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

Abstract

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.

Methylene Blue Photodegradation under Visible Irradiation on Ag-Doped ZnO Thin Films

“…The XPS measurements were conducted to verify the surface components and valence states of thin film. Figure 3 3 International Journal of Photoenergy red line) [47]. Figure 4(a) plots the HRXPS spectrum for 2p 1/2 and Zn 2p 3/2 doublet.…”

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

“…The homogeneous formation and intensive distribution of small Ag-NPs on ZnO-NRs arrays offered more chances for the bacterial cells to contact with the Ag-NPs directly. The release of both Ag + and Zn 2+ from the nanomaterials contributed to the antimicrobial activity of the membrane [39,40]. Fig.…”

Desenvolvimento De Arcabouços De Plga E Pldla Com Poros Interconectados Direcionados Para Ensaios De Cultura De Células Ósseas

“…As nanopartículas de óxido de zinco (ZnO) mostraram-se promissoras como agente antimicrobiano. Pode ser associado com prata (Ag) e nanopartículas de óxido de prata (AgO NPs), que demonstraram poder e eficácia antibacterianos elevados em materiais dentários (CHEN et al, 2015;CHENG et al, 2015). Uma pequena quantidade de NPs Ag é suficiente para o composto ser fortemente antibacteriano, por suas propriedades antibacterianas, antifúngicas e antivirais além de não comprometer a cor, a estética, a mecânica e as propriedades do composto (CHENG et al, 2015) No entanto, ainda não está claro se o ZnO associado com Ag e AgO NPs poderia melhorar o efeito antibacteriano dos materiais intra-canal e diminuir a atividade antimicrobiana.…”