核壳结构阵列光电阳极材料的设计制备与性能研究
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- 英文论文题名：Core-shell nanoarrays as photoanodes for efficient water splitting
- 论文作者：邵明飞 ; 宁凡雨 ; 张瑞康 ; 卫敏
- 英文论文作者：Mingfei Shao ; Fanyu Ning ; Ruikang Zhang ; Min Wei ; State Key Laboratory of Chemical Resource Engineering ; Beijing University of Chemical Technology
- 年：2016
- 作者机构：北京化工大学化工资源有效利用国家重点实验室;
- 论文关键词：核壳结构 ; 光电化学分解水 ; 光电阳极
- 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-第四十二分会：能源纳米材料物理化学
- 语种：中文
- 分类号：TQ116.2
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十二分会 ; 能源纳米材料物理化学
- 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：250k
- 原文格式：D
- 会议级别：全国
摘要
光电化学(photoelectrochemical,PEC)制氢技术是指直接利用太阳能作为能量源来驱动,结合电化学氧化还原反应过程催化目标反应物分解制备氢气的过程,它已成为当前洁净能源生产开发和环境污染治理的重要手段。其中,为了克服光电阳极/阴极材料的固有缺陷,实现光电化学分解水制氢效率的不断提高与功能强化,借助新型的纳米技术和材料可控制备方法对光电阳极/阴极材料的组成与微纳结构进行精细调控具有重要的意义。除了对电极材料的结构进行调变,探索新型的光电阳极材料对于该领域的发展也至关重要。但是单一的半导体材料很难同时实现大的光谱响应范围、有效的电子-空穴分离以及快速的表面水分解反应速率。因此,我们制备了具有合适组成以及精细结构设计的核壳型复合光电阳极材料,通过改善电极材料的光电化学反应过程,实现了光电阳极材料PEC分解水性能的提高。
With the increasing exploration and development of renewable and clean power sources, photoelectrochemical(PEC) water splitting into hydrogen and oxygen using solar energy have attracted considerable attention. Semiconductor photocatalysts, in particular transition-metal oxide such as ZnO, TiO_2, and α-Fe_2O_3 have been extensively studied as photoanode materials for PEC water splitting with low cost and environmental-friendliness. However, these photoelectrode normally suffer from less efficiency in light capture, poor charge carrier mobility and large kinetic barriers for surface water oxidation. Herein, core-shell composite photoanodes with appropriate composition and well-designed nanostructure have been fabricated. With significant improvement in light absorption, charge separation, and surface water oxidation, these core-shell photoanodes exhibit largely enhanced PEC performance.
With the increasing exploration and development of renewable and clean power sources, photoelectrochemical(PEC) water splitting into hydrogen and oxygen using solar energy have attracted considerable attention. Semiconductor photocatalysts, in particular transition-metal oxide such as ZnO, TiO_2, and α-Fe_2O_3 have been extensively studied as photoanode materials for PEC water splitting with low cost and environmental-friendliness. However, these photoelectrode normally suffer from less efficiency in light capture, poor charge carrier mobility and large kinetic barriers for surface water oxidation. Herein, core-shell composite photoanodes with appropriate composition and well-designed nanostructure have been fabricated. With significant improvement in light absorption, charge separation, and surface water oxidation, these core-shell photoanodes exhibit largely enhanced PEC performance.
引文
[1]Shao,M.;Ning,F.;Wei,M.*;Evans,D.;Duan,X.;Adv.Funct.Mater.2014,24:580.
[2]Zhang,C.;Shao,M.*;Ning,F.;Xu,S.;Li,Z.;Wei,M.*;Evans,D.;Duan,X.;Nano Energy 2015,12:231.
[2]Zhang,C.;Shao,M.*;Ning,F.;Xu,S.;Li,Z.;Wei,M.*;Evans,D.;Duan,X.;Nano Energy 2015,12:231.