<abstract xmlns="http://www.w3.org/1999/xhtml">Core-shell SiO2/Ag composite spheres with dense, complete and nanoscaled silver shell were prepared by using a novel facile chemical reduction method without surface modification of silica at room temperature. The core-shell composites were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy and energy dispersive X-ray spectroscopy (EDX). The photocatalytic properties towards the degradation of methyl orange (Mo) of the prepared SiO2/Ag composites were also tested. The studies showed that the surface of SiO2 microspheres was homogeneously and completely covered by Ag nanoparticles and the composite exhibited excellent photocatalytic activities. The possible reaction mechanisms for the formation of the silica-silver core-shell spheres were also discussed in this paper.</abstract>

Core-shell SiO2/Ag composite spheres with dense, complete and nanoscaled silver shell were prepared by using a novel facile chemical reduction method without surface modification of silica at room temperature. The core-shell composites were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy and energy dispersive X-ray spectroscopy (EDX). The photocatalytic properties towards the degradation of methyl orange (Mo) of the prepared SiO2/Ag composites were also tested. The studies showed that the surface of SiO2 microspheres was homogeneously and completely covered by Ag nanoparticles and the composite exhibited excellent photocatalytic activities. The possible reaction mechanisms for the formation of the silica-silver core-shell spheres were also discussed in this paper.

Core-shell SiO2/Ag composite spheres: synthesis, characterization and photocatalytic properties

Department of Chemistry, School of Science, North University of China, Taiyuan, 030051, Shanxi Province,

Materials Science-Poland

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Core-shell SiO/Ag composite spheres: synthesis, characterization and photocatalytic properties

Core-shell SiO2/Ag composite spheres with dense, complete and nanoscaled silver shell were prepared by using a novel facile chemical reduction method without...

Core-shell SiO₂/Ag composite spheres: synthesis, characterization and photocatalytic properties

Pubblicato online: 02 gen 2017

Pagine: 806 - 810

Ricevuto: 01 mar 2016

Accettato: 20 ott 2016

DOI: https://doi.org/10.1515/msp-2016-0121

Parole chiave
core-shell, SiO/Ag composite, deposition, photocatalytic property

© 2016 Wroclaw University of Technology

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Core-shell SiO2/Ag composite spheres: synthesis, characterization and photocatalytic properties

Pubblicato online: 02 gen 2017

Pagine: 806 - 810

Ricevuto: 01 mar 2016

Accettato: 20 ott 2016

DOI: https://doi.org/10.1515/msp-2016-0121

Parole chiavecore-shell, SiO/Ag composite, deposition, photocatalytic property

© 2016 Wroclaw University of Technology

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Core-shell SiO₂/Ag composite spheres: synthesis, characterization and photocatalytic properties

Parole chiave
core-shell, SiO/Ag composite, deposition, photocatalytic property