A hydrophilic carbon foam/molybdenum disulfide composite as a self-floating solar evaporator. Issue 3 (11th January 2023)

• Record Type: Journal Article
• Authors: Mohseni Ahangar, Ali; Hedayati, Mohammad Ali; Maleki, Mahdi; Ghanbari, Hajar; Valanezhad, Alireza; Watanabe, Ikuya
• Is Part Of: RSC advances. Volume 13:Issue 3(2023)
• Page Start: 2181
• Page End: 2189
• Publication Date: 2023-01-11
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra07810d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Solar-driven interfacial evaporation has gained increasing attention as an emerging and sustainable technology for wastewater treatment and desalinization. Abstract : Solar-driven interfacial evaporation has gained increasing attention as an emerging and sustainable technology for wastewater treatment and desalinization. The carbon/molybdenum disulfide (C/MoS2 ) composite has attracted more attention due to its outstanding light absorption capability and optoelectronic properties as a solar steam generator. However, the hydrophobic nature of carbon and MoS2 -based materials hinders their wettability, which is crucial to the effective and facile operation of a solar generator of steam. Herein, a pH-controlled hydrothermal method was utilized to deposit a promising photothermal MoS2 coating on melamine-derived carbon foams (CFs). The hydrophilic CF/MoS2 composite, which can easily be floatable on the water surface, is a high-efficiency solar steam evaporator with a rapid increase in temperature under photon irradiation. Due to the localized heat confinement effect, the self-floating composite foam on the surface of water has the potential to produce a significant temperature differential. The porous structure effectively facilitates fast water vapor escape, leading to an impressively high evaporation efficiency of 94.5% under a light intensity of 1000 W m −2 .