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学者姓名：席晓丽
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摘要 ：
This paper reports a novel method for rapid atomic-level reconstruction of tungsten carbide (WC) using Na2CO3- containing molten salt. Herein, WC was used as consumable anode and Na2CO3 was active species on WC anode and carbon donor. Thermodynamic calculations were used to verify the feasibility of this electrolytic method for reconstructing WC. Experimental results showed that the addition of Na2CO3 significantly enhanced dissolution efficiency of WC. Therefore, more tungsten (W) source was supplied. Electrochemical analysis demonstrated that Na2CO3 also supplied carbon by two-step reduction process, which led to the formation of WC. These experiments confirmed that cathode product was converted from W to WC by the introduction of Na2CO3 additive into molten salt. WC phase started to form at cell voltages above 2.2 V. In initial stage of reaction, carbonate was preferentially reduced in cathode region to form amorphous C. As the reaction proceeded, W ions migrated from anode and began to participate in reduction process, forming W. Finally, W was transformed to WC by carbonization process.
关键词 ：
Sodium carbonate Sodium carbonate Molten salt electrolysis Molten salt electrolysis Consumable anode Consumable anode Tungsten carbide Tungsten carbide
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| GB/T 7714 | Zhang, Qinghua , Xi, Xiaoli , Zhang, Liwen et al. In-situ electrochemical reconstruction of tungsten carbide using Na2CO3-containing molten salt [J]. | CERAMICS INTERNATIONAL , 2022 , 48 (13) : 19444-19451 . |
| MLA | Zhang, Qinghua et al. "In-situ electrochemical reconstruction of tungsten carbide using Na2CO3-containing molten salt" . | CERAMICS INTERNATIONAL 48 . 13 (2022) : 19444-19451 . |
| APA | Zhang, Qinghua , Xi, Xiaoli , Zhang, Liwen , Nie, Zuoren . In-situ electrochemical reconstruction of tungsten carbide using Na2CO3-containing molten salt . | CERAMICS INTERNATIONAL , 2022 , 48 (13) , 19444-19451 . |
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摘要 ：
The sustainable development of tungsten and molybdenum resources requires a new clean and recyclable separation technology. This work proposes a recyclable clean separation technology of tungsten and molybdenum with a porous amine resin. The resin was well prepared by assembling amine groups on trioctylamine (TOA) and the porous resin matrix D301 by the dipping method. Here, pH 7.8, temperature 25 & DEG;C, and reaction time 240 min was used as optimum condition, resulting in the highest sorption capacity 236 mg g(-1), and it has a good cycle performance, exhibiting a retention rate of 90% after five cycles. Experimental spectroscopy combined theoretical calculation confirmed that this sustainable sorption behavior is substantially related to the amine functional groups on the resin. Experimental spectroscopy illustrated that the Cl- ions in the amine resin and the MoS(4)(2-& nbsp;)ions were subjected to ion exchange. Theoretical investigations further confirm that the sorption site is at the N atoms, the sorption behavior is chemical binding with the binding energy -0.055 Ha, and the bonding method is the s orbit of the N atoms in the amine resin hybridized with the s orbit of the S atoms in the amine resin. Owing to such an excellent performance in the selective sorption of molybdenum from the tungstate solution, the amine resin is greatly promising in the tungsten and molybdenum waste recovery field.
关键词 ：
Sorption Sorption Molybdenum Molybdenum Tungsten Tungsten Resin Resin Recovery Recovery
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| GB/T 7714 | Guo, Fan , Xi, Xiaoli , Ma, Liwen et al. Property and mechanism on sorption of molybdenum from tungstate solution with a porous amine resin [J]. | JOURNAL OF CLEANER PRODUCTION , 2022 , 335 . |
| MLA | Guo, Fan et al. "Property and mechanism on sorption of molybdenum from tungstate solution with a porous amine resin" . | JOURNAL OF CLEANER PRODUCTION 335 (2022) . |
| APA | Guo, Fan , Xi, Xiaoli , Ma, Liwen , Nie, Zuoren . Property and mechanism on sorption of molybdenum from tungstate solution with a porous amine resin . | JOURNAL OF CLEANER PRODUCTION , 2022 , 335 . |
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摘要 ：
The effects of alloying element Al on microstructure, tensile properties and aqueous corrosion behavior of Cantor alloy are investigated. The results show that the crystal structure of Cantor alloy does not change with the addition of 6 at.% Al, and the alloy still maintains a single FCC structure. The two alloys have typical dendritic morphology and obvious dendritic segregation. The yield strength increases by 24% and reaches 219 MPa without obvious deterioration of ductility through addition of Al. Although both Cantor and Cantor-Al alloys exhibit pitting corrosion in 3.5 wt.% NaCl solution due to non-uniform distribution of elements, addition of Al improves the corrosion resistance of Cantor alloy through formation of protective Al2O3 scale.
关键词 ：
tensile properties tensile properties corrosion properties corrosion properties crystal structure crystal structure Cantor alloy Cantor alloy
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| GB/T 7714 | Pang, Baolin , Wang, Man , Liu, Tanying et al. Effects of Al Addition on Tensile Properties and Aqueous Corrosion Behavior of Cantor Alloy [J]. | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2022 , 31 (7) : 5602-5610 . |
| MLA | Pang, Baolin et al. "Effects of Al Addition on Tensile Properties and Aqueous Corrosion Behavior of Cantor Alloy" . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 31 . 7 (2022) : 5602-5610 . |
| APA | Pang, Baolin , Wang, Man , Liu, Tanying , Xi, Xiaoli . Effects of Al Addition on Tensile Properties and Aqueous Corrosion Behavior of Cantor Alloy . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2022 , 31 (7) , 5602-5610 . |
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摘要 ：
The leaching mechanism of the spent selective catalytic reduction (SCR) catalyst was investigated by density functional theory (DFT) calculations and experiments. Three models, namely V2O5/TiO2, WO3-V2O5/TiO2, and WO3/TiO2, were created to simulate the spent SCR catalyst. Interaction between the surface clusters and the leaching agents of NaOH, H2SO4, HCl and HNO3 was investigated by DFT calculations. The adsorption site was determined through electrostatic potential and adsorption energy. The calculations showed that NaOH tended to be adsorbed on V and W atoms. H2SO4, HCl and HNO3 tended to be adsorbed on specific O atoms. H2SO4 dissociated on all three models, HCl dissociated on V2O5/TiO2 and WO3-V2O5/TiO2, while HNO(3 )dissociated only on V2O5/TiO2. The order of leaching ability among leaching agents was NaOH > H2SO4 > HCl > HNO3. Ex-periments showed that the leaching ratios of V and W in NaOH solution were 82.4% and 54.3%. In acid solution, the leaching ratio of V was 69.0% for H2SO4, 52.5% for HCl, and 42.2% for HNO3, while W was hardly leached out. After acid leaching, the change in the TiO2 lattice parameter was greater than that after alkaline leaching. The experimental results were found to be consistent with the calculations.
关键词 ：
Leaching mechanism Leaching mechanism Adsorption Adsorption Density functional theory Density functional theory Spent SCR catalyst Spent SCR catalyst
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| GB/T 7714 | Nie, Zhuanghua , Ma, Liwen , Xi, Xiaoli et al. Studying the leaching mechanism of spent SCR catalyst with different leaching agents (NaOH, H2SO4, HCl and HNO3) using DFT calculations [J]. | APPLIED SURFACE SCIENCE , 2022 , 584 . |
| MLA | Nie, Zhuanghua et al. "Studying the leaching mechanism of spent SCR catalyst with different leaching agents (NaOH, H2SO4, HCl and HNO3) using DFT calculations" . | APPLIED SURFACE SCIENCE 584 (2022) . |
| APA | Nie, Zhuanghua , Ma, Liwen , Xi, Xiaoli , Guo, Fan , Nie, Zuoren . Studying the leaching mechanism of spent SCR catalyst with different leaching agents (NaOH, H2SO4, HCl and HNO3) using DFT calculations . | APPLIED SURFACE SCIENCE , 2022 , 584 . |
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摘要 ：
Tungsten trioxide has attracted extensive attention for photocatalytic applications owing to its unique structure and intrinsic merits; however, the small specific surface area and rapid electron-hole recombination still limit its adsorption and photocatalytic efficiency. Herein, WO3 center dot 0.33H(2)O/g-C3N4 nanocomposite photocatalysts were designed and constructed using a facile low temperature hydrothermal method. The interaction between 1D WO3 center dot 0.33H(2)O nanorods and 2D g-C3N4 nanosheets produces a heterojunction with enhanced adsorption and photocatalytic degradation performance towards methylene blue pollutant. It is found that the synergistic effect of the surface charge and specific surface area significantly enhances the adsorption capacity which can be up to 23 times higher than that of WO3 center dot 0.33H(2)O, and the optimal photocatalytic activity is 3.67 and 1.70 times higher than that of pristine WO3 center dot 0.33H(2)O and g-C3N4, respectively.
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| GB/T 7714 | Shen, Yuegang , Liu, Yangsi , Xi, Xiaoli et al. Hydrothermal construction of WO3 center dot 0.33H(2)O/g-C3N4 nanocomposites with enhanced adsorption and photocatalytic activity [J]. | CRYSTENGCOMM , 2022 , 24 (18) : 3437-3447 . |
| MLA | Shen, Yuegang et al. "Hydrothermal construction of WO3 center dot 0.33H(2)O/g-C3N4 nanocomposites with enhanced adsorption and photocatalytic activity" . | CRYSTENGCOMM 24 . 18 (2022) : 3437-3447 . |
| APA | Shen, Yuegang , Liu, Yangsi , Xi, Xiaoli , Nie, Zuoren . Hydrothermal construction of WO3 center dot 0.33H(2)O/g-C3N4 nanocomposites with enhanced adsorption and photocatalytic activity . | CRYSTENGCOMM , 2022 , 24 (18) , 3437-3447 . |
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摘要 ：
A facile microwave-assisted precipitation method was used to synthesize hierarchical WO3 center dot H2O using urea as the shape control agent. The morphologies of WO3 center dot H2O can be controlled by tuning the concentration of urea. For model dyes of methylene blue (MB), rhodamine B and methyl orange which possess different sizes and charges in solution, WO3 center dot H2O exhibits excellent selective adsorption capacity, especially for MB. The adsorption kinetic and adsorption isotherm could be described by the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, respectively. The experimental results indicate that the maximum uptake capacity of the flower-like WO3 center dot H2O for MB is 478.34 mg g(-1) in neutral pH, which is higher than many literature reports. In addition, the adsorption mechanism of WO3 center dot H2O is proposed. [GRAPHICS] .
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| GB/T 7714 | Wang, Jianyu , Liu, Yangsi , Xi, Xiaoli et al. Microwave-assisted synthesis of hierarchical WO3 center dot H2O and its selective adsorption: kinetics, isotherm and mechanism [J]. | JOURNAL OF MATERIALS SCIENCE , 2022 , 57 (13) : 6881-6899 . |
| MLA | Wang, Jianyu et al. "Microwave-assisted synthesis of hierarchical WO3 center dot H2O and its selective adsorption: kinetics, isotherm and mechanism" . | JOURNAL OF MATERIALS SCIENCE 57 . 13 (2022) : 6881-6899 . |
| APA | Wang, Jianyu , Liu, Yangsi , Xi, Xiaoli , Nie, Zuoren . Microwave-assisted synthesis of hierarchical WO3 center dot H2O and its selective adsorption: kinetics, isotherm and mechanism . | JOURNAL OF MATERIALS SCIENCE , 2022 , 57 (13) , 6881-6899 . |
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摘要 ：
This study examined the possibility of deep significance for the reduction of low-valence tungsten to inhibit disproportionation reactions in various molten alkali chlorides. Electrolysis and electrochemical tests of tungsten carbide were carried out in molten LiCl, LiCl-KCl, NaCl-KCl, NaCl-CsCl, and KCl-CsCl. One finding was that the reduction valence of tungsten ions decreased as the radius of the solvent alkali ion increased. This phenomenon may be viewed from the dissolution of tungsten carbide and the existence and deposition of tungsten ions. The mechanism of tungsten ion reduction and the stable configuration of tungsten ion groups were confirmed via a detailed study of the computational calculation. The increase in the radius of the solvent alkali ion was conducive to the dissolution of tungsten from tungsten carbide in the form of low valence state. Other results also indicated that W(ii) ion groups first deposited on the cathode. They had the advantages of smaller coordination numbers and faster diffusion combined. Morphological and composition analysis results of the products are also presented.
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| GB/T 7714 | Feng, Ming , Xi, Xiao-li , Zhang, Li-wen et al. Valence and coordination form transition of tungsten ions in molten alkali chlorides [J]. | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2022 , 24 (34) : 20130-20137 . |
| MLA | Feng, Ming et al. "Valence and coordination form transition of tungsten ions in molten alkali chlorides" . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS 24 . 34 (2022) : 20130-20137 . |
| APA | Feng, Ming , Xi, Xiao-li , Zhang, Li-wen , Nie, Zuo-ren . Valence and coordination form transition of tungsten ions in molten alkali chlorides . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2022 , 24 (34) , 20130-20137 . |
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摘要 ：
The popularization of electric vehicles drives the extensive use of power lithium-ion batteries (LIBs) and their abandonment after retirement. Spent power LIBs have a high economic value because they contain valuable metals which need to be recovered. In this study, the separation and comprehensive recovery of valuable metallic elements, including Co, Ni, and Li, from spent power LIBs were realized by a hydrometallurgical process of "calcination-leaching-synergistic extraction-synthesis". The results showed that, under the optimal conditions, the extraction efficiencies of impurities, such as Al and Cu, by P204 were 91% and 90%, respectively. A P507-N235 synergistic system was proposed to extract Co over Ni and Li with the maximum synergistic coefficient of 12.6. The extraction efficiency of Co, Ni, and Li was 99.5%, 3.9%, and 9.7%, respectively, and the separation coefficients of beta(Co/Ni) and beta(Co/Li) were 200.6 and 300.3, respectively. Cobalt oxalate, nickel oxalate, and lithium carbonate were finally obtained. Comprehensive recovery of valuable metals was realized, and the total recovery efficiency of Li, Ni, and Co was 84.1%, 93.1%, and 96.5%, respectively. This study provides positive significance for the improvement of cobalt extraction technology and comprehensive recycling efficiency of spent power LIBs.
关键词 ：
synergistic extraction synergistic extraction acid leaching acid leaching spent power lithium-ion batteries spent power lithium-ion batteries cathode active materials cathode active materials recovery recovery
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| GB/T 7714 | Ma, Liwen , Xi, Xiaoli , Zhang, Zhengzheng et al. Separation and Comprehensive Recovery of Cobalt, Nickel, and Lithium from Spent Power Lithium-Ion Batteries [J]. | MINERALS , 2022 , 12 (4) . |
| MLA | Ma, Liwen et al. "Separation and Comprehensive Recovery of Cobalt, Nickel, and Lithium from Spent Power Lithium-Ion Batteries" . | MINERALS 12 . 4 (2022) . |
| APA | Ma, Liwen , Xi, Xiaoli , Zhang, Zhengzheng , Lyu, Zhe . Separation and Comprehensive Recovery of Cobalt, Nickel, and Lithium from Spent Power Lithium-Ion Batteries . | MINERALS , 2022 , 12 (4) . |
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摘要 ：
纳米氧化钨作为一种具有独特物理化学性质的半导体功能材料,已被广泛应用于环境、能源、生命科学、信息技术等领域。本文基于第一性原理计算在纳米氧化钨中的应用进展,概述了量子力学基础上的第一性原理及密度泛函理论的发展历程及基本理论,介绍了该领域常用的MS (Materials studio)、VASP (Vienna ab initio simulation package)等模拟计算软件,并分类阐述了第一性原理计算对氧化钨的微观电子结构、物质相互作用、分子热动力学等方面的研究成果。最后提出了第一性原理计算在纳米氧化钨这类半导体材料研究中存在的问题及未来发展趋势。
关键词 ：
电子结构 电子结构 第一性原理 第一性原理 综述 综述 模拟计算 模拟计算 纳米氧化钨 纳米氧化钨
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| GB/T 7714 | 赵林艳 , 刘阳思 , 席晓丽 et al. 基于第一性原理计算的纳米氧化钨研究进展 [J]. | 无机材料学报 , 2021 , (11) : 1125-1136 . |
| MLA | 赵林艳 et al. "基于第一性原理计算的纳米氧化钨研究进展" . | 无机材料学报 11 (2021) : 1125-1136 . |
| APA | 赵林艳 , 刘阳思 , 席晓丽 , 马立文 , 聂祚仁 . 基于第一性原理计算的纳米氧化钨研究进展 . | 无机材料学报 , 2021 , (11) , 1125-1136 . |
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摘要 ：
从钼的多元素体系中协同萃取钼有更好效果。综述了协同萃取法在不同含钼多元素体系中萃取钼的研究状况,主要涉及钼-钨、钼-铁/铝/镍等体系及钼-钒体系,阐述了协萃机制及酸碱耦合作用和疏水效应对协同萃取的影响,以及离子液体萃取技术的应用状况,展望了协萃体系的发展前景。
关键词 ：
分离 分离 协同萃取 协同萃取 机制 机制 钼 钼
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| GB/T 7714 | 蔡圆圆 , 马立文 , 席晓丽 . 从含钼多元素体系中协同萃取钼的研究现状 [J]. | 湿法冶金 , 2021 , 40 (03) : 179-185 . |
| MLA | 蔡圆圆 et al. "从含钼多元素体系中协同萃取钼的研究现状" . | 湿法冶金 40 . 03 (2021) : 179-185 . |
| APA | 蔡圆圆 , 马立文 , 席晓丽 . 从含钼多元素体系中协同萃取钼的研究现状 . | 湿法冶金 , 2021 , 40 (03) , 179-185 . |
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