| g-C3N4/Ag/TiO2复合材料的构筑及其光催化性能（英文） |
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| 引用本文： | 李平,张孝贤,斯颖,梁婷婷,刘欢,邱灵芳,段舒祺,多树旺,陈忠.g-C3N4/Ag/TiO2复合材料的构筑及其光催化性能（英文）[J].无机化学学报,2020,36(3):566-574. |
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| 作者姓名： | 李平 张孝贤 斯颖 梁婷婷 刘欢 邱灵芳 段舒祺 多树旺 陈忠 |
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| 作者单位： | 江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013,江西科技师范大学材料与机电学院, 江西省材料表面工程重点实验室, 南昌 330013 |
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| 基金项目： | 国家自然科学基金（No.41763020）、江西省自然科学基金（No.20171BAB206008，20181BAB206011）、江西省教育厅科学技术研究项目（No.GJJ180635，GJJ180596，GJJ180603，GJJ170665）和江西科技师范大学博士启动基金（No.2017BSQD008）资助 |
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| 摘 要： | 以合成的g-C3N4纳米片和Ag/TiO2空心微球为原料,采用机械搅拌的方法构筑了g-C3N4/Ag/TiO2三元复合光催化剂。采用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)、X射线光电子能谱(XPS)、紫外-可见光漫反射(UV-Vis DRS)和光致发光光谱(PL)对g-C3N4/Ag/TiO2进行了表征。研究表明,g-C3N4/Ag/TiO2是由Ag/TiO2微球和g-C3N4纳米片复合而成的。与TiO2相比,其可见光响应范围延长,光生载流子的分离速率加快。在室温下,用降解罗丹明B的反应考察了g-C3N4/Ag/TiO2的可见光催化活性。研究表明,光照180 min时,g-C3N4(0.5%)/Ag/TiO2显示了最高的光催化活性(91.9%),分别是TiO2和Ag/TiO2的7.5和1.8倍。光催化活性的提高与合理的异质结构建和Ag的导电性能有关。
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| 关 键 词： | 光催化 二氧化钛 模板法 石墨相氮化碳 罗丹明B 光降解 |
| 收稿时间： | 2019/10/30 0:00:00 |
| 修稿时间： | 2019/12/17 0:00:00 |
Constructing and Photocatalytic Performance of g-C3N4/Ag/TiO2 Composites |
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| LI Ping,ZHANGA Xiao-Xian,SI Ying,LIANG Ting-Ting,LIU Huan,QIU Ling-Fang,DUAN Shu-Qi,DUO Shu-Wang and CHEN Zhong.Constructing and Photocatalytic Performance of g-C3N4/Ag/TiO2 Composites[J].Chinese Journal of Inorganic Chemistry,2020,36(3):566-574. |
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| Authors: | LI Ping ZHANGA Xiao-Xian SI Ying LIANG Ting-Ting LIU Huan QIU Ling-Fang DUAN Shu-Qi DUO Shu-Wang and CHEN Zhong |
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| Institution: | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China and Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China |
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| Abstract: | g-C3N4/Ag/TiO2 ternary photocatalysts were successfully constructed by a mechanical agitation method with as-synthesized Ag/TiO2 hollow microspheres and g-C3N4 nanosheets as the raw materials. The photocatalysts were systematically characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and photoluminescence spectra (PL). The results showed that g-C3N4/Ag/TiO2 was assembled by Ag/TiO2 microspheres and g-C3N4 nanosheets. Compared with TiO2, the resultant g-C3N4/Ag/TiO2 heterojunctions possessed longer visible-light response range and faster photo-induced carrier separation rate. At room temperature, the visible-light photocatalytic activity of g-C3N4/Ag/TiO2 was investigated by photodegradation of rhodamine B (RhB). The results showed that the highest visible-light-driven photocatalytic efficiency of g-C3N4 (0.5%)/Ag/TiO2 with 180 min of light irradiation was 91.9%, which was nearly 7.5 and 1.8 times higher than pure TiO2 and two-component Ag/TiO2, respectively. The enhanced photocatalytic activity could be mainly attributed to the reasonably designed heterojunctions and the electrical conductivity of Ag. |
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| Keywords: | photocatalysis titanium dioxide template method rhodamine B photodegradation |
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