Template-free one-step fabrication of porous CuInS2 hollow microspheres

✍ Scribed by Yunxia Qi; Kaibin Tang; Suyuan Zeng; Weiwei Zhou

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 698 KB
• Volume: 114
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/j.micromeso.2008.01.027

✦ Synopsis

Hollow CuInS 2 microspheres have been successfully prepared via a simple solution-based route without employing templates and surfactants. Transmission electron microscope (TEM) images clearly show the hollow nature of the as-obtained products. Field emission scanning electron microscopy (FESEM) images reveal that the shells of as-prepared CuInS 2 microspheres were constructed by nanoparticles or nanoflakes. The specific surface area and pore-size distribution of the obtained product as determined by gas-sorption measurements show that the CuInS 2 hollow microspheres exhibit high Brunauer-Emmett-Teller (BET) surface area and porosity properties. TEM observations of intermediate products at different reaction stages indicate that these hollow CuInS 2 microspheres are formed mainly via Ostwald ripening.