首页|共价三嗪框架负载钌分子催化剂用于高效光催化析氧反应

共价三嗪框架负载钌分子催化剂用于高效光催化析氧反应

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
由于析氧反应的内在动力学缓慢,开发高效的光催化析氧反应催化剂,以利用太阳能进行光催化分解水产氧,面临着巨大的挑战.本研究设计了一种新型的"主-客体"光催化系统,通过简单的预负载将单位点钌(Ru)分子催化剂引入共价三嗪框架(CTFs)的孔道内.其中,CTFs作为光敏剂和光催化载体,单核钌配合物Ru-bda-Isoq作为分子水氧化催化剂.在可见光照射下,Ru-bda-Isoq@CTF-Bph在5 h内平均析氧速率达到2308 μmol g-1 h-1,其性能超过了大多数有机光催化剂.同时,研究还发现多孔光敏剂与分子催化剂之间的结构匹配起着非常关键的作用.该体系具有广泛的适用性,这一策略有助于高效水氧化光催化系统的设计.
Covalent triazine frameworks with Ru molecular catalyst for efficient photocatalytic oxygen evolution reaction
The development of efficient oxygen evolution reaction(OER)photocatalysts to enable solar-driven photo-catalytic water splitting into oxygen has been tremendously challenging,primarily due to the low oxygen evolution effi-ciency caused by intrinsically sluggish kinetics.Herein,we report the design of a novel"host-guest"photocatalytic system that incorporates the molecular ruthenium(Ru)catalyst into covalent triazine framework(CTF)channels through a facile immersion treatment.The CTF acts as the photosensitizer and support material,while the mononuclear Ru-based complex Ru-bda-Isoq acts as a molecular water-oxidation catalyst.Remarkably,Ru-bda-Isoq@CTF-Bph achieves an excellent oxygen evolution rate of up to 2308 μmol g-1 h-1 under visible light irradiation for 5 h.The structural matching between the porous photosensitizer and molecular catalyst is found to play a very critical role in achieving the high performance,and the specificity and universality of this system are also highlighted.This strategy provides valuable insights into the design of ef-ficient water oxidation photocatalytic systems.

covalent triazine frameworks(CTFs)molecular wa-ter-oxidation catalystRu-bda-Isoqphotocatalytic oxygen evo-lution

孙瑞雪、胡勋亮、舒畅、郭彦彤、王笑颜、谭必恩

展开 >

Key Laboratory of Material Chemistry for Energy Conversion and Storage,Ministry of Education,Hubei Key Laboratory of Material Chemistry and Service Failure,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

covalent triazine frameworks(CTFs) molecular wa-ter-oxidation catalyst Ru-bda-Isoq photocatalytic oxygen evo-lution

Analysis and Testing Center,Huazhong University of Science and TechnologyNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience and Technology Department of Hubei Province

22161142005219750862019CFA008

2024

10.1007/s40843-023-2714-x

中国科学:材料科学(英文)

中国科学:材料科学(英文)

CSTPCD
ISSN：
年,卷(期)：2024.67(2)
  • 36