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Cardoso ESF, Fortunato GV, Rodrigues CD, Lanza MRV, Maia G. Exploring the Potential of Heteroatom-Doped Graphene Nanoribbons as a Catalyst for Oxygen Reduction. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2831. [PMID: 37947677 PMCID: PMC10650208 DOI: 10.3390/nano13212831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 11/12/2023]
Abstract
In this study, we created a series of N, S, and P-doped and co-doped carbon catalysts using a single graphene nanoribbon (GNR) matrix and thoroughly evaluated the impact of doping on ORR activity and selectivity in acidic, neutral, and alkaline conditions. The results obtained showed no significant changes in the GNR structure after the doping process, though changes were observed in the surface chemistry in view of the heteroatom insertion and oxygen depletion. Of all the dopants investigated, nitrogen (mainly in the form of pyrrolic-N and graphitic-N) was the most easily inserted and detected in the carbon matrix. The electrochemical analyses conducted showed that doping impacted the performance of the catalyst in ORR through changes in the chemical composition of the catalyst, as well as in the double-layer capacitance and electrochemically accessible surface area. In terms of selectivity, GNR doped with phosphorus and sulfur favored the 2e- ORR pathway, while nitrogen favored the 4e- ORR pathway. These findings can provide useful insights into the design of more efficient and versatile catalytic materials for ORR in different electrolyte solutions, based on functionalized carbon.
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Grants
- grants #465571/2014-0, #302874/2017-8, #427452/2018-0, #303351/2018-7, #405742/2018-5, #380886/2020-0, #303943/2021-1, #302561/2022-6, # 151161/2023-2 National Council for Scientific and Technological Development
- grants #71/020.168/2021, #71/027.195/2022 and #71/039.199/2022 Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
- PrInt grant #88881.311799/2018-01, PNPD-CAPES, and CAPES - Finance Code 001 Coordenação de Aperfeicoamento de Pessoal de Nível Superior
- grants 2014/50945-4, 2017/10118-0, #2019/04421-7, and #2023/01425-7 São Paulo Research Foundation
- grant # 2023/10772-2 São Paulo Research Foundation
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Affiliation(s)
- Eduardo S. F. Cardoso
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller 1555, Campo Grande 79074-460, MS, Brazil;
| | - Guilherme V. Fortunato
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos 13566-590, SP, Brazil; (G.V.F.); (M.R.V.L.)
| | - Clauber D. Rodrigues
- Campus Glória de Dourados, State University of Mato Grosso do Sul, Rua Rogério Luis Rodrigues s/n, Glória de Dourados 79730-000, MS, Brazil;
| | - Marcos R. V. Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos 13566-590, SP, Brazil; (G.V.F.); (M.R.V.L.)
| | - Gilberto Maia
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Av. Senador Filinto Muller 1555, Campo Grande 79074-460, MS, Brazil;
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N-Doped and Sulfonated Reduced Graphene Oxide Supported PtNi Nanoparticles as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction. COATINGS 2022. [DOI: 10.3390/coatings12081049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
N-doping and sulfonation is prepared on the reduced graphene oxide (rGO) support for PtNi nanoparticles (PtNi/S-(N)rGO) by a simple method of hydrothermal synthesis and thermal decomposition. The specific surface area increases from 180.7 m2/g of PtNi/rGo to 293.5 m2/g of PtNi/S-(N)rGO. The surface morphology shows wrinkles sites, which are separated by the sulfonated groups. The catalytic stability and efficiency are improved by the anchoring effect of sulfonated groups and evenly distribution of nanoparticles, respectively. The synergistic effect of N-doping and sulfonation can be in favor of catalytic efficiency by the increase of number of electron transfer. The half-wave potential of the PtNi/S-(N)rGO catalyst is up to 0.632 V, a small positive shift compared to the Pt/C catalyst. The durability of the PtNi/S-(N)rGO is 2.6 times higher than of the Pt/C catalyst after 5000 repeated cycles. The peak power of the PtNi/S-(N)rGO catalyst increased 37.5% compared to the Pt/C catalyst. Therefore, the stability and catalytic efficiency are improved by the PtNi/S-(N)rGO catalyst applied in proton exchange membrane fuel cell (PEMFC) compared to the commercial Pt/C catalyst.
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Fortunato GV, Bezerra LS, Cardoso ESF, Kronka MS, Santos AJ, Greco AS, Júnior JLR, Lanza MRV, Maia G. Using Palladium and Gold Palladium Nanoparticles Decorated with Molybdenum Oxide for Versatile Hydrogen Peroxide Electroproduction on Graphene Nanoribbons. ACS APPLIED MATERIALS & INTERFACES 2022; 14:6777-6793. [PMID: 35080174 DOI: 10.1021/acsami.1c22362] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Electrocatalytic production of H2O2 via a two-electron oxygen reduction reaction (ORR-2e-) is regarded as a highly promising decentralized and environmentally friendly mechanism for the production of this important chemical commodity. However, the underlying challenges related to the development of catalytic materials that contain zero or low content of noble metals and that are relatively more active, selective, and resistant for long-term use have become a huge obstacle for the electroproduction of H2O2 on commercial and industrial scales. The present study reports the synthesis and characterization of low metal-loaded (≤6.4 wt %) catalysts and their efficiency in H2O2 electroproduction. The catalysts were constructed using gold palladium molybdenum oxide (AuPdMoOx) and palladium molybdenum oxide (PdMoOx) nanoparticles supported on graphene nanoribbons. Based on the application of a rotating ring-disk electrode, we conducted a thorough comparative analysis of the electrocatalytic performance of the catalysts in the ORR under acidic and alkaline media. The proposed catalysts exhibited high catalytic activity (ca. 0.08 mA gnoble metal-1 in an acidic medium and ca. 6.6 mA gnoble metal-1 in an alkaline medium), good selectivity (over 80%), and improved long-term stability toward ORR-2e-. The results obtained showed that the enhanced ORR activity presented by the catalysts, which occurred preferentially via the two-electron pathway, was promoted by a combination of factors including geometry, Pd content, interparticle distance, and site-blocking effects, while the electrochemical stability of the catalysts may have been enhanced by the presence of MoOx.
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Affiliation(s)
- Guilherme V Fortunato
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
- Institute of Chemistry, Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555; Campo Grande, MS 79074-460, Brazil
| | - Leticia S Bezerra
- Institute of Chemistry, Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555; Campo Grande, MS 79074-460, Brazil
| | - Eduardo S F Cardoso
- Institute of Chemistry, Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555; Campo Grande, MS 79074-460, Brazil
| | - Matheus S Kronka
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Alexsandro J Santos
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Anderson S Greco
- Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Highway Dourados-Itahum, km 12, Dourados, MS 79804-970, Brazil
| | - Jorge L R Júnior
- Institute of Chemistry, Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555; Campo Grande, MS 79074-460, Brazil
| | - Marcos R V Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Gilberto Maia
- Institute of Chemistry, Federal University of Mato Grosso do Sul; Av. Senador Filinto Muller, 1555; Campo Grande, MS 79074-460, Brazil
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Zhang B, Zhang X, Yan J, Cao Z, Pang M, Chen J, Zang L, Guo P. Synthesis of Free‐Standing Alloyed PdSn Nanoparticles with Enhanced Catalytic Performance for Ethanol Electrooxidation. ChemElectroChem 2021. [DOI: 10.1002/celc.202101242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ben Zhang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Xingxue Zhang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Jie Yan
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Zhengshuai Cao
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Mingyuan Pang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Jianyu Chen
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Lei Zang
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment College of Materials Science and Engineering Qingdao University Qingdao 266071 PR China
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Tellez-Cruz MM, Escorihuela J, Solorza-Feria O, Compañ V. Proton Exchange Membrane Fuel Cells (PEMFCs): Advances and Challenges. Polymers (Basel) 2021; 13:3064. [PMID: 34577965 PMCID: PMC8468942 DOI: 10.3390/polym13183064] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/21/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022] Open
Abstract
The study of the electrochemical catalyst conversion of renewable electricity and carbon oxides into chemical fuels attracts a great deal of attention by different researchers. The main role of this process is in mitigating the worldwide energy crisis through a closed technological carbon cycle, where chemical fuels, such as hydrogen, are stored and reconverted to electricity via electrochemical reaction processes in fuel cells. The scientific community focuses its efforts on the development of high-performance polymeric membranes together with nanomaterials with high catalytic activity and stability in order to reduce the platinum group metal applied as a cathode to build stacks of proton exchange membrane fuel cells (PEMFCs) to work at low and moderate temperatures. The design of new conductive membranes and nanoparticles (NPs) whose morphology directly affects their catalytic properties is of utmost importance. Nanoparticle morphologies, like cubes, octahedrons, icosahedrons, bipyramids, plates, and polyhedrons, among others, are widely studied for catalysis applications. The recent progress around the high catalytic activity has focused on the stabilizing agents and their potential impact on nanomaterial synthesis to induce changes in the morphology of NPs.
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Affiliation(s)
- Miriam M. Tellez-Cruz
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. IPN 2508, Ciudad de México 07360, Mexico; (M.M.T.-C.); (O.S.-F.)
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, Burjassot, 46100 Valencia, Spain
| | - Omar Solorza-Feria
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. IPN 2508, Ciudad de México 07360, Mexico; (M.M.T.-C.); (O.S.-F.)
| | - Vicente Compañ
- Departamento de Termodinámica Aplicada (ETSII), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
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Martini BK, Maia G. Using a combination of Co, Mo, and Pt oxides along with graphene nanoribbon and MoSe2 as efficient catalysts for OER and HER. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138907] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Sahu A, Mondal K, Pala RG. Activated Porous Highly Enriched Platinum and Palladium Electrocatalysts from Dealloyed Noncrystalline Alloys for Enhanced Hydrogen Evolution. ChemElectroChem 2020. [DOI: 10.1002/celc.202001230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Arti Sahu
- Department of Chemical Engineering Indian Institute of Technology Kanpur 208016 India
| | - Kallol Mondal
- Department of Material Science and Engineering Indian Institute of Technology Kanpur 208016 India
| | - Raj Ganesh Pala
- Department of Chemical Engineering Indian Institute of Technology Kanpur 208016 India
- Materials Science Programme Indian Institute of Technology Kanpur 208016 India
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