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学者姓名：华金铭
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Abstract ：
In this study, gold nanoparticles (AuNPs) and ZnO-decorated zirconia (AuNPs/ZnO-ZrO2) were synthesized through co-precipitation and hydrolysis coupled with heat treatment, and explored as a novel adsorbent for arsenic removal from aqueous solution. The effects of synthesis parameters were examined, such as support type, Zn/Zr mole ratio, co-precipitation method and calcination temperature. X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HR-TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and N-2 adsorption were used to investigate the enhancement of arsenic adsorption on the hybrid composites. It was found that the adsorption property of AuNPs/ZnO-ZrO2 was strongly dependent on support type, Zn/Zr mole ratio, co-precipitation method and calcination temperature. The optimized AuNPs/ZnO-ZrO2 exhibited the best adsorption capacity for arsenic at lower concentrations (less than 8 mg L-1), compared with ZnO-decorated zirconia (ZnO-ZrO2) and bare zirconia (ZrO2). The enhanced adsorption of arsenic by AuNPs/ZnO-ZrO2 was ascribed to the larger specific surface area, abundant hydroxyl groups and co-existance of ionic gold (Au(OH)(2)(+)) and gold clusters (Au delta+) highly dispersed on the surface which could act as smart scavengers for low-concentration arsenic from water. The adsorption equilibrium of arsenic on AuNPs/ZnO-ZrO2 fitted to the Langmuir, Brunauer-Emmett-Teller (BET) and Gunary models well and the Gunary model gave the best fit. Isotherm analysis results showed that the adsorption of arsenic on AuNPs/ZnO-ZrO2 occurred dominantly through monolayer formation but was a non-ideal Langmuir type adsorption. However, ZnO-ZrO2 showed much higher adsorption capacity for arsenic than that of ZrO2, which was mainly attributed to the formation of basic zinc carbonate (BZC) with rich structural hydroxyl groups and to the improvement in surface properties of zirconia. Significant multilayer adsorption was able to proceed on the surface at higher arsenic concentrations (more than 8 mg L-1), obeying the BET isotherm. (C) 2020 Elsevier B.V. All rights reserved.
Keyword ：
Characterization Characterization Complex decoration Complex decoration Enhanced arsenic adsorption Enhanced arsenic adsorption Gold nanoparticles Gold nanoparticles Zirconia Zirconia ZnO ZnO
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| GB/T 7714 | Hua, Jinming . Synthesis and characterization of gold nanoparticles (AuNPs) and ZnO decorated zirconia as a potential adsorbent for enhanced arsenic removal from aqueous solution [J]. | JOURNAL OF MOLECULAR STRUCTURE , 2021 , 1228 . |
| MLA | Hua, Jinming . "Synthesis and characterization of gold nanoparticles (AuNPs) and ZnO decorated zirconia as a potential adsorbent for enhanced arsenic removal from aqueous solution" . | JOURNAL OF MOLECULAR STRUCTURE 1228 (2021) . |
| APA | Hua, Jinming . Synthesis and characterization of gold nanoparticles (AuNPs) and ZnO decorated zirconia as a potential adsorbent for enhanced arsenic removal from aqueous solution . | JOURNAL OF MOLECULAR STRUCTURE , 2021 , 1228 . |
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Inorgano-organo-bentonite (PMBt) was synthesized through co-modification of bentonite with manganese oxides and poly(dimethyldiallylammonium chloride) (PDMDAAC), and was utilized to remove low-concentration arsenic from water. The hybrid material was characterized by means of X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and N-2 adsorption-desorption. It was revealed that the hybrid material possessed an amorphous structure and displayed uneven manganese oxides particles gathering about the bentonite aggregates with a large BET area of 128.90 m(2)/g. The effects of adsorption parameters were investigated, such as stirring time, arsenic concentrations, adsorbent dose, temperature, pH, added anions and ionic strength. The adsorption kinetics and equilibrium of arsenic on the co-modified bentonite were further determined. The results revealed that the adsorption of arsenic was dramatically affected with change in solution pH and significantly suppressed by phosphate anion. The adsorption kinetic data was best fitted with the linear pseudo-second-order model and was well with the non-linear Bangham model. The equilibrium data were well simulated with the Brunauer-Emmett-Teller, Freundlich and Redlich-Peterson isotherms by either non-linear or linear regression, respectively. The non-linear Langmuir isotherm showed best fitting and the maximal adsorption capacity was 9.14-9.99 mg/g, dependent on the error function used. It was suggested that the hybrid material had a heterogeneous surface and high affinity towards arsenic, which is highly favorable for arsenic adsorption following a non-ideal monolayer adsorption model. Based on the above comprehensive analysis, the plausible mechanism for arsenic adsorption on PMBt was suggested as a mixed removal mechanism i.e., electrostatic attraction followed by inner-sphere complexation.
Keyword ：
Arsenic adsorption Arsenic adsorption Co-modified bentonite Co-modified bentonite Isotherm Isotherm Kinetic Kinetic Manganese oxide Manganese oxide Poly(dimethyldiallylammonium chloride) Poly(dimethyldiallylammonium chloride)
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| GB/T 7714 | Hua, Jinming . Adsorption of low-concentration arsenic from water by co-modified bentonite with manganese oxides and poly(dimethyldiallylammonium chloride) [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2018 , 6 (1) : 156-168 . |
| MLA | Hua, Jinming . "Adsorption of low-concentration arsenic from water by co-modified bentonite with manganese oxides and poly(dimethyldiallylammonium chloride)" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 6 . 1 (2018) : 156-168 . |
| APA | Hua, Jinming . Adsorption of low-concentration arsenic from water by co-modified bentonite with manganese oxides and poly(dimethyldiallylammonium chloride) . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2018 , 6 (1) , 156-168 . |
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本发明公开了一种锌锆复合氧化物负载IB族金属纳米粒子除砷吸附剂及其制备方法。首先将IB族金属盐溶液、锌盐溶液和锆盐溶液配制混合金属盐溶液；然后以预调pH值的去离子水作为底液，将混合金属盐溶液和沉淀剂溶液加入进行共沉淀，终点pH值控制为7~10；滴加结束、继续搅拌，进行沉淀物的加热水解；离心分离得水解产物；再经洗涤、离心、烘干、焙烧即制得所述除砷吸附剂。本发明制得的除砷吸附剂，比表面积较大、孔径分布窄、金属纳米粒子高度分散负载至无定形态复合氧化物载体，具有去除率高、吸附容量大、使用量少和吸附速率快等特点，可用于地下水、地表水中低浓度砷污染物以及低浓度含砷工业废水的深度处理。
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| GB/T 7714 | 华金铭 , 胡俊 . 锌锆复合氧化物负载IB族金属纳米粒子除砷吸附剂及其制备方法 : CN201710893529.4[P]. | 2017/9/28 . |
| MLA | 华金铭 等. "锌锆复合氧化物负载IB族金属纳米粒子除砷吸附剂及其制备方法" : CN201710893529.4. | 2017/9/28 . |
| APA | 华金铭 , 胡俊 . 锌锆复合氧化物负载IB族金属纳米粒子除砷吸附剂及其制备方法 : CN201710893529.4. | 2017/9/28 . |
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A series of K modified Ag-Fe/ZnO-ZrO2 catalysts were prepared by co-precipitation method under different calcination temperatures. The effect of calcination temperature on the catalytic performance for higher alcohols and dimethyl ether (DME) synthesis from CO hydrogenation was investigated. The catalysts were characterized by nitrogen adsorption, XRD, H2-TPR and CO-TPD. The results showed that the catalyst calcined at 250 could not reach the optimal performance due to insufficient active sites formed at the lower calcination temperature. The catalyst calcined at 300 exhibited highest CO conversion and higher selectivity of higher alcohols and DME and highest space time yield of higher alcohols and DME reached. As the calcination temperature increased further, the CO conversion decreased, while the selectivity of higher alcohols decreased at first and then increased, the selectivity of DME increased. The catalytic performance of the catalyst was mainly related with its specific surface area, reduction capacity, the dispersion of the σ-AgFeO2 species and CO adsorption-desorption properties. It was proved that the catalyst with larger specific surface area, being easily reduced, higher dispersion of σ-AgFeO2 specie and more CO adsorption active sites, would be helpful for CO hydrogenation conversion. The decrease of the non-dissociative adsorption strength for CO on the surface active sites of the catalyst is favorable for the generation of higher alcohols and DME, while the increase of the dissociative adsorption strength for CO is not favorable for the formation of hydrocarbons. ©, 2015, Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology. All right reserved.
Keyword ：
Calcination Calcination Catalyst activity Catalyst activity Catalyst selectivity Catalyst selectivity Dispersions Dispersions Dissociation Dissociation Fuels Fuels Gas adsorption Gas adsorption Hydrogenation Hydrogenation Precipitation (chemical) Precipitation (chemical) Specific surface area Specific surface area
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| GB/T 7714 | Ran, Lei , Hua, Jin-Ming , Wei, Ke-Mei . Effect of calcination temperature on K modified Ag-Fe/ZnO-ZrO2 catalyst structure and its performance for higher alcohols and DME synthesis from CO hydrogenation [J]. | Journal of Fuel Chemistry and Technology , 2015 , 43 (3) : 323-330 . |
| MLA | Ran, Lei 等. "Effect of calcination temperature on K modified Ag-Fe/ZnO-ZrO2 catalyst structure and its performance for higher alcohols and DME synthesis from CO hydrogenation" . | Journal of Fuel Chemistry and Technology 43 . 3 (2015) : 323-330 . |
| APA | Ran, Lei , Hua, Jin-Ming , Wei, Ke-Mei . Effect of calcination temperature on K modified Ag-Fe/ZnO-ZrO2 catalyst structure and its performance for higher alcohols and DME synthesis from CO hydrogenation . | Journal of Fuel Chemistry and Technology , 2015 , 43 (3) , 323-330 . |
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Abstract ：
采用并流共沉淀法在不同焙烧温度下制备 K 改性 Ag－Fe／ZnO－ZrO2催化剂，考察不同焙烧温度对催化剂 CO 加氢合成低碳混合醇醚反应性能的影响。通过 N2物理吸附（N2－adsorption）、X 射线衍射（XRD）、氢气程序升温还原（H2－TPR）、一氧化碳程序升温脱附（CO－TPD）等手段对催化剂进行表征。结果表明，250℃焙烧的催化剂，由于焙烧温度较低，表面尚未形成足够多的活性位，未能达到最佳的催化性能；300℃焙烧的催化剂，其 CO 转化率最高、醇醚选择性较高，醇醚时空产率达到最大值。随着焙烧温度进一步升高，CO 转化率逐渐降低，醇选择性先降低后增大，二甲醚（DME）选择性逐渐增大，醇醚时空产率逐渐降低。催化剂性能主要与其比表面积、还原性能、所含银铁复合物分散度及 CO 吸脱附性能有关，即比表面积较大、易于被还原、银铁复合物分散度较高以及较多的 CO 吸脱附活性位，有利于催化剂 CO 加氢转化。催化剂表面活性位对 CO 的非解离吸附强度降低，有利于醇醚产物的生成；而对 CO 的解离吸附强度增强，则不利于烃类产物的生成。
Keyword ：
Ag-Fe 催化剂 Ag-Fe 催化剂 一氧化碳加氢 一氧化碳加氢 低碳混合醇醚 低碳混合醇醚 焙烧温度 焙烧温度
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| GB/T 7714 | 冉磊 , 华金铭 , 魏可镁 . 焙烧温度对K改性Ag－Fe／ZnO－ZrO2催化剂结构和CO加氢合成低碳混合醇醚性能的影响 [J]. | 燃料化学学报 , 2015 , (3) : 323-330 . |
| MLA | 冉磊 等. "焙烧温度对K改性Ag－Fe／ZnO－ZrO2催化剂结构和CO加氢合成低碳混合醇醚性能的影响" . | 燃料化学学报 3 (2015) : 323-330 . |
| APA | 冉磊 , 华金铭 , 魏可镁 . 焙烧温度对K改性Ag－Fe／ZnO－ZrO2催化剂结构和CO加氢合成低碳混合醇醚性能的影响 . | 燃料化学学报 , 2015 , (3) , 323-330 . |
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Four modifiers, amorphous iron (hydr)oxides (Fe-x(OH)(y)), manganese oxides (MnxOy) and cationic surfactants, cetyltrimethylammonium bromide (CTMAB), and poly(dimethyldiallylammonium chloride) (PDMDAAC), were used to synthesize single and complex modified bentonite. Arsenic removal by modified bentonite was investigated through effects of the type, combination and adding level of modifiers. X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and N-2 adsorption-desorption were used to explore the characteristics of the original and modified bentonite. It was found that the type, combination and adding amount of modifiers would have a noticeable influence on the structure and adsorption behavior of resulting bentonite adsorbents. The complex modified bentonite, with manganese oxides and then PDMDAAC at proper addition level, showed the best adsorption properties for arsenic, which could be due to a synergistic effect between PDMDAAC and manganese oxides during modification process. PDMDAAC was found to be favorable for coating of manganese oxides onto bentonite. The adsorbing capacity of modified bentonite depended not only on specific surface area (SSA), but mainly on composite components and/or their specific surface properties. (C) 2015 Elsevier B.V. All rights reserved.
Keyword ：
Arsenic removal Arsenic removal Characterization Characterization Complex modification Complex modification Inorgano-organo-bentonite Inorgano-organo-bentonite
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| GB/T 7714 | Hua, Jinming . Synthesis and characterization of bentonite based inorgano-organo-composites and their performances for removing arsenic from water [J]. | APPLIED CLAY SCIENCE , 2015 , 114 : 239-246 . |
| MLA | Hua, Jinming . "Synthesis and characterization of bentonite based inorgano-organo-composites and their performances for removing arsenic from water" . | APPLIED CLAY SCIENCE 114 (2015) : 239-246 . |
| APA | Hua, Jinming . Synthesis and characterization of bentonite based inorgano-organo-composites and their performances for removing arsenic from water . | APPLIED CLAY SCIENCE , 2015 , 114 , 239-246 . |
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采用“预处理(酸化沉降+铁炭微电解+石灰中和)-生化(水解酸化+两级好氧生化)-深度处理(Fenton试剂催化氧化+石灰中和)”组合工艺对提铜选矿药剂生产废水进行现场中试实验研究,主要考察其COD去除、脱色、除味效果,重点考察生化单元运行特性及其对有机物的去除能力.实验结果表明,该组合工艺对该生产废水具有较好的净化效果,出水清澈透明、无气味,主要出水水质指标pH、色度、COD可以达到《污水综合排放标准(GB8976-1996)》二级标准.
Keyword ：
催化氧化 催化氧化 好氧生化 好氧生化 水解酸化 水解酸化 选矿药剂生产废水 选矿药剂生产废水 铁炭微电解 铁炭微电解
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| GB/T 7714 | 华金铭 , 魏可镁 , 郑起 et al. 物化-生化组合工艺处理提铜选矿药剂生产废水中试实验研究 [J]. | 环境工程学报 , 2013 , 7 (1) : 207-213 . |
| MLA | 华金铭 et al. "物化-生化组合工艺处理提铜选矿药剂生产废水中试实验研究" . | 环境工程学报 7 . 1 (2013) : 207-213 . |
| APA | 华金铭 , 魏可镁 , 郑起 , 郭晓珊 , 朱秋华 . 物化-生化组合工艺处理提铜选矿药剂生产废水中试实验研究 . | 环境工程学报 , 2013 , 7 (1) , 207-213 . |
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A pilot-scale field test was conducted on treatment of wastewater from production of flotation reagent for extracting copper, by the "acidification-sedimentation + Fe-C micro-electrolysis + lime neutralization + hydrolytic acidification + aerobic biological oxidation + catalytic oxidation by Fenton reagent + lime neutralization" process, and the removal efficiency of COD, decolourization and deodorization were investigated mainly. The test focused on the operating character of biochemical unit and its COD removal. The experimental results show that the combination technology can effectively decontaminate the wastewater. The ultimate effluent is clear, odorless, and its content of COD, chroma, pH etc will satisfy the class II criteria of the Integrated Wastewater Discharge Standard (GB8976-1996).
Keyword ：
Aerobic biological oxidation catalytic oxidation; Fe-C micro-electrolysis; Hydrolytic acidification; Wastewater from production of flotation reagent Aerobic biological oxidation catalytic oxidation; Fe-C micro-electrolysis; Hydrolytic acidification; Wastewater from production of flotation reagent
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| GB/T 7714 | Hua, J. , Wei, K. , Zheng, Q. et al. Pilot study on treatment of wastewater from production of flotation reagent for extracting copper by physicochemical-biological process [J]. | Chinese Journal of Environmental Engineering , 2013 , 7 (1) : 207-213 . |
| MLA | Hua, J. et al. "Pilot study on treatment of wastewater from production of flotation reagent for extracting copper by physicochemical-biological process" . | Chinese Journal of Environmental Engineering 7 . 1 (2013) : 207-213 . |
| APA | Hua, J. , Wei, K. , Zheng, Q. , Guo, X. , Zhu, Q. . Pilot study on treatment of wastewater from production of flotation reagent for extracting copper by physicochemical-biological process . | Chinese Journal of Environmental Engineering , 2013 , 7 (1) , 207-213 . |
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The thermal desorption technique has been explored experimentally to remove mercury from the gold-loaded granule activated carbon (GAC) co-adsorbed during heap leaching of gold ores bearing mercury. The effects of treatment temperature, retention time and flow rate of steam used as purge gas on residual mercury levels were investigated. Characterization techniques such as N-2 adsorption-desorption, X-ray powder diffraction and X-ray photoelectron spectroscopy. were employed to understand how thermal treatment affects the gold elution in a caustic cyanide-free eluant from the treated GAC. The results showed that mercury desorption was strongly affected by the treatment temperature and steam flow rate. Treatment for 3 h at 550 degrees C under steam atmosphere with 0.4 m(3)/h flow rate was allowed to remove more than 99.78% mercury and the content of residual mercury in the treated GAC was decreased to 0.035 g/kg, likely reaching the thresh level of mercury extraction during gold elution in a caustic cyanide eluant. Meanwhile, activated carbon was partially regenerated, with only 4.06% weight loss of carbon, mainly due to microporosity recovery. However, it was observed that the thermal process would have heavily influenced elution of gold from the treated activated carbon in a caustic eluant without sodium cyanide. This phenomenon has been attributed primarily to the change of chemical state of gold species and accumulation of highly dispersed gold species and even formation of more stable gold nano-particles caused by a combination of promotion of high temperature and steam oxidation. The elution of gold from the treated sample could be improved through introduction of NaCN into the caustic eluant. However only 83.84% of gold was eluted, probably because the elution time was insufficient. (C) 2012 Elsevier B.V. All rights reserved.
Keyword ：
Gold elution Gold elution Gold-loaded GAC Gold-loaded GAC Mercury removal Mercury removal Thermal desorption Thermal desorption
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| GB/T 7714 | Hua, J. M. , Wei, K. M. , Zheng, Q. . Thermal desorption of mercury from gold-loaded granule activated carbon and its effect on gold elution [J]. | HYDROMETALLURGY , 2012 , 117 : 86-92 . |
| MLA | Hua, J. M. et al. "Thermal desorption of mercury from gold-loaded granule activated carbon and its effect on gold elution" . | HYDROMETALLURGY 117 (2012) : 86-92 . |
| APA | Hua, J. M. , Wei, K. M. , Zheng, Q. . Thermal desorption of mercury from gold-loaded granule activated carbon and its effect on gold elution . | HYDROMETALLURGY , 2012 , 117 , 86-92 . |
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采用7种沉淀剂(K2CO3, Na2CO3, NH4OH, (NH4)2CO3, NaOH, KOH和尿素)通过共沉淀法制备了低温水煤气变换(WGS) Au/Fe2O3催化剂,考察了沉淀剂种类对其催化性能的影响. 通过N2吸附, X射线荧光光谱、 X射线衍射、 H2程序升温还原和CO程序升温脱附等表征手段,探讨了不同沉淀剂影响Au/Fe2O3催化剂WGS性能的原因. 结果表明,采用K2CO3和Na2CO3制备的催化剂样品在200 ℃以上具有较好的活性和稳定性,其中K2CO3是最佳沉淀剂. 而采用NH4OH和(NH4)2CO3制备的样品的催化活性相对较低,在200 ℃达到峰值. 由其它3种沉淀剂制备的样品的催化活性都较差, CO转化率最高只有35%. 沉淀剂种类不仅明显地影响金离子和铁离子的共沉淀,而且会明显地影响共沉淀物在后续焙烧过程中的结晶行为. 前者将影响金的负载量,后者则影响金粒子的分散度以及氧化铁载体的还原性质和对CO的吸脱附性能. Au/Fe2O3催化剂的低温高活性及其稳定性归因于高度分散的金粒子及其与易被还原的氧化铁载体间的协同作用. 催化剂中金负载量增大、金粒子分散度提高以及氧化铁晶粒减小均有利于其催化性能的提高.
Keyword ：
共沉淀 共沉淀 氧化铁 氧化铁 水煤气变换反应 水煤气变换反应 沉淀剂 沉淀剂 负载型催化剂 负载型催化剂 金 金
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| GB/T 7714 | 华金铭 , 郑起 , 魏可镁 et al. 沉淀剂种类对水煤气变换Au/Fe2O3催化剂结构和催化性能的影响 [J]. | 催化学报 , 2006 , 27 (11) : 1012-1018 . |
| MLA | 华金铭 et al. "沉淀剂种类对水煤气变换Au/Fe2O3催化剂结构和催化性能的影响" . | 催化学报 27 . 11 (2006) : 1012-1018 . |
| APA | 华金铭 , 郑起 , 魏可镁 , 林性贻 . 沉淀剂种类对水煤气变换Au/Fe2O3催化剂结构和催化性能的影响 . | 催化学报 , 2006 , 27 (11) , 1012-1018 . |
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