花状结构硫化镉纳米材料:液相制备与光催化性能
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- 英文论文题名：Flower-like CdS nanomaterials:Synthesis of a Solution-phase Approach and Property of Photocatalysis
- 论文作者：王伟智 ; 卢雅静 ; 徐雅飞 ; 刘倩 ; 汪欣欣
- 英文论文作者：Weizhi Wang ; Yajing Lu ; Yafei Xu ; Qian Liu ; Xinxin Wang ; Chemistry and Materials Science ; the Key Laboratory of Functional Molecular Solids ; the Ministry of Education ; Anhui Normal University
- 年：2016
- 作者机构：安徽师范大学化学与材料科学学院分子基固体教育部重点实验室;
- 论文关键词：硫化镉 ; 液相制备 ; 可见光 ; 光催化剂
- 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：TB383.1;O643.36
- 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：234k
- 原文格式：D
- 会议级别：全国
摘要
作为一种重要的Ⅱ-Ⅵ族化合物,硫化镉(CdS)较窄的带隙使其对太阳光具有良好的响应,是一种理想的可见光响应的半导体材料,在可见光催化领域得到了广泛的应用研究。我们通过一种简单的液相反应路线制备出尺寸均匀、分散性良好的花状结构CdS纳米材料。花状结构的形成不需要添加任何辅助试剂以及模板作为辅助。所制备的花状结构由高结晶度的CdS纳米晶粒组成,且CdS纳米晶粒间存在缝隙,使得产物内部有大量空隙存在。鉴于大部分的催化反应发生在催化剂的表面,内部空隙的存在使得花状结构CdS纳米材料的表面积增加,有助于提高材料的光催化活性。我们所制备的内部有空隙的花状结构CdS纳米材料,在可见光辐照下,表现出稳定的瞬态光电流响应和对多种有机染料良好的光催化降解性能。
As an important Ⅱ-Ⅵ compound, cadmium sulfide(CdS) is an ideal semiconductor with visible light response because of its narrow and direct band gap, which corresponds well to the solar spectrum. The uniform and dispersive flower-like CdS naonmaterials were fabricated using a facile solution-phase approach without any templates or additives. The as‐prepared flower‐like CdS is composed of small CdS nanocrystals with high crystalline quality. There are gaps between the small CdS nanocrystals, resulting in the presence of interstices inside the products. In view of most catalytic reactions occur on the catalyst surface, the presence of inner interstices is conducive to improving the photocatalytic activity of the products due to the increase in surface area. The as-prepared flower-like CdS possess stable transient photocurrent response and good photocatalytic activity for the degradation of various organic dyes under visible light irradiation.
As an important Ⅱ-Ⅵ compound, cadmium sulfide(CdS) is an ideal semiconductor with visible light response because of its narrow and direct band gap, which corresponds well to the solar spectrum. The uniform and dispersive flower-like CdS naonmaterials were fabricated using a facile solution-phase approach without any templates or additives. The as‐prepared flower‐like CdS is composed of small CdS nanocrystals with high crystalline quality. There are gaps between the small CdS nanocrystals, resulting in the presence of interstices inside the products. In view of most catalytic reactions occur on the catalyst surface, the presence of inner interstices is conducive to improving the photocatalytic activity of the products due to the increase in surface area. The as-prepared flower-like CdS possess stable transient photocurrent response and good photocatalytic activity for the degradation of various organic dyes under visible light irradiation.
引文
[1]Wintterlin,J.;Volkening,S.;Janssens,T.V.W.;Zambelli T.;Ertl,G.Science,1997,278:1931.
[2]Xiong,S.L.;Xi,B.J.;Wang,C.M.;Zou,G.F.;Fei,L.F.;Wang W.Z.;Qian,Y.T.Chem.-Eur.J.,2007,13:3076.
[2]Xiong,S.L.;Xi,B.J.;Wang,C.M.;Zou,G.F.;Fei,L.F.;Wang W.Z.;Qian,Y.T.Chem.-Eur.J.,2007,13:3076.
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