A Template-Free Microwave Synthesis of One-Dimensional Cu₂O Nanowires with Desired Photocatalytic Property.
A Template-Free Microwave Synthesis of One-Dimensional Cu₂O Nanowires with Desired Photocatalytic Property.
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DOI：
10.3390/ma11101843
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发表时间：
2018-09-27
期刊：
影响因子：
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通讯作者：
Zheng M
中科院分区：
文献类型：
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作者：
Chen R;Wang Z;Zhou Q;Lu J;Zheng M
采用无模板微波合成法成功制备了一维Cu2O纳米线。该方法既不需要表面活性剂（以诱导生长），也不需要长的反应时间。结构研究证实了Cu2O的成功制备。形貌图显示Cu2O纳米线的径向尺寸为10 nm。根据形貌演化和文献资料推测了可能的生长机制。一系列随时间变化的实验表明，随着时间的增加，在微波能量照射下，Cu2O初级粒子径向生长成纳米线。条件试验表明，NaOH的加入量对Cu2O纳米线的形成起着至关重要的作用。通过室温下可见光照射下降解甲基橙子来考察样品的光催化性能。得益于其独特的大表面积，4 mg制备的催化剂在120 min内降解了73%的甲基橙子（10 mg L−1）。
One-dimensional Cu2O nanowires were successfully prepared with a template-free microwave synthesis. Neither a surfactant was needed (to induce the growth), nor a long reaction time was required for this method. The structural investigation confirmed the successful preparation of Cu2O. The morphology images showed that the radial size of the Cu2O nanowires was 10 nm. The possible growth mechanism was hypothesized according to morphology evolution and references. A series of time-dependent experiments indicated that as time increased, Cu2O primary particles grew radially into nanowires under microwave energy irradiation. The condition-variable tests revealed that the suitable quantity of NaOH played a vital role in Cu2O nanowire formation. The photocatalytic property of the sample was investigated by degradation of methyl orange under the irradiation of visible light at room temperature. Benefiting from its unique large surface area, 4 mg of the prepared catalyst degraded 73% of methyl orange (10 mg L−1) in 120 min.