Fabrication of novel perovskite-type Sr2Ta(Fe1-xGax)O6 nanoparticles with high visible-light photocatalytic activity

Jianan Wang; Honghui Yang; Wei Lv; Wei Yan

doi:10.1039/c5ra01460c

Fabrication of novel perovskite-type Sr₂Ta(Fe_1-xGa_x)O₆ nanoparticles with high visible-light photocatalytic activity

Xi'an Jiaotong University

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

4 Scopus citations

Abstract

Novel Sr₂Ta(Fe_1-xGa_x)O₆ perovskite photocatalysts were successfully synthesized by a simple one-step sol-gel method and characterized for structural, morphological and optical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), Brunauer Emmett Teller (BET) and UV-visible (UV-vis) diffused reflectance spectroscopy (DRS), respectively. A sample of Sr₂Ta(Fe_0.8Ga_0.2)O₆ calcined at 900 °C for 10 h exhibited the highest photocatalytic activity, and the photodegradation rate of methylene blue (MB) achieved 96.2% after 2 h visible light irradiation. The enhanced photocatalytic performance and outstanding stability were attributed to the appropriate crystallinity, Ga³⁺ doping content and the special perovskite structure. This Ga-doping created impurity levels in the forbidden band, which shortened the band gap and generated more photoactive sites to facilitate photocatalytic activity.

Original language	English
Pages (from-to)	28679-28686
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	36
DOIs	https://doi.org/10.1039/c5ra01460c
State	Published - 2015

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@article{098c7e54dc3e4370a4f7f4a2e0f63a8d,

title = "Fabrication of novel perovskite-type Sr2Ta(Fe1-xGax)O6 nanoparticles with high visible-light photocatalytic activity",

abstract = "Novel Sr2Ta(Fe1-xGax)O6 perovskite photocatalysts were successfully synthesized by a simple one-step sol-gel method and characterized for structural, morphological and optical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), Brunauer Emmett Teller (BET) and UV-visible (UV-vis) diffused reflectance spectroscopy (DRS), respectively. A sample of Sr2Ta(Fe0.8Ga0.2)O6 calcined at 900 °C for 10 h exhibited the highest photocatalytic activity, and the photodegradation rate of methylene blue (MB) achieved 96.2\% after 2 h visible light irradiation. The enhanced photocatalytic performance and outstanding stability were attributed to the appropriate crystallinity, Ga3+ doping content and the special perovskite structure. This Ga-doping created impurity levels in the forbidden band, which shortened the band gap and generated more photoactive sites to facilitate photocatalytic activity.",

author = "Jianan Wang and Honghui Yang and Wei Lv and Wei Yan",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

doi = "10.1039/c5ra01460c",

language = "英语",

volume = "5",

pages = "28679--28686",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Fabrication of novel perovskite-type Sr2Ta(Fe1-xGax)O6 nanoparticles with high visible-light photocatalytic activity

AU - Wang, Jianan

AU - Yang, Honghui

AU - Lv, Wei

AU - Yan, Wei

N1 - Publisher Copyright: © The Royal Society of Chemistry 2015.

PY - 2015

Y1 - 2015

N2 - Novel Sr2Ta(Fe1-xGax)O6 perovskite photocatalysts were successfully synthesized by a simple one-step sol-gel method and characterized for structural, morphological and optical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), Brunauer Emmett Teller (BET) and UV-visible (UV-vis) diffused reflectance spectroscopy (DRS), respectively. A sample of Sr2Ta(Fe0.8Ga0.2)O6 calcined at 900 °C for 10 h exhibited the highest photocatalytic activity, and the photodegradation rate of methylene blue (MB) achieved 96.2% after 2 h visible light irradiation. The enhanced photocatalytic performance and outstanding stability were attributed to the appropriate crystallinity, Ga3+ doping content and the special perovskite structure. This Ga-doping created impurity levels in the forbidden band, which shortened the band gap and generated more photoactive sites to facilitate photocatalytic activity.

AB - Novel Sr2Ta(Fe1-xGax)O6 perovskite photocatalysts were successfully synthesized by a simple one-step sol-gel method and characterized for structural, morphological and optical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), Brunauer Emmett Teller (BET) and UV-visible (UV-vis) diffused reflectance spectroscopy (DRS), respectively. A sample of Sr2Ta(Fe0.8Ga0.2)O6 calcined at 900 °C for 10 h exhibited the highest photocatalytic activity, and the photodegradation rate of methylene blue (MB) achieved 96.2% after 2 h visible light irradiation. The enhanced photocatalytic performance and outstanding stability were attributed to the appropriate crystallinity, Ga3+ doping content and the special perovskite structure. This Ga-doping created impurity levels in the forbidden band, which shortened the band gap and generated more photoactive sites to facilitate photocatalytic activity.

UR - https://www.scopus.com/pages/publications/84961325791

U2 - 10.1039/c5ra01460c

DO - 10.1039/c5ra01460c

M3 - 文章

AN - SCOPUS:84961325791

SN - 2046-2069

VL - 5

SP - 28679

EP - 28686

JO - RSC Advances

JF - RSC Advances

IS - 36

ER -

Fabrication of novel perovskite-type Sr₂Ta(Fe_1-xGa_x)O₆ nanoparticles with high visible-light photocatalytic activity

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