Tree-Inspired Aerogel with a Radial and Centrosymmetric Structure for Efficient Solar-Powered Water Purification

Li, Fangchao; Miao, Gan; Hou, Zhiqiang; Xu, Lide; Zhu, Xiaotao; Miao, Xiao; Song, Yali; Ren, Guina; Li, Xiangming

doi:10.1021/acsami.3c02867

Cited by 17 publications

(8 citation statements)

References 53 publications

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“…And the result was also confirmed by the XPS and FTIR analyses. The microchannel ensured rapid water transport, [46] and the presence of cross-linked pores on the surface of CSP allowed for complete water absorption within 605 ms (Figure 4a).…”

Section: Water Transport and Thermal Behaviormentioning

confidence: 99%

Carbonized Sweet Potato‐Based Evaporator for Highly Efficient Solar Vapor Generation

Wang,

Tian,

Huan

et al. 2023

Energy Tech

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Solar vapor generation has been considered an appealing way to solve freshwater scarcity issues. Although several natural materials have been developed, the exploration of biomass materials with stable evaporation, simple processes, and low energy consumption is still necessary. Herein, sweet potato, a high‐yield natural plant, is explored to prepare a solar evaporator with a cross‐linked porous structure. Carbonized sweet potato exhibits a high evaporation rate of 1.7 kg m−2 h−1 and an excellent solar–thermal conversion efficiency of 76% under 1 sun. This demonstrates excellent photothermal ability and enhanced water evaporation performance. Thanks to the unobstructed cross‐linking structure and fast water transport, the salt does not accumulate on the evaporator's surface in high‐salinity brine (10–20 wt% NaCl) and the evaporation rate is 1.35 kg m−2 h−1. This suggests superior evaporative stability and self‐desalting capability. The purpose of this study is to provide an eco‐friendly, stable, and efficient evaporator, with salt resistance by simple processes, and to demonstrate the potential application of biomass materials in solar vapor generation.

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Section: Water Transport and Thermal Behaviormentioning

confidence: 99%

Carbonized Sweet Potato‐Based Evaporator for Highly Efficient Solar Vapor Generation

Wang,

Tian,

Huan

et al. 2023

Energy Tech

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“…With the serous shortage of global freshwater, various novel technologies were developed for alleviate the water crisis. [1][2][3] Increasingly prominent pollution of dye wastewater is one reason for the shortage of water resource. To date, several techniques have been developed to remove contaminants from dye wastewater, including membrane separation, chemical precipitation, adsorption and biological degradation.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Porous Aerogels With Multiple Adsorptive Interactions for Dye Wastewater Purification

Gao,

Xu,

Ren

et al. 2024

Chemistry A European J

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Aerogels present a huge potential for removing organic dyes from printing and dyeing wastewater (PDW). However, the preparation of aerogels with multiple dye adsorption capabilities remains a challenge, as many existing aerogels are limited to adsorbing only a single type of dye. Herein, a composite aerogel (CG/T‐rGO) with the addition of carboxymethyl chitosan, gelatin and tannic acid reduced graphene oxide (T‐rGO) was synthesized by freeze‐drying technology. The electrostatic interactions between dye molecular and GEL/CMCS (CG) networks, as well as the supramolecular interactions (H‐bonds, electrostatic interactions and π‐π stacks) between T‐rGO, have endowed the aerogel with the ability to adsorb multiple types of dye, such as methylene blue (MB) and methyl orange (MO). Results exhibited that the prepared CG/T‐rGO aerogel possessed strong mechanical strength and a porous 3D network structure with a porosity of 96.33%. Using MB and MO as adsorbates, the adsorption capacity (88.2mg/g and 66.6 mg/g, respectively) and the mechanism of the CG/T‐rGO aerogel were investigated. The adsorption processes of aerogel for MB and MO were shown to follow the pseudo‐second‐order kinetic model and Langmuir isotherm model, indicating the chemical adsorption of a monolayer. The proposed aerogel in this work has promising prospects for dye removal from PDW.

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“…However, actual seawater desalination is an urgent need for real-world water purification. Meanwhile, in the real world, many domestic and industrial effluents contain complicated pollutants such as oils, emulsions, and corrosive liquids, and it is difficult for the state-of-the-art single-function solar interface device to harvest water without hazardous components . For example, the water-insoluble oily liquids tended to block the channels of the solar interface evaporators, resulting in a decrease in the water transport rate.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, more than 280 thousand tons of dye wastewater is discharged into the environment every year, causing serious environmental pollution, and there is a critical need for production clean water from dye wastewater. However, only a few reports have addressed the issue of obtaining fresh water from dye wastewater . Therefore, the development of a solar-powered interfacial evaporator with a wide adaptability to different environments is highly desirable in the actual production of clean water.…”

Section: Introductionmentioning

confidence: 99%

Versatile GO/ANFs Aerogel for Highly Efficient Solar-Powered Water Purification in Wide Environments

Gao,

Li,

et al. 2024

Langmuir

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Solar-driven interfacial evaporation is a very promising choice for producing clean water. Despite the considerable investigation of pure NaCl brine purification, solar-driven complex water purification, such as real-world seawater desalination as well as domestic and industrial wastewater treatment, has rarely been investigated, mainly due to its compositions being much more complicated than NaCl brine. Herein, we developed a graphene oxide/aramid nanofiber (GO/ANFs) aerogel by a freeze-drying process. The GO/ANFs aerogel combined opened porous microchannels, superhydrophilicity, anti-oil-fouling capacity, enhanced broadspectrum light absorption (more than 92%), and good solar/heat management. These integrated properties enabled the GO/ANFs aerogel to be an advanced solar interfacial evaporator for efficient freshwater production with the characteristics of localized heat conversion, quick water transport, and salt crystallization inhibition, and the rate of steam production rate was as high as 2.25 kg m −2 h −1 upon exposure to 1 solar irradiation. Importantly, the high-watervapor generation rate was maintained even under complicated conditions, including real-world seawater, dye water, emulsions, and corrosive liquid environments. Considering its promising adaptability to a wide range of environments, this work hopes to inspire the development of brine desalination, wastewater purification, clean water production, and solar energy utilization.

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Tree-Inspired Aerogel with a Radial and Centrosymmetric Structure for Efficient Solar-Powered Water Purification

Cited by 17 publications

References 53 publications

Carbonized Sweet Potato‐Based Evaporator for Highly Efficient Solar Vapor Generation

Carbonized Sweet Potato‐Based Evaporator for Highly Efficient Solar Vapor Generation

Hierarchical Porous Aerogels With Multiple Adsorptive Interactions for Dye Wastewater Purification

Versatile GO/ANFs Aerogel for Highly Efficient Solar-Powered Water Purification in Wide Environments

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