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Radin E, Štefanić G, Dražić G, Marić I, Jurkin T, Pustak A, Baran N, Raić M, Gotić M. Solid-State Dispersions of Platinum in the SnO 2 and Fe 2O 3 Nanomaterials. NANOMATERIALS 2021; 11:nano11123349. [PMID: 34947698 PMCID: PMC8704069 DOI: 10.3390/nano11123349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/01/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022]
Abstract
The dispersion of platinum (Pt) on metal oxide supports is important for catalytic and gas sensing applications. In this work, we used mechanochemical dispersion and compatible Fe(II) acetate, Sn(II) acetate and Pt(II) acetylacetonate powders to better disperse Pt in Fe2O3 and SnO2. The dispersion of platinum in SnO2 is significantly different from the dispersion of Pt over Fe2O3. Electron microscopy has shown that the elements Sn, O and Pt are homogeneously dispersed in α-SnO2 (cassiterite), indicating the formation of a (Pt,Sn)O2 solid solution. In contrast, platinum is dispersed in α-Fe2O3 (hematite) mainly in the form of isolated Pt nanoparticles despite the oxidative conditions during annealing. The size of the dispersed Pt nanoparticles over α-Fe2O3 can be controlled by changing the experimental conditions and is set to 2.2, 1.2 and 0.8 nm. The rather different Pt dispersion in α-SnO2 and α-Fe2O3 is due to the fact that Pt4+ can be stabilized in the α-SnO2 structure by replacing Sn4+ with Pt4+ in the crystal lattice, while the substitution of Fe3+ with Pt4+ is unfavorable and Pt4+ is mainly expelled from the lattice at the surface of α-Fe2O3 to form isolated platinum nanoparticles.
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Affiliation(s)
- Edi Radin
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Goran Štefanić
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Goran Dražić
- National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
- Correspondence: (G.D.); (M.G.)
| | - Ivan Marić
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (I.M.); (T.J.); (A.P.)
| | - Tanja Jurkin
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (I.M.); (T.J.); (A.P.)
| | - Anđela Pustak
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (I.M.); (T.J.); (A.P.)
| | - Nikola Baran
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Matea Raić
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Marijan Gotić
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
- Correspondence: (G.D.); (M.G.)
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The feasibility of typical metal–organic framework derived Fe, Co, N co-doped carbon as a robust electrocatalyst for oxygen reduction reaction in microbial fuel cell. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136775] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ma X, Wu J, Xu L, Zhao B, Chen F. Modulation of Pt species on oxygen vacancies enriched TiO2 via UV illumination for photocatalytic performance optimization. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Shui H, Jin T, Hu J, Liu H. In Situ Incorporation Strategy for Bimetallic FeCo-Doped Carbon as Highly Efficient Bifunctional Oxygen Electrocatalysts. ChemElectroChem 2018. [DOI: 10.1002/celc.201800013] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hengxin Shui
- State Key Laboratory of Chemistry Engineering and; Department of Chemistry; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Tian Jin
- State Key Laboratory of Chemistry Engineering and; Department of Chemistry; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Jun Hu
- State Key Laboratory of Chemistry Engineering and; Department of Chemistry; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Honglai Liu
- State Key Laboratory of Chemistry Engineering and; Department of Chemistry; East China University of Science and Technology; Shanghai 200237 P. R. China
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