Platinum nanoparticle co-catalyst-induced improved photoelectrical properties in a chromium-doped SrTiO3 photocatalyst

J. S. Jang; J. S. Lee; Pramod H. Borse; K. T. Lim; O. S. Jung; E. D. Jeong; M. S. Won; H. G. Kim

doi:10.3938/jkps.55.2470

Platinum nanoparticle co-catalyst-induced improved photoelectrical properties in a chromium-doped SrTiO₃ photocatalyst

J. S. Jang
, J. S. Lee
, Pramod H. Borse
, K. T. Lim
, O. S. Jung
, E. D. Jeong
, M. S. Won
, H. G. Kim

Environmental Biotechnology

Pohang University of Science and Technology
International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad
Pukyong National University
Pusan National University
Korea Basic Science Institute

Research output: Contribution to journal › Journal article › peer-review

9 Scopus citations

Abstract

SrTi_1-xCr_xO₃ (0 ≤ x ≤ 0.5) photocatalysts were prepared by using conventional solid state reactions at 1300 °C for 5 h and were characterized by using ultraviolet-visible (UV-vis) absorption spectroscopy. SrTi_1-xCr_xO₃ samples not only absorb UV light photons, but also visible light photons due to substitutional doping of chromium at titanium sites in the SrTiO₃ lattice. Apparently, the band transition from the Cr 3d to the Cr 3d + Ti-3d hybrid orbital induces visible light absorptivity in SrTi_1-xCr _xO₃ samples. The photocatalytic activity of Cr-doped SrTiO₃ samples for hydrogen production from water-methanol mixtures under UV light irradiation decreased with increased Cr doping concentration in SrTiO₃. Conclusively, there exists an optimum chromium and platinum concentration in SrTiO₃ for achieving high photocatalytic activity under visible light (λ ≥ 420 nm).

Original language	English
Pages (from-to)	2470-2475
Number of pages	6
Journal	Journal of the Korean Physical Society
Volume	55
Issue number	6
DOIs	https://doi.org/10.3938/jkps.55.2470
State	Published - 2009.12

Keywords

Cr-doped srtio
Hydrogen production
Photocatalysis
Solid state reaction

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@article{73aa0404e54849848a491259b8aa828d,

title = "Platinum nanoparticle co-catalyst-induced improved photoelectrical properties in a chromium-doped SrTiO3 photocatalyst",

abstract = "SrTi1-xCrxO3 (0 ≤ x ≤ 0.5) photocatalysts were prepared by using conventional solid state reactions at 1300 °C for 5 h and were characterized by using ultraviolet-visible (UV-vis) absorption spectroscopy. SrTi1-xCrxO3 samples not only absorb UV light photons, but also visible light photons due to substitutional doping of chromium at titanium sites in the SrTiO3 lattice. Apparently, the band transition from the Cr 3d to the Cr 3d + Ti-3d hybrid orbital induces visible light absorptivity in SrTi1-xCr xO3 samples. The photocatalytic activity of Cr-doped SrTiO3 samples for hydrogen production from water-methanol mixtures under UV light irradiation decreased with increased Cr doping concentration in SrTiO3. Conclusively, there exists an optimum chromium and platinum concentration in SrTiO3 for achieving high photocatalytic activity under visible light (λ ≥ 420 nm).",

keywords = "Cr-doped srtio, Hydrogen production, Photocatalysis, Solid state reaction",

author = "Jang, \{J. S.\} and Lee, \{J. S.\} and Borse, \{Pramod H.\} and Lim, \{K. T.\} and Jung, \{O. S.\} and Jeong, \{E. D.\} and Won, \{M. S.\} and Kim, \{H. G.\}",

year = "2009",

month = dec,

doi = "10.3938/jkps.55.2470",

language = "English",

volume = "55",

pages = "2470--2475",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

number = "6",

}

TY - JOUR

T1 - Platinum nanoparticle co-catalyst-induced improved photoelectrical properties in a chromium-doped SrTiO3 photocatalyst

AU - Jang, J. S.

AU - Lee, J. S.

AU - Borse, Pramod H.

AU - Lim, K. T.

AU - Jung, O. S.

AU - Jeong, E. D.

AU - Won, M. S.

AU - Kim, H. G.

PY - 2009/12

Y1 - 2009/12

N2 - SrTi1-xCrxO3 (0 ≤ x ≤ 0.5) photocatalysts were prepared by using conventional solid state reactions at 1300 °C for 5 h and were characterized by using ultraviolet-visible (UV-vis) absorption spectroscopy. SrTi1-xCrxO3 samples not only absorb UV light photons, but also visible light photons due to substitutional doping of chromium at titanium sites in the SrTiO3 lattice. Apparently, the band transition from the Cr 3d to the Cr 3d + Ti-3d hybrid orbital induces visible light absorptivity in SrTi1-xCr xO3 samples. The photocatalytic activity of Cr-doped SrTiO3 samples for hydrogen production from water-methanol mixtures under UV light irradiation decreased with increased Cr doping concentration in SrTiO3. Conclusively, there exists an optimum chromium and platinum concentration in SrTiO3 for achieving high photocatalytic activity under visible light (λ ≥ 420 nm).

AB - SrTi1-xCrxO3 (0 ≤ x ≤ 0.5) photocatalysts were prepared by using conventional solid state reactions at 1300 °C for 5 h and were characterized by using ultraviolet-visible (UV-vis) absorption spectroscopy. SrTi1-xCrxO3 samples not only absorb UV light photons, but also visible light photons due to substitutional doping of chromium at titanium sites in the SrTiO3 lattice. Apparently, the band transition from the Cr 3d to the Cr 3d + Ti-3d hybrid orbital induces visible light absorptivity in SrTi1-xCr xO3 samples. The photocatalytic activity of Cr-doped SrTiO3 samples for hydrogen production from water-methanol mixtures under UV light irradiation decreased with increased Cr doping concentration in SrTiO3. Conclusively, there exists an optimum chromium and platinum concentration in SrTiO3 for achieving high photocatalytic activity under visible light (λ ≥ 420 nm).

KW - Cr-doped srtio

KW - Hydrogen production

KW - Photocatalysis

KW - Solid state reaction

UR - https://www.scopus.com/pages/publications/76549083607

U2 - 10.3938/jkps.55.2470

DO - 10.3938/jkps.55.2470

M3 - Journal article

AN - SCOPUS:76549083607

SN - 0374-4884

VL - 55

SP - 2470

EP - 2475

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 6

ER -

Platinum nanoparticle co-catalyst-induced improved photoelectrical properties in a chromium-doped SrTiO₃ photocatalyst

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Keywords

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