Biomass eggplant-derived photothermal aerogels with Janus wettability for cost-effective seawater desalination

Zhu, Ruofei; Wang, Dan; Zhang, Jichao; Yu, Zhihua; Liu, Mingming; Fu, Shaohai

doi:10.1016/j.desal.2022.115585

Cited by 71 publications

(18 citation statements)

References 47 publications

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“…From the thermodynamic point of view, the migration of crystalline salt to seawater is a spontaneous process driven by the chemical potential of different salt concentrations. , Under lights-out conditions, the evaporation of water slowed down, and the salt crystals were dissolved by unsaturated water in the pores . Driven by the chemical potential difference between water and membrane surface, the dissolved salt was refluxed passively along the water channel through diffusion. , This ability to automatically complete salt crystal removal without external force contributes to the long-term operation of the system and makes it applicable to practical applications …”

Section: Resultsmentioning

confidence: 99%

High-Porosity Lamellar Films Prepared by a Multistage Assembly Strategy for Efficient Photothermal Water Evaporation and Power Generation

Huang

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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The frame structure combined with water-and heattransfer capabilities fully satisfies the requirements of photothermal conversion materials in seawater evaporation applications. Meanwhile, it must integrate the characteristics of a high photothermal conversion rate, thermal management, and water transportation. Herein, lamellar porous films were successfully designed and synthesized by a simple ultrasonic-assisted vacuum filtration method. In this process, polystyrene sulfonate@carbon nanotubes/reduced graphene oxide (PSS@CNT/rGO) lamellar films were constructed by the one-dimensional synthesis of PSS@CNT self-assembled at the molecular scale and the two-dimensional matrix material rGO. It is worth noting that the lamellar film exhibits a high specific surface area (285.5 m 2 •g −1 ), which is reflected in its abundant nanopores. Among them, the porous network system composed of nanochannels can provide efficient water supply and steam-transfer ability and strengthen the heat insulation performance of thermal localization, which is beneficial to photothermal evaporation. The obtained PSS@CNT/rGO lamellar films achieved a condensed water yield of 1.825 kg•m −2 •h −1 under 1 sun illumination (1 kW•m −2 ), and their solar-vapor conversion efficiency was 97.1%. Simultaneously, the interaction between the water flow and the carbon material interface was also used to generate additional electric energy output. The maximum open-circuit voltage of 0.46 V was generated at both termini of the PSS@ CNT/rGO lamellar film, which successfully realized the multieffect utilization of energy. These results show that the multistage assembly strategy is a facile and effective means for the development of an efficient evaporation photothermal film, which offers significant value in the field of photothermal seawater evaporation and power generation.

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Section: Resultsmentioning

confidence: 99%

High-Porosity Lamellar Films Prepared by a Multistage Assembly Strategy for Efficient Photothermal Water Evaporation and Power Generation

Huang

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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“…Eggplant as a natural-derived biomass material was recently used to prepare a solar steam generator. 67 Fresh eggplant slices were soaked in tannic acid (TA) solution at room temperature. Aer 6 h stirring, Fe 2 (SO 4 ) 3 was added to the above solution, followed by freeze-drying for analysis showed that such steam generators could be made at a price of less than $1 per kg.…”

Section: Cost-effectivenessmentioning

confidence: 99%

Aerogels in passive solar thermal desalination: a review

et al. 2022

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“…SDIE has aroused great interest from researchers due to its advantages of green environmental protection, low cost and adjustable scale. 1–3 In recent years, increasing types of photothermal materials (PMs) have been designed based on interfacial evaporation, mainly including natural products, 4–10 polymers, 11–15 carbon materials, 16–21 and semiconductors. 22–27 Besides, the functions of the developed PMs are becoming increasingly comprehensive, mainly covering long-term salt resistance, 6,28–32 self-cleaning 33–37 and collaborative power generation.…”

Section: Introductionmentioning

confidence: 99%

Solar-driven interfacial evaporation for water treatment: advanced research progress and challenges

Jing

Xing

et al. 2022

J. Mater. Chem. A

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Biomass eggplant-derived photothermal aerogels with Janus wettability for cost-effective seawater desalination

Cited by 71 publications

References 47 publications

High-Porosity Lamellar Films Prepared by a Multistage Assembly Strategy for Efficient Photothermal Water Evaporation and Power Generation

High-Porosity Lamellar Films Prepared by a Multistage Assembly Strategy for Efficient Photothermal Water Evaporation and Power Generation

Aerogels in passive solar thermal desalination: a review

Solar-driven interfacial evaporation for water treatment: advanced research progress and challenges

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