Synthesis of metal–cadmium sulfide nanocomposites using jingle-bell-shaped core-shell photocatalyst particles

Pal, Bonamali; Torimoto, Tsukasa; Iwasaki, Kentaro; Shibayama, Tamaki; Takahashi, Heishichiro; Ohtani, Bunsho

Synthesis of metal–cadmium sulfide nanocomposites using jingle-bell-shaped core-shell photocatalyst particles

Pal, Bonamali; Torimoto, Tsukasa; Iwasaki, Kentaro et al.

Journal of Applied Electrochemistry, 2005, 35(7-8), 751-756

Permalink : https://hdl.handle.net/2115/14642

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アクセス権	open access
URI	https://hdl.handle.net/2115/14642
タイトル	Synthesis of metal–cadmium sulfide nanocomposites using jingle-bell-shaped core-shell photocatalyst particles
著者	Pal, Bonamali ; Torimoto, Tsukasa ; Iwasaki, Kentaro ; Shibayama, Tamaki ; Takahashi, Heishichiro ; Ohtani, Bunsho
著者名 Pal, Bonamali
著者名 Torimoto, Tsukasa
著者名 Iwasaki, Kentaro
著者名 Shibayama, Tamaki
著者名 Takahashi, Heishichiro
e-Rad_Researcher 80176924 著者名 Ohtani, Bunsho
言語	英語
キーワード	cadmium sulfide
	core-shell particle
	gold
	jingle bell structure
	nanoparticle
	photocatalyst
	photodeposition
	silver
	size-selective photoetching
発行日	2005-07
出版者	Springer Netherlands
収録物名	Journal of Applied Electrochemistry
巻(号)	35(7-8)
ページ	751-756
抄録	Photocatalytic deposition of gold (Au) and silver (Ag) nanoparticles was investigated using jingle-bell-shaped silica (SiO2)-coated cadmium sulfide (CdS) nanoparticles (SiO2/CdS), which each had a void space between the CdS core and SiO2 shell, as a photocatalyst. A size-selective photoetching technique was used to prepare the jingle bell nanostructure of SiO2/CdS. Nanoparticles of Au and Ag were deposited by irradiation of the photoetched SiO2/CdS in the presence of the corresponding metal complexes under deaerated conditions. Chemical etching of Au-deposited particles enabled the selective removal of CdS without any influence on the surface-plasmon absorption of Au. TEM analyses of the resulting particles suggested that some particles were encapsulated in hollow SiO2 particles, while other Au particles were deposited on the outer surface of the SiO2 shell. Emission spectra of the photoetched SiO2/CdS showed that the metal deposition developed a broad emission with a peak around 650 nm originating from surface defect sites, the degree being dependent on the kind of metal nanoparticles and their amount of deposition. This fact can be explained by the formation of metal–CdS binary nanoparticles having defect sites at the interface between metal and CdS.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	The original publication is available at www.springerlink.com
PISSN	0021-891X
EISSN	1572-8838
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10800-005-1618-7