Fabrication of PbS Nanoparticle-Sensitized TiO2 Nanotube Arrays and Their Photoelectrochemical Properties
Fabrication of PbS Nanoparticle-Sensitized TiO2 Nanotube Arrays and Their Photoelectrochemical Properties
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DOI：
10.1021/am101086t
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发表时间：
2011-03-01
影响因子：
9.5
通讯作者：
Grimes, Craig A.
中科院分区：
文献类型：
--
作者：
Kang, Qing;Liu, Shaohuan;Grimes, Craig A.
TiO 2纳米管阵列（NTA）通过连续离子层吸附和反应（SILAR）或电沉积用PbS纳米颗粒进行改性，目的是将光电化学电池调谐到可见光区域。PbS改性的TiO 2 NTAs的可见光吸收的增加的结果，但光电流的增加是依赖于改性方法。用SILAR法和电沉积法制备的PbS/TiO 2纳米管的光电流分别为11.02和5.72 mA/cm（2）。光电流的增加归因于增强的电荷分离效率和改善的电子传输。
TiO2 nanotube arrays (NTAs) are modified with PbS nanoparticles by successive ionic layer adsorption and reaction (SILAR) or electrodeposition, with an aim towards tuning the photoelectrochemical cell to the visible region. The PbS modification of the TiO2 NTAs results in an increase in the visible light adsorption, however the increase in photocurrent is dependent on the modification method. PbS/TiO2 NTAs prepared by SILAR and electrodeposition show, respectively, photocurrents of 11.02 and 5.72 mA/cm(2). The increase in photocurrent is attributed to enhanced charge separation efficiency and improved electron transport.