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de Mello Rodrigues MR, Ferreira RM, dos Santos Pereira F, Anchieta e Silva F, Silva ACA, Vitorino HA, Júnior JDJGV, Tanaka AA, Garcia MAS, Rodrigues TS. Application of AgPt Nanoshells in Direct Methanol Fuel Cells: Experimental and Theoretical Insights of Design Electrocatalysts over Methanol Crossover Effect. ChemCatChem 2022. [DOI: 10.1002/cctc.202200605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Felipe Anchieta e Silva
- UFRJ: Universidade Federal do Rio de Janeiro Programa de Engenharia da Nanotecnologia BRAZIL
| | | | - Hector Aguilar Vitorino
- Universidad Norbert Wiener South American Center for Education and Research in Public Health Lima PERU
| | | | | | | | - Thenner Silva Rodrigues
- Universidade Federal do Rio de Janeiro Programa de Engenharia da Nanotecnologia v. Horácio Macedo, 2030 21.941-972 Rio de Janeiro BRAZIL
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Filatov E, Smirnov P, Potemkin D, Pishchur D, Kryuchkova N, Plyusnin P, Korenev S. Formation of Catalytically Active Nanoparticles under Thermolysis of Silver Chloroplatinate(II) and Chloroplatinate(IV). Molecules 2022; 27:molecules27041173. [PMID: 35208959 PMCID: PMC8875358 DOI: 10.3390/molecules27041173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/29/2022] [Accepted: 02/08/2022] [Indexed: 12/10/2022] Open
Abstract
The thermal behaviour of Ag2[PtCl4] and Ag2[PtCl6] complex salts in inert and reducing atmospheres has been studied. The thermolysis of compounds in a helium atmosphere is shown to occur in two stages. At the first stage, the complexes decompose in the temperature range of 350–500 °C with the formation of platinum and silver chloride and the release of chlorine gas. At the second stage, silver chloride is sublimated in the temperature range of 700–900 °C, while metallic platinum remains in the solid phase. In contrast to the thermolysis of Ag2[PtCl6], the thermal decomposition of Ag2[PtCl4] at 350 °C is accompanied by significant heat release, which is associated with disproportionation of the initial salt to Ag2[PtCl6], silver chloride, and platinum metal. It is confirmed by DSC measurements, DFT calculations of a suggested reaction, and XRD. The thermolysis of Ag2[PtCl4] and Ag2[PtCl6] compounds is shown to occur in a hydrogen atmosphere in two poorly separable steps. The compounds are decomposed within 170–350 °C, and silver and platinum are reduced to a metallic state, while a metastable single-phase solid solution of Ag0.67Pt0.33 is formed. The catalytic activity of the resulting nanoalloy Ag0.67Pt0.33 is studied in the reaction of CO total (TOX) and preferential (PROX) oxidation. Ag0.67Pt0.33 enhanced Pt nano-powder activity in CO TOX, but was not selective in CO PROX.
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Affiliation(s)
- Evgeny Filatov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
- Correspondence:
| | - Pavel Smirnov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia;
| | - Dmitry Potemkin
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia;
- Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Denis Pishchur
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
| | - Natalya Kryuchkova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
| | - Pavel Plyusnin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
| | - Sergey Korenev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (P.S.); (D.P.); (N.K.); (P.P.); (S.K.)
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Anand S, Pinheiro D, Sunaja Devi KR. Recent Advances in Hydrogenation Reactions Using Bimetallic Nanocatalysts: A Review. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Samika Anand
- Department of Chemistry CHRIST (Deemed to be University) Bangalore 560029 Karnataka India
| | - Dephan Pinheiro
- Department of Chemistry CHRIST (Deemed to be University) Bangalore 560029 Karnataka India
| | - K. R. Sunaja Devi
- Department of Chemistry CHRIST (Deemed to be University) Bangalore 560029 Karnataka India
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Ramli MA, Mawarnis ER, Umar MIA, Rahman MYA, Fauzia V, Nurdin M, Umar AA. Charge transfer uplift in dye-sensitized solar cells using fibrous nanocrystals of platinum-based bimetallic counter electrodes. SURFACES AND INTERFACES 2021; 26:101311. [DOI: 10.1016/j.surfin.2021.101311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Pato AH, Balouch A, Talpur FN, Abdullah, Mahar AM, Shah MT, Kumar A, Fahad, Qasim S, Gabole AA. Synthesis and catalytic practicality of titania@ITO-grown nanoflakes: an excellent candidate for isopropanol conversion to acetone. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01200-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Shi H. Valorization of Biomass‐derived Small Oxygenates: Kinetics, Mechanisms and Site Requirements of H2‐involved Hydrogenation and Deoxygenation Pathways over Heterogeneous Catalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201801828] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hui Shi
- Department of Chemistry, Catalysis Research CenterTechnical University Munich Lichtenbergstrasse 4 85747 Garching Germany
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Meng Y, Gao H, Li S, Chai F, Chen L. Facile fabrication of bimetallic Cu–Ag binary hybrid nanoparticles and their application in catalysis. NEW J CHEM 2019. [DOI: 10.1039/c9nj00816k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Herein, high efficiency and recyclable Cu–Ag hybrid catalyst (Trp–Cu–Ag) NPs were prepared by the hydrothermal method using l-tryptophan as a reducing agent and protecting reagent.
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Affiliation(s)
- Yuxi Meng
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials
- Heilongjiang Province; Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
| | - Hanyu Gao
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials
- Heilongjiang Province; Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
| | - Shuang Li
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials
- Heilongjiang Province; Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
| | - Fang Chai
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials
- Heilongjiang Province; Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
| | - Lihua Chen
- Shandong Key Laboratory of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
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Ramli MA, Saad SKM, Mawarnis ER, Umar MIA, Menon PS, Rahman MYA, Ali Umar A. Facile charge transfer in fibrous PdPt bimetallic nanocube counter electrodes. NEW J CHEM 2019. [DOI: 10.1039/c9nj01673b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhanced charge transfer is realized in DSSCs that utilize poriferous PdPt bimetallic nanocubes as the counter electrode.
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Affiliation(s)
- Muhamad Adam Ramli
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Siti Khatijah Md Saad
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Elvy Rahmi Mawarnis
- Department of Chemistry Education
- Faculty of Tarbiyah
- Institut Agama Islam Negeri (IAIN)
- 27213 Batusangkar
- Indonesia
| | - Marjoni Imamora Ali Umar
- Department of Physics Education
- Faculty of Tarbiyah
- Institut Agama Islam Negeri (IAIN)
- 27213 Batusangkar
- Indonesia
| | - P. Susthitha Menon
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Mohd Yusri Abd Rahman
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Akrajas Ali Umar
- Institute of Microengineering and Nanoelectronics
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
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