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Fernández-Lodeiro A, Lodeiro JF, Losada-Garcia N, Nuti S, Capelo-Martinez JL, Palomo JM, Lodeiro C. Copper(i) as a reducing agent for the synthesis of bimetallic PtCu catalytic nanoparticles. NANOSCALE ADVANCES 2023; 5:4415-4423. [PMID: 37638153 PMCID: PMC10448313 DOI: 10.1039/d3na00158j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 07/20/2023] [Indexed: 08/29/2023]
Abstract
This work investigates the potential utilization of Cu(i) as a reducing agent for the transformation of the platinum salt K2PtCl4, resulting in the production of stable nanoparticles. The synthesized nanoparticles exhibit a bimetallic composition, incorporating copper within their final structure. This approach offers a convenient and accessible methodology for the production of bimetallic nanostructures. The catalytic properties of these novel nanomaterials have been explored in various applications, including their use as artificial metalloenzymes and in the degradation of dyes. The findings underscore the significant potential of Cu(i)-mediated reduction in the development of functional nanomaterials with diverse catalytic applications.
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Affiliation(s)
- Adrián Fernández-Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon Caparica Campus Caparica 2829-516 Portugal
- PROTEOMASS Scientific Society, BIOSCOPE GROUP Laboratories Departmental Building, Ground Floor, FCT-UNL Caparica Campus 2829-516 Caparica Portugal
| | - Javier Fernández Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon Caparica Campus Caparica 2829-516 Portugal
- PROTEOMASS Scientific Society, BIOSCOPE GROUP Laboratories Departmental Building, Ground Floor, FCT-UNL Caparica Campus 2829-516 Caparica Portugal
| | - Noelia Losada-Garcia
- Instituto de Catálisis y Petroleoquímica (ICP), CSIC Marie Curie 2 Madrid 28049 Spain
| | - Silvia Nuti
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon Caparica Campus Caparica 2829-516 Portugal
- PROTEOMASS Scientific Society, BIOSCOPE GROUP Laboratories Departmental Building, Ground Floor, FCT-UNL Caparica Campus 2829-516 Caparica Portugal
| | - José Luis Capelo-Martinez
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon Caparica Campus Caparica 2829-516 Portugal
- PROTEOMASS Scientific Society, BIOSCOPE GROUP Laboratories Departmental Building, Ground Floor, FCT-UNL Caparica Campus 2829-516 Caparica Portugal
| | - Jose M Palomo
- Instituto de Catálisis y Petroleoquímica (ICP), CSIC Marie Curie 2 Madrid 28049 Spain
| | - Carlos Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon Caparica Campus Caparica 2829-516 Portugal
- PROTEOMASS Scientific Society, BIOSCOPE GROUP Laboratories Departmental Building, Ground Floor, FCT-UNL Caparica Campus 2829-516 Caparica Portugal
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Mkhohlakali A, Fuku X, Seo MH, Modibedi M, Khotseng L, Mathe M. Electro-Design of Bimetallic PdTe Electrocatalyst for Ethanol Oxidation: Combined Experimental Approach and Ab Initio Density Functional Theory (DFT)-Based Study. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3607. [PMID: 36296796 PMCID: PMC9610566 DOI: 10.3390/nano12203607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
An alternative electrosynthesis of PdTe, using the electrochemical atomic layer deposition (E-ALD) method, is reported. The cyclic voltammetry technique was used to analyze Au substrate in copper (Cu2+), and a tellurous (Te4+) solution was used to identify UPDs and set the E-ALD cycle program. Results obtained using atomic force microscopy (AFM) and scanning electron microscopy (SEM) techniques reveal the nanometer-sized flat morphology of the systems, indicating the epitaxial characteristics of Pd and PdTe nanofilms. The effect of the Pd:Te ratio on the crystalline structure, electronic properties, and magnetic properties was investigated using a combination of density functional theory (DFT) and X-ray diffraction techniques. Te-containing electrocatalysts showed improved peak current response and negative onset potential toward ethanol oxidation (5 mA; -0.49 V) than Pd (2.0 mA; -0.3 V). Moreover, DFT ab initio calculation results obtained when the effect of Te content on oxygen adsorption was studied revealed that the d-band center shifted relative to the Fermi level: -1.83 eV, -1.98 eV, and -2.14 eV for Pd, Pd3Te, and Pd3Te2, respectively. The results signify the weakening of the CO-like species and the improvement in the PdTe catalytic activity. Thus, the electronic and geometric effects are the descriptors of Pd3Te2 activity. The results suggest that Pd2Te2 is a potential candidate electrocatalyst that can be used for the fabrication of ethanol fuel cells.
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Affiliation(s)
- Andile Mkhohlakali
- Analytical Chemistry Division, Mintek, 200 Malibongwe Drive, Randburg 2194, South Africa
- Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville,
Cape Town 7535, South Africa
| | - Xolile Fuku
- Institute of Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Roodepoort 1710, South Africa
| | - Min Ho Seo
- Department of Nanotechnology Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48547, Korea
| | - Mmalewane Modibedi
- Council for Scientific and Industrial Research (CSIR), Energy Center, Pretoria 0012, South Africa
| | - Lindiwe Khotseng
- Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville,
Cape Town 7535, South Africa
| | - Mkhulu Mathe
- Department of Chemistry, ICES, CSET, University of South Africa, Florida Science Campus, Roodepoort 1710, South Africa
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Cluster core growth upon the decarbonylation of cyclopentadienyl-iron-dicarbonyl ferrocenyltelluride CpFe(CO)2TeFc: Fe1Te1 to Fe3Te3. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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