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学者姓名：陈享享
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Abstract ：
The functionalization of noble metals is an effective approach to lowering the sensing temperature and improving the sensitivity of metal oxide semiconductor (MOS)-based gas sensors. However, there is a dearth of comparative analyses regarding the differences in sensitization mechanisms between the two functionalization modes of noble metal loading and doping. In this investigation, we synthesized Pt-doped CuO gas-sensing materials using a one-pot hydrothermal method. And for Pt-loaded CuO, Pt was deposited on the synthesized pristine CuO surface by using a dipping method. We found that both functionalization methods can considerably enhance the response and selectivity of CuO toward NO2 at low temperatures. However, we observed that CuO with Pt loading had superior sensing performance at 25 degrees C, while CuO with Pt doping showed more substantial response changes with an increase in the operating temperature. This is mainly due to the different dominant roles of electron sensitization and chemical sensitization resulting from the different forms of Pt present in different functionalization modes. For Pt doping, electron sensitization is stronger, and for Pt loading, chemical sensitization is stronger. The results of this study present innovative ideas for understanding the optimization of noble metal functionalization for the gas-sensing performance of metal oxide semiconductors.
Keyword ：
CuO CuO gas sensor gas sensor NO2 NO2 Pt doping Pt doping Pt loading Pt loading
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| GB/T 7714 | Chen, Xiangxiang , Liu, Tianhao , Ouyang, Yunfei et al. Influence of Different Pt Functionalization Modes on the Properties of CuO Gas-Sensing Materials [J]. | SENSORS , 2024 , 24 (1) . |
| MLA | Chen, Xiangxiang et al. "Influence of Different Pt Functionalization Modes on the Properties of CuO Gas-Sensing Materials" . | SENSORS 24 . 1 (2024) . |
| APA | Chen, Xiangxiang , Liu, Tianhao , Ouyang, Yunfei , Huang, Shiyi , Zhang, Zhaoyang , Liu, Fangzheng et al. Influence of Different Pt Functionalization Modes on the Properties of CuO Gas-Sensing Materials . | SENSORS , 2024 , 24 (1) . |
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One of the most challenging problems for people around the world is the lack of clean water. In the past few decades, the massive discharge of emerging organic pollutants (EOPs) into natural water bodies has exacerbated this crisis. Considerable research efforts have been devoted to removing these EOPs due to their biotoxicity at low concentrations. Heterogeneous photocatalysis via coupling clay minerals with nanostructured semiconductors has proven to be an economical, efficient, and environmentally friendly technology for the elimination of EOPs in drinking water and watershed water. Natural zeolite minerals (especially clinoptilolites) are regarded as appropriate supports for semiconductor-based photocatalysts due to their characteristics of having a low cost, environmental friendliness, easy availability, co-catalysis, etc. This review summarizes the latest research on clinoptilolites used as supports to prepare binary and ternary metal oxide or sulfide semiconductor-based hybrid photocatalysts. Various preparation methods of the composite photocatalysts and their degradation efficiencies for the target contaminants are introduced. It is found that the good catalytic activity of the composite photocatalyst could be attributed to the synergistic effect of combining the clinoptilolite adsorbent with the semiconductor catalyst in the heterogeneous system, which could endow the composites with an excellent adsorption capacity and produce more e-/h+ pairs under suitable light irradiation. Finally, we highlight the serious threat of EOPs to the ecological environment and propose the current challenges and limitations, before putting the zeolite mineral composite photocatalysts into practice. The present work would provide a theoretical basis and scientific support for the application of zeolite-based photocatalysts for degrading EOPs.
Keyword ：
composite photocatalysts composite photocatalysts emerging organic pollutants emerging organic pollutants semiconductor semiconductor zeolite mineral (cliloptilolite) zeolite mineral (cliloptilolite)
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| GB/T 7714 | Zhou, Pengfei , Wang, Fei , Shen, Yanbai et al. Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water [J]. | CATALYSTS , 2024 , 14 (4) . |
| MLA | Zhou, Pengfei et al. "Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water" . | CATALYSTS 14 . 4 (2024) . |
| APA | Zhou, Pengfei , Wang, Fei , Shen, Yanbai , Duan, Xinhui , Zhao, Sikai , Chen, Xiangxiang et al. Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water . | CATALYSTS , 2024 , 14 (4) . |
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The gas sensing properties of semiconducting metal oxides will be further improved by the co-functionalization of bimetallic noble elements. However, most methods for the preparation of co-functionalized metal oxides of two noble metals are complex and costly. In this study, the Au/Pd co-functionalized ZnO nanowires were prepared by a facile one-pot hydrothermal method. The crystal structure, nano-size, chemical composition and morphology of the samples were tested by XRD, TEM, XPS and SEM, respectively. The Au and Pd elements were distributed on the ZnO nanowire surface in the form of Au, Pd and PdO nanoparticles, and some of them were doped into the lattice of ZnO. The gas sensing results showed that the response of 1 mol% Au/Pd-ZnO was 732.4 to 5 ppm NO2 gas at optimal operating temperature of 100 degrees C, which was 32 times higher than that of pristine ZnO, and the response/recovery times were significantly reduced to only 36/6 s. This sample also exhibits a good reproducibility. Moreover, the Au/Pd co-functionalization can significantly enhance the selectivity of the ZnO nanowires to NO2 gas. Our work showed that the activation energy can be further reduced to 0.172 eV by Au/Pd co-functionalization.
Keyword ：
Co-functionalization Co-functionalization Hydrothermal Hydrothermal Nanowires Nanowires NO 2 sensor NO 2 sensor ZnO ZnO
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| GB/T 7714 | Chen, Xiangxiang , Ouyang, Yunfei , Liu, Tianhao et al. Ultra-high sensitive and selective NO2 gas sensing performance of Au/Pd co-functionalized ZnO nanowires by a one-pot hydrothermal method [J]. | VACUUM , 2024 , 219 . |
| MLA | Chen, Xiangxiang et al. "Ultra-high sensitive and selective NO2 gas sensing performance of Au/Pd co-functionalized ZnO nanowires by a one-pot hydrothermal method" . | VACUUM 219 (2024) . |
| APA | Chen, Xiangxiang , Ouyang, Yunfei , Liu, Tianhao , Zhang, Chaoyang , Huang, Shiyi , Shang, Haoran et al. Ultra-high sensitive and selective NO2 gas sensing performance of Au/Pd co-functionalized ZnO nanowires by a one-pot hydrothermal method . | VACUUM , 2024 , 219 . |
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In this study, the adsorption behavior of gallium ions on a synthesized hydroxamic acid resin from sulfuric acid solution was investigated, aiming to recover Ga directly from pressure leaching solution in zinc hydrometallurgical plant. Hydroxamic acid chelating resin (HA-PDR) was prepared by introducing hydroxamic acid groups into the pre-made polyacrylate resin (PDR) with methyl ester group through hydroxylamine reaction. Polyacrylate-divinylbenzene hydroxamic resins with a nitrogen content of up to 3.85 % were obtained at a divinylbenzene (DVB) content of 13 % and an optimal raw material ratio of NH2OH & sdot;HCl: NaOH: -CH3 = 4:4.5:1 (molar ratio). The obtained materials was characterized using FTIR, XPS and SEM to verify the successful introduction of hydroxamic acid groups. The results of adsorption experiments showed that the adsorption capacity of 27.65 mg/g could be obtained with a chemical, multilayered, and heterogeneous adsorption process, and film diffusion and intra-particle diffusion rate controlled mainly the adsorption efficiency. It has been proven that polyacrylate-divinylbenzene hydroxamic resins has extremely high adsorption selectivity for gallium in sulfuric acid solution, and the desorption effect is obvious, which can be applied promisingly in the industrial development of gallium extraction technology from zinc leaching residue in sulfuric acid system.
Keyword ：
Adsorption Adsorption Gallium Gallium Hydroxamic resins Hydroxamic resins Polyacrylate-divinylbenzene Polyacrylate-divinylbenzene Sulfuric acid Sulfuric acid
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| GB/T 7714 | Li, Yujie , Chen, Xiangxiang , Guo, Bao et al. Synthesis of polyacrylate-divinylbenzene hydroxamic resins and its gallium adsorption performance in sulfuric acid solution [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 60 . |
| MLA | Li, Yujie et al. "Synthesis of polyacrylate-divinylbenzene hydroxamic resins and its gallium adsorption performance in sulfuric acid solution" . | JOURNAL OF WATER PROCESS ENGINEERING 60 (2024) . |
| APA | Li, Yujie , Chen, Xiangxiang , Guo, Bao , Dai, Zilin , Kong, Zhenxing , Li, Fangxu et al. Synthesis of polyacrylate-divinylbenzene hydroxamic resins and its gallium adsorption performance in sulfuric acid solution . | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 60 . |
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Sulfurous iron minerals with recovery value are contained in a lead-zinc tailing in Fujian Province, China. However, the sulfurous iron minerals are depressed by lime in the early lead-zinc flotation, therefore it is necessary to use appropriate activators to improve the floatability of the mineral. The property of flotation foam can directly reflect the quality of the flotation index. The addition of activators can also change the properties of flotation foam. In this paper, an effective activator combination was selected through actual mine tests and foam analysis. The mineralogical study of the lead-zinc tailing was first carried out through chemical multi-element analysis and XRD. The flotation tests on the recovery of sulfurous iron ore by different activators were carried out. Finally, a foam scanning analyzer was used to test and analyze the frothing performance and froth stability of the slurry under different activation conditions. The results showed that the dispersion-activation flotation and dispersion-combined activation flotation can help to improve the frothing performance of the slurry and improve the flotation indexes. At the same time, the enhanced activated flotation can also reduce the froth stability indexes (FSI) to less than 20 s, and the reduction of the froth stability can help to improve the flotation recovery. For each activation flotation process that achieves the best flotation index, the frothing performance and foam stability of the pulp is close to that of the flotation tests index.
Keyword ：
enhanced activation enhanced activation flotation flotation froth properties froth properties pyrite pyrite pyrrhotite pyrrhotite
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| GB/T 7714 | Chen, Xiangxiang , Zhang, Zhaoyang , Qiang, Wen et al. Effect of activator on foam properties in sulfurous iron ore flotation [J]. | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING , 2024 , 60 (5) . |
| MLA | Chen, Xiangxiang et al. "Effect of activator on foam properties in sulfurous iron ore flotation" . | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING 60 . 5 (2024) . |
| APA | Chen, Xiangxiang , Zhang, Zhaoyang , Qiang, Wen , Huang, Shiyi , Liu, Fangzheng , Qiu, Lu et al. Effect of activator on foam properties in sulfurous iron ore flotation . | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING , 2024 , 60 (5) . |
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There was an error in the original publication [1]. The references’ citation numbers have been corrected throughout the manuscript, as follows: [109] is changed to [119] [110] is changed to [120] [119] is changed to [121] [120] is changed to [122] [121] is changed to [123] [122] is changed to [124] [123] is changed to [125] [124] is changed to [126] [125] is changed to [127] [126] is changed to [128] [127] is changed to [129] [128] is changed to [130] [129] is changed to [131] [130] is changed to [132] [106] is changed to [133] [131] is changed to [134] [132] is changed to [135] [133] is changed to [136] [134] is changed to [137] [135] is changed to [138] [136] is changed to [139] [137] is changed to [140] [138] is changed to [141] [139] is changed to [142] [140] is changed to [143] [108] is changed to [144] [141] is changed to [145] [142] is changed to [146] [143] is changed to [147] [144] is changed to [148] [145] is changed to [149] [146] is changed to [150] [147] is changed to [151] [107] is changed to [152] [148] is changed to [153] [149] is changed to [154] [150] is changed to [155] [151] is changed to [156] [152] is changed to [157] [153] is changed to [158] [154] is changed to [159] [155] is changed to [160] [156] is changed to [161] [157] is changed to [162] [158] is changed to [163] [111] is changed to [164] [159] is changed to [165] [160] is changed to [166] [161] is changed to [167] [162] is changed to [168] [163] is changed to [169] [164] is changed to [170] [165] is changed to [171] [166] is changed to [172] [167] is changed to [173] Rueda-Marquez, J.J.; Levchuk, I.; Fernández Ibañez, P.; Sillanpää, M. A critical review on application of photocatalysis for toxicity reduction of real wastewaters. J. Clean. Prod. 2020, 258, 120694. Zhang, X.; Zhang, K.; Shi, Y.; Xiang, H.; Yang, W.; Zhao, F. Surface engineering of multifunctional nanostructured adsorbents for enhanced wastewater treatment: A review. Sci. Total Environ. 2024, 920, 170951. Ali, H.M.; Arabpour Roghabadi, F.; Ahmadi, V. Solid-supported photocatalysts for wastewater treatment: Supports contribution in the photocatalysis process. Sol. Energy 2023, 255, 99–125. Lee, D.-E.; Kim, M.-K.; Danish, M.; Jo, W.-K. State-of-the-art review on photocatalysis for efficient wastewater treatment: Attractive approach in photocatalyst design and parameters affecting the photocatalytic degradation. Catal. Commun. 2023, 183, 106764. Zheng, Z.; Tian, S.; Feng, Y.; Zhao, S.; Li, X.; Wang, S.; He, Z. Recent advances of photocatalytic coupling technologies for wastewater treatment. Chin. J. Catal. 2023, 54, 88–136. de Magalhães, L.F.; da Silva, G.R.; Peres, A.E.C. Zeolite Application in Wastewater Treatment. Adsorpt. Sci. Technol. 2022, 2022, 4544104. Zhao, Y.; Tian, G.; Duan, X.; Liang, X.; Meng, J.; Liang, J. Environmental Applications of Diatomite Minerals in Removing Heavy Metals from Water. Ind. Eng. Chem. Res. 2019, 58, 11638–11652. Shi, W.Y.; Shao, H.B.; Li, H.; Shao, M.A.; Du, S. Progress in the remediation of hazardous heavy metal-polluted soils by natural zeolite. J. Hazard. Mater. 2009, 170, 1–6. Wang, S.; Peng, Y. Natural zeolites as effective adsorbents in water and wastewater treatment. Chem. Eng. J. 2010, 156, 11–24. Shi, X.; Ren, B.; Jin, X.; Wang, X.C.; Jin, P. Metabolic hazards of pharmaceuticals and personal care products (PPCPs) in sewers. J. Hazard. Mater. 2022, 432, 128539. © 2024 by the authors.
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| GB/T 7714 | Zhou, P. , Wang, F. , Shen, Y. et al. Correction to: Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water (Catalysts, (2024), 14, 4, (216), 10.3390/catal14040216) [未知]. |
| MLA | Zhou, P. et al. "Correction to: Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water (Catalysts, (2024), 14, 4, (216), 10.3390/catal14040216)" [未知]. |
| APA | Zhou, P. , Wang, F. , Shen, Y. , Duan, X. , Zhao, S. , Chen, X. et al. Correction to: Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water (Catalysts, (2024), 14, 4, (216), 10.3390/catal14040216) [未知]. |
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采用水热法合成ZnO一维纳米线材料，以活性炭粉与纳米ZnO复合构筑出ZnO/活性炭复合材料，探究了复合材料对乙醇气体的敏感性能。结果表明，150℃时，ZnO/活性炭复合材料传感器对乙醇气体具有良好的响应-恢复特性；对于浓度5×10~(-6)的乙醇，传感器灵敏度可达到4.75;传感器灵敏度随着乙醇浓度增加呈正相关提升，且具有很好的重现性。
Keyword ：
半导体 半导体 敏感材料 敏感材料 气体传感器 气体传感器 气敏材料 气敏材料 氧化锌 氧化锌 活性炭 活性炭 矿业安全 矿业安全
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| GB/T 7714 | 陈勇康 , 宋亚霖 , 王运城 et al. ZnO/活性炭复合材料的制备及其传感器对低浓度乙醇的气敏性能 [J]. | 矿冶工程 , 2023 , 43 (03) : 171-175 . |
| MLA | 陈勇康 et al. "ZnO/活性炭复合材料的制备及其传感器对低浓度乙醇的气敏性能" . | 矿冶工程 43 . 03 (2023) : 171-175 . |
| APA | 陈勇康 , 宋亚霖 , 王运城 , 邱榕源 , 尚浩然 , 林骅 et al. ZnO/活性炭复合材料的制备及其传感器对低浓度乙醇的气敏性能 . | 矿冶工程 , 2023 , 43 (03) , 171-175 . |
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Flotation is the most known beneficiation method for the separation of complex and refractory iron ores. As a typical iron-containing silicates, it is difficult to separate chlorite from specularite, because of the similar surface physicochemical properties. In this study, the selective depression effect of sodium hexametaphosphate (SHMP) was conducted via the cationic micro-flotation. The surface adsorption mechanism between SHMP and the two mineral surface was explored through surface adsorption amount tests, Zeta-potential measurements, Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses. The micro-flotation results indicated that SHMP could selectively depress around 90% of chlorite, while its effect on the floatability of specularite was negligible (<20% depressing). The surface adsorption amount tests, Zeta-potential measurements analysis demonstrated that SHMP selectively adsorb on chlorite surface while on the surface of specularite is feeble. The further surface adsorption analysis via FT-IR and XPS proved that SHMP selective adsorption occurred on the chlorite surface mainly by chemisorption mainly through the chelation reaction between O in the phosphate groups of SHMP molecular and metal ions on surface of chlorite.
Keyword ：
adsorption adsorption chlorite chlorite depressant depressant flotation flotation specularite specularite
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| GB/T 7714 | Zhao, Fugang , Yu, Xiankun , Gao, Xiangpeng et al. The selective depression effect of sodium hexametaphosphate on the separation of chlorite and specularite [J]. | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING , 2023 , 59 (2) . |
| MLA | Zhao, Fugang et al. "The selective depression effect of sodium hexametaphosphate on the separation of chlorite and specularite" . | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING 59 . 2 (2023) . |
| APA | Zhao, Fugang , Yu, Xiankun , Gao, Xiangpeng , Li, Mingyang , Chen, Xiangxiang . The selective depression effect of sodium hexametaphosphate on the separation of chlorite and specularite . | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING , 2023 , 59 (2) . |
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Smithsonite, dolomite, and calcite are carbonate minerals. The crystal structures and spatial distribution characteristics of their common surface metal sites are similar, leading to difficulty in the flotation separation of smithsonite from these carbonate gangues. In this paper, the floatability of smithsonite, dolomite, and calcite in sodium oleate, salicylhydroxamic acid, and their combined-collector system were systematically studied through single-mineral flotation tests, respectively. The results showed that it was difficult to obtain a noticeable recovery difference between smithsonite-calcite and smithsonite-dolomite in a single-collector system of sodium oleate and salicylhydroxamic acid, both at the same time. In the combined-collector system of salicylhydroxamic acid and sodium oleate with total dosage of 6 x 10-4 mol/L, molar ratio of 3:1, and pH of 8.0, the recovery difference of smithsonite-calcite and smithsonite-dolomite could reach the highest values of 38.46% and 37.98%, respectively, while obtaining the highest smithsonite recovery of 88.19%. The adsorption mechanism of the combined collectors was investigated via Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, a collector adsorption test, and zeta potential measurements, respectively.
Keyword ：
calcite calcite combined collectors combined collectors dolomite dolomite flotation flotation smithsonite smithsonite
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| GB/T 7714 | Chen, Xiangxiang , Bai, Junzhi , Zhang, Zhaoyang et al. The Flotation Separation Mechanism of Smithsonite from Calcite and Dolomite with Combined Collectors [J]. | MINERALS , 2023 , 13 (12) . |
| MLA | Chen, Xiangxiang et al. "The Flotation Separation Mechanism of Smithsonite from Calcite and Dolomite with Combined Collectors" . | MINERALS 13 . 12 (2023) . |
| APA | Chen, Xiangxiang , Bai, Junzhi , Zhang, Zhaoyang , Qiang, Wen , Huang, Shiyi , Ouyang, Yunfei et al. The Flotation Separation Mechanism of Smithsonite from Calcite and Dolomite with Combined Collectors . | MINERALS , 2023 , 13 (12) . |
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瓦斯是我国煤矿以及相关金属矿山安全事故发生的主要诱因。甲烷是瓦斯的主要成分,利用高性能气体传感器对甲烷进行及时的监测预警,可有效保障矿山井下作业的安全。金属氧化物半导体型传感器相比电化学式、气相色谱式、接触燃烧式、光学式等气体传感器,具有成本低、体积小、稳定性好和响应快等优点,因此应用前景广泛。介绍了几种常见的金属氧化物半导体甲烷气敏材料,分析其用于甲烷气体传感的基本原理和优势,总结得出提升金属氧化物半导体材料气敏性能的3个主要方向为形貌调控、贵金属掺杂和构建异质结。目前需要进一步围绕表面电阻控制、化学敏化和电子敏化等3种气敏提升机制进行优化制备。总体而言,金属氧化物半导体气敏材料的研究为开发高性能瓦斯传感器奠定了基础,并将有助于矿山的安全和可持续生产。
Keyword ：
气体传感器 气体传感器 气敏材料 气敏材料 煤矿安全 煤矿安全 甲烷检测 甲烷检测 金属氧化物半导体 金属氧化物半导体
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| GB/T 7714 | 陈享享 , 刘天豪 , 欧阳云飞 et al. 基于金属氧化物半导体的瓦斯气体传感器研究现状及进展 [J]. | 金属矿山 , 2023 , 11 (11) : 34-44 . |
| MLA | 陈享享 et al. "基于金属氧化物半导体的瓦斯气体传感器研究现状及进展" . | 金属矿山 11 . 11 (2023) : 34-44 . |
| APA | 陈享享 , 刘天豪 , 欧阳云飞 , 黄世毅 , 张朝阳 , 罗盛葳 et al. 基于金属氧化物半导体的瓦斯气体传感器研究现状及进展 . | 金属矿山 , 2023 , 11 (11) , 34-44 . |
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