Acrylate boron silane polymer/carbon nitride–titanium dioxide composite coatings with enhancing photocatalytic antifouling performance under visible light / Yakun Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 4 (07/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 4 (07/2023) . - p. 1445-1458 Titre : Acrylate boron silane polymer/carbon nitride–titanium dioxide composite coatings with enhancing photocatalytic antifouling performance under visible light Type de document : texte imprimé Auteurs : Yakun Li, Auteur ; Jianjun Liao, Auteur ; Haiqi Zhang, Auteur ; Xingsan Tang, Auteur ; Shiqiang Zhong, Auteur ; Qiuxia Li, Auteur Année de publication : 2023 Article en page(s) : p. 1445-1458 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Copolymère acrylate de bore silane Dioxyde de titane Formulation (Génie chimique) Nitrure de carbone Photocatalyse Revêtement auto-nettoyant Revêtements antisalissures Index. décimale : 667.9 Revêtements et enduits Résumé : Herein, a series of antifouling coatings (CTNCs) composed of acrylic boron silicon polymer (ABSP) and environmental-friendly photocatalysts C3N4-TiO2(B) heterojunctions were successfully prepared. Large-scale production and low-cost photocatalyst C3N4-TiO2(B) can be perfectly compounded with ABSP, realizing the possibility of engineering application. SEM and AFM analysis showed that the C3N4-TiO2(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 C3N4-TiO2(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 C3N4, and the anti-bacterial rates towards S. aureus and E. coli can reach 99.72% and 98.96%. Note de contenu : - EXPERIMENTAL SECTION : - Materials - Preparation of TiO 2 (B) single-crystalline nanorods - Preparation of C 3 N 4 -TiO 2 (B) - Synthesis of ABSP - Preparation of CTNCs - Characterization - RESULTS AND DISCUSSION : - Structural characteristics of C 3 N 4 –TiO 2 (B) heterojunction - Surface chemical states of C3N4-TiO2 heterojunction - Surface morphology of CTNCs - Surface wettability and self-polishing rates of CTNCs - Diatom antisettling test - Anti-bacterial test - Environmental properties - Antifouling mechanism of CTNCs - Table 1 : The preparation formula of CTNCs DOI : https://doi.org/10.1007/s11998-022-00757-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00757-0.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39728 [article]

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