Preparation of the floating HGMs-Ag3PO4 composites and the visible-light photocatalytic properties
The hollow glass microspheres (HGMs) with low density were used as the support to obtain the floating visible-light photocatalysts (HGMs–Ag _3 PO _4 ) composites, in which silver orthophosphate (Ag _3 PO _4 ) was dispersed on the surface of HGMs via silane coupling agents. The morphology, crystal st...
| Published in: | Materials Research Express |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2020-01-01
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| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab653d |
| Summary: | The hollow glass microspheres (HGMs) with low density were used as the support to obtain the floating visible-light photocatalysts (HGMs–Ag _3 PO _4 ) composites, in which silver orthophosphate (Ag _3 PO _4 ) was dispersed on the surface of HGMs via silane coupling agents. The morphology, crystal structure and optical property of the HGMs-Ag _3 PO _4 composites were characterized and the contents of Ag _3 PO _4 dispersed on the surface of HGMs were quantified by atomic absorption spectrometry (AAS). Methylene blue (MB) was selected as the typical organic pollutants to evaluate the photocatalytic activity of HGMs-Ag _3 PO _4 composite photocatalysts. The photo-catalytic rate of the floating composites was larger than the sinking composites and even pure Ag _3 PO _4 . Ag _3 PO _4 particles could be dispersed well on the HGMs. The floating composites has a larger light contact area and the increased photo-catalytic activity sites even at the low Ag _3 PO _4 loading. This work may open up a new insight for the floating photocatalyst to degrade organic dye on account of the low density and high visible-light responsiveness. |
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| ISSN: | 2053-1591 |