Khort Alexander, Podbolotov Kirill, Serrano-García Raquel, Gun'ko Yurii
Department of Glass and Ceramic Technologies, Belarusian State Technological University , Minsk 220006, Belarus.
Trinity College Dublin , Dublin 2, Ireland.
Inorg Chem. 2018 Feb 5;57(3):1464-1473. doi: 10.1021/acs.inorgchem.7b02848. Epub 2018 Jan 22.
In this paper, we report a new modified solution combustion synthesis technique for one-step production of metallic Co nanoparticles. The main unique feature of our approach is the use of microwave-assisted foam preparation. Also, the effect of different types of fuels (urea, citric acid, glycine, and hexamethylenetetramine) on the combustion process and characteristics of resultant solid products were investigated. It was shown that the combination of microwave-assisted foam and hexamethylenetetramine as a fuel allows us to produce metallic Co nanoparticles with the broad size distribution (∼5-40 nm), high coercivity (370 Oe), and high value of saturation magnetization (137 emu/g) by the one-step solution combustion synthesis under normal air atmosphere without any post reduction.
在本文中，我们报道了一种用于一步制备金属钴纳米颗粒的新型改进溶液燃烧合成技术。我们方法的主要独特之处在于使用微波辅助泡沫制备。此外，还研究了不同类型的燃料（尿素、柠檬酸、甘氨酸和六亚甲基四胺）对燃烧过程和所得固体产物特性的影响。结果表明，在正常空气气氛下，通过一步溶液燃烧合成，将微波辅助泡沫与六亚甲基四胺作为燃料相结合，我们能够制备出具有宽尺寸分布（约5 - 40纳米）、高矫顽力（370奥斯特）和高饱和磁化强度值（137电磁单位/克）的金属钴纳米颗粒，且无需任何后续还原处理。
