Synthesis of Se nanospheres and PbSe nanoshells in solution under refluxing and stirring

• Published in: Smart materials and structures Vol. 16; no. 6; pp. 2350 - 2353
• Main Authors: Gao, Shiyong, Liu, Donghua, Xu, Dan, Li, Dongmei, Hong, Youliang, Chen, Haiyong, Dai, Quanqin, Kan, Shihai, Li, Hongdong, Zou, Guangtian
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.12.2007; Institute of Physics
• Subjects: Exact sciences and technology; Fundamental areas of phenomenology (including applications); General equipment and techniques; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Measurement and testing methods; Physics; Servo and control equipment; robots; Solid mechanics; Structural and continuum mechanics; Nanoparticles; Scanning electron microscopy; Bubbles; Lead selenides; Energy dispersion; Aqueous solutions; Stirring; Nanosphere; XRD; X-ray spectroscopy; Selenium; X-ray radiography
• ISSN: 0964-1726; 1361-665X
• DOI: 10.1088/0964-1726/16/6/039

In this paper, we report on a method to fabricate selenium (Se) nanospheres and lead selenide (PbSe) nanoshells in aqueous solution at 100 deg C under refluxing and vigorous magnetic stirring. The PbSe nanoshells (the average diameter is 2.0 mum and average shell-thickness is 250 nm) were synthesized by using ascorbic acid as the reducing agent with the assistance of a template of synthesized Se nanospheres (the average diameter is 1.5 mum). The synthesized selenium nanospheres and PbSe nanoshells were further characterized by using x-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS). Finally, the growth mechanism of Se nanospheres and PbSe nanoshells is also discussed.