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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Super-structural 2D ultrathin carbon nitride/acrylate boron silane polymer with multi-function for enhancing antifouling performance / Yakun Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - 1051-1064 Titre : Super-structural 2D ultrathin carbon nitride/acrylate boron silane polymer with multi-function for enhancing antifouling performance Type de document : texte imprimé Auteurs : Yakun Li, Auteur ; Jianjun Liao, Auteur ; Haiqi Zhang, Auteur ; Xingsan Tang, Auteur ; Shiqiang Zhong, Auteur ; Youguo Yu, Auteur ; Qiuxia Li, Auteur Année de publication : 2021 Article en page(s) : 1051-1064 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acrylate de bore Antibactériens Caractérisation Mouillabilité Nitrure de carbone Polymères -- Synthèse Revêtement auto-nettoyant Revêtements antisalissures Revêtements organiques Silane de bore Surfaces (Physique) Index. décimale : 667.9 Revêtements et enduits Résumé : Haunted by marine biofouling and the ecological crisis caused by toxic antifouling paints, the demand for environmental coatings has become more and more pressing. In this work, a series of super-structural 2D ultrathin carbon nitride/acrylate boron silane polymers (CNPs) was prepared by incorporating C3N4 into a self-polishing acrylate boron silane polymer (ABSP). The antifouling, environmental performances were evaluated, and the antifouling mechanism was investigated. The results showed that when the content of C3N4 was 3–7 wt%, the coatings showed the best resistance to diatoms, Staphylococcus aureus and Escherichia coli in visible light. It was noted that the coatings showed weak antibacterial properties in the dark. In addition, the CNPs and ABSP were shown to expel mussels by photocatalytic active species, self-renewal and amphiphilic surfaces. The chemical oxygen demand (COD) values showed that the addition of C3N4 made the CNPs become environmental coatings. Note de contenu : - EXPERIMENTAL : Materials - Preparation of sheet-like ultrathin C3N4 particles - Synthesis of ABSP - Preparation of CNPs - Characterization - RESULTS AND DISCUSSION : Surface topography of CNPs film - Surface wettability and surface charge properties of CNPs - Thickness and diatom antisettling test - Environmental performance of CNPs - Photocatalytic antibacterial experiments - Mussel settlement assay - Photocatalytic antibacterial mechanism of CNPs films DOI : https://doi.org/10.1007/s11998-021-00459-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00459-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36211 [article]

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