A new carbon-black/cellulose-sponge system with water supplied by injection for enhancing solar vapor generation

Liu, Shang; Huang, Congliang; Huang, Qiangqiang; Wang, Fengchao; Guo, Chuwen

doi:10.1039/c9ta02913c

Cited by 86 publications

(40 citation statements)

References 52 publications

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“…It involves radiative ($5.4%) and convective ($4.5%) heat loss to the ambient, and conductive ($4.1%) heat loss to the underlying water (detailed calculations are given in the ESI †). 19,20,29 First, the combination of the intrinsic strong and broad absorption of carbon black with the porous and rough structure ensures an efficient and broadband absorption in the entire sunlight wavelength. Then, the carbon bread could exchange the absorbed solar energy with the water to generate the steam efficiently due to the hydrophilicity and hierarchical pores.…”

Section: Heat Lossmentioning

confidence: 99%

“…[11][12][13][14] To this end, immense efforts have been dedicated to developing an advanced absorber to achieve the above properties. [13][14][15][16][17][18][19][20][21][22][23][24][25][26] So far, multitudinous materials including plasmonic metals, 13,[15][16][17][18] carbon-based nanostructures, 14,[19][20][21][27][28][29] semiconductors 22,23 and bio-inspired materials [24][25][26][30][31][32] have been investigated by researchers to boost the efficiency of solar energy harvesting further. For instance, Zhu's group 18 demonstrated a gold based plasmonic absorber, which has over 90% efficiency under 4 sun (4 kW m À2 ) illumination.…”

Section: Introductionmentioning

confidence: 99%

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Low-cost and scalable carbon bread used as an efficient solar steam generator with high performance for water desalination and purification

et al. 2021

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Section: Heat Lossmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low-cost and scalable carbon bread used as an efficient solar steam generator with high performance for water desalination and purification

et al. 2021

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“…Recent research on generating solar steam has focused primarily on exploring photothermal materials with high absorption in the solar spectrum. Many researchers have investigated plasmonic absorbers [29] and noble metallic and nonmetallic nanoparticles such as NiO nanoparticles, [30] MoS 2 nanosheets, [31][32][33][34] processed wood, [35][36][37] activated carbon, [38,39] carbon nanotube, [40][41][42] carbon black, [43][44][45] carbon foam, [43,[45][46][47] carbon fiber, [48][49][50] graphene and graphene oxide, [39,[51][52] Au nanoparticles [53][54][55][56][57] on finding efficient photothermal conversion materials for the top layer to absorb the incident solar irradiation and convert it into heat energy. Many research groups [58][59][60][61] demonstrated the use of 3D porous graphene/carbon hybrid aerogels as photothermal material and achieved significantly higher photothermal efficiency under 1 sun (1 sun = 1 kW m −2 ) illumination.…”

Section: Introductionmentioning

confidence: 99%

Solar Driven Interfacial Steam Generation Derived from Biodegradable Luffa Sponge

Saleque

Ahmed

et al. 2021

Advanced Sustainable Systems

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energy sector's two-superseding obstacles on the road to a sustainable future. [1][2][3] As the proven reserves of fossil fuels decrease, renewable energy sources have been sought in high demand, of which solar power is the most promising and potentially limitless source of energy in the foreseeable future. The energy from the sun to the earth is as high as 3 × 10 24 Jules per year, just 0.1% of the total solar resource would be sufficient to satisfy the annual worldwide energy demand. At present, solarsteam generation, which particularly refers to solar vapor under 100 °C, is considered to be one of the most promising sectors among other solar energy harvesting technologies owing to its potential applications in modern power plants, chemical plants, liquid-liquid phase separation, water purification and desalination, wastewater treatment, and many others. [4,[7][8][9][10][11][12][13][14] Among which water purification and desalination are gaining a lot of interest due to the recent lack of drinkable clean water supplies across the globe. Other competitive technologies for the production of freshwater, such as solid-liquid extraction, [13,15] electrochemical analysis [16,17] membrane-based separation, [18,19] etc. have many drawbacks, including high energy usage, possible environmental emissions, high infrastructure capital costs, etc.However, the efficiency of the traditional solar-steam generation method is below 24%, even with a high optical concentration ratio. [20] The traditional approach involves water evaporation by converting solar radiation directly to heat for steam generation commonly by using bulk metals. These bulk metals are inefficient in absorbing the solar spectrum and transferring heat through bulk water. As a consequence, its performance is limited by localized heat generation and transfer losses. [12,20,21] By contrast, interfacial solar vapor generation (ISVG) can localize the heat on the evaporation surface and, rather than the whole water, selectively heating the evaporation portion to minimize heat transfer to the water and significantly increase the solar evaporation efficiency. Therefore, ISVG has emerged as a novel concept for the solar steam generation with higher efficiency, attributes to the recent developments in nanoscale structural design with efficient photon and thermal management known as photothermal conversion materials. [1,[22][23][24][25][26] The photothermal conversion materials should have strong solar absorption and low thermal conductivity to achieve greater efficiency. [6,12] Moreover, it is also desirable to have superior hydrophilicity and porosity for fast water and A chemically treated luffa sponge (LS) derived from the ripe fruit of the Luffa cylindrica (LC) plant is investigated as an efficient solar photothermal conversion material for water purification applications for the very first time. Hydrophilicity and solar absorbance of the LS are enhanced by dopamine treatment and candle soot surface coating. The fabricated surface modified LS (SM-LS) leads to a sup...

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“…21,22 Considering the preparation technology and material cost, carbon black particles were utilized as the top layer for an easy future application. [23][24][25][26] Because of the low cost, natural mesoporous and sturdy structure, wood as the bottom layer has attracted much research interest recently. [27][28][29][30][31] Many bi-layer solar steam generation systems have already been built with woods as the bottom layer, such as the flame-treated wood, 32 plasmonic wood, 33 wood-graphene oxide composite, 34 carbon-wood, 35 and polydopamine-coated wood.…”

Section: Discussionmentioning

confidence: 99%

“…Many materials have been tested as a potential first‐layer material, such as carbon‐based materials, semiconductor films, and noble metal nanoparticles . Considering the preparation technology and material cost, carbon black particles were utilized as the top layer for an easy future application …”

Section: Introductionmentioning

confidence: 99%

Solar vapor generation optimization of a carbon‐black/wood‐flour system with strength enhanced by polystyrene

Huang

Liu

et al. 2020

Int J Energy Res

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Summary A solar vapor generation system with a high evaporation efficiency and also a high mechanical strength is still attractive, while most previous works only focused on efficiency. Herein, we firstly prepared a carbon‐black/wood‐flour system with strength enhanced by polystyrene. Then, we investigated the effects of porosity, polystyrene content, and thermal insulation on the evaporation performance of the system. Experimental results indicate that the porosity of system can significantly affect the evaporation efficiency. With the increase of porosity, there exists an optimal porosity to obtain a high evaporation efficiency. A higher content of polystyrene, which could cause a lower thermal conductivity of the system, always gives a higher evaporation efficiency when the porosity is fixed. For polystyrene content of 60 wt% and system porosity of 36%, under a 1‐sun irradiation, there is an optimal evaporation efficiency of about 80.4%. Additionally, the fracture stresses of the system in dry and wet states could be as high as 2.18 and 2.03 MPa, respectively, which ensures the system strength. Considering the high efficiency, high mechanical strength, low cost, and easy preparation, this system has a good potential to be used in practical applications.

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A new carbon-black/cellulose-sponge system with water supplied by injection for enhancing solar vapor generation

Abstract: The emerging solar vapor generation technology is becoming one of the most promising solar photothermal conversion technologies, which could relieve fresh water shortage.

Cited by 86 publications

References 52 publications

Low-cost and scalable carbon bread used as an efficient solar steam generator with high performance for water desalination and purification

Low-cost and scalable carbon bread used as an efficient solar steam generator with high performance for water desalination and purification

Solar Driven Interfacial Steam Generation Derived from Biodegradable Luffa Sponge

Solar vapor generation optimization of a carbon‐black/wood‐flour system with strength enhanced by polystyrene

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