Synthesis and photocatalytic activity of sulfate modified Nd-doped TiO2 under visible light irradiation

Dongfeng Sun; Kai Wang; Zhijian Xu; Ruixing Li

doi:10.1016/S1002-0721(14)60446-4

Synthesis and photocatalytic activity of sulfate modified Nd-doped TiO₂ under visible light irradiation

Dongfeng Sun
, Kai Wang
, Zhijian Xu
, Ruixing Li^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University
Dalian University

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

27 Scopus citations

Abstract

Nd-doped TiO₂ (NT) photocatalysts with different contents of Nd were synthesized by sol-gel method. Then sulfated Nd-doped TiO₂ (SNT) solid superacid photocatalysts were prepared by an incipient wetness impregnation technique. The photocatalytic activity of catalysts was evaluated by the photodegradation of methylene blue under visible light irradiation. Analytical results demonstrated that Nd doping inhibited the growth of TiO₂ crystallite and enhanced the thermal stability of anatase TiO₂. Meanwhile, sulfate ions modification increased the specific surface area of samples. In addition, the optical absorption edges of SNT photocatalysts shifted to longer wavelength compared with the undoped TiO₂. Such SNT with Nd dosage of 0.25 at.% exhibited the highest photocatalytic activity in the degradation of methylene blue upon irradiation with visible light.

Original language	English
Pages (from-to)	491-497
Number of pages	7
Journal	Journal of Rare Earths
Volume	33
Issue number	5
DOIs	https://doi.org/10.1016/S1002-0721(14)60446-4
State	Published - 1 May 2015

Keywords

methylene blue
photocatalyst
rare earths
solid superacid
TiO
visible light

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10.1016/S1002-0721(14)60446-4

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title = "Synthesis and photocatalytic activity of sulfate modified Nd-doped TiO2 under visible light irradiation",

abstract = "Nd-doped TiO2 (NT) photocatalysts with different contents of Nd were synthesized by sol-gel method. Then sulfated Nd-doped TiO2 (SNT) solid superacid photocatalysts were prepared by an incipient wetness impregnation technique. The photocatalytic activity of catalysts was evaluated by the photodegradation of methylene blue under visible light irradiation. Analytical results demonstrated that Nd doping inhibited the growth of TiO2 crystallite and enhanced the thermal stability of anatase TiO2. Meanwhile, sulfate ions modification increased the specific surface area of samples. In addition, the optical absorption edges of SNT photocatalysts shifted to longer wavelength compared with the undoped TiO2. Such SNT with Nd dosage of 0.25 at.\% exhibited the highest photocatalytic activity in the degradation of methylene blue upon irradiation with visible light.",

keywords = "methylene blue, photocatalyst, rare earths, solid superacid, TiO, visible light",

author = "Dongfeng Sun and Kai Wang and Zhijian Xu and Ruixing Li",

note = "Publisher Copyright: {\textcopyright} 2015 The Chinese Society of Rare Earths.",

year = "2015",

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doi = "10.1016/S1002-0721(14)60446-4",

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publisher = "Editorial Office of Chinese Rare Earths",

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TY - JOUR

T1 - Synthesis and photocatalytic activity of sulfate modified Nd-doped TiO2 under visible light irradiation

AU - Sun, Dongfeng

AU - Wang, Kai

AU - Xu, Zhijian

AU - Li, Ruixing

PY - 2015/5/1

Y1 - 2015/5/1

N2 - Nd-doped TiO2 (NT) photocatalysts with different contents of Nd were synthesized by sol-gel method. Then sulfated Nd-doped TiO2 (SNT) solid superacid photocatalysts were prepared by an incipient wetness impregnation technique. The photocatalytic activity of catalysts was evaluated by the photodegradation of methylene blue under visible light irradiation. Analytical results demonstrated that Nd doping inhibited the growth of TiO2 crystallite and enhanced the thermal stability of anatase TiO2. Meanwhile, sulfate ions modification increased the specific surface area of samples. In addition, the optical absorption edges of SNT photocatalysts shifted to longer wavelength compared with the undoped TiO2. Such SNT with Nd dosage of 0.25 at.% exhibited the highest photocatalytic activity in the degradation of methylene blue upon irradiation with visible light.

AB - Nd-doped TiO2 (NT) photocatalysts with different contents of Nd were synthesized by sol-gel method. Then sulfated Nd-doped TiO2 (SNT) solid superacid photocatalysts were prepared by an incipient wetness impregnation technique. The photocatalytic activity of catalysts was evaluated by the photodegradation of methylene blue under visible light irradiation. Analytical results demonstrated that Nd doping inhibited the growth of TiO2 crystallite and enhanced the thermal stability of anatase TiO2. Meanwhile, sulfate ions modification increased the specific surface area of samples. In addition, the optical absorption edges of SNT photocatalysts shifted to longer wavelength compared with the undoped TiO2. Such SNT with Nd dosage of 0.25 at.% exhibited the highest photocatalytic activity in the degradation of methylene blue upon irradiation with visible light.

KW - methylene blue

KW - photocatalyst

KW - rare earths

KW - solid superacid

KW - TiO

KW - visible light

UR - https://www.scopus.com/pages/publications/84929467163

U2 - 10.1016/S1002-0721(14)60446-4

DO - 10.1016/S1002-0721(14)60446-4

M3 - 文章

AN - SCOPUS:84929467163

SN - 1002-0721

VL - 33

SP - 491

EP - 497

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 5

ER -

Synthesis and photocatalytic activity of sulfate modified Nd-doped TiO₂ under visible light irradiation

Abstract

Keywords

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