Enhanced Photocatalytic Activities of Core–Shell Au–Titanate Nanoparticles

2007 ◽  
Vol 36 (1) ◽  
pp. 128-129 ◽  
Author(s):  
Tomokatsu Hayakawa ◽  
Mamiko Hori ◽  
C. Pagnoux ◽  
J. F. Baumard ◽  
Masayuki Nogami
Keyword(s):  
Core Shell ◽  
Photocatalytic Activities

Synthesis of highly monodispersed teardrop-shaped core–shell SiO2/TiO2 nanoparticles and their photocatalytic activities

2015 ◽  
Vol 351 ◽  
pp. 320-326 ◽  
Author(s):  
Lihong Wu ◽  
Yifeng Zhou ◽  
Wangyan Nie ◽  
Linyong Song ◽  
Pengpeng Chen
Keyword(s):  
Tio2 Nanoparticles ◽  
Core Shell ◽  
Photocatalytic Activities

Core-Shell SiO2/Ag Composite Spheres Prepared by Electrical Exploding Wire Plasma Technique: Synthesis and Characterization

2021 ◽  
Vol 19 (10) ◽  
pp. 82-88
Author(s):  
Duaa A. Uamran ◽  
Qasim Hassan Ubaid ◽  
Hammad R. Humud
Keyword(s):  
Laser Pulse ◽  
Laser Pulses ◽  
Structural Features ◽  
Optical Absorption Spectroscopy ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Shell Nanoparticles ◽  
X Ray ◽  
Photocatalytic Activities ◽  
Core Shell Nanoparticles

Core-shell nanoparticles (SiO2/Ag) were manufactured by using a two-step process: Electric detonation of Ag. Wire in colloidal solution particles then by using laser pulses, nanoparticles are released. The structural features of these nanoparticles were checked by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The (XRD) study showed the progressive coverage of SiO2/Ag by nanoparticles according to the energies of the laser pulse. Measurements of morphology and EDX confirmed the Core/shell structure with particle size at the nano level. It confirmed that preliminary analysis consists of a SiO2 core and an Ag shell from FESEM. The surface of the microscopic balls (SiO2) has been covered completely and homogeneously with Ag nanoparticles, Moreover, Ultraviolet-Visible, and by optical absorption spectroscopy, the Nanoparticles with core crust SiO2/Ag showed excellent photocatalytic activities at various concentrations and laser pulse energy.

Core–shell structured Fe3O4@SiO2@CdS nanoparticles with enhanced visible-light photocatalytic activities

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 106038-106043 ◽  
Author(s):  
Wen Shi ◽  
Deli Lu ◽  
Lingzhi Wang ◽  
Fei Teng ◽  
Jinlong Zhang
Keyword(s):  
Visible Light ◽  
Cds Nanoparticles ◽  
Core Shell ◽  
Photocatalytic Activities ◽  
Visible Light Photocatalytic

Uniform core–shell structured Fe3O4@SiO2@CdS is synthesized by a facile chelating-assistant growth route, which enhances the photocatalytic activities.

Synthesis and visible photocatalytic activities of a Au@Ag@ZnO triple layer core–shell nanostructure

2014 ◽  
Vol 38 (9) ◽  
pp. 4197-4203 ◽  
Author(s):  
Mrinmoy Misra ◽  
Pawan Kapur ◽  
Manoj Kumar Nayak ◽  
MadanLal Singla
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Core Shell ◽  
Photo Degradation ◽  
Photocatalytic Mechanism ◽  
Triple Layer ◽  
Photocatalytic Activities ◽  
Kinetics Of

Visible light induced photocatalytic mechanism of Au@Ag@ZnO core–shell nanostructure and kinetics of methyl orange (MO) photo degradation by ZnO, Au@ZnO, Au@Ag@ZnO and TiO2.

Preparation, characterization and photocatalytic activities of ZrWMoO8/Ag composites with core–shell structure

2012 ◽  
Vol 261 ◽  
pp. 593-597 ◽  
Author(s):  
Qinqin Liu ◽  
Shuai Sun ◽  
Haohua Li ◽  
Xiaofei Yang ◽  
Hao Shen ◽  
...  
Keyword(s):  
Shell Structure ◽  
Core Shell ◽  
Photocatalytic Activities ◽  
Core Shell Structure

Synthesis of Highly Monodispersed CdS/SiO2 Core Shell Nanoparticles and Their Photocatalytic Activities

2015 ◽  
Vol 15 (3) ◽  
pp. 2364-2370 ◽  
Author(s):  
Qinghua Guo ◽  
Yifeng Zhou ◽  
Wangyan Nie ◽  
Pengpeng Chen ◽  
Linyong Song
Keyword(s):  
Core Shell ◽  
Shell Nanoparticles ◽  
Photocatalytic Activities ◽  
Core Shell Nanoparticles

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

2016 ◽  
Vol 34 (4) ◽  
pp. 806-810 ◽  
Author(s):  
Zhi Gang Wu ◽  
Yan Rong Jia ◽  
Jian Wang ◽  
Yang Guo ◽  
Jian Feng Gao
Keyword(s):  
Room Temperature ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Photocatalytic Properties ◽  
Core Shell ◽  
Chemical Reduction Method ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Photocatalytic Activities ◽  
Degradation Of Methyl Orange

AbstractCore-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.

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