Surface engineering induced superstructure Ta2O5-x mesocrystals for enhanced visible light photocatalytic antibiotic degradation.
Surface engineering induced superstructure Ta2O5-x mesocrystals for enhanced visible light photocatalytic antibiotic degradation.
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DOI：
10.1016/j.jcis.2021.03.118
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发表时间：
2021-03
影响因子：
9.9
通讯作者：
Yanting Tang;Jielin Huang;Shuaifei Liu;Dandan Xiang;Xinqi Ma;Xin Yu;Mingxue Li;Quanhui Guo
中科院分区：
文献类型：
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作者：
Yanting Tang;Jielin Huang;Shuaifei Liu;Dandan Xiang;Xinqi Ma;Xin Yu;Mingxue Li;Quanhui Guo
介晶材料是一类在制备快速电荷传输通道方面具有重要应用价值的多功能材料，而表面工程则是提高介晶材料光催化性能的重要因素。在这项工作中，表面工程Ta2O5− x介晶合成通过简易的碱处理策略增强可见光催化降解四环素。与商用Ta2O5和原始Ta2O5− x介晶相比，其比表面积和表面羟基的增加，为捕获光生空穴提供了更多的表面活性中心和高电子密度中心，从而提高了光催化活性.此外，还提出了四环素在表面修饰Ta2O5− x介晶上的可能转化途径和可见光催化机理。目前的工作也提供了一个简单的策略，调节超宽带隙半导体的表面性质，以提高可见光催化性能。
Mesocrystals are types of fascinating multifunctional materials in fabricating rapid charge transport pathways, and surface engineering could be considered as a significant influencing factor in boosting charge separation for efficient photocatalytic application. In this work, surface engineered Ta2O5−xmesocrystals were synthesized by facile alkali treatment strategy for enhanced visible light photocatalytic tetracycline degradation. The highly enhanced photocatalytic activity could be attributed to the highly increased surface areas and surface hydroxyl groups to compare with those of commercial Ta2O5and pristine Ta2O5−xmesocrystals, which could provide more surface reactive sites and high electron density center for trapping photo-generated holes. Besides, possible tetracycline transformation pathways over surface engineered Ta2O5−xmesocrystals and visible light photocatalytic mechanism were also proposed in this work. Current work also provides a facile strategy for regulating surface property of ultrawide bandgaps semiconductors for enhanced visible light photocatalytic performance.