| Authors | Mozhgan Shahmirzaee - Mahdi Shafiee Afarani - Ahmad Iran Nejhad - Amir Masoud Arabi |
|---|---|
| Journal | Particulate Science and Technology |
| Page number | 110-117 |
| Volume number | 37 |
| IF | 1.424 |
| Paper Type | Full Paper |
| Published At | 2019 |
| Journal Grade | ISI |
| Journal Type | Typographic |
| Journal Country | United Kingdom |
Abstract
<p dir="ltr">ZnAl<sub>2</sub>O<sub>4</sub> and ZnO nanostructure particles and in situ crystallization of zinc aluminate and zinc oxide coating layers on sintered <i>α</i>-Al<sub>2</sub>O<sub>3</sub> and <i>γ</i>-Al<sub>2</sub>O<sub>3</sub> granules by the microwave-assisted combustion method were investigated. For powders, the effects of solution pH value and for coated samples the influence of support type on the structure, microstructure, and photocatalytic activity of powders were studied. Results showed that variation of synthesis pH value caused to considerable change in agglomeration, specific surface area, obtaining up to 88 and 92% yields for zinc aluminate and zinc oxide nanoparticles, respectively. <i>γ</i>-alumina granules were more appropriate supports than the <i>α</i>-alumina ones because of the better photocatalytic activities and lower extent of the attritions for both zinc aluminate and zinc oxide coating layers.</p>