Doping metal ions only onto the catalyst surface

Ji Chuan Xu; Yan Li Shi; Ji Er Huang; Bo Wang; Hu Lin Li

doi:10.1016/j.molcata.2004.05.018

Doping metal ions only onto the catalyst surface

Ji Chuan Xu, Yan Li Shi, Ji Er Huang, Bo Wang, Hu Lin Li^*

^*Corresponding author for this work

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

74 Citations (Scopus)

Abstract

A new method to dope Zn ²⁺ ions only onto the surface of titanium dioxide is proposed here. The photocatalyst TiO ₂(-Zn) exhibits higher photocatalytic activity than pure TiO ₂ for the degradation of methyl orange in water. The activity increases when separate ZnO phase is removed via an acid treatment. The results of FT-IR, XRD, AAS and XPS analysis show that the Zn ²⁺ ions are located on the surface of TiO ₂ nanoparticles and bonded with oxygen atoms around it. The Zn ²⁺ ions on the surface inhibit electron-hole pair recombination as a charge separation center.

Original language	English
Pages (from-to)	351-355
Number of pages	5
Journal	Journal of Molecular Catalysis A: Chemical
Volume	219
Issue number	2
DOIs	https://doi.org/10.1016/j.molcata.2004.05.018
Publication status	Published - Sept 16 2004
Externally published	Yes

ASJC Scopus Subject Areas

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

Keywords

Doping
Surface
Titanium dioxide
Zinc ions

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10.1016/j.molcata.2004.05.018

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title = "Doping metal ions only onto the catalyst surface",

abstract = "A new method to dope Zn 2+ ions only onto the surface of titanium dioxide is proposed here. The photocatalyst TiO 2(-Zn) exhibits higher photocatalytic activity than pure TiO 2 for the degradation of methyl orange in water. The activity increases when separate ZnO phase is removed via an acid treatment. The results of FT-IR, XRD, AAS and XPS analysis show that the Zn 2+ ions are located on the surface of TiO 2 nanoparticles and bonded with oxygen atoms around it. The Zn 2+ ions on the surface inhibit electron-hole pair recombination as a charge separation center.",

keywords = "Doping, Surface, Titanium dioxide, Zinc ions",

author = "Xu, {Ji Chuan} and Shi, {Yan Li} and Huang, {Ji Er} and Bo Wang and Li, {Hu Lin}",

year = "2004",

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day = "16",

doi = "10.1016/j.molcata.2004.05.018",

language = "English",

volume = "219",

pages = "351--355",

journal = "Journal of Molecular Catalysis A: Chemical",

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T1 - Doping metal ions only onto the catalyst surface

AU - Xu, Ji Chuan

AU - Shi, Yan Li

AU - Huang, Ji Er

AU - Wang, Bo

AU - Li, Hu Lin

PY - 2004/9/16

Y1 - 2004/9/16

N2 - A new method to dope Zn 2+ ions only onto the surface of titanium dioxide is proposed here. The photocatalyst TiO 2(-Zn) exhibits higher photocatalytic activity than pure TiO 2 for the degradation of methyl orange in water. The activity increases when separate ZnO phase is removed via an acid treatment. The results of FT-IR, XRD, AAS and XPS analysis show that the Zn 2+ ions are located on the surface of TiO 2 nanoparticles and bonded with oxygen atoms around it. The Zn 2+ ions on the surface inhibit electron-hole pair recombination as a charge separation center.

AB - A new method to dope Zn 2+ ions only onto the surface of titanium dioxide is proposed here. The photocatalyst TiO 2(-Zn) exhibits higher photocatalytic activity than pure TiO 2 for the degradation of methyl orange in water. The activity increases when separate ZnO phase is removed via an acid treatment. The results of FT-IR, XRD, AAS and XPS analysis show that the Zn 2+ ions are located on the surface of TiO 2 nanoparticles and bonded with oxygen atoms around it. The Zn 2+ ions on the surface inhibit electron-hole pair recombination as a charge separation center.

KW - Doping

KW - Surface

KW - Titanium dioxide

KW - Zinc ions

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DO - 10.1016/j.molcata.2004.05.018

M3 - Article

AN - SCOPUS:3242737782

SN - 1381-1169

VL - 219

SP - 351

EP - 355

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

IS - 2

ER -

Doping metal ions only onto the catalyst surface

Abstract

ASJC Scopus Subject Areas

Keywords

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