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In2S3/g-C3N4复合光催化剂的制备及其光催化降解四环素
引用本文:陈璞,欧晓霞,赵可,杨晓宇.In2S3/g-C3N4复合光催化剂的制备及其光催化降解四环素[J].硅酸盐通报,2023,42(1):310-318.
作者姓名:陈璞  欧晓霞  赵可  杨晓宇
作者单位:大连民族大学环境与资源学院,大连 116600
基金项目:国家自然科学基金(21477017);辽宁省自然科学基金(20170540206)
摘    要:本文分别采用热缩聚法和水热法合成了g-C3N4和In2S3,再用简单的机械研磨工艺制备出了In2S3/g-C3N4复合光催化剂。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅里叶变换红外光谱(FTIR)和紫外可见漫反射光谱(UV-Vis DRS)对In2S3/g-C3N4复合光催化剂的晶体结构、形貌、微观结构和光学性质进行了表征,在可见光照射下,通过降解四环素(TC)来评价其光催化活性。结果表明,研磨比例为1∶4(摩尔比)的In2S3/g-C3N4复合光催化剂表现出最佳的光催化性能,在氙灯下TC的光降解表观速率常数是0.025 1 min-1,分别是In2S3和g-C3N4的2.9倍和1.6倍,在自然光下TC的光降解表观速率常数是0.010 4 min-1,分别是In2S3和g-C3N4的2.6倍和1.4倍。In2S3/g-C3N4复合光催化剂优异的光催化性能归功于载流子的高效迁移和分离以及增强的光吸收能力。本研究为设计和开发用于抗生素废水处理的可见光响应光催化剂提供了一条有前景的途径。

关 键 词:In2S3/g-C3N4复合光催化剂  机械研磨  四环素  光催化  In2S3  g-C3N4  
收稿时间:2022-07-19

Preparation of In2S3/g-C3N4 Composite Photocatalyst and Its Photocatalytic Degradation of Tetracycline
CHEN Pu,OU Xiaoxia,ZHAO Ke,YANG Xiaoyu.Preparation of In2S3/g-C3N4 Composite Photocatalyst and Its Photocatalytic Degradation of Tetracycline[J].Bulletin of the Chinese Ceramic Society,2023,42(1):310-318.
Authors:CHEN Pu  OU Xiaoxia  ZHAO Ke  YANG Xiaoyu
Affiliation:College of Environment and Bioresources, Dalian Minzu University, Dalian 116600, China
Abstract:In this paper, g-C3N4 and In2S3 were synthesized by thermal polycondensation and hydrothermal method, respectively. In2S3/g-C3N4 composite photocatalyst was prepared by simple mechanical grinding technology. The crystallographic structure, morphology, microstructure and optical properties of In2S3/g-C3N4 composite photocatalyst were characterized by X-ray diffraction (XRD), scanning electron microscope(SEM), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR), and UV visible diffuse reflectance spectrum (UV-Vis DRS). The photocatalytic activity was evaluated by degradation of tetracycline (TC) under visible light irradiation. The results show that the In2S3/g-C3N4 composite photocatalyst with grinding molar ratio of 1∶4 displays the best photocatalytic activity. The observed rate constant of TC degradation under xenon lamp is 0.025 1 min-1, which is 2.9 times and 1.6 times higher than that of In2S3 and g-C3N4, respectively. The observed rate constant of TC degradation under natural light is 0.010 4 min-1, which is 2.6 times and 1.4 times higher than that of In2S3 and g-C3N4, respectively. The superior photocatalytic performance of In2S3/g-C3N4 composite photocatalyst is attributed to the efficient migration and separation of charge carriers and the enhanced light absorption capacity. This paper provides a promising approach for designing and developing visible-light-response photocatalysts applied to antibiotic wastewater treatment.
Keywords:In2S3/g-C3N4 composite photocatalyst  mechanical grinding  tetracycline  photocatalysis  In2S3  g-C3N4  
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