The use of castor oil and ricinoleic acid in lead chalcogenide nanocrystal synthesis

被引：0

作者：

Kyobe, Joseph W. M. ^{[1
,2
,3
]}

Mubofu, Egid B. ^{[1
]}

Makame, Yahya M. M. ^{[1
]}

Mlowe, Sixberth ^{[2
]}

Revaprasadu, Neerish ^{[2
]}

机构：

[1] Univ Dar Es Salaam, Dept Chem, POB 35061, Dar Es Salaam, Tanzania

[2] Univ Zululand, Dept Chem, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa

[3] St Johns Univ Tanzania, Dept Chem, POB 47, Dodoma, Tanzania

来源：

INTERNATIONAL NANO LETTERS | 2016年 / 6卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Castor oil; Ricinoleic acid; Lead chalcogenide nanocrystals; Optical properties; Green synthesis;

D O I：

10.1007/s40089-016-0189-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A green solution-based thermolysis method for the synthesis of lead chalcogenide (PbE, E = S, Se, Te) nanocrystals in castor oil (CSTO) and its isolate ricinoleic acid (RA) is described. The blue shift observed from the optical spectra of CSTO and RA-capped PbE nanocrystals (NCs) confirmed the evidence of quantum confinement. The dimensions of PbE NCs obtained from NIR absorption spectra, transmission electron microscopy (TEM), and X-ray diffraction (XRD) studies were in good agreement. The particle sizes estimated were in the range of 20, 25, and 130 nm for castor oil-capped PbS, PbSe, and PbTe, respectively. Well-defined close to cubic-shaped particles were observed in the scanning electron microscopy (SEM) images of PbSe and PbTe nanocrystals. The high-resolution TEM and selective area electron diffraction (SAED) micrographs of the as-synthesized crystalline PbE NCs showed distinct lattice fringes with d-spacing distances corroborating with the standard values reported in literature.

引用

页码：235 / 242

页数：8

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