One‐Pot Solvothermal Synthesis of Flower‐Like S‐Doped BiOCl for Enhanced Photocatalytic Property in Dye Degradation and Nitrogen Fixation

• Published in: ChemistrySelect (Weinheim) Vol. 6; no. 23; pp. 5771 - 5777
• Main Authors: Wang, Hongjuan, Hua, Chenghe, Lan, Meng, Zheng, Nan, Dong, Xiaoli, Ma, Hongchao, Zhang, Xiufang
• Format: Journal Article
• Language: English
• Published: 21.06.2021
• Subjects: dye degradation; nitrogen fixation; one-pot solvothermal; photocatalysis; S-doped BiOCl
• ISSN: 2365-6549; 2365-6549
• DOI: 10.1002/slct.202100013

Nowadays, environmental pollution and energy shortage have aroused people‘s wide concern. Here we report that S‐doped BiOCl photocatalyst was successfully fabricated via a simple solvothermal process. The as‐obtained S‐doped BiOCl photocatalysts were investigated by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray photoemission spectroscopy (XPS), nitrogen adsorption‐desorption, UV/Vis diffuse reflectance (DRS), and photoluminescence (PL) emission spectra. The photocatalytic performance of the S‐doped BiOCl photocatalyst with different S contents was evaluated by the photocatalytic degradation of cationic dye (Rhodamine‐B (RhB)) and anionic dye (Congo red (CR)). The results reveal that all the S‐doped BiOCl samples possess better photocatalytic activity than pure BiOCl. Specifically, the degradation rate of S(6 %)‐BiOCl sample for RhB and CR was 99 % and 90 %, respectively. Meanwhile, the photocatalytic nitrogen fixation performance of the S‐doped BiOCl sample was investigated. The results show that the S(6 %)‐BiOCl sample possesses an excellent NH3 yield of 108.6 μmol g−1 h−1. Moreover, the S(6 %)‐BiOCl catalysts have excellent recyclability and stability. This work provides a facile and accessible pathway to design effective photocatalysts for both photocatalytic degradation and nitrogen fixation. A facile solvothermal process was applied to prepare flower‐like S‐doped BiOCl photocatalysts. Due to the larger specific surface area, enhanced visible light absorption and more valid photogenerated carrier separation, S‐doped BiOCl exhibits outstanding photocatalytic degradation and nitrogen fixation performance. Meanwhile, the S(6 %)‐BiOCl catalysts have excellent recyclability and stability