TY - JOUR
T1 - Photochromism-based detection of volatile organic compounds by W-doped TiO 2 nanofibers
AU - Jin, Ming
AU - Zhang, Xintong
AU - Pu, Hongting
AU - Nishimoto, Shunsuke
AU - Murakami, Taketoshi
AU - Fujishima, Akira
N1 - Funding Information:
We thank Dr. Z.Z. Gu (Southeast University, China) for his helpful discussion. This work was supported by a Grand-in-Aid for Science Research on Priority Areas (417) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan and by the Core Research for Evolutional Science and Technology (CREST) Program of the Japan Science and Technology (JST) Agency. M.J. wishes to thank the Japan Society for the Promotion of Science (JSPS) for a Postdoctoral Fellowship. X.Z. thanks the support from National Natural Science Foundation of China (Grant No. 51072032).
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011/10/1
Y1 - 2011/10/1
N2 - W-doped TiO 2 nanofibers with various compositions (W/Ti: 2-8%) were fabricated by the electrospinning method from respective precursor solutions containing tungsten(V) pentaethoxide, titanium tetraisopropoxide (TTIP), and polyvinylpyrrolidone (PVP), followed with calcination at 550°C. Morphological and structural characteristics of these nanofibers were studied with SEM, XRD and XPS. W-doping inhibited the crystal growth and anatase-to-rutile transformation of TiO 2 nanofibers. W-doped TiO 2 nanofiber mats showed good photocatalytic oxidation abilities for acetone. Obvious color change from white to blue of mats during the photocatalysis process can be detected by naked eyes, which provides a good way in detection of pollutants in indoor air, especially for the volatile organic compounds (VOCs).
AB - W-doped TiO 2 nanofibers with various compositions (W/Ti: 2-8%) were fabricated by the electrospinning method from respective precursor solutions containing tungsten(V) pentaethoxide, titanium tetraisopropoxide (TTIP), and polyvinylpyrrolidone (PVP), followed with calcination at 550°C. Morphological and structural characteristics of these nanofibers were studied with SEM, XRD and XPS. W-doping inhibited the crystal growth and anatase-to-rutile transformation of TiO 2 nanofibers. W-doped TiO 2 nanofiber mats showed good photocatalytic oxidation abilities for acetone. Obvious color change from white to blue of mats during the photocatalysis process can be detected by naked eyes, which provides a good way in detection of pollutants in indoor air, especially for the volatile organic compounds (VOCs).
KW - Photocatalyst
KW - Photocatalytic oxidation
KW - Photochromism
KW - TiO nanofiber
KW - Volatile organic compounds
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U2 - 10.1016/j.jcis.2011.06.041
DO - 10.1016/j.jcis.2011.06.041
M3 - Article
C2 - 21741658
AN - SCOPUS:79960836352
VL - 362
SP - 188
EP - 193
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
IS - 1
ER -