Growth of Uranyl Hydroxide Nanowires and Nanotubes by the Electrodeposition Method and Their Transformation to One-Dimensional U3O8 Nanostructures
Growth of Uranyl Hydroxide Nanowires and Nanotubes by the Electrodeposition Method and Their Transformation to One-Dimensional U3O8 Nanostructures
复制标题
电沉积法生长氢氧化铀纳米线和纳米管及其向一维 U3O8 纳米结构的转化
DOI：
10.1002/ejic.201301634
复制
发表时间：
2014-03
影响因子：
2.3
通讯作者：
Shi Wei-qun
中科院分区：
文献类型：
--
作者：
Wang Lin;Zhao Ran;Gu Zhan-jun;Zhao Yu-liang;Chai Zhi-fang;Shi Wei-qun
锕系纳米材料在先进核能系统的核燃料制造和乏燃料后处理方面具有巨大的应用潜力。在这项工作中，我们使用径迹蚀刻的纳米多孔膜作为硬模板，通过电沉积合成具有新结构的铀基纳米材料。通过电化学行为研究和随后的产物表征，沉积产物的化学成分已被确认为氢氧化铀酰。更重要的是，通过仔细调整沉积时间和电流密度等生长参数，可以实现对沉积产物（即纳米线和纳米管）形态的精确控制。当施加低电流密度时，电沉积产物的优选形貌是纳米线，而只有当同时施加高电流密度和短沉积时间时才能形成纳米管。纳米管的形成归因于在过电位电还原条件下水电解产生的氢气泡。此外，我们通过煅烧将沉积产物的主要化学成分从氢氧化铀酰转变为八氧化三铀，SEM结果表明，煅烧后纳米线和纳米管的形貌得到了很好的保持。我们的工作为合成一维铀基纳米材料提供了有用的方案。
Actinide nanomaterials have great potential for application in the fabrication of nuclear fuels and spent fuel reprocessing in advanced nuclear energy systems. In this work, we used track-etched nanoporous membranes as hard templates to synthesize uranium-based nanomaterials with new structures by electrodeposition. Through electrochemical behavior investigations and subsequent product characterization, the chemical compositions of the deposition product has been confirmed to be uranyl hydroxide. More importantly, accurate control of the morphologies of the deposition product (i.e., nanowires and nanotubes) could be achieved by carefully adjusting the growth parameters such as deposition time and current density. The preferred morphology of the electrodeposition product was nanowires when a low current density was applied, whereas nanotubes could be formed only when a high current density and a short deposition time were both applied. The formation of nanotubes is attributed to the hydrogen bubbles generated by water electrolysis under the overpotential electroreduction conditions. Additionally, we transformed the main chemical composition of the deposition products from uranyl hydroxide to triuranium octoxide by calcination, and SEM results showed that the morphologies of the nanowires and nanotubes were very well maintained after the calcination. Our work provides a useful protocol for the synthesis of one-dimensional uranium-based nanomaterials.
登录
查看更多内容
影响因子：
15
作者：
Huimeng Wu;Yongan Yang;Y. Charles Cao
通讯作者：
Huimeng Wu;Yongan Yang;Y. Charles Cao
氧化铀纳米粒子的合成及其对苯甲醇转化为苯甲醛的催化性能
影响因子：
--
作者：
Li, Guo-Dong;Xu, Shuang;Li, Ji-Xue;Wang, Qun;Chen, Jie-Sheng
通讯作者：
Chen, Jie-Sheng
影响因子：
3.1
作者：
Dezhou Zheng;Jianying Shi;Xihong Lu;Wang Chengsheng;Zhao‐Qing Liu;Chao-lun Liang;Peng Liu;Y. Tong
通讯作者：
Dezhou Zheng;Jianying Shi;Xihong Lu;Wang Chengsheng;Zhao‐Qing Liu;Chao-lun Liang;Peng Liu;Y. Tong
影响因子：
1.6
作者：
S. Glover;R. Filby;Sue B. Clark;S. Grytdal
通讯作者：
S. Glover;R. Filby;Sue B. Clark;S. Grytdal
影响因子：
--
作者：
Routkevitch, D;Bigioni, T;Xu, JM
通讯作者：
Xu, JM