A greener route to photoelectrochemically active PbS nanoparticles
A greener route to photoelectrochemically active PbS nanoparticles
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DOI：
10.1039/b924436k
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发表时间：
2010-01-01
影响因子：
--
通讯作者：
Silly, Mathieu
中科院分区：
文献类型：
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作者：
Akhtar, Javeed;Malik, M. Azad;Silly, Mathieu
开发了一种在60 ℃下在橄榄油中合成高质量PbS纳米颗粒的廉价且更环保的方法。仔细控制反应条件导致PbS纳米颗粒具有明确的尺寸，带隙在1.72和0.88 eV之间。采用XRD、HRTEM、NIR吸收光谱、X射线光电子能谱（XPS）和基于时间相关单光子计数（TCSPC）技术的荧光寿命实验对纳米粒子进行了表征。在1 M Na 2SO 3电解质溶液中，对PbS纳米粒子在ZnO-SnO 2电极上的自组装进行稳态电流-电压测量，结果表明PbS纳米粒子具有光化学活性.
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.