Ultrafast Photodeposition of Size-Controlled PbS Quantum Dots on TiO2

A surface‐modifier‐assisted photodeposition technique for directly depositing PbS quantum dots on mesoporous TiO2 nanocrystalline films is developed (see figure). The addition of mercaptoacetic acid (MAA) drastically increases the photodeposition rate and significantly blueshifts the absorption edge...

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Bibliographic Details
Published in:Chemphyschem 2010-08, Vol.11 (11), p.2349-2352
Main Authors: Jin-nouchi, Yasuaki, Akita, Tomoki, Tada, Hiroaki
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Electrochemistry
Exact sciences and technology
Gas-liquid interface and liquid-liquid interface
General and physical chemistry
photocatalysis
Photochemistry
photodeposition
Photoelectrochemistry. Electrochemiluminescence
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
quantum dots
size control
surface modification
Surface physical chemistry
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Summary:A surface‐modifier‐assisted photodeposition technique for directly depositing PbS quantum dots on mesoporous TiO2 nanocrystalline films is developed (see figure). The addition of mercaptoacetic acid (MAA) drastically increases the photodeposition rate and significantly blueshifts the absorption edge. The PbS particle size decreases and the particle size distribution narrows.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.201000229