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Katiyar NK, Dhakar S, Parui A, Gakhad P, Singh AK, Biswas K, Tiwary CS, Sharma S. Electrooxidation of Hydrazine Utilizing High-Entropy Alloys: Assisting the Oxygen Evolution Reaction at the Thermodynamic Voltage. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03571] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nirmal Kumar Katiyar
- Departmental of Materials Science and Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh208016, India
- School of Engineering, London South Bank University, 103 Borough Road, London SE10 AA, U.K
| | - Shikha Dhakar
- Department of Chemistry, Indian Institute of Technology, Gandhinagar, Gujarat 382355, India
| | - Arko Parui
- Materials Research Centre, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Pooja Gakhad
- Materials Research Centre, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Abhishek Kumar Singh
- Materials Research Centre, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Krishanu Biswas
- Departmental of Materials Science and Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh208016, India
| | - Chandra Sekhar Tiwary
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Sudhanshu Sharma
- Department of Chemistry, Indian Institute of Technology, Gandhinagar, Gujarat 382355, India
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Affiliation(s)
- Diab Khalafallah
- State Key Laboratory of Silicon Material School of Materials Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P.R. China
- Mechanical Design and Materials Department Faculty of Energy Engineering Aswan University P.O. Box 81521 Aswan Egypt
| | - Mingjia Zhi
- State Key Laboratory of Silicon Material School of Materials Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P.R. China
| | - Zhanglian Hong
- State Key Laboratory of Silicon Material School of Materials Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P.R. China
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Gao L, Xie J, Liu S, Lou S, Wei Z, Zhu X, Tang B. Crystalline Cobalt/Amorphous LaCoO x Hybrid Nanoparticles Embedded in Porous Nitrogen-Doped Carbon as Efficient Electrocatalysts for Hydrazine-Assisted Hydrogen Production. ACS Appl Mater Interfaces 2020; 12:24701-24709. [PMID: 32374148 DOI: 10.1021/acsami.0c02124] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hydrazine electro-oxidation has received substantial attention owing to its high energy density, low onset potential, and wide applications in hydrazine-assisted hydrogen production and direct hydrazine fuel cells. In this work, crystalline cobalt/amorphous LaCoOx hybrid nanoparticles embedded in porous nitrogen-doped carbon (N-C) were fabricated via pyrolytic decomposition of the dual-metal lanthanum-incorporated zeolitic imidazolate framework (La/ZIF-67), which exhibit high activity and stability toward the electrocatalytic hydrazine oxidation reaction (HzOR). The hybrid nanoparticles based on metallic cobalt and amorphous LaCoOx could provide abundant active sites for HzOR catalysis, while the highly conductive and porous N-C could act as both robust skeleton for anchoring the active hybrid nanoparticles and facile charge transport pathway for the HzOR process, thereby resulting in enhanced HzOR activity. With the synergistic merits of enriched active sites, a large surface area, enhanced charge-transfer ability, and intimate catalyst anchoring, promoted HzOR performance with high activity and stability was achieved for the optimized catalyst, which shows an ultralow onset potential of -0.17 V versus reversible hydrogen electrode (RHE), high HzOR current density of 69.2 mA cm-2 at 0.3 V versus RHE, and superior stability for 20 h continuous catalysis, making the catalyst a promising electrode material for hydrazine-assisted hydrogen production.
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Affiliation(s)
- Li Gao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes (Ministry of Education), Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan, Shandong 250014, P. R. China
| | - Junfeng Xie
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes (Ministry of Education), Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan, Shandong 250014, P. R. China
| | - Shanshan Liu
- College of Chemical Engineering and Safety, Binzhou University, Binzhou, Shandong 256603, P. R. China
| | - Shanshan Lou
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes (Ministry of Education), Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan, Shandong 250014, P. R. China
| | - Zimeng Wei
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes (Ministry of Education), Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan, Shandong 250014, P. R. China
| | - Xiaojiao Zhu
- College of Chemistry and Chemical Engineering, Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University) Ministry of Education, Anhui University, Hefei, Anhui 230601, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes (Ministry of Education), Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan, Shandong 250014, P. R. China
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Firdous N, Janjua NK. CoPt x/γ-Al 2O 3 bimetallic nanoalloys as promising catalysts for hydrazine electrooxidation. Heliyon 2019; 5:e01380. [PMID: 30957051 PMCID: PMC6431748 DOI: 10.1016/j.heliyon.2019.e01380] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 10/16/2018] [Accepted: 03/13/2019] [Indexed: 11/17/2022] Open
Abstract
Stable bimetallic catalysts composed of CoPtx/γ-Al2O3 (x = Pt/Co molar ratio) were synthesized by wet impregnation method followed by calcination and the H2 reduction. The powders were characterized using XRD, AAS, BET, SEM, EDX, TPR, and TPO techniques. The prepared catalysts were drop casted on the glassy carbon electrode (GCE) and catalytic performance was examined for hydrazine electrooxidation in alkaline medium via cyclic voltammetry (CV). All the compositions in CoPtx/γ-Al2O3 series showed high responses towards hydrazine electrooxidation, however; high activity of CoPt0.034/γ-Al2O3 catalyst inferred it as a best material with an anodic peak current (iP) response of 200 μA at 0.86 V. The prominent electrochemical (EC) responses for this composition are attributed to better accessible surface area resulting in a fast electron transfer. The CoPtx/γ-Al2O3 catalysts are reported as the robust and superior prospective materials for extensive electroanalytical and catalytic studies.
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