title: Fabrication of PbS nanoparticle-sensitized TiO₂ nanotube arrays and their photoelectrochemical properties.
abstract: TiO(2) 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 TiO(2) NTAs results in an increase in the visible light adsorption, however the increase in photocurrent is dependent on the modification method. PbS/TiO(2) 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.
authors.affiliation: State Key Laboratory of Chemo/Biosensing and Chemometrics, Department of Chemistry, Hunan University, Changsha 410082, P. R. China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Kang
authors.forename: Shaohuan
authors.initials: S
authors.lastname: Liu
authors.forename: Lixia
authors.initials: L
authors.lastname: Yang
authors.forename: Qingyun
authors.initials: Q
authors.lastname: Cai
authors.forename: Craig A
authors.initials: CA
authors.lastname: Grimes
mesh_terms: D011211:Electric Power Supplies; D004563:Electrochemistry / Q000379:methods*; D004574:Electromagnetic Fields; D007854:Lead / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D010316:Particle Size; D010777:Photochemistry / Q000379:methods*; D018036:Selenium Compounds / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D018036:Selenium Compounds; C088065:lead selenide; C009495:titanium dioxide; D007854:Lead; D014025:Titanium