Mechanochemical synthesis of Sb₂S₃ and Bi₂S₃ nanoparticles

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• 作者：Erika Dutková ; ^a ; Laszlo Takacs^b ; Marí ; a J. Sayagu&eacute ; s^c ; Peter Balá ; ?^a ; ^{balaz@saske.sk} ; Jaroslav Ková ; ?^d ; Alexander &Scaron ; atka^d
• 关键词：Mechanochemistry ; Kinetics ; Materials processing ; Nanostructure ; Semiconductors ; Powders
• 刊名：Chemical Engineering Science
• 出版年：2013
• 出版时间：14 January, 2013
• 年：2013
• 卷：85
• 期：Complete
• 页码：25-29
• 全文大小：873 K

文摘

The mechanochemical synthesis of Sb₂S₃ and Bi₂S₃ nanoparticles has been studied, starting from the corresponding metals and sulfur and using high-energy mechanochemical processing in a planetary laboratory mill. XRD, specific surface area measurement, SEM and TEM (HRTEM) with ED were used for the characterization of the nanoparticles. The XRD patterns confirmed the production of Sb₂S₃ (JCPDS 42-1393, orthorhombic) and Bi₂S₃ (JCPDS 17-320, orthorhombic) nanopowders. The transformation is about three times faster in the Bi-S than in the Sb-S system. The kinetics of the reaction has been determined from XRD line intensities. The grain size is about 30 nm for Sb₂S₃ and 24 nm for Bi₂S₃. The particles are highly agglomerated due to their nanometer size consequent large specific surface area. Unlike more conventional methods, mechanochemical synthesis is a simple and fast alternative for the preparation of these nanopowders that can be carried out at ambient temperature and atmospheric pressure.