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Efficient piezo-assisted near-infrared-light-driven Cr(Ⅵ)reduction over Bi_(2)S_(3) nanowires transformed from ultrathin Bi_(2)WO_(6) nanosheets

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摘要 The utilization of piezo-photocatalytic technol ogy for environmental remediation under full spectrum solar light is promising but still challenging.Herein,one dimensional Bi_(2)S_(3)nanowires,which can utilize both mechanical energy and near-infrared(NIR)light to remov hexavalent chromium(Cr(Ⅵ))efficiently,were synthe sized by a restrained growth method.The reaction rat constants of Cr(Ⅵ)reduction in piezo-photocatalyti 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 electri fields and one-dimensional structure allow ultrafast sepa ration of charge carriers,thereby promoting the catalyti activity.Furthermore,due to the strong penetrability o 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)).Thi study provides a new concept on the development of piezo photocatalytic technology for environmental remediation by utilization of NIR light and natural mechanical energy.
出处 《Rare Metals》 SCIE EI CAS CSCD 2024年第9期4333-4343,共11页 稀有金属(英文版)
基金 supported by the Natural Science Foundation of China(Nos.51979081 and 52100179) the Fundamental Research Funds for the Central Universities(No.B210202052) China Postdoctoral Science Foundation(Nos.2020M680063 and 2021T140176)。
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