TiO2/g-C3N4复合粉体的制备及其在紫外/芬顿反应中光催化性能

人工晶体学报 ›› 2022, Vol. 51 ›› Issue (8): 1466-1472.

TiO₂/g-C₃N₄复合粉体的制备及其在紫外/芬顿反应中光催化性能

孟汝浩¹, 班新星¹, 左宏森¹, 李跃¹, 栗正新¹, 邵俊永², 孙冠男², 郝素叶², 韩少星², 张霖³, 张国威³, 周少杰³

1.河南工业大学材料科学与工程学院,郑州 450001;
2.郑州磨料磨具磨削研究所有限公司,郑州 450001;
3.白鸽磨料磨具有限公司,郑州 450001

收稿日期:2022-03-04 出版日期:2022-08-15 发布日期:2022-09-08
通讯作者: 栗正新,教授。E-mail:zhengxin_li@haut.edu.cn
作者简介:孟汝浩(1997—),男,河南省人,硕士研究生。E-mail:mengee@163.com
基金资助:
中国博士后科学基金(2022M712923);郑州市重大科技专项项目(2021KJZX0062);河南省创新引领性产业集群专项(201200210800)

Preparation of TiO₂/g-C₃N₄ Composite Powder and Its Photocatalytic Performance in UV/Fenton Reaction

MENG Ruhao¹, BAN Xinxing¹, ZUO Hongsen¹, LI Yue¹, LI Zhengxin¹, SHAO Junyong², SUN Guannan², HAO Suye², HAN Shaoxing², ZHANG Lin³, ZHANG Guowei³, ZHOU Shaojie³

1. School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China;
2. Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd., Zhengzhou 450001, China;
3. Whitedove Abrasives Co., Ltd., Zhengzhou 450001, China

Received:2022-03-04 Online:2022-08-15 Published:2022-09-08

摘要/Abstract

摘要： 本文通过静电吸附法制备了TiO₂/g-C₃N₄复合粉体。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(UV-Vis DRS)等对其形貌、成分、光学性能进行表征。以罗丹明B为模拟污染物,表征其在紫外光条件下的光催化性能。结果表明:在降解罗丹明B实验中,当复合粉体中TiO₂负载量达到15%(质量分数)时,具有更明显的催化降解效果,在20 min内降解率可以达到99.40%。在加入异丙醇作为羟基自由基捕获剂后,降解率降到了27.30%,确定了反应的主要活性物质为羟基自由基。紫外辅助芬顿反应可以明显提高传统芬顿反应的效果,本文还对催化剂的反应机理进行了相应探索。

关键词: TiO₂/g-C₃N₄, 芬顿反应, 光催化, 羟基自由基, 静电吸附法, 异质结, 降解

Abstract: In this paper, TiO₂/g-C₃N₄ composite powder was prepared by electrostatic adsorption method, and its morphology, composition and optical properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), UV-Vis diffuse reflectometry (UV-Vis DRS) and other characterization methods. Rhodamine B was used as a simulated pollutant to characterize its photocatalytic performance under UV light. The result show that: in the Rhodamine B degradation experiment, when the loading amount of TiO₂ reaches 15% (mass fraction), the composite powder has more obvious catalytic degradation effect, and the degradation efficiency can reach 99.40% within 20 min. After adding isopropanol as hydroxyl radical capture agent, the degradation rate decreases to 27.30%, and it is determined that the main active substance of the reaction is hydroxyl radical. Ultraviolet assisted Fenton reaction can obviously improve the effect of traditional Fenton reaction, and the reaction mechanism of catalyst was explored.

Key words: TiO₂/g-C₃N₄, Fenton reaction, photocatalysis, hydroxyl radical, electrostatic adsorption method, heterojunction, degradation

中图分类号:

O644.1

孟汝浩, 班新星, 左宏森, 李跃, 栗正新, 邵俊永, 孙冠男, 郝素叶, 韩少星, 张霖, 张国威, 周少杰. TiO₂/g-C₃N₄复合粉体的制备及其在紫外/芬顿反应中光催化性能[J]. 人工晶体学报, 2022, 51(8): 1466-1472.

MENG Ruhao, BAN Xinxing, ZUO Hongsen, LI Yue, LI Zhengxin, SHAO Junyong, SUN Guannan, HAO Suye, HAN Shaoxing, ZHANG Lin, ZHANG Guowei, ZHOU Shaojie. Preparation of TiO₂/g-C₃N₄ Composite Powder and Its Photocatalytic Performance in UV/Fenton Reaction[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(8): 1466-1472.

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TiO₂/g-C₃N₄复合粉体的制备及其在紫外/芬顿反应中光催化性能

Preparation of TiO₂/g-C₃N₄ Composite Powder and Its Photocatalytic Performance in UV/Fenton Reaction

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