Grafting anthraquinone on ultrathin C3N4 for selective toluene photooxidation

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Science China Materials Pub Date : 2024-11-11 DOI:10.1007/s40843-024-3105-1

Xiong Wang (, ), Guang-Hui Chen (, ), Yang Li (, ), Sheng Tian (, ), Bing-Hao Wang (, ), Biao Hu (, ), Xing-Sheng Hu (, ), Chao Peng (, ), Lang Chen (, ), Shuang-Feng Yin (, )

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引用次数: 0

Abstract

Anthraquinone (AQ), an effective hydrogen atom transfer catalyst, is limited in photocatalytic applications due to its dimerization. In this study, a simple 3-(3-(dimethylamino) propyl)-1-ethylcarbodiimide hydrochloride/N-hydroxysuccinimide (EDC/HNS) assisted linking strategy was developed to covalently graft AQ–COOH onto C₃N₄ (CN). Using this method, we successfully synthesized amide-bonded CN–AQ ultrathin nanosheets. The amide covalent bond formed between C₃N₄ and AQ facilitates efficient electron migration from C₃N₄ to AQ. As a result, charge carrier recombination is prevented and the hydrogen atom transfer capacity of AQ is enhanced. The CN–AQ photocatalyst exhibits high activity and selectivity with a toluene conversion rate of 10274 (mol g⁻¹ h⁻¹ and 85% selectivity for benzaldehyde, which is 31 times and 1.7 times higher than those of pristine C₃N₄ and AQ–COOH, respectively. Owing to the strong covalent bond in CN–AQ composite, the stability of AQ–COOH was greatly enhanced. This approach provides a new pathway to improve catalytic efficiency and solve the dimerization problem of AQ.

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.