Nano-particles of oxides through chemical methods

2019-11-17 06:48:56

methods nano ceramic oxide oxides

责任者: Pathak, A.;Pramanik, P. 单位: Dept. of Chem., Indian Inst. of Technol., Kharagpur, India 来源出处: PINSA-A (Proceedings of the Indian National Science Academy) Part A (Physical Sciences)(PINSA-A (Proc. Indian Natl. Sci. Acad. A, Phys. Sci.) (India)),2001/01/,67(1):47-70 摘要: The paper reviews various synthesis methods suitable for the preparation of nano-sized particles of ceramic oxides. The focus is on the various chemical processes that are gaining rapid popularity for large-scale production of fine ceramics. An effort has been made to summarize, with suitable examples, the methods developed by the authors for the preparation of nano-sized oxides. Three precursor solution based preparative methods that have been developed are discussed. The methods involve evaporation/flame pyrolysis of a polymer/complex based precursor solution. Over fifty different ceramic oxides have been synthesized by the authors using the developed processes and the resulting powders are nanosized (10 to 90 nm in diameter), with narrow particle size distribution of high purity and are obtained at relative lower pyrolysis temperatures than those reported in literature so far. The methods are versatile and can be extended for the preparation of a variety of mixed-oxide systems. In addition, the methods are technically simple, and time and energy efficient, which makes the process cost effective and commercially viable for large-scale production of the fine mixed-oxide products 关键词: ceramics;decomposition;nanostructured materials;organic compounds;particle size;powder technology;pyrolysis;reviews;ceramic oxide nano-sized particles;synthesis methods;chemical processes;fine ceramic large-scale production;nano-sized ceramic oxides;flame pyrolysis;polymer/complex based precursor solution;polyvinyl alcohol;sucrose;organic amines;diethanolamine;triethanolamine;organic acids;rapid evaporation;fine oxide powder;exothermic decomposition;decomposition dissipation;particle size distribution;mixed-oxide systems;10 to 90 nm