TY - GEN
T1 - The effects of solvents on the solvothermal synthesis of BiVO4 photocatalyst powders
AU - Thanomsri, N.
AU - Mongkolkachit, C.
AU - Sato, Tsugio
AU - Wu, X.
AU - Sujaridworakun, P.
N1 - Funding Information:
This research has been supported by the Ratchadaphiseksomphot Endowment Fund 2013 of Chulalongkorn University (CU-56-437-AM), Japan Student Services Organization (JASSO), Institute of Multidisciplinary Research for Advanced Materials, Tohoku University and Thailand Graduate Institute of Science and Technology (TGIST), National Science and Technology Development Agency.
Publisher Copyright:
© (2015) Trans Tech Publications, Switzerland.
PY - 2015
Y1 - 2015
N2 - In this study, the effects of different solvents for instance; ethanol, ethylene glycol, glycerol on the preparation of BiVO4 via solvothermal process, and the influence of calcination heat treatment were studied. The crystal structure, surface area, morphology and optical properties of the obtained BiVO4 particles were investigated by means of X-ray Diffraction (XRD), Brunauer Emmett Teller method (BET), Scanning electron microscope (SEM) and UV-Vis reflectance spectroscopy (UV-Vis DRS), respectively. XRD patterns reveal that all of the obtained BiVO4 samples prepared by solvothermal at 130°C for 4 h have monoclinic structure. The UV-Vis DRS demonstrates that the band gaps of prepared BiVO4 are about 2.38-2.40 eV. The photocatalytic activity was evaluated by photo-degradation of rhodamine B (rhB) solution under visible light irradiation (λ>420 nm). As the results, the BiVO4 prepared by using ethanol having high crystallinity and surface area showed the highest visible light photocatalytic activity compared to using glycerol and ethylene glycol, respectively. Furthermore, the photocatalytic activity of BiVO4 prepared by using ethylene glycol and glycerol could be enhanced by calcination heat treatment at 500°C for 2 h.
AB - In this study, the effects of different solvents for instance; ethanol, ethylene glycol, glycerol on the preparation of BiVO4 via solvothermal process, and the influence of calcination heat treatment were studied. The crystal structure, surface area, morphology and optical properties of the obtained BiVO4 particles were investigated by means of X-ray Diffraction (XRD), Brunauer Emmett Teller method (BET), Scanning electron microscope (SEM) and UV-Vis reflectance spectroscopy (UV-Vis DRS), respectively. XRD patterns reveal that all of the obtained BiVO4 samples prepared by solvothermal at 130°C for 4 h have monoclinic structure. The UV-Vis DRS demonstrates that the band gaps of prepared BiVO4 are about 2.38-2.40 eV. The photocatalytic activity was evaluated by photo-degradation of rhodamine B (rhB) solution under visible light irradiation (λ>420 nm). As the results, the BiVO4 prepared by using ethanol having high crystallinity and surface area showed the highest visible light photocatalytic activity compared to using glycerol and ethylene glycol, respectively. Furthermore, the photocatalytic activity of BiVO4 prepared by using ethylene glycol and glycerol could be enhanced by calcination heat treatment at 500°C for 2 h.
KW - Bismuth vanadate
KW - Ethanol
KW - Photocatalyst
KW - Rhodamine B
KW - Solvothermal process
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UR - http://www.scopus.com/inward/citedby.url?scp=84952318741&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.659.154
DO - 10.4028/www.scientific.net/KEM.659.154
M3 - Conference contribution
AN - SCOPUS:84952318741
SN - 9783038355526
T3 - Key Engineering Materials
SP - 154
EP - 158
BT - Materials Science and Technology VIII
A2 - Pinwanich, Peerapong
PB - Trans Tech Publications Ltd
T2 - 8th International Conference on Materials Science and Technology, MSAT 2014
Y2 - 15 December 2014 through 16 December 2014
ER -