高结晶度的BiOCl纳米片作为诺氟沙星抗生素降解的高效光催化剂。

High-Crystallinity BiOCl Nanosheets as Efficient Photocatalysts for Norfloxacin Antibiotic Degradation.

作者信息

Song Dongxue, Li Mingxia, Liao Lijun, Guo Liping, Liu Haixia, Wang Bo, Li Zhenzi

机构信息

Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.

Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.

出版信息

Nanomaterials (Basel). 2023 Jun 12;13(12):1841. doi: 10.3390/nano13121841.

DOI:10.3390/nano13121841

PMID:37368271

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10303594/

Abstract

Semiconductor photocatalysts are essential materials in the field of environmental remediation. Various photocatalysts have been developed to solve the contamination problem of norfloxacin in water pollution. Among them, a crucial ternary photocatalyst, BiOCl, has attracted extensive attention due to its unique layered structure. In this work, high-crystallinity BiOCl nanosheets were prepared using a one-step hydrothermal method. The obtained BiOCl nanosheets showed good photocatalytic degradation performance, and the degradation rate of highly toxic norfloxacin using BiOCl reached 84% within 180 min. The internal structure and surface chemical state of BiOCl were analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman, Fourier transform infrared spectroscopy (FTIR), UV-visible diffuse reflectance (UV-vis), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectra (XPS), and photoelectric techniques. The higher crystallinity of BiOCl closely aligned molecules with each other, which improved the separation efficiency of photogenerated charges and showed high degradation efficiency for norfloxacin antibiotics. Furthermore, the obtained BiOCl nanosheets possess decent photocatalytic stability and recyclability.

摘要

半导体光催化剂是环境修复领域的重要材料。为了解决水污染中诺氟沙星的污染问题，人们开发了各种光催化剂。其中，一种关键的三元光催化剂BiOCl因其独特的层状结构而受到广泛关注。在这项工作中，采用一步水热法制备了高结晶度的BiOCl纳米片。所制备的BiOCl纳米片表现出良好的光催化降解性能，在180分钟内，BiOCl对剧毒诺氟沙星的降解率达到84%。运用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、拉曼光谱、傅里叶变换红外光谱（FTIR）、紫外可见漫反射光谱（UV-vis）、比表面积分析仪（BET）、X射线光电子能谱（XPS）和光电技术对BiOCl的内部结构和表面化学状态进行了分析。BiOCl较高的结晶度使分子彼此紧密排列，提高了光生电荷的分离效率，并对诺氟沙星抗生素表现出较高的降解效率。此外，所制备的BiOCl纳米片具有良好的光催化稳定性和可回收性。