Novel silver nanoparticles/activated carbon co-doped titania nanoparticles for enhanced antibacterial activity

Parvathi, V. Poornima; Umadevi, M.; Sasikala, R.; Parimaladevi, R.; Ragavendran, V.; Mayandi, J.; Sathe, G.V.

doi:10.1016/j.matlet.2019.126775

Cited by 17 publications

(6 citation statements)

References 5 publications

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“…The higher activity of AgNPs than aqueous extract was due to the combination of biomolecules such as alkaloids, flavonoids, and phenols with AgNPs. Various studies have concluded that AgNPs synthesized from plant extract had remarkable antibacterial activities [32,33] . AgNPs adhere to and infiltrate the bacterial cell wall, inducing alterations in the plasma membrane's permeability and ultimately causing cell demise [34] .…”

Section: Resultsmentioning

confidence: 99%

“…Various studies have concluded that AgNPs synthesized from plant extract had remarkable antibacterial activities. [32,33] AgNPs adhere to and infiltrate the bacterial cell wall, inducing alterations in the plasma membrane's permeability and ultimately causing cell demise. [34] Another anticipated mechanism for cell death involves the generation of free radicals by AgNPs.…”

Section: Antibacterial Activitymentioning

confidence: 99%

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Antibacterial and Wound Healing Efficacy of Silver Nanoparticles Synthesized from Root Bark ofBerberis lyciumRoyle

Mughal,

Ali,

Mumtaz

et al. 2024

ChemistrySelect

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Infectious diseases are becoming a worldwide threat due to antibiotic resistance. Therefore, it is necessary to prepare innovative antibiotics against bactericidal activities. The development of nanomedicine has been greatly aided by nanotechnology. A focal point of exploration involves the production of noble metal nanoparticles, owing to their diverse applications. The study's subjects are the synthesis, characterization, and assessment of silver nanoparticles (AgNPs) derived from Berberis lyceum Royle root bark (BLR) extract. The study revealed the potent antibacterial properties of BLR‐AgNPs, with heightened efficacy against S. pyogenes (16.7±0.3 mm) and comparatively lower activity against E. coli (1.1±0.1 mm). Minimum inhibitory concentration assessment indicated maximum activity at 10 μg/mL, whereas 2.5 μg/mL demonstrated the least inhibitory effect. Furthermore, the wound healing potential of BLR‐AgNPs was explored, demonstrating superior activity (0.19±0.02 cm) equated to BLR‐extract (0.46±0.02 cm) and untreated wounds (0.77±0.02 cm). These findings underscore the considerable antibacterial and wound‐healing capabilities of BLR‐AgNPs.

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Section: Resultsmentioning

confidence: 99%

Section: Antibacterial Activitymentioning

confidence: 99%

Antibacterial and Wound Healing Efficacy of Silver Nanoparticles Synthesized from Root Bark ofBerberis lyciumRoyle

Mughal,

Ali,

Mumtaz

et al. 2024

ChemistrySelect

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“…Poornima et al reported a zone of inhibition (ZoI) ranging from 4 to 5.5 mm against E. coli and S. aureus by TiO 2 , Ag NPs–doped TiO 2 NPs, and activated carbon–doped TiO 2 NPs. [ 50 ] Maqusood et al reported approximately 7–8 mm ZoI for 150 μg against E. coli and S. aureus by CuO NPs. [ 51 ] Manyasree et al reported the antibacterial activity of CuO NPs against E. coli and S. aureus as 6 and 4 mg mL −1 .…”

Section: Resultsmentioning

confidence: 99%

“…Antibacterial Assay: The antibacterial activity was carried out with slight modifications. [56] The antibacterial efficiency of ZnO NPs, CuO NPs, and ZnO/CuO NCs was evaluated against the Gram-positive pathogen S. aureus (ATCC-25 923) and Gram-negative E. coli (ATCC-25 922) purchased from Biolinear lab, Coimbatore, by the disc diffusion method. Chloramphenicol (10 μg mL À1 ) was used as the standard for the antibacterial tests.…”

Section: Methodsmentioning

confidence: 99%

Environmental Remediation of Real Textile Dyeing Wastewater Under Visible Light and Inactivation of Pathogenic Bacteria Using ZnO/CuO Nano‐Needles

Ramaraj

Mahalingam

Parimaladevi

et al. 2023

Physica Status Solidi (a)

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Textile industries have an immense existence in a country's economy. Large quantity of water is consumed by textile dyeing industries and produces volumes of wastewater. Treating these hazardous effluents to make them environmental friendly, using nanocatalysts is the best promising method. Metal oxide nanomaterials have emerged as an important tool for environmental remediation. Herein the hydrothermally synthesized ecofriendly and low‐cost zinc oxide/copper oxide nanocomposites (ZnO/CuO NCs) with different proportions of binary oxides are evaluated for the applications of degrading organic pollutants and antibacterial activity. The influence of doping is also studied in structural, optical, morphological, photocatalytic, and antibacterial activities. The presence of CuO in NCs affirms the formation of ZnO/CuO NCs. Photodegradation of Congo Red (CR) and real textile dyeing wastewater (TDW) under visible light irradiation by 0.5 M ZnO:0.5 M CuO NCs reveal them to act as a perfect catalyst by tuning doping concentration of Cu in ZnO, with 1.9 × 10−3 and 5.4 × 10−3 M min−1 rate constant. Hybrid nanocomposite materials exhibit high antibacterial activity against Staphylococcus aureus and Escherichia coli with 5 and 6 mm inhibition zone. The experimental characteristics of NCs are explained by a combination of electronic band structure due to size effect and tuning metal oxide proportions in comparison to that of pure metal oxide.

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“…Recently, studies have focused on the production of reactive oxygen species (ROS) by metal nanoparticles impregnated activated carbon in order to achieve the maximum antibacterial effect [17][18][19]. Parvathi et al [20] suggest that the adsorption ability of activated carbon confines bacteria around the nanoparticle environment and the oxidative stress induced by metal ions can promote cell wall rupture. Mustafa K A Mohammed et al [21] have reported antimicrobial properties against E. coli and S. aureus bacteria using ZnO-CNTs.…”

Section: Introductionmentioning

confidence: 99%

Enhancement in dye removal by photocatalytic degradation using metal oxide nanoparticles embedded on activated carbon powder and study of their antibacterial activity

et al. 2023

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The synergetic effect of photocatalytic, adsorption and antibacterial properties of ZnO@ACP and CuO@ACP samples are investigated in this study. The synthesized samples are initially studied for their elemental composition, crystalline phase and structure, surface morphology, optical band gap, functional groups, vibrational modes by EDAX, SEM, XRD, Raman, FTIR, UV-Vis spectroscopy and BET respectively. Methylene blue (MB) which is used as a dye in industries has been used in this work for its removal from waste water using the above prepared samples. We could degrade 63% of MB by adsorption under dark conditions with this samples. After illumination with UV radiation, it is seen that MB is degraded 93% by ZnO@ACP, 85% with CuO@ACP whereas 78% with activated charcoal. This reflects that ZnO and CuO nanoparticles embedded with activated charcoal shows increase in photocatalytic activity. Further, Langmuir-Hinshelwood model is used to calculate the kinetic rates of ZnO and CuO nanoparticles on embedded on ACP samples. The antimicrobial activity of synthesized samples is also tested against E. coli. bacteria whereas cell viability is tested using CHO (Chinese hamster ovary) animal cells at various concentrations. The results obtained shows 75% decrease in the growth of E. coli bacteria for ZnO@ACP and 60% decrease for CuO@ACP at a concentration of 250µg/ml whereas reduction in colony counts is 95% and 75%, respectively. we obtained 80-90% CHO cell viability proves that both these samples are not toxic to these cells.

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Novel silver nanoparticles/activated carbon co-doped titania nanoparticles for enhanced antibacterial activity

Cited by 17 publications

References 5 publications

Antibacterial and Wound Healing Efficacy of Silver Nanoparticles Synthesized from Root Bark ofBerberis lyciumRoyle

Antibacterial and Wound Healing Efficacy of Silver Nanoparticles Synthesized from Root Bark ofBerberis lyciumRoyle

Environmental Remediation of Real Textile Dyeing Wastewater Under Visible Light and Inactivation of Pathogenic Bacteria Using ZnO/CuO Nano‐Needles

Enhancement in dye removal by photocatalytic degradation using metal oxide nanoparticles embedded on activated carbon powder and study of their antibacterial activity

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