Preparation and antibacterial activity of chitosan-based nanocomposites containing bentonite-supported silver and zinc oxide nanoparticles for water disinfection

Motshekga, Sarah C.; Ray, Suprakas Sinha; Onyango, Maurice S.; Momba, Maggy Ndombo Benteke

doi:10.1016/j.clay.2015.06.010

Cited by 143 publications

(47 citation statements)

References 53 publications

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“…They reported that the antibacterial activities of the nanocomposites were pretty good. In other report by Motshekga et al (2015Motshekga et al ( , 2016, blends of silver-zinc oxide bentonite chitosan nanocomposites and three composites (Ag/ bentonite/chitosan, ZnO/bentonite/chitosan and silver/ ZnO/bentonite/chitosan nanocomposites were evaluated for their antimicrobial activities against gram-negative E. coli and gram-positive Enterococcus faecalis bacteria, respectively. It was concluded that silver/ZnO/bentonite/ chitosan nanocomposites proved to be the best bactericide.…”

Section: Clay/tio 2 /Znomentioning

confidence: 99%

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

et al. 2020

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Increase in industrial and anthropogenic activities leads to a decline in water quality. This necessitates the need for the removal of contaminants from industrial and domestic wastewater. Clay minerals are naturally abundant and non-toxic materials that found to be useful for remediation of emerging contaminants from wastewater. This review paper presents an insight into clay, the simplest material (in solgel techniques) for the synthesis of TiO 2 and ZnO, mechanisms of their reactions, analytical techniques used for characterizations, and their nanocomposites for wastewater treatment. Nanomaterials, such as nanoclay, titanium, and zinc oxide, have offered the opportunities of sequestering variety of pollutants in wastewater. TiO 2 and ZnO anchored on clay have been found to be good promising sequesters and have been explored for wastewater remediation via nanotechnology. This water treatment method includes adsorption/absorption, photocatalysis, and microbial disinfection. These nanocomposites provide more active surface sites and reduce the agglomeration of the nanoparticles, but leaching has been their shortcomings. To overcome this, the filtration technique may become significant for the removal and avoidance of fouling of wastewater. This can be achieved through the fabrication of nano-based filters using the nanocomposites.

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Section: Clay/tio 2 /Znomentioning

confidence: 99%

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

et al. 2020

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“…As compared to other metals, Ag is reported to have a broader spectrum of antimicrobial activity (Lansdowne, Williams, Chandler & Benfield, 2005;Reidy, Haase, Luch & Dawson et al, 2013). There has been several reports describing its antibacterial (Abreu et al, 2015;El-Rafie, Mohamed & Shaheen et al, 2010;Hebeish, El-Shafei & Sharafet al, 2011;Motshekga et al, 2015;Vimala et al, 2010), anti-fungal (Bajpai & Kumari, 2015;Kim, Sung, Suh & Moon et al, 2009) and anti-cancer activities (Humbatova, Zeynalov, Taghiyev & Tapdiqov, 2016). However, there has always been search for a suitable polymer, which may be employed as a basis for the entrapment of silver nanoparticles.…”

Section: Introductionmentioning

confidence: 92%

Synthesis of nanosilver loaded chitosan/poly(acrylamide-co-itaconic acid) based inter-polyelectrolyte complex films for antimicrobial applications

Bajpai¹,

Jyotishi²,

Bajpai³

2016

Carbohydrate Polymers

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“…Among the different nanofillers used as reinforcement phase, the most used in the development of CHI nanocomposites are: (i) layered silicates, such as clay [27–29]; (ii) metal/ceramic nanoparticles [30–32]; (iii) carbon nanotubes [33–35]; and more recently (iv) graphene based materials. [36–38] In the next subsections, each of these fillers will be analyzed.…”

Section: Chitosan Nanocompositesmentioning

confidence: 99%

Chitosan nanocomposites based on distinct inorganic fillers for biomedical applications

Moura

Mano

Paiva

et al. 2016

Science and Technology of Advanced Materials

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Chitosan (CHI), a biocompatible and biodegradable polysaccharide with the ability to provide a non-protein matrix for tissue growth, is considered to be an ideal material in the biomedical field. However, the lack of good mechanical properties limits its applications. In order to overcome this drawback, CHI has been combined with different polymers and fillers, leading to a variety of chitosan-based nanocomposites. The extensive research on CHI nanocomposites as well as their main biomedical applications are reviewed in this paper. An overview of the different fillers and assembly techniques available to produce CHI nanocomposites is presented. Finally, the properties of such nanocomposites are discussed with particular focus on bone regeneration, drug delivery, wound healing and biosensing applications.

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Preparation and antibacterial activity of chitosan-based nanocomposites containing bentonite-supported silver and zinc oxide nanoparticles for water disinfection

Cited by 143 publications

References 53 publications

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

Synthesis of nanosilver loaded chitosan/poly(acrylamide-co-itaconic acid) based inter-polyelectrolyte complex films for antimicrobial applications

Chitosan nanocomposites based on distinct inorganic fillers for biomedical applications

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