Simple synthesis of ZnO nanoflowers and its photocatalytic performances toward the photodegradation of metamitron
Simple synthesis of ZnO nanoflowers and its photocatalytic performances toward the photodegradation of metamitron
复制标题
ZnO纳米花的简单合成及其光催化降解苯咪隆的性能
DOI：
10.1016/j.materresbull.2015.11.062
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发表时间：
2016-04-01
影响因子：
5.4
通讯作者：
Zhang, Xia
中科院分区：
文献类型：
--
作者：
Xu, Yan;Jin, Jingjie;Zhang, Xia
以醋酸锌、柠檬酸钠和氢氧化钠为原料，采用一步水热合成法，在水溶液中成功地制备了厚度在20 nm左右的大量均匀的薄片状氧化锌纳米花。该方法简便、绿色、有效。所得到的氧化锌纳米花在300W的欧司朗(R)超强紫外光和300-600 nm的可见光照射下，对Metamitron的降解表现出显著的光催化活性和良好的循环稳定性。采用紫外-可见分光光度计法测定了安非他酮的光解速率。结果表明，在4h内，花状氧化锌微球悬浮液中约97%的间置电子元件消失，循环5次后降解率基本不变。(C)2015爱思唯尔有限公司。保留所有权利。
Large-scale ZnO nanoflowers assembled from numerous thin and uniform nanosheets with a thickness of around 20 nm, were successfully prepared through a facile one-step hydrothermal synthesis route by using zinc acetate, sodium citrate and sodium hydroxide in water solution. The method was simple, green and effective. The obtained ZnO nanoflowers exhibited remarkable photocatalytic acitivity and good cycle stability for the degradation of metamitron under a 300W of Osram (R) ultra-vitalux lamp light emitting UV and visible radiation over 300-600 nm. UV-vis spectrophotometery was used to measure the rate of photodecomposition of metamitron. The results indicate that about 97% of the metamitron disappeared in the suspension of flower-like ZnO microspheres within four hours, and the degradation efficiency were not changed even after 5 cycle times. (C) 2015 Elsevier Ltd. All rights reserved.