MoO_3纳米材料化学合成流程的研究  

STUDY ON CHEMICAL SYNTHESIS PROCESS FOR PREPARING NANOMATERIALS OF MOLYBDENUM TRIOXIDES

作　　者：徐志昌[1] 张萍[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京102201

出　　处：《中国钼业》2010年第1期6-20,共15页China Molybdenum Industry

摘　　要：研究了制备纳米MoO3的各种流程;其中包括,沉淀法、水热法、CVD法、溶胶-凝胶法、共胶凝法、溶胶-水热法等。本文权衡与评估了它们的优点和缺点;突出了溶胶-水热法,应用于制备纳米MoO3纳米棒、纳米带、纳米纤维、纳米管等,不但具有分散性良好,而且分布均匀,克服了溶胶-凝胶法热处理界面开裂的困难,解决了水热合成耗时冗长等缺点。其中,一维单晶的尺寸与形貌,不仅取决于水热条件,而且,取决于溶胶的制备条件。研究结果还证明,溶胶-凝胶法特别适合于制备热力学亚稳态的六方相MoO3薄膜。The study on the balance and evaluation between advantage and disadvantage of chemical synthesis process of preparation for nanomaterials of molybdenum trioxides has been achieved in detail in this paper. Research conclusion has shown that union flow is the crucial factor in determining the structure and performance of MoO3 nanomaterials. On the other hand, the control of size and shape is of great interest with regard to specific application of such materials as nanodevices. In particularly, reduced dimensionality has attracted considerable attention. The advantages of union process （ sol - hydrothermai process） are not only preventing the defect of crystal interface cracking and of long time waste in hydrothermal process, but also achieving products of uniform size and shape. The size and shape of one dimensional single crystal of molybdenum trioxides depend upon the sol process and hydrothermal process. The sol - gel process is very suitable for application of thin film for molybdenum trioxides with metastable phase.

关 键 词：MoO3纳米材料 沉淀法 水热法 溶胶-凝胶法 化学气相沉积 共胶凝法 溶胶-水热法联合流程 

分 类 号：TB383.1[一般工业技术—材料科学与工程]