Visible-light-driven removal of atrazine by durable hollow core-shell TiO2@LaFeO3 heterojunction coupling with peroxymonosulfate via enhanced electron-transfer
Visible-light-driven removal of atrazine by durable hollow core-shell TiO2@LaFeO3 heterojunction coupling with peroxymonosulfate via enhanced electron-transfer
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耐用的空心核壳TiO2@LaFeO3异质结通过增强电子转移与过一硫酸盐耦合可见光驱动去除莠去津
DOI:
10.1016/j.apcatb.2021.120889
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发表时间:
2021-11
期刊:
影响因子:
--
通讯作者:
Bo Lai
中科院分区:
文献类型:
--
作者:
Kexin Wei;Andac Armutlulu;Yinxu Wang;Gang Yao;Ruzhen Xie;Bo Lai
Insufficient charge-carriers separation and deteriorated recycling are still bottlenecks limiting practical photocatalytic water purification. Herein, we developed a durable hollow core-shell TiO2@LaFeO3(TLFO) nanosphere via facile carbon-sphere-templated method and sol-gel process, and applied it as heterojunction photocatalyst coupled with peroxymonosulfate (PMS) for efficient atrazine (ATZ) removal via enhanced electron-transfer. The built-in electric field originated from the three-dimensional heterojunction between TiO2and LaFeO3, acting as charge transfer driving force, enhanced the charge separation rate. Meanwhile, PMS could function as electron acceptor to boost photogenerated charge separation and maximize reactive oxidant species (e.g.,•OH, SO4•−, O2•−and1O2) production. Therefore, the fabricated TLFO heterojunction exhibited outstanding reusability, and superior ATZ removal efficiency without detectable metal ion leaching. This work successfully demonstrates the synergistic effect and superior hollow structure of TLFO heterojunction with promoted light utilization and PMS activation, which offers potential application for efficient abating environmental pollution using solar energy.
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