Abstract
A flower-like BiVO4 microsphere photocatalyst was synthesized with a simple template-free homogeneous precipitation method at 60 °C for 24 h. The purpose of this study is to explore a low-cost, simple method of synthesizing the self-assembled 3D structure in order to enhance photocatalytic performance under visible light irradiation (λ > 420 nm). In this study, the morphology, structure, and photo-absorption of flower-like BiVO4 microspheres were characterized, and the effects of photocatalysis were analyzed. The results indicate that the size of the flower-like microspheres was about 2 μm to 4 μm and they were composed of several nanosheets. The mechanism of hierarchical microsphere formation has been proposed as the Ostwald ripening process and the self-assembled process. The obtained samples were calcined under different temperatures (300 °C, 400 °C, 500 °C and 600 °C) to study the effects of calcination on the structure and on photocatalysis. The photocatalytic process was then evaluated by decolorization of methylene blue dye under visible-light irradiation.
| Original language | English |
|---|---|
| Article number | 216 |
| Journal | Applied Sciences (Switzerland) |
| Volume | 8 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2018 Jan 31 |
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Keywords
- Bismuth vanadate
- Low-cost method
- Methylene blue dye
- Microspheres
- Photocatalyst
- Visible light
ASJC Scopus subject areas
- Materials Science(all)
- Instrumentation
- Engineering(all)
- Process Chemistry and Technology
- Computer Science Applications
- Fluid Flow and Transfer Processes
Cite this
Flower-like BiVO4 microspheres and their visible light-driven photocatalytic activity. / Zulkifili, Arini Nuran; Fujiki, Akira; Kimijima, Shinji.
In: Applied Sciences (Switzerland), Vol. 8, No. 2, 216, 31.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flower-like BiVO4 microspheres and their visible light-driven photocatalytic activity
AU - Zulkifili, Arini Nuran
AU - Fujiki, Akira
AU - Kimijima, Shinji
PY - 2018/1/31
Y1 - 2018/1/31
N2 - A flower-like BiVO4 microsphere photocatalyst was synthesized with a simple template-free homogeneous precipitation method at 60 °C for 24 h. The purpose of this study is to explore a low-cost, simple method of synthesizing the self-assembled 3D structure in order to enhance photocatalytic performance under visible light irradiation (λ > 420 nm). In this study, the morphology, structure, and photo-absorption of flower-like BiVO4 microspheres were characterized, and the effects of photocatalysis were analyzed. The results indicate that the size of the flower-like microspheres was about 2 μm to 4 μm and they were composed of several nanosheets. The mechanism of hierarchical microsphere formation has been proposed as the Ostwald ripening process and the self-assembled process. The obtained samples were calcined under different temperatures (300 °C, 400 °C, 500 °C and 600 °C) to study the effects of calcination on the structure and on photocatalysis. The photocatalytic process was then evaluated by decolorization of methylene blue dye under visible-light irradiation.
AB - A flower-like BiVO4 microsphere photocatalyst was synthesized with a simple template-free homogeneous precipitation method at 60 °C for 24 h. The purpose of this study is to explore a low-cost, simple method of synthesizing the self-assembled 3D structure in order to enhance photocatalytic performance under visible light irradiation (λ > 420 nm). In this study, the morphology, structure, and photo-absorption of flower-like BiVO4 microspheres were characterized, and the effects of photocatalysis were analyzed. The results indicate that the size of the flower-like microspheres was about 2 μm to 4 μm and they were composed of several nanosheets. The mechanism of hierarchical microsphere formation has been proposed as the Ostwald ripening process and the self-assembled process. The obtained samples were calcined under different temperatures (300 °C, 400 °C, 500 °C and 600 °C) to study the effects of calcination on the structure and on photocatalysis. The photocatalytic process was then evaluated by decolorization of methylene blue dye under visible-light irradiation.
KW - Bismuth vanadate
KW - Low-cost method
KW - Methylene blue dye
KW - Microspheres
KW - Photocatalyst
KW - Visible light
UR - http://www.scopus.com/inward/record.url?scp=85041579342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041579342&partnerID=8YFLogxK
U2 - 10.3390/app8020216
DO - 10.3390/app8020216
M3 - Article
AN - SCOPUS:85041579342
VL - 8
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
SN - 2076-3417
IS - 2
M1 - 216
ER -