Synthesis of Coupled Semiconductor by Filling 1D TiO2 Nanotubes with CdS
Synthesis of Coupled Semiconductor by Filling 1D TiO2 Nanotubes with CdS
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DOI：
10.1021/cm802282t
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发表时间：
2008-11-11
影响因子：
8.6
通讯作者：
Misra, Mano
中科院分区：
文献类型：
--
作者：
Banerjee, Subarna;Mohapatra, Susanta K.;Misra, Mano
将硫化镉（cd）纳米粒子（NPs）填充到一维二氧化钛（TiO2）纳米管（NTs）中，制备了一种耦合半导体材料。采用超声电化学阳极氧化法制备了长度为550 nm，直径为80 nm的自组装TiO2 NTs。通过单步电沉积方法将这些NTs与US NPs功能化。这种材料可以收集紫外线和可见光（高达510纳米）区域的太阳光。与纯TiO2 NTs和商用P25 NPs相比，使用US功能化的TiO2 NTs的光活性提高了8到9倍。该方法将有助于设计局限于内径纳米通道内的多结半导体材料。
A Coupled semiconductor material is prepared by filling one-dimensional (ID) titania (TiO2) nanotubes (NTs) with cadmium sulfide (CdS) nanoparticles (NPs). Self-assembled TiO2 NTs (length = 550 nm, diameter = 80 nm) are prepared by the sonoelectrochemical anodization method. These NTs are functionalized with US NPs by a single-step electrodeposition method. This material harvests solar light in UV as well as visible light (up to 510 nm) region. An eight to 9-fold enhancement in photoactivity is observed using US functionalized TiO2 NTs compared to pure TiO2 NTs and commercial P25 NPs. This methodology will be useful in designing multijunction semiconductor materials confined inside ID nanochannels.