Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/95655
Author(s): | Sónia Carabineiro Cláudia Gomes da Silva Maria Sampaio Daniel L. Baptista Joaquim Luís Faria José Luís Figueiredo |
Title: | Gold nanoparticles on zinc oxide imaged by electron microscopy |
Issue Date: | 2014 |
Abstract: | ZnO materials with different micro/nanoscale morphologies (needle-like, rods, flower-like and spheroidal) were preparedby different techniques. Gold was loaded (1% wt.) on the ZnO supports through a double impregnation method. Themorphology of the ZnO and Au/ZnO materials was analyzed by scanning electron microscopy (SEM) and energydispersiveX-ray spectroscopy (EDS). Scanning transmission electron microscopy (STEM) and a high-angle annular darkfield(HAADF) detector were used to detect the gold anoparticles. High-resolution transmission electron microscopy (HRTEM) of Au/ZnO was also performed. As gold is only catalytically active in the form of nanoparticles well dispersed on the support, it is very important to use electron microscopy methods that enable the determination of size, morphology,crystallinity and chemistry of nanoscale gold. |
Subject: | Análise instrumental, Nanotecnologia, Engenharia química, Nanotecnologia Instrumental analysis, Nanotechonology, Chemical engineering, Nano-technology |
Scientific areas: | Ciências da engenharia e tecnologias::Nanotecnologia Engineering and technology::Nano-technology |
URI: | https://repositorio-aberto.up.pt/handle/10216/95655 |
Source: | Microscopy: advances in scientific research and education |
Document Type: | Capítulo ou Parte de Livro |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Capítulo ou Parte de Livro |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
92665.pdf Restricted Access | 3.32 MB | Adobe PDF | Request a copy from the Author(s) |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.