TY - JOUR
T1 - Preparation of TiO2 Superhydrophobic Composite Coating and Studies on Corrosion Resistance
AU - Zhou, Chaogang
AU - Chen, Qiya
AU - Chen, Qinggong
AU - Yin, Huawei
AU - Wang, Shuhuan
AU - Hu, Chuanbo
N1 - The authors are grateful for the financial support of this work from the National Natural Science Foundation of China (No. 52074128), the Natural Science Foundation of Chongqing (No. cstc2021jcyj-msxmX1139), the Science and Technology Research Program of Chongqing Municipal Education Commission (Nos. KJQN201901228 and KJQN202001234), and the Basic Scientific Research Business Fee Project of Hebei Provincial Colleges and Universities (No. JYG2022001).
Publisher Copyright:
Copyright © 2022 Zhou, Chen, Chen, Yin, Wang and Hu.
PY - 2022/7/8
Y1 - 2022/7/8
N2 - The superhydrophobic coatings with excellent performance are prepared on the brass substrate to improve its application limitations in real production. In this article, the superhydrophobicity was obtained by the modification of TiO2 nanoparticles, and the FAS/STA-TiO2 superhydrophobic coating of the composite structure was obtained by modification of 1, 1, 2H, 2H-perfluoroquine trimethyl silane (FAS). By using scanning electron microscopes (SEMs), X-ray spectrometers (EDSs), and Fourier transform infrared (FTIR) spectrometers, the surface morphology, chemical composition, and functional group structure of the samples were analyzed in turn. Experiments show that the water contact angle of the FAS-modified STA-TiO2 coating reaches 161.3°, and the sliding angle is close to 1.2°. Based on the chalk dust containment, it has enabled noticeable self-cleaning properties. The composite superhydrophobic coating also presents enhanced adhesive strength compared with the single coating by the tape peeling experiment. Moreover, the composite coating has a corrosion current density as low as 8.41 × 10-7 A/cm2, and the largest |Z| in low frequency in a 3.5% NaCl solution to achieve better protection of the brass substrate. It is also not difficult to see that FAS/STA-TiO2 coating can not only improve the corrosion resistance of brass substrates but also be applied to other metal substrates.
AB - The superhydrophobic coatings with excellent performance are prepared on the brass substrate to improve its application limitations in real production. In this article, the superhydrophobicity was obtained by the modification of TiO2 nanoparticles, and the FAS/STA-TiO2 superhydrophobic coating of the composite structure was obtained by modification of 1, 1, 2H, 2H-perfluoroquine trimethyl silane (FAS). By using scanning electron microscopes (SEMs), X-ray spectrometers (EDSs), and Fourier transform infrared (FTIR) spectrometers, the surface morphology, chemical composition, and functional group structure of the samples were analyzed in turn. Experiments show that the water contact angle of the FAS-modified STA-TiO2 coating reaches 161.3°, and the sliding angle is close to 1.2°. Based on the chalk dust containment, it has enabled noticeable self-cleaning properties. The composite superhydrophobic coating also presents enhanced adhesive strength compared with the single coating by the tape peeling experiment. Moreover, the composite coating has a corrosion current density as low as 8.41 × 10-7 A/cm2, and the largest |Z| in low frequency in a 3.5% NaCl solution to achieve better protection of the brass substrate. It is also not difficult to see that FAS/STA-TiO2 coating can not only improve the corrosion resistance of brass substrates but also be applied to other metal substrates.
KW - coating
KW - corrosion resistance
KW - self-cleaning
KW - superhydrophobic
KW - wettability
UR - http://www.scopus.com/inward/record.url?scp=85134569631&partnerID=8YFLogxK
U2 - 10.3389/fchem.2022.943055
DO - 10.3389/fchem.2022.943055
M3 - Journal article
AN - SCOPUS:85134569631
SN - 2296-2646
VL - 10
JO - Frontiers in Chemistry
JF - Frontiers in Chemistry
M1 - 943055
ER -