A chitosan/dopamine-TiO2 composite nanofiltration membrane for antifouling in water purification

Wang, Dong; Lin, Junkang; Huang, Jianhua; Zhang, Hui; Lin, Shan; Chen, Lihui; Ni, Yonghao; Huang, Liulian

doi:10.1007/s10570-021-03845-3

Cited by 18 publications

(2 citation statements)

References 59 publications

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“…Figure 3B displays XRD of pure chitosan with two main peaks located at 2θ＝10.55° and 20.36° back to hydrate structure and amorphous nature, respectively. It also shows an orthorhombic crystal structure and unit cell dimensions a＝0.829, b＝0.861, and c＝1.043 nm, and containing four glucosamine units formed by an intermolecular hydrogen bond between N2 with O6 and O3 with O5 33) . Figure 3C shows the XRD of the binary CS/TiO 2 nanocomposite.…”

Section: Characterizationmentioning

confidence: 99%

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

et al. 2023

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materials have been studied to remove the deadly heavy metals from wastewaters, which is one of the promising sustainable mitigation methods 6) . Chromium ions and other heavy metals were removed using a variety of methods, such as adsorption 7,8) , membrane filtering 9) , advanced oxidation 10) , and precipitation 11,12) . Due to its low cost and economy, adsorption is a suitable method for reducing the level of Cr ions. Its effectiveness is dependent on the number of sites that can be combined with adsorbate ions 13) . Nanocomposites produced by the photolysis technique 14−22) are viable options for the adsorption of certain heavy metals from water 23−25) due to their higher specific area and porosity. Heavy metal reduction or removal from water can be accomplished using chitosan-based nanoparticles as an effective catalyst (adsorbate) 26,27) . Chitosan nanosheets have recently been suggested for use in several wastewater treatment processes 28) . Additionally, chitosan s matrix was doped with or mixed with inorganic nanoparticles like TiO 2 and ferrite. For instance, TiO 2 was integrated into CS nanosheets to absorb heavy ions from wastewater.

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Section: Characterizationmentioning

confidence: 99%

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

et al. 2023

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“…Previously, ZnO-SnO x core-shell nanorods or nanoparticles have been reported in such applications as optical instruments [26,27] and gas-sensing devices [28,29]. Chitosan-inorganic photocatalyst composites for the visible light-driven decontamination of wastewater, and for antimicrobial or antifouling applications using noble metals, metal oxides or metal chalcogenides in chitosan as support, are also reported [30][31][32]. However, the investigation of ZnO-SnO x core-shell nanostructures as chemically resistant photocatalytic anti-fouling materials has not been carried out.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Nanocomposite Coatings Containing Chemically Resistant ZnO–SnOx Core–shell Nanoparticles for Photocatalytic Antifouling

Kumar

Mazinani

et al. 2021

IJMS

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Functional nanocomposites with biopolymers and zinc oxide (ZnO) nanoparticles is an emerging application of photocatalysis in antifouling coatings. The reduced chemical stability of ZnO in the acidic media in which chitosan is soluble affects the performance of chitosan nanocomposites in antifouling applications. In this study, a thin shell of amorphous tin dioxide (SnOx) was grown on the surface of ZnO to form ZnO–SnOx core–shell nanoparticles that improved the chemical stability of the photocatalyst nanoparticles, as examined at pH 3 and 6. The photocatalytic activity of ZnO–SnOx in the degradation of methylene blue (MB) dye under visible light showed a higher efficiency than that of ZnO nanoparticles due to the passivation of electronic defects. Chitosan-based antifouling coatings with varying percentages of ZnO or ZnO–SnOx nanoparticles, with or without the glutaraldehyde (GA) crosslinking of chitosan, were developed and studied. The incorporation of photocatalysts into the chitosan matrix enhanced the thermal stability of the coatings. Through a mesocosm study using running natural seawater, it was found that chitosan/ZnO–SnOx/GA coatings enabled better inhibition of bacterial growth compared to chitosan coatings alone. This study demonstrates the antifouling potential of chitosan nanocomposite coatings containing core–shell nanoparticles as an effective solution for the prevention of biofouling.

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Efficacy of polymeric nanofibrous membranes for proficient wastewater treatment

et al. 2022

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A chitosan/dopamine-TiO2 composite nanofiltration membrane for antifouling in water purification

Cited by 18 publications

References 59 publications

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

Chitosan Nanocomposite Coatings Containing Chemically Resistant ZnO–SnOx Core–shell Nanoparticles for Photocatalytic Antifouling

Efficacy of polymeric nanofibrous membranes for proficient wastewater treatment

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