Hierarchical C-doped BiPO4/ZnCoAl-LDO hybrid with enhanced photocatalytic activity for organic pollutants degradation

Hierarchical C-doped BiPO4/ZnCoAl-LDO hybrid with enhanced photocatalytic activity for organic pollutants degradation
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分级C掺杂BiPO4/ZnCoAl-LDO杂化物具有增强的光催化活性,可降解有机污染物

DOI:
10.1016/j.clay.2018.06.012
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发表时间:
2018-09
影响因子:
5.6
通讯作者:
Song Peng
Song Peng
中科院分区:
地球科学2区
文献类型:
--
作者:
Ji Fei;Li Jia;Cui Xinling;Liu Jun;Bing Xingmei;Song Peng

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本文首次报道了以松花粉为模板,通过简单的生物质路线合成了新型C掺杂BiPO4/ZnCoAl-LDO杂化材料。在模拟太阳光照射下,所制备的样品对亚甲基蓝具有良好的吸附和光降解性能。研究发现,掺碳层状混合金属氧化物(C-掺杂LDO)与BiPO4形成异质结可以有效地降低电子和空穴的复合速率,从而通过扩大太阳光的响应范围来提高光催化活性。根据紫外-可见漫反射光谱和活性物种测试,提出了C掺杂BiPO4/LDO光降解亚甲基蓝的可能电荷转移机理。这项工作为利用吸附-光催化协同作用去除废水中有机污染物提供了新的视角。
We report here the synthesis of novel C-doped BiPO4/ZnCoAl-LDO hybrid for the first time via a facile biomass route that involved using pine pollen as template. The as-prepared samples exhibited excellent adsorption and photo-degradation performances toward methylene blue under simulated sunlight irradiation. It was found that the formation of heterojunction between BiPO4and C-doped layered mixed metal oxide (C-doped LDO) ZnCo2O4could effectively reduce the recombination rate of electrons and holes, and thus improve the photocatalytic activity via enlarging the response range of sunlight. The possible charge transfer mechanism for photo-degradation of methylene blue by C-doped BiPO4/LDO was proposed based on the UV–vis diffuse reflectance spectra and active species test. This work provides a new insight into removal of organic pollutant from wastewater by a novel ZnCoAl-LDO based hybrid via adsorption-photocatalysis synergetic effect.
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