BiOIO 纳米板的固相合成及其对有机污染物的光催化降解能力增强。
The Solid-State Synthesis of BiOIO Nanoplates with Boosted Photocatalytic Degradation Ability for Organic Contaminants.
机构信息
State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China.
出版信息
Molecules. 2023 Apr 24;28(9):3681. doi: 10.3390/molecules28093681.
BiOIO exhibits excellent oxidation capacity in the photocatalytic degradation of contaminants thanks to its unique polarized electric and internal electrostatic field. However, the synthetic method of BiOIO nanomaterials is mainly focused on hydrothermal technology, owing to its high energy consumption and time-consuming nature. In this work, a BiOIO nanosheet was prepared by a simple solid-state chemical reaction, which was identified by XRD, EDS, XPS, and HRTEM. Benefiting from the strong oxidation ability of the valence band maximum, the distinctive layer structure, and the promoted generation of ·O, the BiOIO nanosheet exhibits excellent photo-degradation activity for methyl orange (MO) and its apparent rate constant is 0.2179 min, which is about 3.02, 8.60, and 10.26 times higher than that of P25, BiOCl, and BiOCO, respectively. Interestingly, the BiOIO nanosheet also has good photocatalytic degradation performance for phenolic compounds; in particular, the degradation rate of BPA can reach 96.5% after 16 min, mainly due to hydroxylation reaction.
BiOIO 由于其独特的极化电场和内部静电场，在光催化降解污染物方面表现出优异的氧化能力。然而，BiOIO 纳米材料的合成方法主要集中在水热技术上，因为它的能耗高且耗时。在这项工作中，通过简单的固态化学反应制备了 BiOIO 纳米片，通过 XRD、EDS、XPS 和 HRTEM 进行了鉴定。得益于价带最大值的强氧化能力、独特的层状结构和促进的·O 生成，BiOIO 纳米片对甲基橙（MO）表现出优异的光降解活性，其表观速率常数为 0.2179 min，分别是 P25、BiOCl 和 BiOCO 的 3.02、8.60 和 10.26 倍。有趣的是，BiOIO 纳米片对酚类化合物也具有良好的光催化降解性能；特别是，BPA 在 16 分钟后降解率可达 96.5%，主要归因于羟化反应。
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