Design and assembly of ternary Pt/Re/SnO2 NPs by controlling the zeta potential of individual Pt, Re, and SnO2 NPs

被引：25

作者：

Drzymala, Elzbieta ^{[1
]}

Gruzel, Grzegorz ^{[1
]}

Pajor-Swierzy, Anna ^{[2
]}

Depciuch, Joanna ^{[1
]}

Socha, Robert ^{[2
]}

Kowal, Andrzej ^{[1
]}

Warszynski, Piotr ^{[2
]}

Parlinska-Wojtan, Magdalena ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland

[2] Polish Acad Sci, Jerzy Haber Inst Catalysis & Surface Chem, Niezapominajek 8, PL-30239 Krakow, Poland

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2018年 / 20卷 / 05期

关键词：

Catalytic nanoparticles; TEM characterization; Zeta potential; Pt; Re; SnO2; NPs; Nanocolloids; ETHANOL OXIDATION REACTION; INFRARED-SPECTRA; ELECTROCATALYTIC ACTIVITY; OPTICAL-PROPERTIES; FUEL-CELLS; TIN OXIDE; NANOPARTICLES; CATALYSTS; RH; CO2;

D O I：

10.1007/s11051-018-4244-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study Pt, Re, and SnO2 nanoparticles (NPs) were combined in a controlled manner into binary and ternary combinations for a possible application for ethanol oxidation. For this purpose, zeta potentials as a function of the pH of the individual NPs solutions were measured. In order to successfully combine the NPs into Pt/SnO2 and Re/SnO2 NPs, the solutions were mixed together at a pH guaranteeing opposite zeta potentials of the metal and oxide NPs. The individually synthesized NPs and their binary/ternary combinations were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning transmission electron microscopy (STEM) combined with energy dispersive X-ray spectroscopy (EDS) analysis. FTIR and XPS spectroscopy showed that the individually synthesized Pt and Re NPs are metallic and the Sn component was oxidized to SnO2. STEM showed that all NPs are well crystallized and the sizes of the Pt. Re, and SnO2 NPs were 2.2, 1.0, and 3.4 nm, respectively. Moreover, EDS analysis confirmed the successful formation of binary Pt/SnO2 and Re/SnO2 NP, as well as ternary Pt/Re/ SnO2 NP combinations. This study shows that by controlling the zeta potential of individual metal and oxide NPs, it is possible to assemble them into binary and ternary combinations.

引用

页数：13

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