Architecting a Janus biomass carbon/sponge evaporator with salt-rejection and ease of floatation for sustainable solar-driven desalination

Xu, Keyuan; Wang, Chengbing; Li, Zhengtong; Yan, Xinyue; Mu, Xueyang; Ma, Miaomaio; Zhang, Pengkui

doi:10.1039/d1ew00070e

Cited by 19 publications

(9 citation statements)

References 37 publications

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“…Janus biomass carbon/sponge structure made by leaf particles and commercial melamine sponge can provide superior salt rejection capability. [ 154 ] The dried leaves are carbonized at 900 °C under vacuum for 2 h followed by grounding and mixing with absolute ethanol for obtaining carbon particles (CPs). Later, the carbon solution is poured into an evaporating dish and soaked horizontally by a melamine sponge.…”

Section: Device Design and Preparationmentioning

confidence: 99%

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

et al. 2022

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Food along with water, clothes, and shelter has long been considered as basic necessities for human life. [1] However, the reality is that people all around the globe continue to have difficulties in fulfilling their fundamental survival requirements. Rising population, unplanned urbanization, climate change, global energy, and natural resource crises are exacerbating these issues. Despite the fact that water covers more than three-quarters of the Earth's surface, providing fresh water as a fundamental requirement in certain drought-prone areas remains a problem. [2,3] Reducing the conflict between demand and availability for fresh water has become a significant problem in recent decades. According to World Health Organization (WHO), a shortage of freshwater resources may impact half of the world's population in the near future. [4,5] As a result, reliance on nontraditional sources, that is, purification of saltwater, sewage, and industrial effluents, must be increased to ease pressure on conventional water sources. [6][7][8] However, excessive levels of germs and hard particles in water from nontraditional sources may induce illnesses such as typhoid, jaundice, cholera, dysentery, and others. [9] Nevertheless, identifying alternative freshwater sources and implementing sustainable techniques for reusing and recycling water from unconventional sources may be a viable way to address the worldwide problem of freshwater shortage.Recent research on the generation of freshwater has revealed that methods such as reverse osmosis, electrodialysis, thermal desalination, and multiple-effect distillation need a high consumption of fossil fuels, a substantial initial investment, and the emission of polluting gas. [10][11][12] Thus, an interfacial solar-driven steam generation (ISSG)-based system is always recommended as a good candidate for seawater desalination, sterilizing, and wastewater treatment owing to its sustainability, cost-effectiveness, environmental friendliness, as well as ease of operation. In contrast to the natural water evaporation system, the ISSG-based system uses the heat localization method to heat only the portion of water which is associated with the airÀwater interface rather than the bulk water, substantially increasing the water evaporation rate. This technique utilizes the radiant heat from the sun with the assistance of photothermal energy conversion material, making it a promising sustainable solution to the water crisis. Furthermore, with proper design, heat loss can be minimized, allowing this technique to generate enough steam for water desalination, purification, and many other applications. [13][14][15][16][17][18][19] The selection of photothermal energy conversion materials for the ISSG mainly depends on the material's optical absorption spectra, photothermal conversion efficiency, sustainability, and duration of transmitting water to the heating surface (Figure 1). Researchers have investigated many naturally processed materials and nanoparticles (NPs) to design an efficient

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Section: Device Design and Preparationmentioning

confidence: 99%

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

et al. 2022

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“…Ultimately, from the present literature Janus nanoarchitectures can be established as futuristic smart material for which immense research is being carried out for photothermal desalination. Most recently, various Janus nanoarchitectures have been fabricated and investigated as an effective solar–steam generators for photothermal desalination and PMD, such as bioinspired Janus composites, [ 161 ] carbon/sponge evaporators, [ 162 ] Janus aerogel with antifouling characteristics, [ 163 ] Porphyrin–Ti 3 C 2 T x MXene Janus membrane, [ 164 ] PP nonwoven fabric incorporated with CNT/PPy fluorinated hydrophobic coated Janus structure, [ 165 ] GO/rGO Janus membrane, [ 166 ] PVDF ‐co ‐hexafluoropropylene (PVDF‐HFP) Janus nanofibrous mat, [ 167 ] Janus PP hollow fiber membrane (PP HFM), [ 168 ] and silicone/MWCNT superhydrophobic/superhydrophilic yolk/shell ( Table 4 ). [ 169 ]…”

Section: Photothermal Nanostructuresmentioning

confidence: 99%

Avant‐Garde Solar–Thermal Nanostructures: Nascent Strategy into Effective Photothermal Desalination

et al. 2022

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Photothermal interfacial evaporation (PTIE) draws the attention of researchers owing to its eco‐friendly approach of obtaining purified potable water from unusable seawater. The salience behind this technology ensures an indispensable commodity highly accessible via implementation of localized heating principles to vaporize seawater at water/air interface, instead of excessive energy consuming bulk‐water evaporating desalination systems. The significance of any technology depends on its component, and photothermal desalination technology lies on its material. In this review, focus on ultramodern nanomembranes, Janus nanoarchitectures, and reticular materials as promising solar–thermal nanostructures is highlighted. This report aims to inspire novel advancements in nanomaterials for photothermal desalination by providing cognizance into the mechanisms of photothermal conversion and principles of capillary action to construct innovative water pathway to continuously pump water with excellent salt‐rejecting feature, thereby enhancing PTIE performance. With desalination as the focus, insights into vapor condensation for the collection of desalinated water are discussed. Furthermore, reports on innovative solar‐driven water purification projects undertaken by different countries to be in action in the near future are incorporated. Eventually, this review sheds light on some practical outlook toward the optimization of judicious nanomaterials for a sustainable tomorrow.

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“…12,13 Owing to low cost, favorable thermal conductivity, black color, and high energy-conversion efficiency across the whole solar spectrum, carbon-based materials have been integrated with MoS 2 to operate as efficient solar steam generator composites. 14–20…”

Section: Introductionmentioning

confidence: 99%

“…12,13 Owing to low cost, favorable thermal conductivity, black color, and high energyconversion efficiency across the whole solar spectrum, carbonbased materials have been integrated with MoS 2 to operate as efficient solar steam generator composites. [14][15][16][17][18][19][20] For very effective solar steam generation, a localized photothermal membrane made of an ultrathin exible single-wall carbon nanotube (SWCNT)/MoS 2 composite lm has been used. The prepared free-standing lm displayed self-oating behavior and high light to thermal conversion efficiency, leading to an evaporative interface with the optimum temperature of 50 °C.…”

Section: Introductionmentioning

confidence: 99%

A hydrophilic carbon foam/molybdenum disulfide composite as a self-floating solar evaporator

et al. 2023

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Architecting a Janus biomass carbon/sponge evaporator with salt-rejection and ease of floatation for sustainable solar-driven desalination

Abstract: Solar steam generation technology is considered to be one of the most promising seawater desalination. To achieve a high and stable water production rate, absorber structure and salt deposition are...

Cited by 19 publications

References 37 publications

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

Avant‐Garde Solar–Thermal Nanostructures: Nascent Strategy into Effective Photothermal Desalination

A hydrophilic carbon foam/molybdenum disulfide composite as a self-floating solar evaporator

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