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Shah SJ, Luan X, Yu X, Su W, Wang Y, Zhao Z, Zhao Z. Construction of 3D-graphene/NH 2-MIL-125 nanohybrids via amino-ionic liquid dual-mode bonding for advanced acetaldehyde photodegradation under high humidity. J Colloid Interface Sci 2024; 663:491-507. [PMID: 38422975 DOI: 10.1016/j.jcis.2024.02.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
The development of metal organic framework (MOF)-based π-π conjugated structures capable of effectively transforming H2O from humid air to •OH radicals for VOCs photodegradation is a significant but difficult task. Herein, an amino-ionic liquid (NH2-IL) based dual-mode bridging strategy was proposed to connect 3D-graphene with NH2-MIL-125 forming IL-3DGr/NM(Ti) nanohybrids for advanced acetaldehyde photodegradation. The rational integration of these components was responsible for: (1) maintaining π-π conjugated electron transport system; (2) generating abundant coordinatively unsaturated sites and oxygen vacancies; (3) increasing surface area of the nanohybrids. With these attributes, IL-3DGr/NM(Ti) demonstrated enhanced charge separation and transportation electrochemical impedance spectroscopy (EIS): 7-times), acetaldehyde adsorption (22 %), light absorption (bandgap: 1.51 eV). The rapid H2O adsorption and photoconversion to •OH radicals by IL-3DGr/NM(Ti) enabled it to demonstrate superior CH3CHO photodegradation rate under high humidity, surpassing many state-of-the-art photocatalysts by 9 to 187 times under static air conditions and with nearly similar catalyst dosages* (photocatalyst weight and initial acetaldehyde concentration (mg ppm-1) ratio). Interestingly, the IL-3DGr/NM(Ti) photocatalytic activity was enhanced by increasing RH% up-to 80 %. Besides, the nanohybrids demonstrated tremendous stability, with only a 3.9 % decline observed after 5 consecutive-cycles. This strategy provides new prospects to improve the compatibility of graphene/MOF materials for futuristic photoelectrical applications under high humidity.
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Affiliation(s)
- Syed Jalil Shah
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China; School of Medicine and Health, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, Henan 450000, China
| | - Xinqi Luan
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China
| | - Xin Yu
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China
| | - Weige Su
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China
| | - Yucheng Wang
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China
| | - Zhongxing Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China
| | - Zhenxia Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning 530004, China.
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