多金属氧酸盐
氧气
激进的
光催化
分子
催化作用
磺基水杨酸
降级(电信)
空位缺陷
电子转移
化学
材料科学
光化学
无机化学
计算机科学
结晶学
有机化学
电信
作者
Xiaoqiang An,Qingwen Tang,Huachun Lan,Huijuan Liu,Jiuhui Qu
标识
DOI:10.1016/j.apcatb.2018.11.063
摘要
Oxygen vacancy modulation has emerged as a prevalent strategy to improve the performance of heterogeneous catalysts. By far, the impact of oxygen vacancy rearrangement on the efficiency of Fenton-like reaction remains largely unknown. In this paper, Fe-containing polyoxometalates were coupled with defect-rearranged TiO2 to construct defective Fenton-like photocatalysts. Experimental characterizations revealed that defect rearrangement facilitated the interfacial transfer of electrons from TiO2 to polyoxometalate molecules. Fenton-like photocatalysts with rearranged defects exhibited 5 and 3.5 times higher activity for the synergetic degradation of toxic dye and 5-Sulfosalicylic acid than pristine TiO2. This enhancement was ascribed to the beneficial role of oxygen vacancy modulation for activating oxygen and H2O2 molecules into O2− and OH radicals. Our work provides new opportunities for exploring efficient Fenton-like photocatalysts for environmental remediation.
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