Abstract
The utilization of piezo-photocatalytic technol-ogy for environmental remediation under full spectrum solar light is promising but still challenging.Herein,one-dimensional Bi2S3 nanowires,which can utilize both mechanical energy and near-infrared(NIR)light to remove hexavalent chromium(Cr(Ⅵ))efficiently,were synthe-sized by a restrained growth method.The reaction rate constants of Cr(Ⅵ)reduction in piezo-photocatalytic process under NIR(800-2500 nm)reached 0.334 min-1,which were 3.2 and 12.4 times as that of single piezo and photocatalytic process.The formation of polarized electric fields and one-dimensional structure allow ultrafast sepa-ration of charge carriers,thereby promoting the catalytic activity.Furthermore,due to the strong penetrability of NIR light,the piezo-photocatalysis performance in turbid solutions under NIR light(0.188 min-1)was even com-parable to that under visible light(0.186 min-1).This study provides a new concept on the development of piezo-photocatalytic technology for environmental remediation by utilization of NIR light and natural mechanical energy.
基金项目
Natural Science Foundation of China(51979081)
Natural Science Foundation of China(52100179)
Fundamental Research Funds for the Central Universities(B210202052)
China Postdoctoral Science Foundation(2020M680063)
China Postdoctoral Science Foundation(2021T140176)
PAPD Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)()
NETL
NSTL
万方数据