银基析氧催化剂的原位制备及性能研究
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- 英文论文题名：In situ preparation of Ag-based catalyst and Its oxygen-evolving catalytic perfromance
- 论文作者：李丹丹 ; 赵强 ; 刘林 ; 钟达忠 ; 李晋平
- 英文论文作者：Dandan Li ; Q Zhao ; J Li ; Department of Chemistry ; Taiyuan University of Technology
- 年：2016
- 作者机构：太原理工大学精细研究所;
- 论文关键词：银基 ; 原位 ; 析氧催化 ; 制氢
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：178k
- 原文格式：D
- 会议级别：全国
摘要
近年来基于阳极析氧催化的电解水制氢技术引起了广泛关注,安全、高效的阳极析氧催化剂是实现该技术的核心。银基析氧催化剂具有操作条件温和、析氧过电位低及结构易于调变的特性,是一种颇具发展前景的新型阳极析氧催化剂。本课题组将ITO玻片作为导电基底在含Ag~+的硼酸钾缓冲溶液(pH=9.2)中控制电压1.3V(vs.NHE)进行电解,制备了Ag-Bi析氧催化剂,丰富了非均相原位电解水新型阳极析氧催化剂系列,并用n型半导体WO_3原位修饰Ag-Bi析氧催化剂,进一步降低了其析氧过电势。其后我们又通过调变电解质体系,在CO_2饱和的NaHCO_3溶液中首次报道了具有晶型结构的Ag-Ci析氧催化剂;通过对NaHCO_3电解体系不同电解温度的调变,成功实现了对Ag-Ci析氧催化剂的晶体结构和催化组成的调变,进一步优化了其电化学性能。
Water electrolysis by anodic oxygen evolving catalysis has drawn extensive attention in hydrogen production. Safe and efficient anodic oxygen catalyst is the key to realize the water splitting technology. Ag based catalysts are novel and promising oxygen evolving catalysts, as they can work under mild conditions and have lower oxygen evolution overpotential and modulated structures. In our study, a novel silver oxides oxygen evolving catalyst(Ag-OEC) for hydrogen production by water splitting was formed in situ on an indium tin oxide anode, in a near-neutral potassium tetraborate(K_2B_4O_7) electrolyte. And a WO_3/Ag-Bi based oxygen-evolution catalyst, which show a low oxygen-evolution overpotential, has been prepared. There were other oxygen evolving catalysts emerged by guidance of this theory system, including Ag-Ci,enriched the oxygen evolving catalysts system.
Water electrolysis by anodic oxygen evolving catalysis has drawn extensive attention in hydrogen production. Safe and efficient anodic oxygen catalyst is the key to realize the water splitting technology. Ag based catalysts are novel and promising oxygen evolving catalysts, as they can work under mild conditions and have lower oxygen evolution overpotential and modulated structures. In our study, a novel silver oxides oxygen evolving catalyst(Ag-OEC) for hydrogen production by water splitting was formed in situ on an indium tin oxide anode, in a near-neutral potassium tetraborate(K_2B_4O_7) electrolyte. And a WO_3/Ag-Bi based oxygen-evolution catalyst, which show a low oxygen-evolution overpotential, has been prepared. There were other oxygen evolving catalysts emerged by guidance of this theory system, including Ag-Ci,enriched the oxygen evolving catalysts system.
引文
[1]Wang,W.;Zhao Q.;Dong J.;Li,J.Int J Hydrogen Energ.2011,36:7374.
[2]Zhao,Q.;Yu,Z.;Yuan,W.;Yuan,W.;Li,J.Int J Hydrogen Energ.2014,39:1364.
[2]Zhao,Q.;Yu,Z.;Yuan,W.;Yuan,W.;Li,J.Int J Hydrogen Energ.2014,39:1364.