JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
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2020
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IF 1.701
Xiao-Yan Xue,Hu-Fei Li,Yong Wang,Fu-Qiang An,Tuo-Ping Hu,Jian-Feng Gao
Two novel adsorbents (AGD301 and ArgD301) were successfully prepared through ring-opening reaction. The adsorption performance and recognition selectivity of AGD301 and ArgD301 towards AuCl4− were studied by batch adsorption experiments. The results showed that adsorption time, pH, temperature and solution concentration had a significant influence on the adsorption performance. At 298 K and pH of 2, the equilibrium adsorption capacity of AGD301 and ArgD301 towards AuCl4− could reach 400.75 and 451.67 mg·g−1, respectively. In addition, AGD301 and ArgD301 possessed excellent selectivity and good reusability.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
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2017
·Vol. 39
·期 1
·58-64
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IF 0.602
Min Li,Xiao-yan Xue,Yong Wang,Fu-qiang An,Tuo-ping Hu,Jian-feng Gao
In this article, a new surface imprinted polymer D301- g -IIPDMC is successfully prepared using AuCl 4 − as a template. The adsorption and recognition performances of D301- g -IIPDMC for AuCl 4 − are studied by using a static method and competitive adsorption experiment. The experimental results show that D301- g -IIPDMC possesses very strong adsorption affinity and excellent recognition for AuCl 4 − . The adsorption capacity of D301- g -IIPDMC for AuCl 4 − is 831.08 mg/g, and the selectivity coefficient relative to CuCl 4 2− is 128. The adsorption behavior is an endothermic spontaneous process, and fit well with pseudo-second order kinetic model and Freundlich adsorption isotherm model. Besides, D301- g -IIPDMC is desorbed easily and exhibits excellent reusability.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Desalination and Water Treatment
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2024
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IF 1
Xiao-Yan Xue,Hu-Fei Li,Yong Wang,Fu-Qiang An,Tuo-Ping Hu,Jian-Feng Gao
In this study, two novel adsorbents (TSCD301 and TCHD301) were successfully synthesized through ring-opening reaction between the amino of thiosemicarbazide or thiocarbohydrazide and the epoxy group of poly(glycidyl methacrylate). The adsorption performance and recognition selectivity of TCHD301 and TSCD301 toward AuCl 4 – were studied by batch adsorption experiments. The results showed that the equilibrium adsorption capacity of TSCD301 and TCHD301 toward AuCl 4 – could reach 410.76 and 566.59 mg·g –1 at 298 K and pH of 2, respectively. The adsorption process could be described using the pseudo-second-order model, and the adsorption behavior of AuCl 4 – on TSCD301 and TCHD301 was typical monolayer adsorption. In mixed solution, two adsorbents had excellent selectivity toward AuCl 4 – . In addition, the adsorption capacity of adsorbent did not change significantly in repeated adsorption-desorption experiment.
研究领域:
环境化学
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材料科学
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湿法冶金
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吸附技术
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DOI
高影响因子
ANALYST
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2012
·Vol. 137
·期 22
·5382-5386
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IF 4.23
Wei Chen,Hao-Hua Deng,Lei Hong,Zeng-Qiang Wu,Sheng Wang,Ai-Lin Liu,Xin-Hua Lin,Xing-Hua Xia
In this study, we demonstrate a more sensitive colorimetric assay for the detection of melamine based on the strong attraction between exocyclic amine groups of melamine and surface-bound AuCl4−/AuCl2− ions on bare gold nanoparticles prepared by the borohydride reduction method. This method is rather simple without further modification of gold nanoparticles and complicated pretreatment of samples. The detection limit of the method is 2.0 × 10−7 g L−1 for melamine in infant formula, which is much lower (about 1000-fold) than that of using citrate-capped GNPs as a colorimetric probe. The proposed scheme could be a good alternative means for on-site and real-time screening of melamine adulterant in infant formula without costly instruments.
研究领域:
分析化学
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食品安全检测
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2019
·
IF 5.155
Jiahao Dong,Jiexiang Tong,Jing Luo,Xiaoya Liu
In this work, a novel kind of temperature-responsive core cross-linked star (CCS) polymer, composing of poly(methoxypolyethylene glycol-co-di(ethylene glycol) ethyl ether acrylate) (P(PEGA-DEGA)) as thermo-responsive arm and poly(2-(dimethylamino)ethyl methacrylate) as functional core, was developed as nanoreactor for immobilizing gold nanoparticles for smart catalyst with facile recovery. The protonated imino groups in CCS polymer core could capture AuCl 4 - and simultaneously reduce it to Au NPs in aqueous solution, leading to the formation of P(PEGA-DEGA) CCS@Au composite. The whole procedure was carried out in aqueous media without using any toxic reducing agent, which is facile, efficient and green. The as-prepared CCS@Au composite exhibit a superior high catalytic activity for the reduction of 4-nitrophenol (4-NP), owing to that the soluble polymeric arms of the CCS polymers provides a homogeneous reaction system with fast mass transfer and thus facilitates interactions between Au NPs in the core and 4-NP. In addition, temperature-responsive catalyzing behavior was observed for the CCS@Au composite: the reaction rate enhanced with the elevation of the reaction temperature at first, but decreased when the temperature increased close to the LCSTs of the CCS@Au catalysts.
研究领域:
材料科学
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纳米技术
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催化
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高分子化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）