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低温下无基底超声辅助水热法生长ZnO纳米花

Substrate free ultrasonic-assisted hydrothermal growth of ZnO nanoflowers at low temperature.

作者信息

Katiyar Anu, Kumar Nishant, Shukla R K, Srivastava Anchal

机构信息

Department of Physics, University of Lucknow, Lucknow, 226007 India.

出版信息

SN Appl Sci. 2020;2(8):1386. doi: 10.1007/s42452-020-3186-1. Epub 2020 Jul 16.

DOI:10.1007/s42452-020-3186-1
PMID:32835162
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7365029/
Abstract

ZnO nanoflowers (NFs) have been synthesised using a simple cost effective ultrasonic-assisted hydrothermal method at low temperature of 95 °C. Here the NFs consist of petal-like arrangement of several hexagonal-shaped nanorods, the length and diameter of which lie in a range of 100-150 nm and 30-70 nm, respectively. ZnO NFs possess hexagonal wurtzite phase, high crystallinity and strong absorption in the UV region. The optical band gap 3.25 eV of these NFs estimated by two different ways is found to be nearly the same. Room temperature photoluminescence spectrum reveals that the ZnO NFs exhibit dominant UV emission and three major emissions in the visible i.e. violet, blue-green and yellow. NFs are promising nanostructures for application in environment related sensors and antimicrobial activity.

摘要

采用一种简单且经济高效的超声辅助水热法，在95℃的低温下合成了氧化锌纳米花（NFs）。在此，NFs由几个六边形纳米棒呈花瓣状排列组成，其长度和直径分别在100 - 150纳米和30 - 70纳米范围内。氧化锌NFs具有六方纤锌矿相、高结晶度以及在紫外区域的强吸收。通过两种不同方法估算出这些NFs的光学带隙为3.25电子伏特，结果发现几乎相同。室温光致发光光谱表明，氧化锌NFs呈现出占主导的紫外发射以及在可见光区域的三种主要发射，即紫光、蓝绿光和黄光。NFs是用于环境相关传感器和抗菌活性应用的有前景的纳米结构。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/317a6c8d41a3/42452_2020_3186_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/e185201240ac/42452_2020_3186_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/0af2690e8c2a/42452_2020_3186_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/317a6c8d41a3/42452_2020_3186_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/e185201240ac/42452_2020_3186_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/0af2690e8c2a/42452_2020_3186_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a7c/7365029/317a6c8d41a3/42452_2020_3186_Fig4_HTML.jpg

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