TY - JOUR
T1 - Effects of capping layers on the photoelectrochemical property of silver nanoparticle-modified indium-tin-oxide electrode
AU - Matsuoka, Ken Ichi
AU - Tahara, Hironobu
AU - Akiyama, Tsuyoshi
AU - Yamada, Sunao
N1 - Funding Information:
This research was partially supported by Research Fellowships of Japan Society for the Promotion of Science (JSPS) for young scientists ( HAG1004391 ) and Grant-in-Aid for Scientific Research (No. 19201021 ) and of the Priority Area (Area code 470) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.
PY - 2011/6/25
Y1 - 2011/6/25
N2 - Photoelectrochemical properties of indium-tin-oxide (ITO) substrate modified with silver nanoparticles (AgNPs) and effects of surface capping layer of AgNP were investigated in the water/acetonitrile (H2O/MeCN) electrolyte solutions with the presence of oxygen as an electron acceptor. The modified ITO substrate showed photocurrent response mainly driven by the photoinduced electron transfer from ITO substrate to AgNPs. In addition, its photoelectrochemical property significantly depended on the solvent composition of electrolyte solution which was in correlation with surface status of AgNPs. Combination of photoelectrochemical measurements and spectroscopic analysis suggested that presence of considerable amount of MeCN in the electrolyte solution triggered partial displacement of capping citrate ions to activate photocurrent generation.
AB - Photoelectrochemical properties of indium-tin-oxide (ITO) substrate modified with silver nanoparticles (AgNPs) and effects of surface capping layer of AgNP were investigated in the water/acetonitrile (H2O/MeCN) electrolyte solutions with the presence of oxygen as an electron acceptor. The modified ITO substrate showed photocurrent response mainly driven by the photoinduced electron transfer from ITO substrate to AgNPs. In addition, its photoelectrochemical property significantly depended on the solvent composition of electrolyte solution which was in correlation with surface status of AgNPs. Combination of photoelectrochemical measurements and spectroscopic analysis suggested that presence of considerable amount of MeCN in the electrolyte solution triggered partial displacement of capping citrate ions to activate photocurrent generation.
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U2 - 10.1016/j.jphotochem.2011.03.015
DO - 10.1016/j.jphotochem.2011.03.015
M3 - Article
AN - SCOPUS:79960466179
SN - 1010-6030
VL - 221
SP - 239
EP - 243
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 2-3
ER -