期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 277, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2021.119463
关键词
Solar steam; Interface heating; Polypyrrole
资金
- State Key Laboratory of Pollution Control and Resource Reuse Foundation [PCRRF20009]
- Innovation Team of Higher Educational Science and Technology Program of Shandong Province [2019KJA025]
This study developed a solar steam generating device with superhydrophobic photocatalytic layer and polypyrrole photothermal layer to address sewage treatment issues and improve steam production efficiency.
Given the problems in sewage treatment and clean water production, this study developed a solar steam generating device. Such a developed device comprised a superhydrophobic photocatalytic layer and a polypyrrole photothermal layer. To be specific, the superhydrophobic photocatalysts were capable of selectively adsorbing surface organic solvents and photodegrading dissolved pollutants, while the polypyrrole photothermal layer had a function of absorbing light energy and forming an interfacial heating layer to avoid heat loss. To improve the photodegradation ability, the photocatalyst of Bi2MoO6 was added, and its crystal structure and specific surface area were investigated specifically. The photocatalyst was supported on a fabric substrate to form a bulk material, thereby avoiding the defects of poor reuse of powder catalysts. After 8 cycles, the degradation efficiency remained higher than 98 %. In addition, the fabric exhibited an excellent mechanical stability, of which the average friction coefficient remains stable. Interestingly, after the sewage treatment, the fabric could act as the substrate of photothermal devices to ensure floating. The steam production efficiency was improved by the synergistic effect of the polypyrrole photothermal layer and the fabric.
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