Acrylate boron silane polymer/carbon nitride–titanium dioxide composite coatings with enhancing photocatalytic antifouling performance under visible light

• Published in: JCT research Vol. 20; no. 4; pp. 1445 - 1458
• Main Authors: Li, Yakun, Liao, Jianjun, Zhang, Haiqi, Tang, Xingsan, Zhong, Shiqiang, Li, Qiuxia
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2023; Springer Nature B.V
• Subjects: Antifouling coatings; Bacteria; Boron; Carbon nitride; Chemistry and Materials Science; Coatings; Corrosion and Coatings; E coli; Heterojunctions; Industrial Chemistry/Chemical Engineering; Materials Science; Nanoparticles; Photocatalysis; Photocatalysts; Polymer Sciences; Silicon polymers; Surfaces and Interfaces; Thin Films; Titanium dioxide; Tribology; ABSP; B; Self-renewal; C; Self-cleaning property; TiO; N
• ISSN: 1547-0091; 1935-3804; 2168-8028
• DOI: 10.1007/s11998-022-00757-0

Herein, a series of antifouling coatings (CTNCs) composed of acrylic boron silicon polymer (ABSP) and environmental-friendly photocatalysts C 3 N 4 -TiO 2 (B) heterojunctions were successfully prepared. Large-scale production and low-cost photocatalyst C 3 N 4 -TiO 2 (B) can be perfectly compounded with ABSP, realizing the possibility of engineering application. SEM and AFM analysis showed that the C 3 N 4 -TiO 2 (B) particles were firmly embedded in the coating, but serious agglomeration appeared when the content of the photocatalyst exceeds 7 wt%. The hydrophilic nanoparticles can accelerate the hydrolysis and adjust the self-polishing rates of the polymer matrix to repel bacteria and algae. When the content of C 3 N 4 -TiO 2 (B) was in the range of 5–7 wt%, the CTNCs displayed better resistance to Nitzschia closterium , Staphylococcus aureus and Escherichia coli than the coating containing pure C 3 N 4 , and the anti-bacterial rates towards S. aureus and E. coli can reach 99.72% and 98.96%.