Halogen atom-induced local asymmetric electron in covalent organic frameworks boosts photosynthesis of hydrogen peroxide from water and air

IF 17.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-03-27 DOI:10.1016/j.matt.2025.102076

Youxing Liu, Yaru Guo, Nadaraj Sathishkumar, Minghui Liu, Lu Li, Zhiyuan Sang, Rongjuan Feng, Zongqiang Sun, Chenglong Sun, Mingchuan Luo, Xuliang Deng, Gang Lu, Shaojun Guo

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引用次数: 0

Abstract

The solar-to-chemical conversion (SCC) efficiency of hydrogen peroxide (H₂O₂) photosynthesis is governed by the O₂ adsorption model and energy level, which are experimentally challenging to be tuned. Herein, we report a new strategy for tuning of the O₂ adsorption and electron potential energy level of covalent organic frameworks (COFs) using halogen atom (F, Cl, Br, and I) as a regulatory reagent, and demonstrate that I-COFs exhibit the maximum thermodynamic driving force for 2e^– oxygen reduction reaction (ORR). The introduction of I atom inhibits the O–O bond breakage for enhancing the selectivity of 2e^– ORR from 56.5% to 87.0%, thus promoting the continuous natural sunlight-driven photosynthesis of H₂O₂ directly from water and air, showing a high SCC efficiency of 1.88% and the operational stability of over 200 h. Meanwhile, I-COFs also show 100% antibacterial performance and efficient wound healing ability, which is significantly better than that of H-COFs with symmetric electron distribution.

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.