Morphological and Structural Characterization of (Pt, Au, and Ag) Nanoparticle/Zn-MOF-74 Composites.

Autor:	Pereira de Figueiredo JA; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., Moreno Zapata MJ; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., Amorim LS; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., de Oliveira Neto JA; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., Miquita DR; Centro de Microscopia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., Soares EA; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., Balzuweit K; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil., Pinheiro CB; Physics Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
Jazyk:	angličtina
Zdroj:	ACS omega [ACS Omega] 2024 May 10; Vol. 9 (20), pp. 21939-21947. Date of Electronic Publication: 2024 May 10 (Print Publication: 2024).
DOI:	10.1021/acsomega.3c09973
Abstrakt:	Metallic nanoparticles (NPs) were decorated onto Zn-MOF-74 crystals by photoreducing different metal precursors (Pt, Au, and Ag) using ultraviolet (UV) light in an aqueous solution with different metal concentrations without using additional stabilizers. X-ray diffraction revealed the three-dimensional structural integrity and crystallinity conservation of Zn-MOF-74 crystals during the UV decoration process. Raman spectroscopy showed a minor rearrangement in the structure of the Zn-MOF-74 crystal surface after NP decoration. X-ray photoelectron spectroscopy confirmed the metal oxidation states of Zn and NPs. High-resolution transmission electron microscopy images proved the surface decoration of Zn-MOF-74 crystals with spherical metallic NPs with diameters between 2.4 and 9.8 nm. Competing Interests: The authors declare no competing financial interest. (© 2024 The Authors. Published by American Chemical Society.)
Databáze:	MEDLINE
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