Dong Wenjing, Xie Tianyi, Wu Zhilun, Peng Haiyi, Ren Haishen, Meng Fancheng, Lin Huixing
Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai 201800 China.
Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 China
RSC Adv. 2021 Dec 3;11(61):38894-38906. doi: 10.1039/d1ra06961f. eCollection 2021 Nov 29.
Bismuth oxychloride (BiOCl) is a promising photocatalyst material for water purification to remove organic pollutants. However, BiOCl materials can only degrade pollutants under ultraviolet-light owing to their wide band gap. Herein, we propose a simple synthesis route based on BiO-BO-ZnO-SrO-NaO (BBZSN) glass to fabricate 3D hierarchical-structured BiOCl materials with rich oxygen vacancies (OVs), which were introduced from BBZSN glass and inhibited the recombination of electron-hole pairs and adjusted the band structure. The photocatalytic activity of the obtained 3D hierarchical-structured BiOCl photocatalyst was evaluated by the degradation of Rhodamine B (RhB) under ultraviolet light and visible light. The experimental results suggested that the as-fabricated flower-shape BiOCl-NaCl could effectively degrade RhB under ultraviolet light (92.7%/20 min) or visible light (71.4%/20 min, 92.8%/100 min) respectively, which indicates its potential to be applied in environmental remediation.
氯氧化铋（BiOCl）是一种用于水净化以去除有机污染物的很有前景的光催化剂材料。然而，由于其宽带隙，BiOCl材料只能在紫外光下降解污染物。在此，我们提出了一种基于BiO-BO-ZnO-SrO-NaO（BBZSN）玻璃的简单合成路线，以制备具有丰富氧空位（OVs）的三维分级结构BiOCl材料，这些氧空位由BBZSN玻璃引入，抑制了电子-空穴对的复合并调整了能带结构。通过在紫外光和可见光下降解罗丹明B（RhB）来评估所得三维分级结构BiOCl光催化剂的光催化活性。实验结果表明，所制备的花状BiOCl-NaCl分别在紫外光（92.7%/20分钟）或可见光（71.4%/20分钟，92.8%/100分钟）下能有效降解RhB，这表明其在环境修复中的应用潜力。
