Effect of rGO support on Gd@ZnO for UV-visible-light driven photocatalytic organic pollutant degradation  

作　　者：Baskaran Palanivel Md Shahadat Hossain Romulo R.Macadangdang Jr. S.Sahaya Jude Dhas Abdullah M.Al-Enizi Mohd Ubaidullah Woo Kyoung Kim Sreedevi Gedi S.Ignatius Arockiam 

机构地区：[1]Department of Physics,Kings Engineering College,Sriperumbudur,Kancheepuram,602117,Tamil Nadu,India [2]Department of Innovation Systems Engineering,Graduate School of Engineering,Utsunomiya University,Yoto 7-1-2,Utsunomiya 321-8585,Japan [3]College of Allied Health,National University,Manila,1008,Philippines [4]Department of Chemistry,College of Science,King Saud University,Riyadh,11451,Saudi Arabia [5]School of Chemical Engineering,Yeungnam University,Gyeongsan,38541,Republic of Korea [6]PG and Research Department of Chemistry,GTN Arts College,Dindigul,624005,Tamil Nadu,India

出　　处：《Journal of Rare Earths》2023年第10期1525-1531,I0002,共8页稀土学报（英文版）

基　　金：the Priority Research Centers Program through the National Research Foundation of Korea(NRF)funded by Ministry of Education(2014R1A6A1031189)。

摘　　要：In this manuscript,we report the hydrothermally prepared rGO/Gd@ZnO nanocomposite for the utilization of photocatalytic Rh B(rhodamine B)dye degradation.The required characterization techniques were carried out to analyse the structural,morphological,chemical,environmental and optical behaviour of the prepared nanoparticles.Photocatalytic efficiency of the prepared nanoparticles was studied by Rh B dye degradation upon UV-Vis-light illumination which reveals that composite catalyst degrades the dye molecule about 91%after 40 min of irradiation.On comparing the higher degradation efficiency of the rGO/Gd@ZnO nanocomposite with that of ZnO and Gd doped ZnO,it reveals a greater reduction of charge carriers'recombination,higher visible-light utilization and higher adsorption efficiency.Elemental trapping experiment and recycling test were conducted to study the influence of active radicals for the degradation reaction and to know the stability of the prepared nanocomposite,respectively.Hence,this rGO supported Gd doped ZnO nanocomposite can provide a new path way in preparing a highly efficient photocatalyst for organic pollutant degradation at large.

关 键 词：rGO Gd doped ZnO UV-Vis photocatalyst Dye degradation Rare earths 

分 类 号：X505[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]