Strachowski Tomasz, Grzanka Ewa, Mizeracki Jan, Chlanda Adrian, Baran Magdalena, Małek Marcin, Niedziałek Marlena
Research Group of Graphene and Composites, Lukasiewicz Research Network-Institute of Microelectronics and Photonics IMiF, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
Institute of High Pressure Physics PAS "Unipress", Sokolowska 29/37, 01-142 Warsaw, Poland.
Materials (Basel). 2021 Dec 29;15(1):245. doi: 10.3390/ma15010245.
The drawback of the hydrothermal technique is driven by the fact that it is a time-consuming operation, which greatly impedes its commercial application. To overcome this issue, conventional hydrothermal synthesis can be improved by the implementation of microwaves, which should result in enhanced process kinetics and, at the same time, pure-phase and homogeneous products. In this study, nanometric zinc aluminate (ZnAlO) with a spinel structure was obtained by a hydrothermal method using microwave reactor. The average ZnAlO crystallite grain size was calculated from the broadening of XRD lines. In addition, BET analysis was performed to further characterize the as-synthesized particles. The synthesized materials were also subjected to microscopic SEM and TEM observations. Based on the obtained results, we concluded that the grain sizes were in the range of 6-8 nm. The surface areas measured for the samples from the microwave reactor were 215 and 278 m g.
水热技术的缺点在于它是一项耗时的操作，这极大地阻碍了其商业应用。为克服这一问题，可通过引入微波来改进传统水热合成，这有望加快反应动力学，同时得到纯相且均匀的产物。在本研究中，采用微波反应器通过水热法制备了具有尖晶石结构的纳米级锌铝酸盐（ZnAlO）。通过XRD谱线的展宽计算出ZnAlO微晶的平均晶粒尺寸。此外，进行了BET分析以进一步表征合成的颗粒。还对合成材料进行了SEM和TEM微观观察。基于所得结果，我们得出晶粒尺寸在6 - 8纳米范围内。微波反应器样品的表面积分别为215和278 m²/g。
