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Solar-powered and antibacterial water purification via Cu-BTC-embedded reduced graphene oxide nanocomposite aerogels

par Allahbakhsh, Ahmad ;Jarrahi, Zeinab;Farzi, Gholamali;Shavandi, Amin
Référence Chemical engineering journal, page (143472)
Publication Publié, 2023-05-01

Article révisé par les pairs

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Résumé :

Advancements in the design of porous active materials for interfacial solar evaporation have shown promise in the development of next-generation solar evaporation active materials that can present a wide range of water-purification properties. In this study, a new class of metal–organic nanoparticles-embedded reduced graphene oxide (rGO) nanocomposite aerogels is developed, with both solar steam generation behavior and antibacterial properties. The self-assembly process is used to introduce Cu-BTC nanoparticles (Cu-BTC NPs) into the structure of rGO aerogels to fabricate Cu-BTC/rGO nanocomposite aerogels. By varying the content of Cu-BTC NPs in the self-assembly precursor solution, the surface area, pore texture, and evaporation rate of samples are altered to reach both high energy conversion efficiency and antibacterial properties. An evaporation rate of 1.13 kg/m2h and an efficiency of 81.8% are achieved when the highest content of Cu-BTC NPs (1 mg/ml) is introduced to the precursor solution. This evaporation efficiency is 32% and 59% higher than that of the rGO aerogel and pure water, respectively. This behavior is related to the surface area and pore size of the nanocomposite aerogels, which increase and decrease with the content of Cu-BTC NPs, respectively. Additionally, the Cu-BTC/rGO aerogel presents antibacterial activity against S. aureus and E. coli. As a result, Cu-BTC/rGO nanocomposite aerogels have great potential as active materials for the design of next-generation solar steam generation systems for the treatment of wastewater contaminated with pathogenic bacteria.