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Ag2O/TiO2纳米线异质结的制备及可见光催化性能
引用本文:王威,何皎洁,崔福义,王策. Ag2O/TiO2纳米线异质结的制备及可见光催化性能[J]. 高等学校化学学报, 2015, 36(7): 1367. DOI: 10.7503/cjcu20150051
作者姓名:王威  何皎洁  崔福义  王策
作者单位: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 1500902. 吉林大学化学学院, 麦克德尔米德实验室, 长春 130012
基金项目: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
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  
收稿时间:2015-01-16

Preparation of Ag2O/TiO2 Nanowires Heterojunction and Their Photocatalytic Activity Under Visible-light Irradiation†
WANG Wei,HE Jiaojie,CUI Fuyi,WANG Ce. Preparation of Ag2O/TiO2 Nanowires Heterojunction and Their Photocatalytic Activity Under Visible-light Irradiation†[J]. Chemical Research In Chinese Universities, 2015, 36(7): 1367. DOI: 10.7503/cjcu20150051
Authors:WANG Wei  HE Jiaojie  CUI Fuyi  WANG Ce
Affiliation:1. State Key Laboratory of Urban Water Resources and Environments(SKLUWRE),Harbin Institute of Technology, Harbin 150090, China2. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, China
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.
Keywords:Titanium dioxide( TiO2 )  Visible-light photocatalysis  Silver oxide  Heterojunction
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