Covalent Organic Framework Encapsulating Layered Oxide Perovskite for Efficient Photosynthesis of H2O2

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2024-12-02 DOI:10.1002/aenm.202404029

Yuan Teng, Jing Zhao, Zi‐Ming Ye, Chao‐Wen Tan, Ling‐Ling Ning, Yi‐Yang Zhou, Zhilian Wu, Dai‐Bin Kuang, Youji Li

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引用次数: 0

Abstract

Driving efficient artificial photosynthesis of H2O2 is highly desirable in both academic and industrial fields. Here, a new core–shell Bi3TiNbO9@C4N heterojunction is constructed for efficient photocatalytic H2O2 production by in situ encapsulating an ultrathin layer of covalent organic framework material (C4N) on Aurivillius‐type Bi3TiNbO9 microsheets. The porous C4N layer is found to enhance visible‐light absorption ability and facilitate the adsorption and activation of the reactants and intermediates. The hybrid heterojunction follows an S‐scheme charge transfer with the assistance of a strong internal electric field (IEF), which promotes the spatial separation of photogenerated carriers effectively and maintains their strong redox abilities. As a result, the optimized Bi3TiNbO9@C4N unveils a high H2O2 yield rate of 1.25(2) mmol g−1 h−1 in the absence of sacrificial agents and cocatalyst, 10.9 and 3.5 folds higher than those of pristine Bi3TiNbO9 and C4N catalysts, respectively. This work provides an in situ encapsulating strategy to decorate covalent organic frameworks (COFs) on oxide perovskites for artificial photosynthesis of H2O2, which may stimulate the intensive investigation interests of functional materials/COFs heterojunction materials for various photocatalysis applications.

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.