TY - JOUR
T1 - Synthesis of brookite-type TiO2 nanoparticles by emulsion-assisted hydrothermal method using titanium glycolate complex
AU - Kasuya, Kohei
AU - Shahiduzzaman, Md
AU - Kobayashi, Makoto
AU - Yin, Shu
AU - Kakihana, Masato
AU - Tomita, Koji
N1 - Funding Information:
Acknowledgements This study was supported by the Research and Study Project of Tokai University General Research Organization and the Research Program for Next Generation Young Scientists of “Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials” in “Network Joint Research Center for Materials Devices.” TEM observations were supported by Tokyo City University Nanotechnology Research Center for Analysis.
Publisher Copyright:
© 2021 The Ceramic Society of Japan.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - We present a method for synthesizing brookite-type titanium dioxide (TiO2) using an emulsion-assisted hydrothermal approach and a water-soluble titanium complex with glycolic acid as a complexing agent. In this study, stirred hydrothermal synthesis was used to synthesize water-in-oil emulsions with titanium glycolate complex in the aqueous phase. The resulting brookite-type TiO2 was investigated using Raman spectroscopy for crystal polymorph identification, X-ray Diffraction to identify crystal polymorphs and crystallite size, Transmission Electron Microscope for primary particle size, and crystal shape, and Dynamic Light Scattering for TiO2 secondary particle size in aqueous dispersion. The synthesized brookite-type TiO2 was a needle-like crystal with a width between 20 and 30nm and a length of more than 70 nm, growing in the b-axis direction at an angle of about 70?from the (120) plane. Furthermore, compared to the conventional synthesis method, the secondary particle size was smaller, and the dispersibility in water was improved. The results show that the brookite-type TiO2 dispersion obtained using the emulsion-assisted hydrothermal method can facilitate the formation of uniform films and can be applied to the electron transport layer of organic perovskite solar cells.
AB - We present a method for synthesizing brookite-type titanium dioxide (TiO2) using an emulsion-assisted hydrothermal approach and a water-soluble titanium complex with glycolic acid as a complexing agent. In this study, stirred hydrothermal synthesis was used to synthesize water-in-oil emulsions with titanium glycolate complex in the aqueous phase. The resulting brookite-type TiO2 was investigated using Raman spectroscopy for crystal polymorph identification, X-ray Diffraction to identify crystal polymorphs and crystallite size, Transmission Electron Microscope for primary particle size, and crystal shape, and Dynamic Light Scattering for TiO2 secondary particle size in aqueous dispersion. The synthesized brookite-type TiO2 was a needle-like crystal with a width between 20 and 30nm and a length of more than 70 nm, growing in the b-axis direction at an angle of about 70?from the (120) plane. Furthermore, compared to the conventional synthesis method, the secondary particle size was smaller, and the dispersibility in water was improved. The results show that the brookite-type TiO2 dispersion obtained using the emulsion-assisted hydrothermal method can facilitate the formation of uniform films and can be applied to the electron transport layer of organic perovskite solar cells.
KW - Brookite
KW - Emulsion
KW - Hydrothermal method
KW - Nanoparticles
KW - Titanium dioxide
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U2 - 10.2109/jcersj2.21127
DO - 10.2109/jcersj2.21127
M3 - Article
AN - SCOPUS:85121145671
SN - 1882-0743
VL - 129
SP - 720
EP - 724
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
IS - 12
ER -