Study of the effect of TiO 2 /polyaniline nanocomposite on the self-cleaning property of polyacrylic latex coating

Nosrati, Rahimeh; Olad, Ali; Najjari, Hamideh

doi:10.1016/j.surfcoat.2017.03.027

Cited by 27 publications

(7 citation statements)

References 35 publications

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“…The vulnerability of Gram‐positive bacteria to the antibacterial agent seems reasonable by consideration of this fact that the presence of an additional bilayer phospholipid membrane in Gram‐negative bacteria makes it less susceptible to structural damages. Because this membrane acts as a permeability barrier, hence cell uptake is reduced and negative effects on bacteria induced by PANI‐CS modified TiO 2 nanocomposite will somewhat be prevented . The observed outstanding biocide performance could be explained by the inhibitory effect of TiO 2 nanoparticles combined with the remarkable antimicrobial properties of CS.…”

Section: Resultsmentioning

confidence: 99%

PANI‐chitosan‐TiO₂ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

Mirmohseni

Rastgar

Olad

2019

J of Applied Polymer Sci

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A straightforward approach has been developed for fabricating antibacterial and antistatic epoxy coatings by using polyanilinechitosan modified TiO 2 ternary nanocomposite. This nanocomposite was synthesized through the following steps. First, chitosan was grafted onto the TiO 2 nanoparticles and then final nanocomposite was prepared via solution polymerization of aniline. Electrical conductivity measurement revealed that nanocomposite with 7.5 wt % of the modified TiO 2 nanoparticles has noticeably higher conductivity compared to polyaniline. Evaluating the coatings' antibacterial property indicated epoxy coatings with the content of ternary nanocomposite show significant bactericidal activity against Gram-positive bacteria and have acceptable antibacterial action against Gram-negative ones. Also, obtained results showed that the ternary nanocomposite would greatly decrease coatings' surface resistivity and when nanocomposite content is about 2 wt % surface resistivity is about 3 × 10 7 Ω sq −1 . On the contrary, the coating with nanocomposite loading exhibits improved thermal and mechanical performance compared to the coating made of neat epoxy.

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Section: Resultsmentioning

confidence: 99%

PANI‐chitosan‐TiO₂ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

Mirmohseni

Rastgar

Olad

2019

J of Applied Polymer Sci

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“…The materials that are cotton fabric-based used in photocatalysis often bear TiO 2 nanoparticles which are known as an excellent catalyst under UV light (Stan et al, 2018;Mishra and Butola, 2018;Nosrati, Olad and Najjari, 2017). ZnO nanaostructure has also been widely used in the same field of application; it represents an alternative thanks to its wide gap (3.37 eV), exciton binding energy (60 meV) and its low price (Zhu et al, 2017).…”

Section: Photocatalytic Activitymentioning

confidence: 99%

“…Nanocomposites such as TiO -PANI-based cotton fabric have also been used in photocatalysis, the materials exhibits better photocatalytic activity thanks to the synergistic effect at the TiO 2 //PANI interface. (Nosrati, Olad and Najjari, 2017; Kumar and Pandey, 2018).…”

Section: Photocatalytic Activitymentioning

confidence: 99%

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Mixed oxide-polyaniline composite-coated woven cotton fabrics for the visible light catalyzed degradation of hazardous organic pollutants

et al. 2020

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Clean water and sea free of organic pollutants are among the 17 United Nation Sustainable Development Goals (SDGs). In this global concern, the design of efficient, stable and recyclable catalytic materials remains challenging. In this context, we designed a series of mixed oxide-modified cotton fabrics and their related composites and interrogated their propensity to catalyze the degradation of methyl orange (MO) (a model pollutant). More specifically, functional cotton fabrics (CF) coated with RuO 2 -TiO 2 based-photocatalysts were obtained by dip-coating method at neutral pH. A layer of Polyaniline (PANI) was prepared by in situ oxidative polymerization of the aniline monomer on 4-diphenylamine diazonium salt (DPA) modified-RuO 2 -TiO 2 nanoparticles (NPs) coated-CF. The modified CFs catalyzed photodegradation and mineralization of MO under visible light, which depended on polyaniline mass loading. The CF/RuO 2 -TiO 2 /DPA@PANI obtained by in situ polymerization was the best catalyst due to DPA adhesive layer for polyaniline to RuO 2 -TiO 2 , and the strong attraction force between cellulose OH groups and anilinium during polymerization. The photodegradation rate constant was 0.101, 0.0532, 0.0775 and 0.0828 min -1 for RuO 2 -TiO 2 /DPA@PANI, RuO 2 -TiO 2 , RuO 2 -TiO 2 /PANI and RuO 2 -TiO 2 /DPA/PANI coated-CFs, respectively. The catalytic activity is favored by the photoactive species (OH  , 2 − ) which are formed by the excitation of electrons under visible light but also by the electronic exchanges at the RuO 2 //TiO 2 , RuO 2 -TiO 2 //PANI and RuO 2 -TiO 2 /PANI//CF interfaces.CF/RuO 2 -TiO 2 /DPA/PANI photocatalyst was stable under simulated sunlight and reusable three times. A mechanism is proposed to account for the efficient CF catalytic properties.

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“…Titanium dioxide prevents the impregnation of dirt when exposed to solar irradiation [13]. Studies have shown that TiO 2 is a hydroxyl with photocatalytic and hygroscopic properties whose chemical reactions, when mixed in GRC, are accelerated under UV radiation [14]. Photocatalysis emulates natural photosynthesis adsorbed and contributes to the separation of electron pairs [15,16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Self-Cleaning Potential of Glass Fiber Reinforced Concrete (GRC) with TiO2 Nanoparticles

et al. 2022

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The materials used in civil construction are undergoing significant advances to achieve reduced maintenance and increased durability. This study analyzed the self-cleaning potential of Glass fiber Reinforced Concrete (GRC) with the addition of titanium dioxide (TiO2) in contents of 3, 5, and 7% with respect to the mass of cement. We evaluated the self-cleaning GRC plates and the compressive and flexural strength of cylindrical and prismatic specimens. Prepared GRC sample plates were stained with dye solution (rhodamine B and methylene blue) and exposed to the four cardinal solar orientations of a building façade (north, south, east, and west) at different inclination angles (0°, 45°, and 90°) with respect to ground level. Results showed that the samples that presented the greatest performance were plates positioned in a north orientation and inclined at 0° in relation to ground level. The inclusion of TiO2 positively affected the consistency of the mixtures and improved the properties of the GRC in the hardened state. Measured rupture stresses were greater than 100 MPa in compressive strength and 20 MPa in flexure. The results of this study showed that the introduction of TiO2 in concrete with high strengths did have great relevance for the self-cleaning of white concrete.

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Study of the effect of TiO 2 /polyaniline nanocomposite on the self-cleaning property of polyacrylic latex coating

Cited by 27 publications

References 35 publications

PANI‐chitosan‐TiO₂ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

PANI‐chitosan‐TiO₂ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

Mixed oxide-polyaniline composite-coated woven cotton fabrics for the visible light catalyzed degradation of hazardous organic pollutants

Analysis of the Self-Cleaning Potential of Glass Fiber Reinforced Concrete (GRC) with TiO2 Nanoparticles

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Study of the effect of TiO 2 /polyaniline nanocomposite on the self-cleaning property of polyacrylic latex coating

Cited by 27 publications

References 35 publications

PANI‐chitosan‐TiO2ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

PANI‐chitosan‐TiO2ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

Mixed oxide-polyaniline composite-coated woven cotton fabrics for the visible light catalyzed degradation of hazardous organic pollutants

Analysis of the Self-Cleaning Potential of Glass Fiber Reinforced Concrete (GRC) with TiO2 Nanoparticles

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PANI‐chitosan‐TiO₂ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

PANI‐chitosan‐TiO₂ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating