TY - JOUR
T1 - Porous FeOx/BiVO4-δS0.08
T2 - Highly efficient photocatalysts for the degradation of Methylene Blue under visible-light illumination
AU - Zhao, Zhenxuan
AU - Dai, Hongxing
AU - Deng, Jiguang
AU - Liu, Yuxi
AU - Wang, Yuan
AU - Li, Xinwei
AU - Bai, Guangmei
AU - Gao, Baozu
AU - Au, Chak Tong
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 21077007), the Natural Science Foundation of Beijing Municipality (No. 2102008), the Discipline and Postgraduate Education Foundation (No. PXM2013 014204 07 000261, 005000542513551), the Creative Research Foundation of Beijing University of Technology (No. 00500054R4003, 005000543111501), and the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (No. PHR201007105, PHR201107104). CTAU thanks the Hong Kong Baptist University for financial support (No. FRG2/09-10/023). We also thank Mrs. Jianping He (State Key Laboratory of Advanced Metals & Materials, University of Science and Technology Beijing) for doing the SEM analysis.
PY - 2013/10/1
Y1 - 2013/10/1
N2 - Porous S-doped bismuth vanadate with an olive-like morphology and its supported iron oxide (y wt.% FeOx/BiVO4-δS0.08, y = 0.06, 0.76, and 1.40) photocatalysts were fabricated using the dodecylamine-assisted alcohol-hydrothermal and incipient wetness impregnation methods, respectively. It is shown that the y wt.% FeOx/BiVO4-δS0.08 photocatalysts contained a monoclinic scheetlite BiVO4 phase with a porous olive-like morphology, a surface area of 8.8-9.2 m2/g, and a bandgap energy of 2.38-2.42 eV. There was co-presence of surface Bi5+, Bi3+, V5+, V3+, Fe3+, and Fe2+ species in y wt.% FeOx/BiVO4-δS0.08. The 1.40 wt.% FeOx/BiVO4-δS0.08 sample performed the best for Methylene Blue degradation under visible-light illumination. The photocatalytic mechanism was also discussed. We believe that the sulfur and FeOx co-doping, higher oxygen adspecies concentration, and lower bandgap energy were responsible for the excellent visible-light-driven catalytic activity of 1.40 wt.% FeOx/BiVO4-δS0.08.
AB - Porous S-doped bismuth vanadate with an olive-like morphology and its supported iron oxide (y wt.% FeOx/BiVO4-δS0.08, y = 0.06, 0.76, and 1.40) photocatalysts were fabricated using the dodecylamine-assisted alcohol-hydrothermal and incipient wetness impregnation methods, respectively. It is shown that the y wt.% FeOx/BiVO4-δS0.08 photocatalysts contained a monoclinic scheetlite BiVO4 phase with a porous olive-like morphology, a surface area of 8.8-9.2 m2/g, and a bandgap energy of 2.38-2.42 eV. There was co-presence of surface Bi5+, Bi3+, V5+, V3+, Fe3+, and Fe2+ species in y wt.% FeOx/BiVO4-δS0.08. The 1.40 wt.% FeOx/BiVO4-δS0.08 sample performed the best for Methylene Blue degradation under visible-light illumination. The photocatalytic mechanism was also discussed. We believe that the sulfur and FeOx co-doping, higher oxygen adspecies concentration, and lower bandgap energy were responsible for the excellent visible-light-driven catalytic activity of 1.40 wt.% FeOx/BiVO4-δS0.08.
KW - Methylene Blue degradation
KW - Porous morphology
KW - Sulfur-doped bismuth vanadate
KW - Supported iron oxide
KW - Visible-light-driven photocatalyst
UR - http://www.scopus.com/inward/record.url?scp=84885355237&partnerID=8YFLogxK
U2 - 10.1016/S1001-0742(12)60279-4
DO - 10.1016/S1001-0742(12)60279-4
M3 - Journal article
C2 - 24494502
AN - SCOPUS:84885355237
SN - 1001-0742
VL - 25
SP - 2138
EP - 2149
JO - Journal of Environmental Sciences
JF - Journal of Environmental Sciences
IS - 10
ER -