%0 Journal Article
%T Preparation and Photoelectrochemical Performance of Potassium Hexatitanate Nanofilm
%A QIAN Qing-hua
%A LIU Chang
%A HU Yu-yan
%A YANG Zhu-hong
%A FENG Xin
%A LU Xiao-hua
%A <br>钱清华
%A 刘畅
%A 胡煜艳
%A 杨祝红
%A 冯新
%A 陆小华
%J 过程工程学报
%D 2007
%I 
%X Nanostructured K2Ti6O13 film photoelectrode produced in situ was prepared on indium-tin oxide (ITO) glass substrate by a sol-gel process and characterized by thermogravimetry (TG) and differential scanning calorimetry (DSC),X-ray diffraction (XRD),atomic force microscopy (AFM),UV-Visible diffuse reflectance and Raman spectrometry.The photoelectrochemical performance of K2Ti6O13 film was assessed by electrochemical method.The analytical results showed that the K2Ti6O13 film had a strong and wide absorption in the ultraviolet and visible light range.The band gap energy (Eg) of the film shifted from 3.45 eV (bulk) to 3.05 eV (film).The flat-band potential (Efb) of K2Ti6O13 film was-0.67 V vs.saturated calomel electrode (SCE)].The transport of photogenerated electrons and holes was better in K2Ti6O13 film electrode than that in TiO2 film electrode.The photoelectrochemical response of K2Ti6O13 photoelectrode was increased in electrolyte solution with KOH,compared with that in the solution without KOH.The adsorption of OH- on the nanofilm acted as the surface activity center.The mechanism of photolysis was analyzed in terms of photoelectrochemical behavior.
%K potassium hexatitanate film
%K sol-gel process
%K atomic force microscopy
%K photoelectrochemical performance
%K Nanofilm
%K Potassium Hexatitanate
%K Performance
%K mechanism
%K photolysis
%K behavior
%K adsorption
%K nanofilm
%K surface activity
%K center
%K response
%K increased
%K electrolyte
%K solution
%K transport
%K better
%K film electrode
%K potential
%K bulk
%K band gap<br>纳米薄膜
%K 六元钛酸钾
%K 溶胶-凝胶法
%K 原子力显微镜
%K 光电化学性能
%K 制备
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=B68C52E21BA08817&yid=A732AF04DDA03BB3&vid=DF92D298D3FF1E6E&iid=94C357A881DFC066&sid=92CE31955C2FC520&eid=5CC11A326E54A79A&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=19