Tailoring the surface of ZnO nanorods into corrugated nanorods via a selective chemical etch method
Tailoring the surface of ZnO nanorods into corrugated nanorods via a selective chemical etch method
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通过选择性化学蚀刻方法将 ZnO 纳米棒表面定制为波纹纳米棒
DOI：
10.1088/0957-4484/27/29/295601
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发表时间：
2016-06
期刊：
影响因子：
3.5
通讯作者：
Wu Yelong
中科院分区：
文献类型：
--
作者：
Duan Xiangyang;Chen Guangde;Li Chu;Yin Yuan;Jin Wentao;Guo Lu'an;Ye Honggang;Zhu Youzhang;Wu Yelong
使用化学气相沉积方法，我们成功地将光滑的ZnO纳米棒（NR）转化为波纹状的NR通过简单地增加反应时间。研究了波纹状NR的表面形貌和晶体结构。波纹状NR在暴露侧表面由交替的（11 2 <$1）和（11 2 <$1 <$）平面装饰，而传统的{ 10 1 <$0}平面消失。在周期性波纹结构中没有发现孪晶边界，表明它们是II型波纹NR。进一步的调查告诉我们，它们是被选择性蚀刻的。我们介绍了一种水热方法来合成光滑的ZnO NR，然后在950 °C的管式炉中用一氧化碳流对其进行蚀刻。通过分离的生长阶段和选择性蚀刻阶段，我们明确证明了成功的选择性蚀刻效果的ZnO NR与一氧化碳还原气氛的第一次。提出了一种基于一氧化碳与不同暴露表面之间的选择性反应的蚀刻机理。我们的研究结果将提高对粗糙或波纹状纳米结构材料生长机理的理解，并为表面控制纳米结构材料的应用提供新的策略。
Using the chemical vapour deposition method, we successfully converted smooth ZnO nanorods (NRs) into corrugated NRs by simply increasing the reaction time. The surface morphology and crystallographic structure of the corrugated NRs were investigated. The corrugated NRs were decorated by alternant ( 11 2 ¯ 1 ) and ( 11 2 ¯ 1 ¯ ) planes at the exposed side surfaces while the conventional { 10 1 ¯ 0 } planes disappeared. No twinning boundaries were found in the periodically corrugated structures, indicating that they were type II corrugated NRs. Further investigation told us that they were selectively etched. We introduced a hydrothermal method to synthesize the smooth ZnO NRs and then etched them in a tube furnace at 950 °C with a flow of carbon monoxide. By separating the growth stage and the selective etching stage, we explicitly demonstrated a successfully selective etching effect on ZnO NRs with a carbon monoxide reducing atmosphere for the first time. An etching mechanism based on the selective reaction between carbon monoxide and the different exposed surfaces was proposed. Our results will improve the understanding of the growth mechanism on coarse or corrugated NRs and provide a new strategy for the application of surface controlled nanostructured materials.
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影响因子：
1.8
作者：
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通讯作者：
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