| g-C3N4/POPs异质结制备及其可见光催化性能 |
| |
| 引用本文： | 郭佳允,傅炀杰,张柯杰,姬云,杨娟,王齐. g-C3N4/POPs异质结制备及其可见光催化性能[J]. 复合材料学报, 2023, 40(2): 904-910. DOI: 10.13801/j.cnki.fhclxb.20220325.001 |
| |
| 作者姓名： | 郭佳允 傅炀杰 张柯杰 姬云 杨娟 王齐 |
| |
| 作者单位： | 1.浙江工商大学 环境科学与工程学院,杭州 310018 |
| |
| 基金项目： | 国家自然科学基金(21876154;52074103);浙江师范大学“先进催化材料”教育部重点实验室和浙江省“固体表面反应化学”重点实验室开放课题(KLMEACM202104)National Natural Science Foundation of China (21876154; 52074103); Open Research Fund of Key Laboratory of the Ministry of Education for Advanced Catalysis Materials and Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University (KLMEACM202104) |
| |
| 摘 要： | 光催化技术是一种极具应用前景的环境修复技术,开发高效、稳定、具有可见光响应的光催化剂是其研究的重点之一。本文采用常压溶剂热法,以1, 3, 5-三(4-氨基苯基)苯(TAPB)和2, 5-二甲氧基苯-1, 4二甲醛(DMTP)为单体合成的共轭多孔有机聚合物TAPB-DMTP POP为基底,原位负载不同比例的g-C3N4,制备g-C3N4/POPs复合光催化剂。通过XRD、FTIR、BET、TGA、UV-Vis DRS、电流-时间(i-t)和EIS等测试方法表征了g-C3N4/POPs的化学结构与光学特性。在可见光条件下,选择Cr(Ⅵ)为模型污染物探究了不同gC3N4负载量的g-C3N4/POPs光催化还原效率,并对pH值、催化剂用量和底物浓度等影响因素进一步探究。结果表明：在pH=2条件下,g-C3N4/POP-2表现出了最佳...
|
| 关 键 词： | 多孔有机聚合物 g-C3N4 异质结 光催化 Cr(Ⅵ)还原 |
| 收稿时间： | 2022-01-10 |
Preparation and visible light catalytic performance of g-C3N4/POPs heterojunction |
| |
| Affiliation: | 1.School of Environment Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China2.Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China3.College of Safety and Engineering, Henan Polytechnic University, Zhengzhou 450018, China |
| |
| Abstract: | As a promising environmental remediation technology, the development of efficient and stable photocatalysts with visible light response is one of the important studies in photocatalysis technology. In this work, g-C3N4/porous organic polymers (POPs) composite photocatalysts were prepared via atmospheric solvothermal method. Different ratios of g-C3N4 were in-situ loaded on conjugated porous organic polymers TAPB-DMTP POP synthesized with 1, 3, 5-tris(4-aminophenyl) benzene (TAPB) and 2, 5-dimethoxybenzene-1, 4-diformaldehyde (DMTP) as monomers. The chemical structure and optical properties of g-C3N4/POPs materials were characterized by XRD, FTIR, BET, TGA, UV-Vis DRS, current-time (i-t) and EIS methods. Cr(VI) was selected as the model pollutant, the photocatalytic reduction activities of g-C3N4/POPs photocatalysts with different g-C3N4 loading ratios were explored under visible light conditions, and the effects of pH value, catalyst dosage and substrate concentration were further investigated. The results shows that g-C3N4/POP-2 exhibits the best photocatalytic reduction performance at pH=2 with the reduction efficiency of 99.1% after 30 min of visible illumination. The reduction efficiency of Cr(VI) is significantly improved over g-C3N4/POP-2 compared with pure g-C3N4 and TAPB-DMTP POP, and the fitted first-order kinetics rate are 22.0 times and 2.2 times that of g-C3N4 and TAPB-DMTP POP, respectively. This composite also exhibits excellent photocatalytic stability as the Cr(VI) reduction rate reaches more than 90% after five cycles. |
| |
| Keywords: | |
|
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载免费的PDF全文 |
|
