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材料研究学报  2021, Vol. 35 Issue (12): 911-917    DOI: 10.11901/1005.3093.2021.234
  研究论文 本期目录 | 过刊浏览 |
g-C3N4/Bi12O17Cl2复合物的制备及其光催化性能
宋月红1, 代卫丽1, 徐辉2, 赵敬哲3()
1.商洛学院 化学工程与现代材料学院 陕西省尾矿资源综合利用重点实验室 陕西省矿产资源清洁高效转化与新材料工程研究中心 商洛 726000
2.湖南省益阳市南县检验检测中心 益阳 413000
3.湖南大学化学化工学院 长沙 410082
Preparation and Photocatalytic Properties of g-C3N4/Bi12O17Cl2 Composites
SONG Yuehong1, DAI Weili1, XU Hui2, ZHAO Jingzhe3()
1.Shangluo University, College of Chemical Engineering and Modern Materials, Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean & Efficient Conversion and New Materials, Shangluo 726000, China
2.Nanxian Inspection and Testing Center of Yiyang City in Hunan Province, Yiyang 413000, China
3.Hunan University, College of Chemistry and Chemical Engineering, Changsha 410082, China
引用本文:

宋月红, 代卫丽, 徐辉, 赵敬哲. g-C3N4/Bi12O17Cl2复合物的制备及其光催化性能[J]. 材料研究学报, 2021, 35(12): 911-917.
Yuehong SONG, Weili DAI, Hui XU, Jingzhe ZHAO. Preparation and Photocatalytic Properties of g-C3N4/Bi12O17Cl2 Composites[J]. Chinese Journal of Materials Research, 2021, 35(12): 911-917.

全文: PDF(8315 KB)   HTML
摘要: 

以硝酸铋、氯化钠和氢氧化钠为原料用液相沉淀法制备g-C3N4/Bi12O17Cl2复合光催化剂,并用X射线衍射(XRD)、傅里叶红外光谱(FT-IR)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UV-Vis DRS)等手段表征其组成、微观形貌和性能,以罗丹明B为模拟污染物研究了在可见光照射下g-C3N4对g-C3N4/Bi12O17Cl2复合光催化剂活性的影响及其光催化机理。结果表明,2% (质量分数) g-C3N4/Bi12O17Cl2复合光催化剂的光催化性能最好,见光90 min后对罗丹明B的降解率达到98%。

关键词 无机非金属材料g-C3N4/Bi12O17Cl2复合物光催化罗丹明B光催化机理    
Abstract

Composites of g-C3N4/Bi12O17Cl2 were prepared by a simple liquid phase precipitation method with bismuth nitrate, sodium chloride, sodium hydroxide and graphitic carbon nitride as raw material. The composition and morphology of the prepared composites were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The effect of g-C3N4 on the photocatalytic activity of g-C3N4/Bi12O17Cl2 composites were evaluated with Rhodamine B as the simulated pollutant under visible light. The results show that the photocatalytic performance of 2 % g-C3N4/Bi12O17Cl2 composite is the best, after 90 min of light exposure the photocatalytic degradation rate of RhB reached 98.64%.

Key wordsinorganic nonmetallic materials    g-C3N4/Bi12O17Cl2 composites    photocatalysis    RhB    photocatalytic mechanism
收稿日期: 2021-04-15     
ZTFLH:  O614  
基金资助:国家自然科学基金(21571057);商洛学院科研(17SKY018);陕西省教育厅(19JS026);陕西省自然科学基础研究计划(2019JQ-156)
作者简介: 宋月红,女,1986年生,讲师
图1  g-C3N4、Bi12O17Cl2和一系列g-C3N4/Bi12O17Cl2复合物的XRD谱
图2  g-C3N4、Bi12O17Cl2和g-C3N4/Bi12O17Cl2复合物的FT-IR谱
图3  样品的SEM照片
图4  g-C3N4、Bi12O17Cl2、g-C3N4/Bi12O17Cl2复合物的紫外-可见漫反射光谱和(ahv)1/2-hv曲线
SamplesEVB/eVECB/eVEg/eV
g-C3N43.7440.9342.81
Bi12O17Cl21.695-0.4652.16
表1  g-C3N4和Bi12O17Cl2的EVB、ECB和Eg
图5  g-C3N4、Bi12O17Cl2和g-C3N4/Bi12O17Cl2复合物光催化降解RhB其浓度随时间的变化曲线、降解RhB的ln(C0/C)-t曲线以及相应的反应动力学常数(k)
图6  捕获剂对g-C3N4/Bi12O17Cl2复合物光催化性能的影响和光催化机理
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