Aerogels in passive solar thermal desalination: a review

Farajzadeh, Masoud Rastgar; Jiang, Longxin; Wang, Chunrong; Sadrzadeh, Mohtada

doi:10.1039/d2ta05216d

Cited by 40 publications

(22 citation statements)

References 130 publications

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“…9a and b show the UV absorption spectra of MB solution and MO solution before and after removal, respectively. The removal rate can be calculated using eqn (8), as follows:…”

Section: Resultsmentioning

confidence: 99%

“…5,6 To date, ISSG has been widely implemented in desalination, sewage treatment, photothermal power generation, solar sterilization and other related aspects. [7][8][9] Nevertheless, the improvement in the ISSG performance is limited by energy loss due to thermal radiation and heat transfer to the surrounding environment and water. 10 Furthermore, the water path transporting bulk water to the evaporation surface is still unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing solar absorbance using a 2D graphene oxide/CuO composite film for efficient solar desalination

2023

Environ. Sci.: Water Res. Technol.

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“…9a and b show the UV absorption spectra of MB solution and MO solution before and after removal, respectively. The removal rate can be calculated using eqn (8), as follows:…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing solar absorbance using a 2D graphene oxide/CuO composite film for efficient solar desalination

2023

Environ. Sci.: Water Res. Technol.

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“…Low thermal conductivity is a critical factor in reducing energy loss via conduction of heat and enhancing the solar energy conversion efficiency. The thermal conductivity of the SBFAP material, identified with a thermal conductivity measurement system, was 0.084 and 0.137 W m –1 K –1 in the dry and wet states, respectively . In the wet conditions, the porous structure of the SBFAP material was filled with water molecules, resulting in its higher thermal conductivity.…”

Section: Resultsmentioning

confidence: 99%

Natural Cellulose Fiber-Derived Photothermal Aerogel for Efficient and Sustainable Solar Desalination

Nguyen

Bich

et al. 2023

Langmuir

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Aerogels are becoming a promising platform to fabricate photothermal materials for use in solar steam generation (SSG), which have remarkable application potential in solar desalination, due to their excellent thermal management, salt resistance, and considerable water evaporation rate. In this work, a novel photothermal material is fabricated by forming a suspension between sugarcane bagasse fibers (SBF) and poly(vinyl alcohol), tannic acid (TA), and Fe 3+ solutions via hydrogen bonds of hydroxyl groups. After freeze drying, the fabricated SBF aerogel-based photothermal (SBFAP) material possesses a 3D interconnected porous microstructure, which could enhance water transportation ability, reduce thermal conductivity, and quickly dissolve salt crystals on the SBFAP surface. Thanks to the formation of micro/nanosized complexes between TA and Fe 3+ ions on the SBFAP material, the SBFAP exhibits high light capture and water evaporation rate (2.28 kg m −2 h −1 ). In particular, due to strong hydrogen bonding and the SBF, the SBFAP material is reinforced, thereby exhibiting excellent structural stability in seawater. Moreover, the high salt tolerance of SBFAP favors its high desalination performance for at least 76 days of continuous evaporation under actual conditions. This research paves the way for the fabrication of natural cellulose fiber-based photothermal materials for application in solar desalination.

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“…Research on vapor generation using solar energy suggests that the highly porous structures of aerogels are ideal for water transport and vapor escape. Light absorbers based on highly porous aerogels have been previously investigated . Polymer aerogel-based light absorbers achieve a water evaporation rate of 1.66 kg m –2 h –1 under 1 sun irradiation .…”

Section: Introductionmentioning

confidence: 99%

“…Light absorbers based on highly porous aerogels have been previously investigated. 33 Polymer aerogel-based light absorbers achieve a water evaporation rate of 1.66 kg m −2 h −1 under 1 sun irradiation. 34 The polymer aerogels usually suffered from poor stability, narrowband solar absorption, or low scalability.…”

Section: Introductionmentioning

confidence: 99%

Aerogels Based on MXene Nanosheet/Reduced Graphene Oxide Composites with Vertically Aligned Channel Structures for Solar-Driven Vapor Generation

Zhou

Wang

et al. 2023

ACS Appl. Nano Mater.

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We fabricate MXene-reduced graphene oxide (rGO) hybrid aerogels with vertically aligned channel structures, where the framework of three-dimensional (3D) structures consists of MXene, and rGO nanosheets are attached to the MXene framework. MXene−rGO hybrid aerogels exhibit extremely high light absorption and excellent hydrophilicity, which facilitate vapor generation by harvesting solar energy. Moreover, vertically aligned channel structures dramatically enhance the water transport inside porous light absorbers and substantially reduce the light reflection loss and the heat loss due to multiple internal reflections. Meanwhile, the functional polar groups in the aerogels alter the states of water molecules because the water molecules have strong interactions with the functional polar groups. The coexistence of multiple water states (bound water, intermediate water, and free water) gives rise to the reduction of the vaporization enthalpy and fast water evaporation. The MXene−rGO hybrid aerogels achieve a water evaporation rate of 2.84 kg m −2 h −1 under 1 sun irradiation. The energy transfer efficiency is 96%. We also use the MXene− rGO hybrid aerogels to desalinate the seawater, and desalinated seawater meets the requirements for drinking water.

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Aerogels in passive solar thermal desalination: a review

Abstract: Climate change, the rapid growth of the world population, and pollution of water resources have led to increasingly severe water scarcity across the globe. Seawater desalination can significantly address the...

Cited by 40 publications

References 130 publications

Enhancing solar absorbance using a 2D graphene oxide/CuO composite film for efficient solar desalination

Enhancing solar absorbance using a 2D graphene oxide/CuO composite film for efficient solar desalination

Natural Cellulose Fiber-Derived Photothermal Aerogel for Efficient and Sustainable Solar Desalination

Aerogels Based on MXene Nanosheet/Reduced Graphene Oxide Composites with Vertically Aligned Channel Structures for Solar-Driven Vapor Generation

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