ZnO/Ag nanohybrid: synthesis, characterization, synergistic antibacterial activity and its mechanism

Ghosh, Somnath; Goudar, Venkanagouda S.; Padmalekha, K. G.; Bhat, S. V.; Indi, S. S.; Vasan, H. N.

doi:10.1039/c1ra00815c

Cited by 178 publications

(102 citation statements)

References 64 publications

(74 reference statements)

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“…An intense absorption in visible region can be clearly remarked as shown in Fig. 4a, as a result of the surface plasmon absorption at 484 nm of Ag nanoparticles [44].…”

Section: Resultsmentioning

confidence: 95%

Synthesis of mesoporous Ag/ZnO nanocrystals with enhanced photocatalytic activity

et al. 2015

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“…An intense absorption in visible region can be clearly remarked as shown in Fig. 4a, as a result of the surface plasmon absorption at 484 nm of Ag nanoparticles [44].…”

Section: Resultsmentioning

confidence: 95%

Synthesis of mesoporous Ag/ZnO nanocrystals with enhanced photocatalytic activity

et al. 2015

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“…The action of ZnO can be regarded as complementary to that of various silver formulations. Moreover, synergetic effects of both components used in hybrid metal-semiconductor nanoparticles result in enhanced antibacterial performance against bacteria (Ghosh et al 2012;Lu et al 2008;Motshekga et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Microwave solvothermal decoration of the cellulose surface by nanostructured hybrid Ag/ZnO particles: a joint XPS, XRD and SEM study

et al. 2015

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The synthesis of hybrid silver/zinc oxide (Ag/ZnO) decoration on the cellulose surface is described. The structures were characterized with X-ray photoelectron spectroscopy (XPS) and corroborated with X-ray diffraction and scanning electron microscopy. Silver nitrate and zinc acetate dihydrate were used as soluble raw materials. Hexamethylenetetraamine was used as the precipitating and reducing agent. The surface of a-cellulose was always treated by hydrogen peroxide before synthesis with a relatively mild effect manifested in water contact angle measurement and XPS high-resolution spectra. The Ag/ZnO decoration system was identified as a true nanodispersed metal/semiconductor hybrid with a unique collective plasmonic structure observed on Ag 3d core lines for the first time. A series of experiments with a single precursor solution contributed to the characterization of the interaction of Ag ? and Zn 2? species with the surface and to the description of the reaction mechanism in the mixed precursor solution. In contrast to previous reports, a specific interaction between the cellulose substrate and Zn 2? was observed. No specific non-thermal effects of microwave heating were observed.

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“…Meanwhile, the accumulated electrons (e−) contribute to reduce AgNO3 to form Ag nanoparticles in situ on the surface of ZnO nanorods [23,24]. The final products were resined by ethanol and DI water three times and dried in a vacuum oven.…”

Section: Fabrication Of Heterostructured Nanorods On Pdmsmentioning

confidence: 99%

Ag nanoparticles-decorated ZnO nanorod array on a mechanical flexible substrate with enhanced optical and antimicrobial properties

Chen¹,

Tse²,

Chen³

et al. 2016

Nano Online

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Heteronanostructured zinc oxide nanorod (ZnO NR) array are vertically grown on polydimethylsiloxane (PDMS) through a hydrothermal method followed by an in situ deposition of silver nanoparticles (Ag NPs) through a photoreduction process. The Ag-ZnO heterostructured nanorods on PDMS are measured with an average diameter of 160 nm and an average length of 2 μm. ZnO NRs measured by high-resolution transmission electron microscope (HRTEM) shows highly crystalline with a lattice fringe of 0.255 nm, which corresponds to the (0002) planes in ZnO crystal lattice. The average diameter of the Ag NPs in situ deposited on the ZnO NRs is estimated at 22 ± 2 nm.As compared to the bare ZnO NRs, the heterostructured Ag-ZnO nanorod array shows enhanced ultraviolet (UV) absorption at 440 nm, and significant emission in the visible region (λem = 542 nm). In addition, the antimicrobial efficiency of Ag-ZnO heterostructured nanorod array shows obvious improvement as compared to bare ZnO nanorod array. The cytotoxicity of ZnO nanorod array with and without Ag NPs was studied by using 3 T3 mouse fibroblast cell line. No significant toxic effect is imposed on the cells.

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ZnO/Ag nanohybrid: synthesis, characterization, synergistic antibacterial activity and its mechanism

Cited by 178 publications

References 64 publications

Synthesis of mesoporous Ag/ZnO nanocrystals with enhanced photocatalytic activity

Synthesis of mesoporous Ag/ZnO nanocrystals with enhanced photocatalytic activity

Microwave solvothermal decoration of the cellulose surface by nanostructured hybrid Ag/ZnO particles: a joint XPS, XRD and SEM study

Ag nanoparticles-decorated ZnO nanorod array on a mechanical flexible substrate with enhanced optical and antimicrobial properties

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