-DAD;Harvesting season
摘要：
The flavor and aroma quality of green tea are closely related to the harvest season. The aim of this study was to identify the harvesting season of green tea by alcohol/salt-based aqueous two-phase system (ATPS) combined with chemometric analysis. In this paper, the single factor experiments (SFM) and response surface methodology (RSM) optimization were designed to investigate and select the optimal ATPS. A total of 180 green tea samples were studied in this work, including 86 spring tea and 94 autumn tea. After the active components in green tea samples were extracted by the optimal ethanol/(NH(4))(2)SO(4) ATPS, the qualitative and quantitative analysis was realized based on HPLC-DAD combined with alternating trilinear decomposition-assisted multivariate curve resolution (ATLD-MCR) algorithm, with satisfactory spiked recoveries (86.00%-112.45%). The quantitative results obtained from ATLD-MCR model were subjected to chemometric pattern recognition analysis. The constructed partial least squares-discriminant analysis (PLS-DA) and orthogonal partial least squares-discriminant analysis (OPLS-DA) models showed better results than the principal component analysis (PCA) model, and the R(2)X(cum) values (>0.835) and R(2)Y(cum) (>0.937) were close to 1, the Q(2)(cum) values were greater than 0.75 (>0.933), and the differences between R(2)Y(cum) and Q(2)(cum) were not larger than 0.2, indicating excellent cross-validation prediction performance of the models. Furthermore, the classification results based on the hierarchical clustering analysis (HCA) were consistent with the PCA, PLS-DA and OPLS-DA results, establishing a good correlation between tea active components and the harvesting seasons of green tea. Overall, the combination of ATPS and chemometric methods is accurate, sensitive, fast and reliable for the qualitative and quantitative determination of tea active components, providing guidance for the quality control of green tea.
期刊：
JOURNAL OF ORGANIC CHEMISTRY,2023年88(20):14697-14707 ISSN：0022-3263
通讯作者：
Chen, Shanping;Deng, GJ
作者机构：
[Quan, Siying; Fang, Fang; Xia, Jie; Chen, Shanping; Deng, Guo-Jun; Chen, SP; Deng, GJ] Xiangtan Univ, Key Lab Green Organ Synth & Applicat, Key Lab Environm Friendly Chem & Applicat, Coll Chem,Minist Educ Hunan Prov, Xiangtan 411105, Peoples R China.;[Fang, Fang] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Peoples R China.;[Deng, Guo-Jun; Deng, GJ] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Peoples R China.
通讯机构：
[Chen, SP; Deng, GJ ] X;Xiangtan Univ, Key Lab Green Organ Synth & Applicat, Key Lab Environm Friendly Chem & Applicat, Coll Chem,Minist Educ Hunan Prov, Xiangtan 411105, Peoples R China.;Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Peoples R China.
摘要：
A facile and practical approach for the preparation of substituted pyrimidines from ketones, NH4OAc, and N,N-dimethylformamide dimethyl acetal has been described. This NH4I-promoted three-component tandem reaction affords a broad range of substituted pyrimidines in acceptable yields under metal- and solvent-free conditions. The present methodology features the advantages of simple and easily available starting materials, metal- and solvent-free conditions, a broad substrate scope with good functional group tolerance, and gram-scale synthesis.
摘要：
The authenticity of honey currently poses challenges to food quality control, thus requiring continuous modernization and improvement of related analytical methodologies. This review provides a comprehensively overview of honey authenticity challenges and related analytical methods. Firstly, direct and indirect methods of honey adulteration were described in detail, commenting the existing challenges in current detection methods and market supervision approaches. As an important part, the integrated metabolomic workflow involving sample processing procedures, instrumental analysis techniques, and chemometric tools in honey authenticity studies were discussed, with a focus on their advantages, disadvantages, and scopes. Among them, various improved microscale extraction methods, combined with hyphenated instrumental analysis techniques and chemometric data processing tools, have broad application potential in honey authenticity research. The future of honey authenticity determination will involve the use of simplified and portable methods, which will enable on-site rapid detection and transfer detection technologies from the laboratory to the industry.
通讯机构：
[Xu, S ] U;[Shi, L ; Xu, S] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China.;Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China.
摘要：
We propose a practical strategy to design a series of heavy-atom-free synergistic phototherapy agents (CSQs) with both photodynamic therapy (PDT) and photothermal therapy (PTT) under NIR wavelength excitation by simply replacing the indole salt of xanthene Changsha (CS) with quinoline salt.
期刊：
Energy & Fuels,2023年37(20):15867–15878 ISSN：0887-0624
通讯作者：
Yang, FM
作者机构：
[Long, Sheng; Liang, Hai-Cheng; Zou, Pan; Yang, Fan-Ming; Liao, Min; Zhang, Ke-Yi; Xie, Du; Jiang, Kai] Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Yang, FM ] H;Hunan City Univ, Coll Mat & Chem Engn, Yiyang 413000, Hunan, Peoples R China.
摘要：
Porous materials of PEI(n)/Zr-(N)-KIT-6 were prepared by doping zirconium to the KIT-6 framework and introducing poly(ethylenimine) (PEI) to the pore channels (n is the weight percentage of PEI to Zr-(N)-KIT-6, and N is the molar ratio of Zr/Si). The adsorbents were characterized and tested at a 20% CO2 concentration to investigate the influence of Zr and PEI on CO2 adsorption. The results display that Zr-O-Si bonds are formed after the doping of Zr species. In addition, PEI is loaded on the surface through the formation of hydrogen bonds and Zr-N bonds. The synthesized PEI(n)/Zr-(N)-KIT-6 materials keep stable when the temperature is lower than 210 degrees C. In addition, the materials exhibit good CO2 adsorption performance, which is attributed to the existence of Zr and PEI. The Lewis acidity of KIT-6 is improved after the doping of Zr heteroatoms, leading to the immobilization of more PEI and the enhancement of CO2 adsorption properties. The adsorption includes two steps: diffusion of CO2 in the pore channels and the reaction between CO2 and amine groups. When the gas flow rate is 40 mL/min, the maximum CO2 adsorption capacity of 174.7 mg/g is achieved. After 20 cycles, the adsorption value keeps stable.
期刊：
Journal of Mathematical Chemistry,2023年61(4):877-892 ISSN：0259-9791
通讯作者：
Xin Huang
作者机构：
[Huang, Xin] Hunan City Univ, Management Sch, Yiyang 413000, Peoples R China.;[Xia, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xin Huang] M;Management School, Hunan City University, Yiyang, People’s Republic of China
关键词：
Split regularized regression;Wavelength interval selection;Partial least squares;Near-infrared spectroscopy
摘要：
Wavelength selection has become a critical step in the analysis for near-infrared (NIR) spectroscopy with high co-linearity and large number of spectral variables. In this study, a novel wavelength interval selection method based on split regularized regression and partial least squares (SplitReg-PLS) is developed. SplitReg-PLS is a two-step approach, which combines the advantage of the SplitReg and PLS methods. SplitReg presents interesting properties, which can split the variables into groups and pool the regularized estimation of the regression coefficients together as groups. The PLS regression is one of the most popular methods for multivariate calibration, and is performed on the selected group variables by using the SplitReg. The SplitReg-PLS method can automatically select successive strongly correlated and interpretable spectral variables related to the response, which provides a flexible framework for variable selection. The performance of the proposed procedure is evaluated by three real NIR datasets. The results indicate that SplitReg-PLS is a good wavelength interval selection strategy.
期刊：
Chemometrics and Intelligent Laboratory Systems,2023年234:104756 ISSN：0169-7439
通讯作者：
Xin Huang
作者机构：
[Huang, Xin] Hunan City Univ, Management Sch, Yiyang 413000, Peoples R China.;[Xia, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xin Huang] M;Management School, Hunan City University, Yiyang, 413000, PR China
关键词：
Iterative distance correlation;Near-infrared spectroscopy;Partial least squares;Wavelength interval selection
摘要：
Wavelength selection is a fundamental and critical step in near infrared spectral analysis, which can improve the prediction performance and enhance the interpretability of the model. Motivated by the appealing properties of the distance correlation, a novel wavelength interval selection algorithm, named iterative distance correlation combined with PLS regression (IDC-PLS), is developed. To obtain all the possible wavelength intervals, our method mainly consists of two steps. First, an effective iterative procedure based on distance correlation is used to screen wavelength interval variables. Then, build a series of PLS models by recursive using all the wavelength intervals but one interval until the optimal wavelength intervals obtain, which correspond the lowest root mean square error of prediction. The IDC-PLS integrates the advantages of distance correlation with PLS method, which is an efficient strategy to enhance the performance of PLS in wavelengths selection. The performance of IDC-PLS was tested on three real NIR datasets. The results demonstrate that IDC-PLS can improve prediction performance and efficiently select strongly correlated wavelength intervals related to the response. The proposed method may be a good wavelength interval selection strategy due to its simplicity and efficiency.
摘要：
Rod-like porous a-Fe2O3 was synthesized by static hydrothermal treatment at 160 degrees C and used as a symmetric supercapacitor. The phase information, structure, morphology, valence state and composition of the prepared sample were characterized using X-ray diffraction, infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and N-2 adsorption-desorption. The results show that the prepared a-Fe2O3 is a rod-like porous material dominated by mesopores. Moreover, the a-Fe2O3 is a hexagonal single crystal with [FeO6] octahedrons and the interplanar crystal spacings are large enough for electrolyte ion diffusion. In both KOH and Na2SO4 electrolytes, the a-Fe2O3 sample displays good pseudocapacitance performance. However, the specific discharge capacity and energy density in KOH are larger than in Na2SO4. In 1 mol L-1 of KOH, remarkable capacities of 139 and 35.5 F g(-1 )are obtained and an energy density of 3.91 and 1.01 Wh kg(-1) is achieved at 1 and 20 A g(-1) respectively. After 10 000 cycles, 87.7% of the specific capacitance is still retained at 1 A g(-1). The good capacitance properties may attributed to the rod-like porous structure and large interplanar spacing, which provide good ion insertion-exit paths, enough oxidation-reduction active sites and a fast ion transfer velocity.
摘要：
A new type of hollow urchin-shaped NCM811 ternary-structure material was prepared for high rate charge/ discharge capability and efficient CO2 adsorption. Ni2+/Ni3+, Co2+/Co3+ and Mn4+exist simultaneously in the NCM811 material, and the atomic ration of Ni: Co: Mn is close to 8: 1: 1. In KOH, the NCM811 material shows a pseudocapacitance behavior and achieves a remarkable specific discharge capacity of 208.3 F/g. When the current density is improved to 20 A/g, the capacity still keeps 52.3 %. The excellent rate capability is associated with the hollow urchin-shaped porous structure which provide fast ions migration, large reaction surface area and good heterometallic synergy. The CO2 adsorption results conform to the Bangham mode. At 25 degrees C, a large CO2 adsorption capacity of 3.66 mmol/g is achieved in a flow rate of 35 mL/min. The adsorption process may closely related to the large pore volume and abundant O2-basic sites.
作者机构：
[Zhang, Jin; Qing, Xiang-Dong; Xu, Ling; An, Rong] Hunan City Univ, Coll Mat & Chem Engn, Hunan Prov Key Lab Dark Tea & Jin hua, Yiyang 413000, Peoples R China.;[Zhang, Xiao-Hua] Xuchang Univ, Food & Bioengn Coll, Key Lab Biomarker Based Rapid Detect Technol Food, Xuchang 461000, Peoples R China.;[Duponchel, Ludovic] Univ Lille 1, CNRS, UMR 8516, LASIRE Lab Spect Interact React & Environm, F-59000 Lille, France.
通讯机构：
[Ludovic Duponchel; Xiang-Dong Qing] A;Authors to whom correspondence should be addressed.<&wdkj&>Hunan Provincial Key Laboratory of Dark Tea and Jin-hua, College of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>Université Lille 1, CNRS, UMR 8516–LASIRE–Laboratoire de Spectroscopie Pour Les Interactions, La Réactivité et l’environnement, F-59000 Lille, France
摘要：
In order to solve the problems of high internal stress of core-rim structure, and denitrification behavior of Ti(C, N)-based cermets, nano TiC powders were adopted to promote the diffusion-controlled formation of inner rims and to modify the metal-ceramic interfaces. Based on this, Ti(C,N)-based cermets with 0-8 wt% nano TiC were prepared via solid-state nitrogen-pressure sintering and subsequently Ar-pressure HIP sintering. Nano TiC refined the microstructure and resulted in more white core-rim phase with thicker rims, and ultrafine rimless Ti(C,N). Nano TiC greatly affected the rim-binder interfaces via shifting the equilibrium crystal morphology of (Ti,M) (C, N) in Ni-Co from cubic to octahedron. With the increasing nano TiC content, the orientation relationship of rim binder interface changed from (200)rim//(111)binder to (111)rim//(111)binder, and the interface strain increaseds. Cermets with {200} rim-binder interface exhibited high bending strength but low fracture toughness and tensile strength, owing to the high bonding strength between rim and binder. Otherwise, weakening strength of the rim binder interface could enhance the toughness via the breaking of ceramic-binder boundaries. A promising route for preparing Ti(C,N)-based cermets with satisfactory mechanical properties was put forward, via adjusting the rim-binder interfaces.
