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Li H, Ding J, Song Z, Ding S, Liu X, Wang F, Shi X, Zhang C. Highly sensitive volatile organic compounds monitoring enabling by silver-nanowire@metal-organic frameworks core-shell heterostructure. Talanta 2024; 280:126713. [PMID: 39167936 DOI: 10.1016/j.talanta.2024.126713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/27/2024] [Accepted: 08/14/2024] [Indexed: 08/23/2024]
Abstract
Metal-organic frameworks (MOFs) hold great promise as advanced chemical sensing materials due to their high surface area and tunable surface chemistry. However, due to the inherent conductivity, building a highly sensitive MOFs-based gas sensor for real-time monitoring hazardous gas operated at room temperature (RT) is still a huge challenge. Herein, an in-situ anchoring strategy is proposed to construct a 1D-0D core-shell heterostructure by integrating silver nanowires (AgNWs) with highly conductivity and Zn-MOF with high specific surface area. The incorporation of AgNWs establishes a highly conductive network architecture to facilitate rapid charge transport while preventing the Zn-MOF nanoparticles from agglomeration, ensuring an effective transmission highway for target gas molecules. Meanwhile, the Zn-MOF nanoparticles induce remarkable absorption capacity and contribute high gas response. By strategically amalgamating the inherent distinctive virtues of the individual components and capitalizing on the synergistic benefits arising from the composite, the sensors hinged upon the refined AgNWs@Zn-MOF (A@Z) heterostructure unveiled remarkable response value of 27 to 20 ppm ethanol at RT, accompanied by a low detection limit of 1 ppm. Moreover, the A@Z sensor further showcases superior selectivity and repeatability. This work offers a fresh standpoint for the fabrication of MOF-based heterostructures, fostering advancements in diverse applications.
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Affiliation(s)
- Hongpeng Li
- College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China.
| | - Jiabao Ding
- College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Zihao Song
- College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Shumei Ding
- College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Xue Liu
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Feihong Wang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Xinlei Shi
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 352001, China.
| | - Chao Zhang
- College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China.
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Marimuthu S, Shankar A, Maduraiveeran G. Ni(OH) 2 nanosheets decorated with FeCoPi on NiO heterostructures: tunable intrinsic electronic structures for improved overall water splitting. Chem Commun (Camb) 2024; 60:1345-1348. [PMID: 38198182 DOI: 10.1039/d3cc04685k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Herein, we demonstrate the rational design of 3-dimensional nickel double hydroxide nanosheets decorated with iron-cobalt phosphide on nickel oxide (Ni(OH)2@FexCo1-xPi|NiO) heterostructures for achieving improved overall water splitting. The as-optimized Ni(OH)2@FexCo1-xPi|NiO heterostructures exhibited an overpotential (η) of ∼133 mV and ∼173 mV at 10 mA cm-2 for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), respectively, in an alkaline electrolyte through a tunable electronic interaction and stabilization of the active Ni(OH)2 and FeCoPi interface.
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Affiliation(s)
- Sundaramoorthy Marimuthu
- Materials Electrochemistry Laboratory, Department of Chemistry, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur - 603 203, Chengalpattu District, Tamil Nadu, India.
| | - Ayyavu Shankar
- Materials Electrochemistry Laboratory, Department of Chemistry, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur - 603 203, Chengalpattu District, Tamil Nadu, India.
| | - Govindhan Maduraiveeran
- Materials Electrochemistry Laboratory, Department of Chemistry, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur - 603 203, Chengalpattu District, Tamil Nadu, India.
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