高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (3): 20230468.doi: 10.7503/cjcu20230468

• 物理化学 • 上一篇    下一篇

EI/P25/Zr-MOFs异质结的构筑及催化产氢性能

牟迪1, 吴海洋1, 张楠琦1, 安兆坤1, 何漩1(), 张富青2, 赵雷1(), 陈辉1, 方伟1, 杜星1, 王大珩1, 李薇馨1   

  1. 1.武汉科技大学省部共建耐火材料与冶金国家重点实验室, 武汉 430081
    2.武汉工程大学化学与环境工程学院, 武汉 430070
  • 收稿日期:2023-11-10 出版日期:2024-03-10 发布日期:2024-01-31
  • 通讯作者: 何漩,赵雷 E-mail:xuan.he@wust.edu.cn;zhaolei@wust.edu.cn
  • 基金资助:
    绿色化工过程教育部重点实验室开放基金(GCP2022003);国家自然科学基金(22105151);湖北省自然科学基金(2021CFB469)

Construction of EI/P25/Zr-MOFs Heterojunction and Its Performance for Photocatalytic Hydrogen Production

MOU Di1, WU Haiyang1, ZHANG Nanqi1, AN Zhaokun1, HE Xuan1(), ZHANG Fuqing2, ZHAO Lei1(), CHEN Hui1, FANG Wei1, DU Xing1, WANG Daheng1, LI Weixin1   

  1. 1.State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China
    2.School of Chemistry and Environmental Engineering,Wuhan Institute of Technology,Wuhan 430070,China
  • Received:2023-11-10 Online:2024-03-10 Published:2024-01-31
  • Contact: HE Xuan, ZHAO Lei E-mail:xuan.he@wust.edu.cn;zhaolei@wust.edu.cn
  • Supported by:
    the Open Project of Key Laboratory of Green Chemical Engineering Process of Ministry of Education, China(GCP2022003);the National Natural Science Foundation of China(22105151);the Natural Science Foundation of Hubei Province, China(2021CFB469)

摘要:

UiO-66-NH2(NUO)因具有优异的水稳定性被用于光催化分解水制氢, 但其制氢效率仍有待提升. 本文在NUO前驱体溶液中加入2-(2-芴基)-4,5-1-溴二苯基-咪唑(EI)和二氧化钛P25, 采用水热法合成EI/P25/NUO异质结. 与单一Zr-MOFs和二元EI/NUO相比, EI/P25/NUO异质结可见光驱动的光催化产氢速率可达6530.60 μmol·g-1·h-1, 分别为NUO和EI/NUO产氢速率的304倍和34倍. 这是由于EI的引入可有效提高体系中光生载流子的浓度, 电子传输层P25则可促进EI产生的光生电子向NUO间的转移, 降低光生载流子的复合几率, 从而进一步提升光催化分解水制氢性能.

关键词: EI/P25/NUO异质结, 光催化制氢, 电荷转移

Abstract:

UiO-66-NH2(NUO) has been used for photocatalytic hydrogen generation due to its excellent water stability, but its hydrogen production efficiency still needs to be improved. In this paper, EI/P25/NUO heterojunction was synthesized by adding 2-(2-fluorenyl)-4,5-1-bromodiphenyl-imidazole(EI) and P25 in NUO precursor solution via hydrothermal method. Compared with single Zr-MOFs and binary EI/NUO, the visible-light-driven photocatalytic hydrogen production rate of the EI/P25/NUO heterojunction can reach 6530.60 μmol·g-1·h-1, which is 304 times and 34 times higher than that of NUO and EI/NUO, respectively. This is because the introduction of EI can effectively improve the concentration of photogenerated carriers in the system, and the electron transport layer P25 can promote the transfer of photogenerated electrons generated by EI to NUO, reduce the recombination probability of photogenerated carriers, and further improve the performance of photocatalytic water decomposition for hydrogen production.

Key words: EI/P25/NUO heterojunction, Photocatalytic hydrogen production, Charge transfer

中图分类号: 

TrendMD: