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

机译:在机械柔性基板上用Ag纳米颗粒修饰的ZnO纳米棒阵列具有增强的光学和抗菌特性

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摘要

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.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-014-0712-3) contains supplementary material, which is available to authorized users.
机译:异质结构的氧化锌纳米棒(ZnO NR)阵列通过水热方法在聚二甲基硅氧烷(PDMS)上垂直生长,然后通过光还原工艺原位沉积银纳米颗粒(Ag NPs)。 PDMS上的Ag-ZnO异质结构纳米棒的平均直径为160 nm,平均长度为2μm。通过高分辨率透射电子显微镜(HRTEM)测量的ZnO NRs显示出高度结晶的晶格条纹为0.255 nm,与ZnO晶格中的(0002)平面相对应。原位沉积在ZnO NRs上的Ag NP的平均直径估计为22±2 nm。与裸露的ZnO NRs相比,异质结构的Ag-ZnO纳米棒阵列在440 nm处具有增强的紫外线(UV)吸收率,并且在可见光区域(λem= 542 nm)有明显的发射。此外,与裸露的ZnO纳米棒阵列相比,Ag-ZnO异质结构纳米棒阵列的抗菌效率显示出明显的提高。使用3 T3小鼠成纤维细胞系研究了有和没有银NPs的ZnO纳米棒阵列的细胞毒性。电子补充材料本文的在线版本(doi:10.1186 / s11671-014-0712-3)包含补充材料,授权用户可以使用。

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