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Wu L, Liu Y, Li Z, Liang J, Geng L, Chen L, Dong Z. Preparation of mesoporous chitosan iron supported nano-catalyst for the catalyzed oxidation of primary amine to imine. RSC Adv 2023; 13:30243-30251. [PMID: 37849706 PMCID: PMC10577645 DOI: 10.1039/d3ra05357a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 09/30/2023] [Indexed: 10/19/2023] Open
Abstract
Supported nano-catalysts with environmental sustainability and high catalytic performance are of great research interest for sustainable catalysis. In this article, a supported nano-catalyst, FeA-NC, with high catalytic performance was prepared by anchoring the transition metal iron onto nitrogen-doped porous carbon materials using chitosan as a raw material. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) measurement results demonstrated that the obtained catalyst has an excellent mesoporous structure, and that the element Fe is evenly distributed. The support contains abundant N atoms, which can provide sufficient anchoring points for Fe and form Fe-Nx groups with Fe, improving the catalytic activity of the catalyst. Additionally, the FeA-NC with a porous structure can also enhance the mass transfer of reactants to improve the reaction efficiency. In addition, the prepared catalyst was used to catalyze the conversion of primary amines to the corresponding imines. The results showed that the direct oxidation of primary amines to the corresponding imines can be catalyzed by using air as an oxygen source and distilled H2O as a solvent under atmospheric pressure at 90 °C. Finally, the selectivity and stability of the as-prepared catalyst were also verified.
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Affiliation(s)
- Lan Wu
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Gansu Provincial Biomass Function Composites Engineering Research Center, Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass, University of Gansu Province Lanzhou 730030 China
| | - Yang Liu
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Gansu Provincial Biomass Function Composites Engineering Research Center, Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass, University of Gansu Province Lanzhou 730030 China
| | - Zhenhua Li
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Gansu Provincial Biomass Function Composites Engineering Research Center, Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass, University of Gansu Province Lanzhou 730030 China
| | - Jinhua Liang
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 PR China
| | - Lei Geng
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Li Chen
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Zhengping Dong
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 PR China
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Xia Y, Zhu B, Li L, Ho W, Wu J, Chen H, Yu J. Single-Atom Engineering of Covalent Organic Framework for Photocatalytic H 2 Production Coupled with Benzylamine Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301928. [PMID: 37104825 DOI: 10.1002/smll.202301928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/27/2023] [Indexed: 06/19/2023]
Abstract
In photocatalysis, reducing the exciton binding energy and boosting the conversion of excitons into free charge carriers are vital to enhance photocatalytic activity. This work presents a facile strategy of engineering Pt single atoms on a 2D hydrazone-based covalent organic framework (TCOF) to promote H2 production coupled with selective oxidation of benzylamine. The optimised TCOF-Pt SA photocatalyst with 3 wt% Pt single atom exhibited superior performance to TCOF and TCOF-supported Pt nanoparticle catalysts. The production rates of H2 and N-benzylidenebenzylamine over TCOF-Pt SA3 are 12.6 and 10.9 times higher than those over TCOF, respectively. Empirical characterisation and theoretical simulation showed that the atomically dispersed Pt is stabilised on the TCOF support through the coordinated N1 -Pt-C2 sites, thereby induing the local polarization and improving the dielectric constant to reach the low exciton binding energy. These phenomena led to the promotion of exciton dissociation into electrons and holes and the acceleration of the separation and transport of photoexcited charge carriers from bulk to the surface. This work provides new insights into the regulation of exciton effect for the design of advanced polymer photocatalysts.
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Affiliation(s)
- Yang Xia
- Department of Science and Environmental Studies and the Centre for Environment and Sustainable Development (CESD), The Education University of Hong Kong, Tai Po, New Territories, Hong Kong, 999077, P. R. China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
| | - Liuyi Li
- Key Laboratory of Eco-materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
| | - Wingkei Ho
- Department of Science and Environmental Studies and the Centre for Environment and Sustainable Development (CESD), The Education University of Hong Kong, Tai Po, New Territories, Hong Kong, 999077, P. R. China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Jinsong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Haoming Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
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Yin T, Ye Y, Dong W, Jie G. Electrochemiluminescence resonance energy transfer biosensing platform between g-C 3N 4 nanosheet and Ru-SiO 2@FA for dual-wavelength ratiometric detection of SARS-CoV-2 RdRp gene. Biosens Bioelectron 2022; 215:114580. [PMID: 35917609 PMCID: PMC9299981 DOI: 10.1016/j.bios.2022.114580] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/15/2022] [Accepted: 07/17/2022] [Indexed: 01/31/2023]
Abstract
Rational detection of syndrome coronavirus 2 (SARS-CoV-2) is crucial to prevention, control, and treatment of disease. Herein, a dual-wavelength ratiometric electrochemiluminescence (ECL) biosensor based on resonance energy transfer (RET) between g-C3N4 nanosheets and Ru-SiO2@folic acid (FA) nanomaterials was designed to realize ultrasensitive detection of SARS-CoV-2 virus (RdRp gene). Firstly, the unique g-C3N4 nanosheets displayed very intense and stable ECL at 460 nm, then the triple helix DNA was stably and vertically bound to g-C3N4 on electrode by high binding affinity between ssDNA and g-C3N4. Meanwhile, trace amounts of target genes were converted to a large number of output by three-dimensional (3D) DNA walker multiple amplification, and the output bridged a multifunctional probe Ru-SiO2@FA to electrode. Ru-SiO2@FA not only showed high ECL at 620 nm, but also effectively quenched g-C3N4 ECL. As a result, ECL decreased at 460 nm and increased at 620 nm, which was used to design a rational ECL biosensor for detection of SARS gene. The results show that the biosensor has excellent detection sensitivity for RdRp gene with a dynamic detection range of 1 fM to 10 nM and a limit of detection (LOD) of 0.18 fM. The dual-wavelength ratio ECL biosensor has inestimable value and application prospects in the fields of biosensing and clinical diagnosis.
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