| 弯曲纳米银线的合成、表征、机理及催化活性研究 |
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| 引用本文： | 孟宪伟,杨宏伟,原禧敏,李郁秀,李耀,陈力,陈家林.弯曲纳米银线的合成、表征、机理及催化活性研究[J].贵金属,2019,40(3):60-65. |
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| 作者姓名： | 孟宪伟 杨宏伟 原禧敏 李郁秀 李耀 陈力 陈家林 |
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| 作者单位： | 昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,昆明650106;四川工程职业技术学院,四川德阳618000;昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,昆明,650106 |
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| 基金项目： | 国家自然科学基金(21761016)、云南省中青年学术与技术带头人后备人才项目(2017HB060)、云南省应用基础研究(2017FB142) 云南省重点新产品开发专项(2016BA007)、云南省重大研发专项(2018ZE001)、云南省院所开发专项(2016DC033) |
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| 摘 要： | 在未额外添加表面活性剂或聚合物的室温条件下,于水相中合成了弯曲纳米银线，采用SEM、XRD和UV-Vis等手段对产物进行表征。表征结果表明，弯曲银纳米线的直径在95~175 nm 之间；机理探讨认为，弯曲纳米银线可能的生成机理包含2个关键步骤，即首先形成不规则的片状银，然后再通过溴离子的刻蚀作用最终形成弯曲的纳米银线；活性试验表明，该纳米银线在对硝基苯酚(4-硝基苯酚)的加氢还原反应中呈现出高的催化活性。
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| 关 键 词： | 银纳米线 对硝基苯酚 水相合成 加氢还原 |
| 收稿时间： | 2019/4/12 0:00:00 |
Synthesis, Characterization, Mechanism and Catalytic Activity of Curly Silver Nanowires |
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| MENG Xianwei,YANG Hongwei,YUAN Ximin,LI Yuxiu,LI Yao,CHEN Li and CHEN Jialin.Synthesis, Characterization, Mechanism and Catalytic Activity of Curly Silver Nanowires[J].Precious Metals,2019,40(3):60-65. |
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| Authors: | MENG Xianwei YANG Hongwei YUAN Ximin LI Yuxiu LI Yao CHEN Li and CHEN Jialin |
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| Affiliation: | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China;Sichuan Engineering Technical College, Deyang 618000, Sichuan, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China and State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China |
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| Abstract: | An aqueous synthesis of curly silver nanowires (AgNWs) at room temperature without any surfactants or polymers was reported for the first time. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and ultraviolet-visible (UV-Vis) spectroscopy were characterized the bending and twisting AgNWs. The results showed that the diameter of the curly silver nanowire was between 95 and 175 nm. The possible growth mechanism of the curly AgNWs contained two key steps: First, silver flakes with irregular shape were formed first and then silver flakes were etched into curly AgNWs with the addition of bromide ions. Moreover, activity test indicated that the products exhibited high catalytic activity in the reduction of p-nitrophenol (4-nitrophenol, 4-NP). |
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| Keywords: | silver nanowires p-nitrophenol aqueous synthesis hydrogenation reduction |
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