Inorganic Chemicals Industry >
Facile synthesis of bismuth oxychloride and its photocatalytic degradation performance of p-nitrophenol
Received date: 2021-12-24
Online published: 2022-09-22
Photocatalytic degradation is an effective method for treating environmental pollutants.Bismuth oxychloride（BiOCl） has emerged as a potential alternative to traditional photocatalysts and has shown excellent performance.BiOCl catalyst was synthesized by a simple mechanical agitation method，and its morphology，composition，structure，specific surface area and optical properties were characterized by scanning electron microscopy（SEM），transmission electron microscopy（TEM），infrared spectroscopy（FT-IR），X-ray diffraction（XRD），X-ray photoelectron spectroscopy（XPS），N2 adsorption?desorption and UV-Vis-diffuse reflectance（UV-VIS-DRS）.The results showed that the as?obtained BiOCl exhibited a two?dimensional nanosheet morphology with a band gap of 3.3 eV.The photocatalytic degradation of p-nitrophenol（PNP） was employed as a model reaction to evaluate the photocatalytic activity of BiOCl.Bene?ting from the high exposed（110） facet，degradation of PNP could be 99.7% by BiOCl with catalyst concentration of 0.4 g/L in 80 min. Kinetic studies showed that the degradation process was following the first order kinetic model with the kinetic constant of 0.043 min-1. Radical capture experiment demonstrated that ·O2- and ·OH played the main roles in the degradation process.Besides，the photocatalytic degradation mechanism of p-nitrophenol by BiOCl was also proposed. The results offered valuable information and reference for the treatment of wastewater through photocatalytic processes.
Key words： photocatalysis; degradation; BiOCl; radicals
Haijuan TONG , Siqi LI , Fangfang FAN , Weiyuan ZUO , Bingfang SHI . Facile synthesis of bismuth oxychloride and its photocatalytic degradation performance of p-nitrophenol[J]. Inorganic Chemicals Industry, 2022 , 54(9) : 157 -162 . DOI: 10.19964/j.issn.1006-4990.2021-0776
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