Chemically controlled growth of porous CeO2 nanotubes for Cr(VI) photoreduction

Chemically controlled growth of porous CeO2 nanotubes for Cr(VI) photoreduction
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用于 Cr(VI) 光还原的多孔 CeO2 纳米管的化学控制生长

DOI:
10.1016/j.apcatb.2015.03.040
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发表时间:
2015-09
影响因子:
22.1
通讯作者:
Jia Xinjian
Jia Xinjian
中科院分区:
化学1区
文献类型:
--
作者:
Wu Junshu;Wang Jinshu;Du Yucheng;Li Hongyi;Yang Yilong;Jia Xinjian

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通过对K1. 33Mn8O16纳米线的表面化学性质进行微调,发展了一种基于模板溶液的纳米线合成策略,选择性地制备了均匀的CeO2纳米管和异质结构纳米线.改变十二烷基苯磺酸钠(SDBS)的浓度,CeO2纳米管的形貌和固体CeO2颗粒在K1. 33Mn8O16纳米线上的装饰性生长发生变化。室温下,在紫外光照射下,多孔CeO2纳米管对草酸诱导的Cr(VI)光催化还原反应具有良好的净水性能.研究了CeO2纳米管对Cr(VI)光还原的增强作用。我们的研究结果提供了一种新的手段,化学控制的CeO2纳米结构的生长,并证明了一个非常强大的和潜在的材料用于净化Cr(VI)污染的水。
A nanowire-directed templating solution-based synthesis strategy was developed to selectively prepare uniform CeO2nanotubes and heterostructured nanowires by fine-tuning surface chemistry of K1.33Mn8O16nanowires. The morphology of CeO2nanotubes and the decorative growth of solid CeO2particles on K1.33Mn8O16nanowires changed as the concentration of sodium dodecyl benzene sulfonate (SDBS) was altered. The resultant porous CeO2nanotubes showed excellent water purification performance for oxalic acid-induced photocatalytic reduction of Cr(VI) under UV light irradiation at room temperature. The enhanced ability for Cr(VI) photoreduction on the obtained CeO2nanotubes were investigated. Our findings provide a new means to chemically controlled growth of CeO2nanostructures and demonstrate a highly robust and potential material for the purification of Cr(VI) polluted water.
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