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Fabrication of PbS Nanoparticle-Sensitized TiO2 Nanotube Arrays and Their Photoelectrochemical Properties
被引:157
作者:
Kang, Qing
[1
]
Liu, Shaohuan
[1
]
Yang, Lixia
[1
,2
]
Cai, Qingyun
[1
]
Grimes, Craig A.
[3
]
机构:
[1] Hunan Univ, Dept Chem, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
[2] Nanchang Hangkong Univ, Sch Environm & Chem Engn, Nanchang 330063, Peoples R China
[3] Photon Fuels LLC, State Coll, PA 16803 USA
关键词:
SILAR;
Electrodeposition;
TiO2;
nanotube;
PbS;
Nanoparticle;
Photocurrrent;
PHOTOELECTROCATALYTIC OXIDATION;
QUANTUM DOTS;
DOPED TIO2;
DEGRADATION;
D O I:
10.1021/am101086t
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
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.
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页码:746 / 749
页数:4
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