Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions

Nanoscale
Takeshi NagahiroKaoru Tamada

Abstract

The lateral remote photocatalytic activity of TiO(2) nanotubes fabricated by anodic oxidation, was characterized by use of a 'silver nanosheet' as a marker. The silver nanosheet is a two-dimensional crystalline film composed of myristate-capped silver nanoparticles (d = 5 nm), which has a sharp localized plasmon absorption band at lambda(max) = 470 nm. A quartz substrate was coated with TiO(2) nanotubes to a coverage of 10% and then covered with a silver nanosheet. Upon UV irradiation a rapid decrease in the intensity of the 470 nm plasmon band and an increase in the long-wavelength absorption (550-1000 nm) band were clearly confirmed, indicating fusion of the nanoparticles due to decomposition of the myristate capping agent. Surface morphology measured by high-resolution scanning electron microscopy (SEM) and atomic force microscopy (AFM) revealed the decomposition and fusion of silver nanoparticles even in regions of the surface a micron away from the TiO(2) nanotubes.

References

Oct 28, 2003·Angewandte Chemie·Shanmugasundaram Sakthivel, Horst Kisch
Jan 8, 2004·Journal of the American Chemical Society·Jae P Lee, Myung M Sung
Mar 18, 2004·Journal of the American Chemical Society·Kenji NaoiTetsu Tatsuma
Mar 29, 2005·Nano Letters·Gopal K MorCraig A Grimes
Dec 15, 2006·Journal of the American Chemical Society·Wakana Kubo, Tetsu Tatsuma
Feb 28, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Nicolas BlondiauxNicholas D Spencer
Sep 6, 2008·Angewandte Chemie·Peng WangMyung-Hwan Whangbo
Sep 23, 2009·ACS Nano·Xian Ning XieAndrew Thye Shen Wee

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Citations

Oct 1, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Nobuko FukudaHirobumi Ushijima
Mar 23, 2011·Physical Chemistry Chemical Physics : PCCP·Mana TomaKaoru Tamada
Mar 15, 2011·Chemical Communications : Chem Comm·Cai LiuEdward S Yeung
Jul 23, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Ryo DegawaKaoru Tamada

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