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学者姓名:陈享享
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选用适宜的浮选质量在线监测方法可快速、准确地获取矿浆品位等浮选产品质量信息,从而对浮选状态作出必要的、及时的调整.为了指导相关从业人员科学、准确地选择和运用现有的浮选质量在线监测方法,在系统介绍了不同在线监测方法机理的基础上,逐一回顾了各方法在国内外的应用情况,并对各技术的特点、应用现状及优缺点进行了比较,指出需要结合生产实际环境和精度要求选用合适的监测技术.最后对浮选质量在线监测方法的发展趋势进行了展望.在线监测方法的研发将进一步推动自动化技术在选矿领域的应用,达到稳定生产指标,提高生产效率的目的.
Keyword :
X荧光品位分析 X荧光品位分析 品位 品位 在线监测 在线监测 拉曼光谱 拉曼光谱 泡沫图像 泡沫图像 浮选 浮选
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GB/T 7714 | 柳方正 , 陈享享 , 张朝阳 et al. 浮选质量在线监测方法研究现状与进展 [J]. | 金属矿山 , 2025 , (3) : 210-218 . |
MLA | 柳方正 et al. "浮选质量在线监测方法研究现状与进展" . | 金属矿山 3 (2025) : 210-218 . |
APA | 柳方正 , 陈享享 , 张朝阳 , 欧阳云飞 , 邱璐 , 黄世毅 et al. 浮选质量在线监测方法研究现状与进展 . | 金属矿山 , 2025 , (3) , 210-218 . |
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Germanium is one of the strategic scattering metals, and recovering a minor concentration of scattering metals from zinc concentrate's leaching solution is an essential resource worldwide. Practically, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals from zinc leaching solution, facilitating further extraction of Ge and others. Silicon poses significant challenges to the efficient extraction of Ge due to their similar chemical property and the inert nature of silica. However, the evolution of the Ge occurrence state, especially its relationship with Si, during the precipitation and dissolution process in zinc hydrometallurgy is unclear, and there is a lack of an effective method to separate Si/Ge. This paper started with a detailed characterization and leaching behavior of Ge-enriched residue obtained from the plant, followed by a systematic investigation of Ge behavior in synthetic Si/Ge binary and Fe/Si/Ge ternary systems. Eventually, options for Ge enrichment from zinc leaching solution and Si/Ge separation are recommended, providing a practical framework for mitigating the negative influence of Si on the extraction of Ge in zinc hydrometallurgy. The significant findings are that Ge/Si are both presumably co-adsorbed by Fe(OH)3 colloids upon neutralization to pH 5 of zinc leaching solution, which could be acid redissolved at the unrealistically high liquid-to-solid ratio of 200/1 at the practically meaningful liquid-to-solid ratio of 5/1, Si concentration is high enough to quickly condense and polymerize, resulting the formation of silica precipitate and permanent encapsulating of Ge into silica; interestingly, the Si-O-Ge bonding becomes weakened with pH increasing up to alkaline region and Ge leaching rate exceeding 80% at pH 10, effectively separating Ge from SiO2.
Keyword :
Enrichment Enrichment Scattering metals Scattering metals Si/Ge separation Si/Ge separation Zinc hydrometallurgy Zinc hydrometallurgy
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GB/T 7714 | Chen, Shizhe , Dong, Weinan , Zhao, Weisong et al. The evolution of Ge occurrence state and Si-Ge relationship during precipitation-dissolution enrichment to recover scattering metals from Zn concentrate leaching solution [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 368 . |
MLA | Chen, Shizhe et al. "The evolution of Ge occurrence state and Si-Ge relationship during precipitation-dissolution enrichment to recover scattering metals from Zn concentrate leaching solution" . | SEPARATION AND PURIFICATION TECHNOLOGY 368 (2025) . |
APA | Chen, Shizhe , Dong, Weinan , Zhao, Weisong , Qiang, Wen , Chen, Xiangxiang , Guo, Bao et al. The evolution of Ge occurrence state and Si-Ge relationship during precipitation-dissolution enrichment to recover scattering metals from Zn concentrate leaching solution . | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 368 . |
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Lead is an indispensable non-ferrous metal for industrial development. As primary galena(PbS) resources are being exhausted, the utilization of lead oxide ore resources have become increasingly important. Compared with the conventional lead oxide surface sulfidation flotation method by NaHS dosing in the pulp, the roasting sulfidation pre-treatment method has the characteristics of high efficiency and suitable for various types of ores. In this paper, we firstly demonstrate that pyrite(FeS2) can provide a sulfurous atmosphere to convert cerussite(PbCO3) into galena(PbS) through thermodynamic calculations. Then, the reaction conditions were optimized through the roasting sulfidation conditions such as the contact mode, time and temperature of the reaction, and the sulfidation mechanism of cerussite at high temperature roasting was studied by using XRF, XRD, SEM and XPS. It was clarified that the sulfidation of cerussite was progressed by reacting with sulfur-based atmosphere from the surface layer to form PbS, and then gradually penetrating into the inner layer until PbS was completely generated, and the recovery rate was increased from 14.95 % to >80 % after optimization.
Keyword :
Cerussite Cerussite Energy saving and carbon reduction Energy saving and carbon reduction Flotation Flotation Sulfidation mechanism Sulfidation mechanism Sulfidation roasting Sulfidation roasting
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GB/T 7714 | Miao, Yu , Yang, Wanting , Ding, Xuemin et al. The mechanism of sulfidation roasting pretreatment of cerussite for enhanced flotation behavior [J]. | CHEMICAL ENGINEERING JOURNAL ADVANCES , 2025 , 21 . |
MLA | Miao, Yu et al. "The mechanism of sulfidation roasting pretreatment of cerussite for enhanced flotation behavior" . | CHEMICAL ENGINEERING JOURNAL ADVANCES 21 (2025) . |
APA | Miao, Yu , Yang, Wanting , Ding, Xuemin , Min, Jiarui , Guo, Bao , Chen, Xiangxiang et al. The mechanism of sulfidation roasting pretreatment of cerussite for enhanced flotation behavior . | CHEMICAL ENGINEERING JOURNAL ADVANCES , 2025 , 21 . |
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随着全球能源需求的增长和环境问题的加剧,开发新型高性能气体传感器变得尤为迫切.生物质炭材料是由生物质原料经过预碳化和活化处理获得,具有独特的孔隙结构、大的比表面积、丰富的表面活性官能团和活性位点,在气体传感检测领域具有巨大的应用潜力.本文按照生物质炭的主要来源对生物质进行了分类(植物基、动物基和微生物基)以及 4种生物质炭材料的常见制备方法(水热炭化法、活化法、模板法和微波热解法).本文重点讨论了生物质炭材料在半导体型气体传感器和非金属氧化物主导型气体传感器的最新研究进展,包括作为气敏材料在检测各类气体方面的应用.最后,分析了生物质炭基气体传感器目前需要解决的问题,为拓宽该类传感器的实际应用提出了研发的思路.
Keyword :
传感器 传感器 半导体 半导体 气敏 气敏 炭材料 炭材料 生物质 生物质 非金属氧化物 非金属氧化物
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GB/T 7714 | 邱璐 , 陈享享 , 刘天豪 et al. 生物质炭材料在气体传感检测中的应用进展 [J]. | 复合材料学报 , 2025 , 42 (4) : 1722-1738 . |
MLA | 邱璐 et al. "生物质炭材料在气体传感检测中的应用进展" . | 复合材料学报 42 . 4 (2025) : 1722-1738 . |
APA | 邱璐 , 陈享享 , 刘天豪 , 柳方正 , 欧阳云飞 , 黄世毅 et al. 生物质炭材料在气体传感检测中的应用进展 . | 复合材料学报 , 2025 , 42 (4) , 1722-1738 . |
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This study investigates the ethanol gas-sensing mechanisms of ZnO nanocrystals with distinct morphologies, synthesized via a hydrothermal method using various alkali sources. Significant differences in the gas-sensing performance and morphology of ZnO samples synthesized with ammonium carbonate (Na2CO3), hexamethylenetetramine (HMTA), ammonia solution (NH3H2O), and sodium hydroxide (NaOH) were observed. ZnO were confirmed to be impurity-free through XRD analysis, and their morphological features were characterized by SEM. TEM, XPS, and FTIR were employed to further analyze the crystal structure and binding energy of ZnO. To elucidate the underlying mechanisms, density functional theory (DFT) calculations combined with electron depletion layer theory were applied to assess charge transfer processes and identify the most sensitive ZnO crystal planes for ethanol detection. Experimental gas-sensing tests, conducted across 5-1000 ppm ethanol concentrations within a 150-350 degrees C range, showed that ZnO prepared with Na2CO3, HMTA, and NaOH was responsive at high ethanol concentrations as low as 100 degrees C, while ZnO synthesized with ammonia required 250 degrees C to exhibit sensitivity. All ZnO samples demonstrated excellent recovery at low concentrations at 250 degrees C. By integrating experimental findings with theoretical insights, this study provides a comprehensive understanding of ethanol gas-sensing mechanisms in ZnO, highlighting the role of crystal plane engineering and charge transfer dynamics as critical factors influencing gas response.
Keyword :
DFT study DFT study ethanoll ethanoll gas sensor gas sensor ZnO ZnO
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GB/T 7714 | Liao, Yinying , Qiu, Lu , Ouyang, Yunfei et al. Effect of Alkali Source on Crystal Regulation and Ethanol Gas Sensing Properties of Nano-ZnO [J]. | SENSORS , 2024 , 24 (23) . |
MLA | Liao, Yinying et al. "Effect of Alkali Source on Crystal Regulation and Ethanol Gas Sensing Properties of Nano-ZnO" . | SENSORS 24 . 23 (2024) . |
APA | Liao, Yinying , Qiu, Lu , Ouyang, Yunfei , Feng, Dayang , Huang, Shiyi , Zhang, Zhaoyang et al. Effect of Alkali Source on Crystal Regulation and Ethanol Gas Sensing Properties of Nano-ZnO . | SENSORS , 2024 , 24 (23) . |
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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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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 CuO nanorods were in-situ grown on sensing electrodes by a chemical bath method for the detection of volatile organic compounds (VOCs). The synthesized material was characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR). The CuO nanorods, with lengths of 100-150 nm and diameters of 35-55 nm, were uniformly formed into a thin film on the electrode surface, with a thickness of approximately 1 mu m. The gas test results demonstrated that the sensor achieved a peak response of 1.32 for formaldehyde at 200 degrees C, and a response of 1.92 for ethanol at 175 degrees C. At a concentration of 50 ppm, ethanol and formaldehyde at an operating temperature of 200 degrees C exhibit short response/recovery times of 28 s/ 48 s for ethanol and 45 s/62 s for methanol, respectively, coupled with good reproducibility. Moreover, the sensor exhibited a power-law response to varying gas concentrations and showcased superior selectivity in the VOCs gas detection. This in-situ growing CuO of our work provides a facial gas sensing material fabricated method.
Keyword :
CuO CuO Gas sensor Gas sensor In-situ growing In-situ growing Nanorods Nanorods VOCs VOCs
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GB/T 7714 | Chen, Xiangxiang , Huang, Shiyi , Zhang, Zhaoyang et al. In-situ growth of CuO nanorods on sensing electrodes and their gas sensing properties of VOCs [J]. | CERAMICS INTERNATIONAL , 2024 , 50 (23) : 49915-49922 . |
MLA | Chen, Xiangxiang et al. "In-situ growth of CuO nanorods on sensing electrodes and their gas sensing properties of VOCs" . | CERAMICS INTERNATIONAL 50 . 23 (2024) : 49915-49922 . |
APA | Chen, Xiangxiang , Huang, Shiyi , Zhang, Zhaoyang , Qiu, Lu , Liu, Fangzheng , Liu, Tianhao et al. In-situ growth of CuO nanorods on sensing electrodes and their gas sensing properties of VOCs . | CERAMICS INTERNATIONAL , 2024 , 50 (23) , 49915-49922 . |
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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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