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

被引：0

作者：

de Figueiredo, JulianaAssuncao Pereira ^{[1
]}

Zapata, Maximiliano Jesus Moreno ^{[1
]}

Amorim, Laise Serra ^{[1
]}

Neto, Joao Alves de Oliveira ^{[1
]}

Miquita, Douglas Rodrigues ^{[2
]}

Soares, Edmar Avellar ^{[1
]}

Balzuweit, Karla ^{[1
]}

Pinheiro, Carlos Basilio ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Phys Dept, BR-31270901 Belo Horizonte, Brazil

[2] Univ Fed Minas Gerais, Ctr Microscopia, BR-31270901 Belo Horizonte, Brazil

来源：

ACS OMEGA | 2024年 / 9卷 / 20期

关键词：

METAL-ORGANIC FRAMEWORKS; NOBLE-METAL; ADSORPTION; DEPOSITION; MOF-74; WATER;

D O I：

10.1021/acsomega.3c09973

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：21939 / 21947

页数：9

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