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Cao Y, Li L, Yu X, Tahir M, Xiang Z, Kong W, Lu Z, Xing X, Song Y. Engineering Vacancies at the 2D Nanocrystals for Robust Bifunctional Electrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2022; 14:56725-56734. [PMID: 36524589 DOI: 10.1021/acsami.2c15955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) through water decomposition are feasible methods to produce green and clean energy. Herein, we report a facile two-step strategy for the preparation of non-noble metal defect-rich nanosheets by an electrochemical process at room temperature. First-principle calculations are used to study the bifunctional catalytic reaction mechanism of defect engineering in transition-metal dichalcogenides (TMDs); from the first-principle calculations, we predicted that the rich S vacancies on the nanosheet promoted electron transfer and reduced the energy barrier of electrocatalysis. As a substantiation, we conducted HER/OER electrochemical characterizations and found that the defect-rich atomic-thick tantalum sulfide is a kind of dual-function electrocatalyst with enhanced comprehensive properties of Tafel slope (39 mV/dec for HER, 38 mV/dec for OER) and low overpotential (0.099 V for HER, 0.153 V for OER) in acidic and alkaline environments, respectively. Likewise, the defect-rich catalysts exhibit high stability in acidic and alkaline solutions, which have potential applications as electrocatalysts for the large-scale production of hydrogen and oxygen.
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Affiliation(s)
- Yawei Cao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing100083, P. R. China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Lihong Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan430074, P. R. China
| | - Xiaoxia Yu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing100083, P. R. China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Muhammad Tahir
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Zhongyuan Xiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
- School of Chemical Science, University of Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Wei Kong
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing100083, P. R. China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Zehua Lu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing100083, P. R. China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Xianran Xing
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing100083, P. R. China
| | - Yanlin Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
- School of Chemical Science, University of Chinese Academy of Sciences, Beijing100049, P. R. China
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Liu Y, Yu HZ, Wang Y, Tian G, Zhou L, Cordoba de Torresi S, Ozoemena KI, Yang XY. Hierarchically Fractal Co with Highly Exposed Active Facets and Directed Electron-Transfer Effect. Chem Commun (Camb) 2022; 58:6882-6885. [DOI: 10.1039/d2cc02141b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hierarchically fractal Co with highly exposed active (002) facets, possessing higher work function and more moderate hygrogen adsorption free energy, has been synthesized via template-free self-assembly method for directed electron-transfer...
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Najafi L, Bellani S, Oropesa-Nuñez R, Brescia R, Prato M, Pasquale L, Demirci C, Drago F, Martín-García B, Luxa J, Manna L, Sofer Z, Bonaccorso F. Microwave-Induced Structural Engineering and Pt Trapping in 6R-TaS 2 for the Hydrogen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003372. [PMID: 33225597 DOI: 10.1002/smll.202003372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 10/03/2020] [Indexed: 06/11/2023]
Abstract
The nanoengineering of the structure of transition metal dichalcogenides (TMDs) is widely pursued to develop viable catalysts for the hydrogen evolution reaction (HER) alternative to the precious metallic ones. Metallic group-5 TMDs have been demonstrated to be effective catalysts for the HER in acidic media, making affordable real proton exchange membrane water electrolysers. Their key-plus relies on the fact that both their basal planes and edges are catalytically active for the HER. In this work, the 6R phase of TaS2 is "rediscovered" and engineered. A liquid-phase microwave treatment is used to modify the structural properties of the 6R-TaS2 nanoflakes produced by liquid-phase exfoliation. The fragmentation of the nanoflakes and their evolution from monocrystalline to partly polycrystalline structures improve the HER-activity, lowering the overpotential at cathodic current of 10 mA cm-2 from 0.377 to 0.119 V. Furthermore, 6R-TaS2 nanoflakes act as ideal support to firmly trap Pt species, which achieve a mass activity (MA) up 10 000 A gPt -1 at overpotential of 50 mV (20 000 A gPt -1 at overpotentials of 72 mV), representing a 20-fold increase of the MA of Pt measured for the Pt/C reference, and approaching the state-of-the-art of the Pt mass activity.
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Affiliation(s)
- Leyla Najafi
- Graphene Labs, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
- BeDimensional Spa., via Albisola 121, Genova, 16163, Italy
| | - Sebastiano Bellani
- Graphene Labs, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
- BeDimensional Spa., via Albisola 121, Genova, 16163, Italy
| | - Reinier Oropesa-Nuñez
- BeDimensional Spa., via Albisola 121, Genova, 16163, Italy
- Department of Material Science and Engineering, Solid State Physics, Uppsala University, Uppsala, 75103, Sweden
| | - Rosaria Brescia
- Electron Microscopy Facility, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
| | - Lea Pasquale
- Materials Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
| | - Cansunur Demirci
- NanoChemistry, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
| | - Filippo Drago
- NanoChemistry, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
| | | | - Jan Luxa
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6, 16628, Czech Republic
| | - Liberato Manna
- NanoChemistry, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6, 16628, Czech Republic
| | - Francesco Bonaccorso
- Graphene Labs, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy
- BeDimensional Spa., via Albisola 121, Genova, 16163, Italy
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Wang X, Yang H, Zheng J, Li Y, Peng X, Qiao L, Wang Z, Wang Q, Han J, Xiao W. Controllable growth of transition metal dichalcogenide multilayer flakes with kirigami structures. CrystEngComm 2020. [DOI: 10.1039/c9ce01838g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
2D TMDCs with triangular-shaped and hexagonal-shaped kirigami structures are grown on amorphous SiO2 substrates by chemical vapor deposition (CVD).
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