Hydrothermal Synthesis and Formation Mechanism of Micrometer-sized MoO2 Hollow Spheres

Autor:	Guijun Zhang, Qing-hua Jin, Pingchuan Sun, Tie-hong Chen, Da-tong Ding, Zhongyong Yuan, Chenghua Guo, Zhu-rui Shen, Bao-hui Li
Rok vydání:	2006
Předmět:	Thermogravimetry chemistry.chemical_compound Tetrahydrate Chemical engineering Kirkendall effect Chemistry Scanning electron microscope Transmission electron microscopy Ammonium heptamolybdate Differential thermal analysis Hydrothermal synthesis Nanotechnology Physical and Theoretical Chemistry
Zdroj:	Chinese Journal of Chemical Physics. 19:543-548
ISSN:	2327-2244 1674-0068
DOI:	10.1360/cjcp2006.19(6).543.6
Popis:	Micrometer-sized MoO2 hollow spheres were synthesized hydrothermally with ammonium heptamolybdate tetrahydrate as molybdenum source, Cetyltrimethylammonium bromide as structure-directing agent and C2H5OH as reducing agent, respectively. The products were investigated by X-ray diffraction, thermogravimetry and differential thermal analysis, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. A morphology transition of "blocks-solid spheres-hollow spheres" during the growth process was observed and the possible mechanism for the formation of MoO2 samples was proposed to be through a microscale Kirkendall effect.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21c8b1b4f352fd5026b697d2505a213d https://doi.org/10.1360/cjcp2006.19(6).543.6 Zobrazit plný text záznamu