Strategic energy-level modulation in porous heterojunctions: advancing gas sensing through Type-I to Type-II transitions

IF 14.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-07-18 DOI:10.1038/s41467-025-61836-5

Yong-Jun Chen, Yi-Ming Xu, Xiao-Liang Ye, Zhi-Peng Luo, Shi-Peng Zhu, Ke-Feng Li, Jiang-Feng Lu, Guan-E Wang, Gang Xu

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Abstract

To significantly enhance reaction efficiency of porous heterojunctions in various applications, precise engineering of customization heterostructures through energy-level modulation is indispensable. Herein, the preparation of a core-shell porous heterojunction, UiO-66@TDCOF, is reported. Taking advantage of adjustable structure of metal-organic frameworks (MOFs), the energy-level of UiO-66 core is tailored to precisely align with that of porphyrin-based covalent organic framework (denoted as TDCOF) shell. As a results, the heterojunction transitions flexibly from a type-I to a type-II configuration, which remarkably enhances the efficiency of charge separation under light irradiation, resulting in exceptional performances in chemiresistive gas sensing. Notably, the sensitivity of (NH₂)_1.24-UiO-66@TDCOF towards NO₂ is at a high level among all reported heterojunctions under visible-light condition, surpassing the majority of previously reported MOF and COF materials. This research not only presents a strategy for the design of heterojunctions but also gives an approach to material design tailored for chemical applications.

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多孔异质结的战略能级调制：通过i型到ii型转换推进气体传感

为了在各种应用中显著提高多孔异质结的反应效率，通过能级调制来定制异质结的精确工程是必不可少的。本文报道了核壳多孔异质结UiO-66@TDCOF的制备。利用金属-有机框架（mof）的可调结构，UiO-66核心的能级被量身定制，以精确对准基于卟啉的共价有机框架（TDCOF）壳层的能级。结果表明，异质结可以灵活地从i型结构转变为ii型结构，从而显著提高了光照射下电荷分离的效率，从而在化学气敏中具有优异的性能。值得注意的是，在可见光条件下，（NH2）1.24-UiO-66@TDCOF对NO2的敏感性在所有报道的异质结中都处于较高水平，超过了之前报道的大多数MOF和COF材料。这项研究不仅为异质结的设计提供了一种策略，而且为化学应用量身定制的材料设计提供了一种方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.