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
收藏
页码：21939 / 21947
页数：9
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