Template and silica interlayer tailorable synthesis of spindle-like multilayer α-Fe2O3/Ag/SnO2 ternary hybrid architectures and their enhanced photocatalytic activity.

Authors:
Lingling Sun
Lingling Sun
Wuhan University
China
Wei Wu
Wei Wu
Helen Diller Family Comprehensive Cancer Center
San Francisco | United States
Shuanglei Yang
Shuanglei Yang
School of Physics and Technology
China
Juan Zhou
Juan Zhou
The First Affiliated Hospital of Xiamen University
Xiamen | China
Mengqing Hong
Mengqing Hong
Wuhan University
China
Xiangheng Xiao
Xiangheng Xiao
Wuhan University
China
Feng Ren
Feng Ren
Wuhan University
China
Changzhong Jiang
Changzhong Jiang
Wuhan University
China

ACS Appl Mater Interfaces 2014 Jan 6;6(2):1113-24. Epub 2014 Jan 6.

Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University , Wuhan, Hubei 430072, P. R. China.

Our study reports a novel iron oxide/noble metal/semiconductor ternary multilayer hybrid structure that was synthesized through template synthesis and layer-by-layer deposition. Three different morphologies of α-Fe2O3/Ag/SiO2/SnO2 hybrid architectures were obtained with different thicknesses of the SiO2 interlayer which was introduced for tailoring and controlling the coupling of noble metal Ag nanoparticles (NPs) with the SnO2 semiconductor. The resulting samples were characterized in terms of morphology, composition, and optical property by various analytical techniques. The as-obtained α-Fe2O3/Ag/SiO2/SnO2 nanocomposites exhibit enhanced visible light or UV photocatalytic abilities, remarkably superior to commercial pure SnO2 products, bare α-Fe2O3 seeds, and α-Fe2O3/SnO2 nanocomposites. Moreover, the sample of α-Fe2O3/Ag/SiO2/SnO2 also exhibits good chemical stability and recyclability because it has higher photocatalytic activity even after eight cycles. The origin of enhanced photocatalytic activity on the multilayer core-shell α-Fe2O3/Ag/SiO2/SnO2 nanocomposites was primarily ascribed to the coupling between noble metal Ag and the two semiconductors Fe2O3 and SnO2, which are proven to be applied in recyclable photocatalysis.

Download full-text PDF

Source
http://pubs.acs.org/doi/10.1021/am404700h
Publisher Site
http://dx.doi.org/10.1021/am404700hDOI Listing
January 2014
5 Reads

Publication Analysis

Top Keywords

photocatalytic activity
12
enhanced photocatalytic
8
coupling noble
8
noble metal
8
hybrid architectures
8
α-fe2o3/ag/sio2/sno2 nanocomposites
8
enhanced visible
4
exhibit enhanced
4
nanocomposites exhibit
4
light photocatalytic
4
superior commercial
4
commercial pure
4
remarkably superior
4
abilities remarkably
4
as-obtained α-fe2o3/ag/sio2/sno2
4
photocatalytic abilities
4
visible light
4
analytical techniques
4
nps sno2
4
sno2 semiconductor
4

Similar Publications