Construction of piezoelectric BaTiO_(3)/MoS_(2) heterojunction for boosting piezo-activation of peroxymonosulfate  

作　　者：Yanxi Chen Shenyu Lan Mingshan Zhu 

机构地区：[1]Guangdong Key Laboratory of Environmental Pollution and Health,School of Environment,Jinan University,Guangzhou 511443,China

出　　处：《Chinese Chemical Letters》2021年第6期2052-2056,共5页中国化学快报（英文版）

基　　金：supported by Guangdong Basic and Applied Basic Research Foundation,China(No.2020B1515020038);the Pearl River Talent Recruitment Program of Guangdong Province(No.2019QN01L148),China。

摘　　要：The rapid recombination of charge carriers in piezoelectric materials has always been the problem that limits their piezoelectric performance for removal of organic pollutants in water.Herein,we construct a piezoelectric Ba TiO_(3)/MoS_(2)(BTO/MS)that follows a type II heterojunction charge transfer system to inhibit the recombination of electron-hole(e^(-)-h^(+))pairs,which is beneficial to the activation of peroxymonosulfate(PMS)for the removal of antibiotic ornidazole(ORZ)pollutants.The optimal ratio of BTO/MS for ORZ degradation under the piezo/PMS process is 13.9,3.6,62.1 and 2.0 times higher than that of the BTO/piezo,MS/piezo,(BTO/MS)/PMS and(BTO/MS)/piezo processes,respectively.The high efficiency charge separation in the piezoelectric heterojunction of BTO/MS promotes the activation of PMS,resulting in the synergy of pizeocatalysis and PMS oxidation during the process of ORZ degradation.This study provides an idea for enhancing piezo-activation of PMS by constructing heterojunctions in piezoelectric materials.

关 键 词：PIEZOELECTRICITY PEROXYMONOSULFATE BaTiO_(3)/MoS_(2)Heterojunction Ornidazole degradation 

分 类 号：TB34[一般工业技术—材料科学与工程]