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Xu R, Sun B, Ji W, Sun J, Li P, Ren Z, Jing L. Construction of a CoNiHHTP MOF/PHI Z-Scheme Heterojunction for ppb Level NO 2 Photoelectric Sensing with 405 nm Irradiation at RT. ACS Sens 2024; 9:3187-3197. [PMID: 38809143 DOI: 10.1021/acssensors.4c00509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Ultrasensitive photoelectric detection of nitrogen dioxide (NO2) with PHI under visible light irradiation at room temperature (RT) remains an ongoing challenge due to the low charge separation and scarce adsorption sites. In this work, a dimensionally matched ultrathin CoNiHHTP MOF/PHI Z-scheme heterojunction is successfully constructed by taking advantage of the π-π interactions existing between the CoNiHHTP MOF and PHI. The amount-optimized heterojunction possesses a record detection limit of 1 ppb (response = 15.6%) for NO2 under 405 nm irradiation at RT, with reduced responsive (3.6 min) and recovery (2.7 min) times, good selectivity and reversibility, and long-time stability (150 days) compared with PHI, even superior to others reported at RT. Based on the time-resolved photoluminescence spectra, in situ X-ray photoelectron spectra, and diffuse reflectance infrared Fourier transform spectroscopy results, the resulting sensing performance is attributed to the favorable Z-scheme charge transfer and separation. Moreover, the Ni nodes favorably present in adjacent metal sites between the lamellae contribute to charge transfer and redistribution, whereas Co nodes could act as selective centers for promoted adsorption of NO2. Interestingly, it is confirmed that the CoNiHHTP MOF/PHI heterojunction could effectively reduce the influence of O2 in the gas-sensitive reaction due to their unique bimetallic (Co and Ni) nodes, which is also favorable for the improved sensing performances for NO2. This work provides a feasible strategy to develop promising PHI-based optoelectronic gas sensors at RT.
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Affiliation(s)
- Rongping Xu
- Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, P. R. China
| | - Baihe Sun
- School of Environmental and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, P. R. China
| | - Wenting Ji
- Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, P. R. China
| | - Jianhui Sun
- Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, P. R. China
- College of Physical Science and Technology, Heilongjiang University, Harbin 150080, P. R. China
| | - Peng Li
- Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, P. R. China
- College of Physical Science and Technology, Heilongjiang University, Harbin 150080, P. R. China
| | - Zhiyu Ren
- Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, P. R. China
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, P. R. China
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Drané M, Zbair M, Hajjar-Garreau S, Josien L, Michelin L, Bennici S, Limousy L. Unveiling the Potential of Corn Cob Biochar: Analysis of Microstructure and Composition with Emphasis on Interaction with NO 2. MATERIALS (BASEL, SWITZERLAND) 2023; 17:159. [PMID: 38204013 PMCID: PMC10780219 DOI: 10.3390/ma17010159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/21/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024]
Abstract
In the context of sustainable solutions, this study examines the pyrolysis process applied to corn cobs, with the aim of producing biochar and assessing its effectiveness in combating air pollution. In particular, it examines the influence of different pyrolysis temperatures on biochar properties. The results reveal a temperature-dependent trend in biochar yield, which peaks at 400 °C, accompanied by changes in elemental composition indicating increased stability and extended shelf life. In addition, high pyrolysis temperatures, above 400 °C, produce biochars with enlarged surfaces and improved pore structures. Notably, the highest pyrolysis temperature explored in this study is 600 °C, which significantly influences the observed properties of biochars. This study also explores the potential of biochar as an NO2 adsorbent, as identified by chemical interactions revealed by X-ray photoelectron spectroscopy (XPS) analysis. This research presents a promising and sustainable approach to tackling air pollution using corn cob biochar, providing insight into optimized production methods and its potential application as an effective NO2 adsorbent to improve air quality.
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Affiliation(s)
- Méghane Drané
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Mohamed Zbair
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Samar Hajjar-Garreau
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Ludovic Josien
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Laure Michelin
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Simona Bennici
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Lionel Limousy
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (M.D.); (M.Z.); (S.H.-G.); (L.J.); (L.M.); (S.B.)
- Université de Strasbourg, F-67081 Strasbourg, France
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Chen Y, Wang PM, Chen ZT, Li B. Modulating Charge Transfer Pathways to Enhance Photocatalytic Performance of the Metal-Organic Layer Nanosheet. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46982-46994. [PMID: 37769278 DOI: 10.1021/acsami.3c09985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Two-dimensional metal-organic layer (MOL) nanosheets, as nonhomogeneous catalysts, show better optical activity in the field of photocatalysis due to their unique structural advantages. Current research focuses on how to modify the structure of 2D nanosheets by means of crystal engineering to modulate the intralayer electron transfer pathway and systematically investigate the impacts of size effect and electron transfer pathway on the energy utilization efficiency of crystalline materials. In the present work, a triple lophine-derived ligand was designed and prepared, which exhibits a large π-conjugation system and multiple D-A (D: donor, A: acceptor) electron transfer pathways. 2D MOL constructed with Cd ions can be exfoliated by physical sonication to obtain double-walled 2D MOL nanosheets. Compared with the bulk crystalline material, the 2D nanosheets exhibit better photovoltaic properties. Benefiting from the excellent structural advantages, 2D MOL nanosheets could be used as photocatalysts for a variety of aerobic oxidation reactions under mild conditions (10 W white LED, room temperature), such as the trifluoromethylation of coumarins, the synthesis of benzimidazole derivatives from aromatic diamines and aromatic aldehydes, and the preparation of 2,4,6-triarylpyridine derivatives, all with high conversion rates and selectivity (yield typically greater than 88%). The related results illustrate that the introduction of the photoactive triple-lophine unit into 2D MOL nanosheets can effectively modulate the electron transport mode and enhance energy utilization, which provides a new research idea for the development of nonhomogeneous photocatalysts aimed at the applications of visible light-driven organic conversion.
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Affiliation(s)
- Yuan Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
| | - Peng-Min Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
| | - Zi-Tong Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
| | - Bao Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
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