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Xu H, Chen J, Zhang Z, Hung CT, Yang J, Li W. In Situ Confinement of Ultrasmall Metal Nanoparticles in Short Mesochannels for Durable Electrocatalytic Nitrate Reduction with High Efficiency and Selectivity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207522. [PMID: 36408927 DOI: 10.1002/adma.202207522] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Electrocatalytic reduction is a sustainable approach for NO3 - removal and high-value N-containing compounds manufacturing, which, however, is strongly obstructed by sluggish kinetics, low selectivity, and poor stability. Herein, the in situ confinement of ultrasmall CuPd alloy nanoparticles in mesochannels of conductive core-shell structured carbon nanotubes@mesoporous carbon substrates (CNTs@mesoC@CuPd) via a simple molecule-mediated interfacial assembly method is reported. As a catalyst for electrocatalytic NO3 - reduction, the CNTs@mesoC@CuPd shows a splendid conversion efficiency (100%), N2 selectivity (98%), cycling stability (>30 days), and removal capacity as high as 30 000 mg N g-1 CuPd, which are much superior to most of the prior reports. Notably, experimental (in situ testing and isotopic labeling) and theoretical results unveil that bimetallic and monometallic catalysts for electrocatalytic NO3 - reduction exhibit exclusive selectivity for N2 and NH3 , respectively. This in situ confinement strategy is universal for the synthesis of stable and highly accessible metallic catalysts, which opens an appealing way to synthesize advanced catalysts with high activity, selectivity, and stability.
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Affiliation(s)
- Hui Xu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Junliang Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Zhenghao Zhang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
| | - Chin-Te Hung
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Wei Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
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Shen W, Jin J, Hu Y, Hou Y, Yin J, Ma Z, Zhao YQ, Xi P. Surface chlorine doped perovskite-type cobaltate lanthanum for water oxidation. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)64004-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Electrocatalysis is an indispensable technique for small-molecule transformations, which are essential for the sustainability of society. Electrocatalysis utilizes electricity as an energy source for chemical reactions. Hydrogen is considered the “fuel for the future,” and designing electrocatalysts for hydrogen production has thus become critical. Furthermore, fuel cells are promising energy solutions that require robust electrocatalysts for key fuel cell reactions such as the interconversion of oxygen to water. Concerns regarding the rising concentration of atmospheric carbon dioxide have prompted the search for CO2 conversion methods. One promising approach is the electrochemical conversion of CO2 into commodity chemicals and/or liquid fuels, but such chemistry is highly energy demanding because of the thermodynamic stability of CO2. All of the above-mentioned electrocatalytic processes rely on the selective input of multiple protons (H+) and electrons (e–) to yield the desired products. Biological enzymes evolved in nature to perform such redox catalysis and have inspired the design of catalysts at the molecular and atomic levels. While it is synthetically challenging to mimic the exact biological environment, incorporating functional outer coordination spheres into molecular catalysts has shown promise for advancing multi-H+ and multi-e– electrocatalysis. From this Perspective, herein, catalysts with outer coordination sphere(s) are selected as the inspiration for developing new catalysts, particularly for the reductive conversion of H+, O2, and CO2, which are highly relevant to sustainability. The recent progress in electrocatalysis and opportunities to explore beyond the second coordination sphere are also emphasized.
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Affiliation(s)
- Soumalya Sinha
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, USA
| | - Caroline K Williams
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, USA
| | - Jianbing Jimmy Jiang
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, USA
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Liu C, Geer AM, Webber C, Musgrave CB, Gu S, Johnson G, Dickie DA, Chabbra S, Schnegg A, Zhou H, Sun CJ, Hwang S, Goddard WA, Zhang S, Gunnoe TB. Immobilization of “Capping Arene” Cobalt(II) Complexes on Ordered Mesoporous Carbon for Electrocatalytic Water Oxidation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chang Liu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Ana M. Geer
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Christopher Webber
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Charles B. Musgrave
- Materials and Process Simulation Center, Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
| | - Shunyan Gu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Grayson Johnson
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Sonia Chabbra
- EPR Research Group, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Alexander Schnegg
- EPR Research Group, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Hua Zhou
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Cheng-Jun Sun
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Sooyeon Hwang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - William A. Goddard
- Materials and Process Simulation Center, Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
| | - Sen Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - T. Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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