| 构建S型异质结COF/CdS以增强太阳光产氢 |
| |
| 引用本文： | 孙龙,李铃铃,杨娟,范佳杰,徐全龙.构建S型异质结COF/CdS以增强太阳光产氢[J].催化学报,2022(2):350-358. |
| |
| 作者姓名： | 孙龙 李铃铃 杨娟 范佳杰 徐全龙 |
| |
| 作者单位： | 温州大学化学与材料工程学院, 浙江省碳材料重点实验室, 浙江温州325027;郑州大学材料科学与工程学院, 河南郑州450002;广东工业大学材料与能源学院, 广东广州510006;温州大学化学与材料工程学院, 浙江省碳材料重点实验室, 浙江温州325027;郑州大学材料科学与工程学院, 河南郑州450002 |
| |
| 基金项目： | 国家自然科学基金(21905209,52073263);河南省自然科学基金(212300410080). |
| |
| 摘 要： | 高效利用太阳能是解决当前能源危机和环境问题的有效途径.光催化制氢技术具有绿色环保、成本低等优势,且氢气可作为能源载体,其燃烧产物仅为水,因此被认为是实现高效利用太阳能的最佳途径之一.为更好地利用太阳能,研究者们致力于开发具有良好可见光活性的光催化剂.CdS因具有良好的电荷转移能力和在可见光区域强吸收的特性,在光催化制氢...
|
| 关 键 词： | S型异质结 共价有机框架 CdS 光催化制氢 |
Fabricating covalent organic framework/CdS S-scheme heterojunctions for improved solar hydrogen generation |
| |
| Long Sun,Lingling Li,Juan Yang,Jiajie Fan,Quanlong Xu.Fabricating covalent organic framework/CdS S-scheme heterojunctions for improved solar hydrogen generation[J].Chinese Journal of Catalysis,2022(2):350-358. |
| |
| Authors: | Long Sun Lingling Li Juan Yang Jiajie Fan Quanlong Xu |
| |
| Institution: | (Key laboratory of Carbon Materials of Zhejiang Province,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325027,Zhejiang,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450002,Henan,China;School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,Guangdong,China) |
| |
| Abstract: | The fabrication of S-scheme heterojunctions has received considerable attention as an effective approach to promote the separation and migration of photoexcited electron/hole pairs and retain strong redox abilities. Herein, an imine-based porous covalent organic framework (COF-LZU1) is integrated with controllably fabricated CdS hollow cubes, resulting in the formation of an S-scheme heterojunction. When the COF content reaches 1.5 wt％, the COF/CdS heterostructure (1.5％COF/CdS) achieves the highest hydrogen generation rate of 8670 μmol·h-1·g-1, which is ap-proximately 2.1 times higher than that of pure CdS. The apparent quantum efficiency (AQE) of 1.5％COF/CdS is approximately 8.9％ at 420 nm. Further systematic analysis shows that the inti-mate contact interface and suitable energy band structures between CdS and COF can induce the formation of an internal electric field at the heterojunction interface, which can effectively drive the spatial separation of photoexcited charge carriers and simultaneously maintain a strong redox abil-ity, thus enhancing the photocatalytic H2 evolution performance. |
| |
| Keywords: | S-scheme Covalent organic framework CdS Photocatalytic H2 production |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
