在二甘醇中制备不同形貌的纳米级 PbSe 颗粒。

Preparation of nanoscale PbSe particles with different morphologies in diethylene glycol.

机构信息

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Changchun 130022, People's Republic of China.

出版信息

Nanoscale. 2010 May;2(5):697-9. doi: 10.1039/b9nr00305c. Epub 2010 Jan 28.

DOI:10.1039/b9nr00305c

PMID:20648313

Abstract

Nanoscale PbSe particles with different morphologies including octahedral, tetradecahedral and cubic shapes have been successfully prepared in diethylene glycol (DEG) at 240 degrees C in the presence of PVP-K30: poly(vinyl pyrrolidone), M(W) = 50 000. The formation of PbSe is believed to be an elemental recombination process of corresponding elements reduced from their precursors by the solvent. Experimental results showed that a prominent morphological variation was observed through varying the molar ratios of selenius acid to Pb(2+) when Pb(Ac)(2) was used as lead precursor, while the sizes of the final PbSe products tended to increase along with the increase of the molar ratios of selenius acid to Pb(2+) when Pb(NO(3))(2) was used as lead precursor.

摘要

已成功地在二甘醇（DEG）中制备了具有不同形态的纳米 PbSe 颗粒，包括八面体、十四面体和立方体形。这些颗粒是在 240°C 下，在 PVP-K30（聚乙烯吡咯烷酮，M（W）=50000）的存在下制备的。PbSe 的形成被认为是通过溶剂将相应的元素从其前体中还原，然后进行元素重组的过程。实验结果表明，当使用 Pb(Ac)(2)作为铅前体时，通过改变硒酸与 Pb(2+)的摩尔比，可以观察到明显的形态变化，而当使用 Pb(NO(3))(2)作为铅前体时，随着硒酸与 Pb(2+)的摩尔比的增加，最终 PbSe 产物的尺寸也趋于增大。