Mokhtarifar Maryam, Kaveh Reyhaneh, Bagherzadeh Mojtaba, Lucotti Andrea, Pedeferri MariaPia, Diamanti Maria Vittoria
Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan 20133, Italy.
Department of Chemistry, Sharif University of Technology, Tehran 11365-11155, Iran.
ACS Appl Mater Interfaces. 2020 Jul 1;12(26):29671-29683. doi: 10.1021/acsami.0c06792. Epub 2020 Jun 18.
A novel nanohybrid composite of TiO, SiO, γ-FeO, and reduced graphene oxide (TiO@Si:Fe:rGO) is fabricated by the sol-gel method. The properties of the coated film were examined by structural and self-cleaning analyses using simulated discoloration/soiling and roofing tests. The fabricated transparent TiO@Si:Fe:rGO composite showed excellent photoactivity and wettability, behaving well in self-cleaning applications. The addition of SiO improved the crystalline structure and surface hydroxylation of TiO nanoparticles. γ-FeO decreased the recombination rate of e/h pairs, and significantly improved photocatalytic activity under visible light. Moreover, rGO sheets as excellent electron acceptors and transporters also reduced recombination, as well as affected wettability, achieving superhydrophilicity under irradiation. The coated substrate showed excellent resistance to simulated acid rain and significantly preserved the substrate from soiling in roofing tests.
通过溶胶 - 凝胶法制备了一种新型的由TiO、SiO、γ-FeO和还原氧化石墨烯组成的纳米杂化复合材料（TiO@Si:Fe:rGO）。使用模拟变色/污染和屋面测试通过结构和自清洁分析来检查涂层薄膜的性能。制备的透明TiO@Si:Fe:rGO复合材料表现出优异的光活性和润湿性，在自清洁应用中表现良好。SiO的添加改善了TiO纳米颗粒的晶体结构和表面羟基化。γ-FeO降低了e/h对的复合率，并显著提高了可见光下的光催化活性。此外，rGO片作为优异的电子受体和传输体也减少了复合，同时影响润湿性，在光照下实现超亲水性。涂覆的基材表现出优异的耐模拟酸雨性，并且在屋面测试中显著保护基材免受污染。
