高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (7): 1367-1371.doi: 10.7503/cjcu20150051

• 物理化学 • 上一篇    下一篇

Ag2O/TiO2纳米线异质结的制备及可见光催化性能

王威1(), 何皎洁1, 崔福义1(), 王策2   

  1. 1. 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090
    2. 吉林大学化学学院, 麦克德尔米德实验室, 长春 130012
  • 收稿日期:2015-01-16 出版日期:2015-07-10 发布日期:2015-06-17
  • 作者简介:联系人简介: 王 威, 男, 博士, 副教授, 主要从事水处理化学与材料技术研究. E-mail:wangweirs@hit.edu.cn;崔福义, 男, 博士, 教授, 主要从事水修复与水质保障研究. E-mail:cuifuyi@hit.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21304024)、 城市水资源与水环境国家重点实验室开放基金(批准号: 2013DX03, 2013TS06)、 国家博士后科学基金(批准号: 2014T70324, LBH—Z12090)和中央高校基础科研业务费(批准号: 5710006113, HIT;BRETIII.201417)资助

Preparation of Ag2O/TiO2 Nanowires Heterojunction and Their Photocatalytic Activity Under Visible-light Irradiation

WANG Wei1,*(), HE Jiaojie1, CUI Fuyi1,*(), WANG Ce2   

  1. 1. State Key Laboratory of Urban Water Resources and Environments(SKLUWRE),Harbin Institute of Technology, Harbin 150090, China
    2. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2015-01-16 Online:2015-07-10 Published:2015-06-17
  • Contact: WANG Wei,CUI Fuyi E-mail:wangweirs@hit.edu.cn;cuifuyi@hit.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21304024), the Open Fund of the State Key Laboratory of Urban Water Resource and Environment, China(Nos.2013DX03, 2013TS06), the Postdoctoral Science Fundation of China(Nos.2014T70324, LBH—Z12090) and the Fundamental Research Funds for the Central Universities, China(No.5710006113, HIT,BRETIII.201417)

摘要:

采用化学沉积法制得了氧化银/二氧化钛纳米线异质结(Ag2O/TNWs)可见光催化剂. 应用扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 X射线衍射(XRD)和X射线光电子能谱(XPS)等手段对催化剂进行表征, 并以甲基橙降解为模型反应研究了其光催化性能. 结果表明, 与负载等量氧化银的二氧化钛纳米粒子(Ag2O/P25)催化剂相比, Ag2O/TNWs纳米线异质结具有优异的一维增强可见光催化性能.

关键词: 二氧化钛, 可见光催化, 氧化银, 异质结

Abstract:

In order to improve the activity of TiO2 based photocatalysts, Ag2O/TiO2 nanowire(Ag2O/TNWs) heterojunctions were prepared via a facile precipitation method. Scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS) and the decolorization experiment of methyl orange(MO) in aqueous solution were employed to characterize the as-prepared samples. Compared to the particle-structured catalyst of Ag2O/P25 with the same loading ratio(mass ratio 1∶1), the Ag2O/TNWs heterojunction exhibited greatly enhanced photocatalytic activities under visible light irradiation, indicating the advantage of the one-dimensional structure of TNWs.

Key words: Titanium dioxide(TiO2), Visible-light photocatalysis, Silver oxide, Heterojunction

中图分类号: