The enhanced photoelectrochemical performance of CdS quantum dots sensitized TiO2 nanotube/nanowire/nanoparticle arrays hybrid nanostructures
The enhanced photoelectrochemical performance of CdS quantum dots sensitized TiO2 nanotube/nanowire/nanoparticle arrays hybrid nanostructures
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DOI：
10.1039/c4ce00122b
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发表时间：
2014-07
期刊：
影响因子：
3.1
通讯作者：
Pin Lv;Haibin Yang;W. Fu;Hairui Sun;Wenjiao Zhang;Meijing Li;Huizhen Yao;Yanli Chen;Yannan Mu;Lihua Yang;Jinwen Ma;Meiling Sun;Qian Li;Shi Su
中科院分区：
文献类型：
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作者：
Pin Lv;Haibin Yang;W. Fu;Hairui Sun;Wenjiao Zhang;Meijing Li;Huizhen Yao;Yanli Chen;Yannan Mu;Lihua Yang;Jinwen Ma;Meiling Sun;Qian Li;Shi Su
本研究主要从两个方面提高光电化学性能：异质结数量的增加和纳米管/纳米线/纳米颗粒阵列混合纳米结构的优势。 TiO2 纳米粒子多孔层由 CdS 量子点 (QDs) 敏化，并在材料顶部涂覆经过氢处理的带有纳米线的 TiO2 纳米管，该纳米管也由 CdS QDs 敏化（这种纳米结构定义为 CdS/H:TTWP）。采用电化学阳极氧化、连续离子层吸附反应（SILAR）和溶胶-凝胶方法成功制备了CdS/H:TTWP。光电化学 (PEC) 性能测试的数据表明，在 AM 1.5 G 照明下，CdS/H:TTWP 的光电流密度在 -0.43 V 时相对于 Ag-AgCl 为 7.6 mA cm−2。
This study aims at improving the photoelectrochemical performance mainly from two aspects: the increased number of heterojunctions and the advantages of nanotube/nanowire/nanoparticle arrays hybrid nanostructures. TiO2 nanoparticles porous layer was sensitized by CdS quantum dots (QDs), and coated on the top of the material, hydrogen-treated TiO2 nanotubes with nanowires, which was also sensitized by CdS QDs (This nanostructure is defined as CdS/H:TTWP). CdS/H:TTWP was successfully fabricated by the methods of electrochemical anodization, successive ionic layer adsorption and reaction (SILAR) and sol–gel. The data from the photoelectrochemical (PEC) performance test shows that the photocurrent density of CdS/H:TTWP is 7.6 mA cm−2 at −0.43 V vs. Ag–AgCl under AM 1.5 G illuminations.