Plasmon‐Resonance‐Based Generation of Cathodic Photocurrent at Electrodeposited Gold Nanoparticles Coated with TiO 2  Films | Zendy

Sakai Nobuyuki | Zendy; Fujiwara Yusuke | Zendy; Takahashi Yukina | Zendy; Tatsuma Tetsu | Zendy

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Plasmon‐Resonance‐Based Generation of Cathodic Photocurrent at Electrodeposited Gold Nanoparticles Coated with TiO 2 Films

Author(s) -

Sakai Nobuyuki,

Fujiwara Yusuke,

Takahashi Yukina,

Tatsuma Tetsu

Publication year - 2009

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.200800704

Subject(s) - photocurrent , surface plasmon resonance , indium tin oxide , materials science , nanoparticle , electrode , plasmon , photoelectrochemistry , colloidal gold , tin oxide , excited state , photochemistry , electron transfer , electrochemistry , oxide , optoelectronics , nanotechnology , thin film , chemistry , physics , nuclear physics , metallurgy

Reversed photoresponse: Indium tin oxide (ITO)/Au nanoparticle (NP)/TiO 2 electrodes (see picture) exhibit cathodic photocurrents and positive photopotentials under visible light, whereas ITO/TiO 2 /Au NP electrodes show an inverted response. This behavior indicates that electron transfer occurs from the plasmon‐excited Au NPs to the TiO 2 film. An enhanced O 2 photoreduction activity is found for ITO/Au NP/TiO 2 /Pt electrodes.

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