TY - JOUR
T1 - Multifunctionality in coating films including Nb-doped TiO2 and CsxWO3
T2 - Near infrared shielding and photocatalytic properties
AU - Asakura, Yusuke
AU - Anada, Yuto
AU - Hamanaka, Ryo
AU - Sato, Tsugio
AU - Katsumata, Ken Ichi
AU - Wu, Xiaoyong
AU - Yin, Shu
N1 - Funding Information:
This work was partly supported by the JSPS Grant-in-Aid for Scientific Research on Innovative Areas ‘Mixed anion’ (No. JP16H06439) and for Young Scientists (B) (No. 17K14542), and by the Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials in Network Joint Research Center for Materials and Devices.
Funding Information:
This work was partly supported by the JSPS Grant-in-Aid for Scientific Research on Innovative Areas Mixed anion (No. JP16H06439) and for Young Scientists (B) (No. 17K14542), and by the Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials in Network Joint Research Center for Materials and Devices.
Publisher Copyright:
© 2018 IOP Publishing Ltd.
PY - 2018/3/29
Y1 - 2018/3/29
N2 - Various types of coating films were obtained from hydrothermally synthesized Nb-doped TiO2 (NTO) and CsxWO3 (CWO) nanoparticles. The coating films possessed multifunctionality including near infrared (NIR) absorption and photocatalysis abilities. The NTO and CWO nanoparticles were synthesized by a unique solvothermal reaction in which water induced by an esterification reaction between alcohol and carboxylic acid can act as a hydrolyzing agent for metal precursors. NTO was synthesized by the unique solvothermal reaction for the first time. The reaction accompanied by the reduction of Ti4+ to Ti3+ led to the formation of nanoparticles with both NIR absorption and photocatalytic properties. The effect of the ethanol-acetic acid ratio on the morphology of the obtained NTO was investigated, and the larger amount of acetic acid led to a larger nanoparticle size, indicating the size controllability. The two types of coating film, including CWO and NTO nanoparticles, were obtained for comparison: (1) coexistent coating film: one side of the quartz glass was coated with a dispersion, including both CWO and NTO nanoparticles, and (2) double-sided coating film: a quartz glass coated with a CWO dispersion on one side and an NTO dispersion on the other side. The double-sided coating led to higher multifunctionality. Furthermore, the optimized condition for the double-sided coating was investigated by using various NTO particles obtained using different ethanol-acetic acid ratios.
AB - Various types of coating films were obtained from hydrothermally synthesized Nb-doped TiO2 (NTO) and CsxWO3 (CWO) nanoparticles. The coating films possessed multifunctionality including near infrared (NIR) absorption and photocatalysis abilities. The NTO and CWO nanoparticles were synthesized by a unique solvothermal reaction in which water induced by an esterification reaction between alcohol and carboxylic acid can act as a hydrolyzing agent for metal precursors. NTO was synthesized by the unique solvothermal reaction for the first time. The reaction accompanied by the reduction of Ti4+ to Ti3+ led to the formation of nanoparticles with both NIR absorption and photocatalytic properties. The effect of the ethanol-acetic acid ratio on the morphology of the obtained NTO was investigated, and the larger amount of acetic acid led to a larger nanoparticle size, indicating the size controllability. The two types of coating film, including CWO and NTO nanoparticles, were obtained for comparison: (1) coexistent coating film: one side of the quartz glass was coated with a dispersion, including both CWO and NTO nanoparticles, and (2) double-sided coating film: a quartz glass coated with a CWO dispersion on one side and an NTO dispersion on the other side. The double-sided coating led to higher multifunctionality. Furthermore, the optimized condition for the double-sided coating was investigated by using various NTO particles obtained using different ethanol-acetic acid ratios.
KW - CsWO
KW - Nb-doped TiO
KW - multifunctional coating
KW - near infrared shielding
KW - photocatalytic NOx decomposition
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U2 - 10.1088/1361-6528/aab600
DO - 10.1088/1361-6528/aab600
M3 - Article
C2 - 29528844
AN - SCOPUS:85045555346
SN - 0957-4484
VL - 29
JO - Nanotechnology
JF - Nanotechnology
IS - 22
M1 - 224001
ER -