ZnO-chitosan/Rectorite Nanocomposite Exhibiting High Photocatalytic Activities under Visible-light Irradiation  

作　　者：LI Shiqian Pen-Chi Chiang DING Ling Kinjal JShah CHEN Qinghua CHEN Sheng 

机构地区：[1]College of Ocean and Bio-chemical Engineering,Fujian provincial Key Lab of Coastal Basin Environment,Fuqing Branch of Fujian Normal University,Fuqing 350300,China [2]Graduate Institute of Environmental Engineering,National Taiwan University,Taipei City 10673,Taiwan,China [3]College of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,China [4]College of Urban Construction,Nanjing Tech University,Nanjing 211800,China [5]Engineering Research Center of Polymer Green Recycling,Ministry of Education(Fujian Normal University),Fuzhou 350007,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2020年第2期310-319,共10页武汉理工大学学报（材料科学英文版）

基　　金：the National Key Research and Development Project(2019YFC1908204);the Fund of Key Laboratory of Measurement and Control System for Offshore Environment(Fuqing Branch of Fujian Normal University)(No.SI-KF1604);the Key Project of Science and Technology Department of Fujian Province(No.2018H0013);the Key Natural Fund Project of Universities in Fujian Province(No.JZ160490);the Fuqing Branch of Fujian Normal University Cultivation Project(Nos.KY2017NS06,KY201609)。

摘　　要：Chitosan(CS),hydrated zinc acetate,and rectorite(REC) were used as raw materials to prepare CS-embedded zinc oxide(ZnO) nanoparticle by a chemical precipitation process.Hydrogen-bonded REC-loaded ZnO-CS nanoparticle was to form ZnO-CS/REC nanocomposite photocatalyst,its morphology and structure were analyzed by means of FTIR,XRD,TGA,SEM,and TEM.The effects of the catalyst dosage,methyl orange(MO) initial concentration and solution pH on photocatalytic performance were also discussed.The experimental results show that the ZnO-CS/REC nanocomposite has a particle size of 100 nm with good dispersion and uniformity.Under irradiation of visible light,0.6 g/L photocatalyst was used to degrade MO in solution for 90 min at pH 6,then the MO solution(10 mg/L) was decolored by more than 99%,indicating that the ZnO-CS/REC nanocomposite exhibited highly photocatalytic degradation activity.Therefore,the photodegradation kinetic mechanism of MO in aqueous solution is presumed.

关 键 词：ZnO-Chitosan/rectorite NANOCOMPOSITE VISIBLE-LIGHT methyl orange PHOTODEGRADATION 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X703[环境科学与工程—环境工程]