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Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection

Two-dimensional (2D) phthalocyanine-based covalent organic frameworks (COFs) provide an ideal platform for efficient and rapid gas sensing—this can be attributed to their regular structure, moderate conductivity, and a large number of scalable metal active centers. However, there remains a need to e...

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Autores principales: Chen, Xiyu, Zeng, Min, Yang, Jianhua, Hu, Nantao, Duan, Xiaoyong, Cai, Wei, Su, Yanjie, Yang, Zhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10224514/
https://www.ncbi.nlm.nih.gov/pubmed/37242076
http://dx.doi.org/10.3390/nano13101660
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author Chen, Xiyu
Zeng, Min
Yang, Jianhua
Hu, Nantao
Duan, Xiaoyong
Cai, Wei
Su, Yanjie
Yang, Zhi
author_facet Chen, Xiyu
Zeng, Min
Yang, Jianhua
Hu, Nantao
Duan, Xiaoyong
Cai, Wei
Su, Yanjie
Yang, Zhi
author_sort Chen, Xiyu
collection PubMed
description Two-dimensional (2D) phthalocyanine-based covalent organic frameworks (COFs) provide an ideal platform for efficient and rapid gas sensing—this can be attributed to their regular structure, moderate conductivity, and a large number of scalable metal active centers. However, there remains a need to explore structural modification strategies for optimizing the sluggish desorption process caused by the extensive porosity and strong adsorption effect of metal sites. Herein, we reported a 2D bimetallic phthalocyanine-based COF (COF-CuNiPc) as chemiresistive gas sensors that exhibited a high gas-sensing performance to nitrogen dioxide (NO(2)). Bimetallic COF-CuNiPc with an asymmetric synergistic effect achieves a fast adsorption/desorption process to NO(2). It is demonstrated that the COF-CuNiPc can detect 50 ppb NO(2) with a recovery time of 7 s assisted by ultraviolet illumination. Compared with single-metal phthalocyanine-based COFs (COF-CuPc and COF-NiPc), the bimetallic structure of COF-CuNiPc can provide a proper band gap to interact with NO(2) gas molecules. The CuNiPc heterometallic active site expands the overlap of d-orbitals, and the optimized electronic arrangement accelerates the adsorption/desorption processes. The concept of a synergistic effect enabled by bimetallic phthalocyanines in this work can provide an innovative direction to design high-performance chemiresistive gas sensors.
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spelling pubmed-102245142023-05-28 Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection Chen, Xiyu Zeng, Min Yang, Jianhua Hu, Nantao Duan, Xiaoyong Cai, Wei Su, Yanjie Yang, Zhi Nanomaterials (Basel) Article Two-dimensional (2D) phthalocyanine-based covalent organic frameworks (COFs) provide an ideal platform for efficient and rapid gas sensing—this can be attributed to their regular structure, moderate conductivity, and a large number of scalable metal active centers. However, there remains a need to explore structural modification strategies for optimizing the sluggish desorption process caused by the extensive porosity and strong adsorption effect of metal sites. Herein, we reported a 2D bimetallic phthalocyanine-based COF (COF-CuNiPc) as chemiresistive gas sensors that exhibited a high gas-sensing performance to nitrogen dioxide (NO(2)). Bimetallic COF-CuNiPc with an asymmetric synergistic effect achieves a fast adsorption/desorption process to NO(2). It is demonstrated that the COF-CuNiPc can detect 50 ppb NO(2) with a recovery time of 7 s assisted by ultraviolet illumination. Compared with single-metal phthalocyanine-based COFs (COF-CuPc and COF-NiPc), the bimetallic structure of COF-CuNiPc can provide a proper band gap to interact with NO(2) gas molecules. The CuNiPc heterometallic active site expands the overlap of d-orbitals, and the optimized electronic arrangement accelerates the adsorption/desorption processes. The concept of a synergistic effect enabled by bimetallic phthalocyanines in this work can provide an innovative direction to design high-performance chemiresistive gas sensors. MDPI 2023-05-17 /pmc/articles/PMC10224514/ /pubmed/37242076 http://dx.doi.org/10.3390/nano13101660 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Xiyu
Zeng, Min
Yang, Jianhua
Hu, Nantao
Duan, Xiaoyong
Cai, Wei
Su, Yanjie
Yang, Zhi
Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection
title Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection
title_full Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection
title_fullStr Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection
title_full_unstemmed Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection
title_short Two-Dimensional Bimetallic Phthalocyanine Covalent-Organic-Framework-Based Chemiresistive Gas Sensor for ppb-Level NO(2) Detection
title_sort two-dimensional bimetallic phthalocyanine covalent-organic-framework-based chemiresistive gas sensor for ppb-level no(2) detection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10224514/
https://www.ncbi.nlm.nih.gov/pubmed/37242076
http://dx.doi.org/10.3390/nano13101660
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