A composite photocatalyst of CdS nanoparticles deposited on TiO 2 nanosheets

Jum Suk Jang; Sun Hee Choi; Hyunwoong Park; Wonyong Choi; Jae Sung Lee

doi:10.1166/jnn.2006.073

A composite photocatalyst of CdS nanoparticles deposited on TiO ₂ nanosheets

Jum Suk Jang
, Sun Hee Choi
, Hyunwoong Park
, Wonyong Choi
, Jae Sung Lee

School of Energy Engineering

Pohang University of Science and Technology
Pohang Accelerator Laboratory

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

A nanocomposite photocatalyst consisting of deposited CdS nanoparticles on TiO ₂ nanosheets was fabricated by a simple one-pot method. The contact between two phases was maximized by making a composite structure of TiO ₂ nanosheet decorated with CdS nanoparticles. The composite photocatalyst showed higher photoactivity for hydrogen production from aqueous Na ₂S/Na ₂SO ₃ solution and decomposition of methylene blue under visible light irradiation (λ ≥ 420 nm) compared with single component CdS nanoparticles or a physical mixture of CdS nanoparticles and TiO ₂ nanorods. The intentional formation of nanoscale heterojunctions between two phases appears beneficial for inducing an efficient electron-hole separation.

Original language	English
Pages (from-to)	3642-3646
Number of pages	5
Journal	Journal of Nanoscience and Nanotechnology
Volume	6
Issue number	11
DOIs	https://doi.org/10.1166/jnn.2006.073
State	Published - Nov 2006

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

CdS
Hydrogen
Nanoparticle-nanosheet composite
Photocatalyst
TiO

Access to Document

10.1166/jnn.2006.073

Cite this

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title = "A composite photocatalyst of CdS nanoparticles deposited on TiO 2 nanosheets",

abstract = "A nanocomposite photocatalyst consisting of deposited CdS nanoparticles on TiO 2 nanosheets was fabricated by a simple one-pot method. The contact between two phases was maximized by making a composite structure of TiO 2 nanosheet decorated with CdS nanoparticles. The composite photocatalyst showed higher photoactivity for hydrogen production from aqueous Na 2S/Na 2SO 3 solution and decomposition of methylene blue under visible light irradiation (λ ≥ 420 nm) compared with single component CdS nanoparticles or a physical mixture of CdS nanoparticles and TiO 2 nanorods. The intentional formation of nanoscale heterojunctions between two phases appears beneficial for inducing an efficient electron-hole separation.",

keywords = "CdS, Hydrogen, Nanoparticle-nanosheet composite, Photocatalyst, TiO",

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year = "2006",

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AU - Choi, Sun Hee

AU - Park, Hyunwoong

AU - Choi, Wonyong

AU - Lee, Jae Sung

PY - 2006/11

Y1 - 2006/11

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AB - A nanocomposite photocatalyst consisting of deposited CdS nanoparticles on TiO 2 nanosheets was fabricated by a simple one-pot method. The contact between two phases was maximized by making a composite structure of TiO 2 nanosheet decorated with CdS nanoparticles. The composite photocatalyst showed higher photoactivity for hydrogen production from aqueous Na 2S/Na 2SO 3 solution and decomposition of methylene blue under visible light irradiation (λ ≥ 420 nm) compared with single component CdS nanoparticles or a physical mixture of CdS nanoparticles and TiO 2 nanorods. The intentional formation of nanoscale heterojunctions between two phases appears beneficial for inducing an efficient electron-hole separation.

KW - CdS

KW - Hydrogen

KW - Nanoparticle-nanosheet composite

KW - Photocatalyst

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