A greener route to photoelectrochemically active PbS nanoparticles

被引:87
作者
Akhtar, Javeed [1 ,2 ]
Malik, M. Azad [1 ,2 ]
O'Brien, Paul [1 ,2 ]
Wijayantha, K. G. U. [3 ]
Dharmadasa, R. [3 ]
Hardman, Samantha J. O. [4 ,5 ]
Graham, Darren M. [4 ,5 ]
Spencer, Ben F. [4 ,5 ,6 ]
Stubbs, Stuart K. [4 ,5 ]
Flavell, Wendy R. [4 ,5 ]
Binks, David J. [4 ,5 ]
Sirotti, Fausto [7 ]
El Kazzi, Mario [7 ]
Silly, Mathieu [7 ]
机构
[1] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
[2] Univ Manchester, Ctr Mat Sci, Manchester M13 9PL, Lancs, England
[3] Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England
[4] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England
[5] Univ Manchester, Photon Sci Inst, Manchester M13 9PL, Lancs, England
[6] STFC, Daresbury Lab, Cockcroft Inst Accelerator Sci & Technol, Warrington WA4 4AD, Cheshire, England
[7] SOLEIL, TEMPO Beamline, Soc Civile Synchrotron, F-91192 Gif Sur Yvette, France
基金
英国工程与自然科学研究理事会;
关键词
QUANTUM DOTS; PHENOLIC COMPONENTS; CDSE NANOCRYSTALS; OLEA-EUROPAEA; OLIVE OIL; MICROCOMPONENTS; STABILIZATION; GLUCOSIDES; EFFICIENT; TOXICITY;
D O I
10.1039/b924436k
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A cheap and more environmentally friendly method for the synthesis of high quality PbS nanoparticles in olive oil at 60 degrees C has been developed. Carefully controlling the conditions of reactions leads to PbS nanoparticles with well-defined sizes, and band gaps between 1.72 and 0.88 eV. The nanoparticles were characterized by XRD, HRTEM, NIR absorption spectroscopy, X-ray photoelectron spectroscopy (XPS) and a fluorescence lifetime experiment based on the time-correlated single photon counting (TCSPC) technique. Photoelectrochemical study carried out by steady-state current-voltage measurements of self-assembled PbS nanoparticles on ZnO-SnO2 electrodes in 1 M Na2SO3 electrolyte solution showed that as-prepared PbS nanoparticles were photochemically active.
引用
收藏
页码:2336 / 2344
页数:9
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