Photoelectrocatalytic activity of immobilized Yb doped WO3 photocatalyst for degradation of methyl orange dye

作     者：S.V.Mohite V.V.Ganbavle K.Y.Rajpure 

作者机构：Electrochemical Materials LaboratoryDepartment of PhysicsShivaji UniversityKolhapur 416004India Department of PhysicsDattajirao Kadam ArtsScience and Commerce CollegeIchalkaranji 416115India 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2017年第26卷第3期

页      面：440-447页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：University Grants Commission(UGC) New Delhi for the financial support through the project No.‘‘41-869/2012(SR)’’ 

主　　题：Degradation Photocatalytic activity Methyl orange dye Thin film Yb doped WO3 Spray pyrolysis technique 

摘      要：Pure WOand Yb:WOthin films have been synthesized by spray pyrolysis technique. Effect of Yb doping concentration on photoelectrochemical, structural, morphological and optical properties of thin films are studied. X-ray diffraction analysis shows that all thin films are polycrystalline nature and exhibit monoclinic crystal structure. The 3 at% Yb:WOfilm shows superior photoelectrochemical（PEC） performance than that of pure WOfilm and it shows maximum photocurrent density（Iph= 1090 μA/cm） having onset potentials around +0.3 V/SCE in 0.01 M HClO. The photoelectrocatalytic process is more effective than that of the photocatalytic process for degradation of methyl orange（MO） dye. Yb doping in WOphotocatalyst is greatly effective to degrade MO dye. The enhancement in photoelectrocatalytic activity is mainly due to the suppressing the recombination rate of photogenerated electron-hole pairs. The mineralization of MO dye in aqueous solution is studied by measuring chemical oxygen demand（COD） values.