A flowerlike sponge coated with carbon black nanoparticles for enhanced solar vapor generation

Sui, Yujin; Hao, Dandan; Cai, Zaisheng; Xu, Bi

doi:10.1007/s10853-019-03977-9

Cited by 44 publications

(23 citation statements)

References 34 publications

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“…where T (%), R (%), and A (%) refer to transmission, reflection, and absorption, respectively. [30] RS possesses a low light absorption capacity due to relatively high transmittance and reflectance in the visible and infrared regions (Figure 3a-c).…”

Section: Fabrication and Characterization Of Mwcnts-cb/rs Solar Evaporatormentioning

confidence: 99%

“…[22][23][24][25][26][27] So far, carbon-based materials are considered as one of the main light-absorbing materials for solar-steam-generation due to low cost, good light absorption, and excellent stability. [28,29] Typical carbon-based materials mainly include carbon black (CB), [30] graphite, [31] graphene oxide, [32] reduced graphene oxide, [33] and so on. In 2018, Xu et al reported a Janus membrane by coating CB on polymethylmethacrylate (CB-PMMA) and then electrospinning of polyacrylonitrile and CB-PMMA, and the results showed that photothermal conversion efficiency was 72%.…”

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confidence: 99%

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Construction of Novel Biomass‐Based Solar Evaporator with Asymmetric Dual‐Layer Structure for Water Desalination

Liu

et al. 2021

Advanced Sustainable Systems

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Solar desalination technology is regarded as a low‐carbon and environment‐friendly technology to address the water crisis. The current challenge is that sunlight irradiates directly the entire water body, resulting in a low photothermal conversion efficiency. Herein, a novel photothermal compound material with dual‐layer structure for solar‐steam‐generation is developed by depositing multi‐walled carbon nanotubes (MWCNTs) and carbon black nanoparticles (CB) onto a biomass reed straw (RS) skeleton. With respect to the lower layer of the resultant generator, the porous RS skeleton with open‐cell vessel channels and closed‐cell porous basic tissues can not only supply the water to the upper layer through the capillary force, but also insulate the heat transport. Additionally, the MWCNTs‐CB hybrid photothermal composite on the upper layer with large specific surface and roughness facilitates the evaporation of water by the generated heat from the absorbed solar light. The composite generator possesses an extremely high spectral absorption of ≈99% in wet state, along with a superb evaporation rate of ≈1.45 kg m−2 h−1 and photothermal conversion efficiency of ≈87.58% under one sunlight irradiation. Thus, the deposition of MWCNTs‐CB on a renewable biomass RS skeleton develops an ideal candidate generator that hold a desirable promise for applications in seawater desalination.

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Section: Fabrication and Characterization Of Mwcnts-cb/rs Solar Evaporatormentioning

confidence: 99%

mentioning

confidence: 99%

Construction of Novel Biomass‐Based Solar Evaporator with Asymmetric Dual‐Layer Structure for Water Desalination

Liu

et al. 2021

Advanced Sustainable Systems

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“…[ 37,38 ] Though the multilayer architecture overcomes the aforementioned challenge, water management through the system has to be engineered. Inserting cotton strip, [ 39 ] building a hydrophilic path with geopolymer powder, [ 40 ] and using GO pillar in the substrate [ 41 ] are some of the strategies used to manage the water rising in the system. In addition, using a hydrophilic layer on top of the hydrophobic substrate such as wood, [ 36 ] polyacrylonitrile, [ 42 ] and biocarbon foam [ 43 ] is considered.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Solar Steam Generators Based on Multicore@Shell Nanostructured Aerogels of Carbon and Silica as the Light Absorber−Heat Insulator

et al. 2021

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Herein, highly efficient, low‐cost, and lightweight solar steam generation systems are fabricated using engineered carbon and silica‐based porous nanostructures with 3D networks as light absorber and heat insulator, respectively. In this regard, systems with three different designs are considered to localize the heat efficiently through harvesting more photons and reducing heat losses. The fabricated systems are multilayered structures including polymeric foam and felt as the substrate and water‐carrier medium, respectively. Highly porous nanostructured particles of carbon aerogel (CA) as an absorber, silica aerogel (SiA) as a superinsulator, and multicore@shell aerogel of CA and SiA (CA core−SiA shell) as both absorber and insulator are synthesized. The used architectures are double layered (substrate covered by CA), triple layered (substrate covered by a layer of CA and a layer of SiA), and multicore@shell (substrate covered by CA−SiA multicore@shell aerogel). Using the double‐layered system, an efficiency of 83% corresponding to 1.2 kg m−2 h−1 water evaporation rate is achieved, which is enhanced to 90% in the triple‐layered system, where the SiA superinsulator is added. Remarkably, when the multicore@shell absorber−insulator is used, the efficiency increments of 27% and 16% are achieved compared with the double‐layered and triple‐layered ones with the same amount of absorber, respectively.

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“…Nondegradable polymer foams may also bring a huge burden to the environment. In addition, steam generation efficiency can be improved by changing the shape of the material to increase the sunlight absorption area and techniques like origami were used in the preparation of solar evaporation devices 41‐43 . However, such preparation process is labor‐intensive, and the complex device is unsuitable for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Robust, floatable, steam generator based on the graded porous polyimide film for efficient solar desalination

Zhang

Wang

et al. 2021

Polymers for Advanced Techs

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Solar‐driven seawater desalination is an environmental friendly technology that could relieve global water shortage. However, the practical applications of solar steam generating devices have been limited by the high energy consumption in the manufacturing process, low durability, and difficulties in large‐scale production had limited. Herein, we designed and prepared a polyimide film coated with polypyrrole with graded porous structures (PPy@PI).The photothermal PPy@PI has excellent mechanical properties and thermal stability and requires no nondegradable supporting polymer foam to float in water, making it ideal for desalination applications. Importantly, PPy@PI‐S prepared by single‐sided deposition of polypyrrole on the surface of the polyimide film has high light absorption capacity (93.57%) and low thermal conductivity under wet conditions (0.3641 W m−1 k−1). Under the irradiation of 1 sun (1 kW m−2), the evaporation rate was up to 1.23 kg m−2 h−1 corresponding to a solar energy conversion rate of 84%.The simple preparation process enables large‐scale preparation of PPy@PI.

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A flowerlike sponge coated with carbon black nanoparticles for enhanced solar vapor generation

Cited by 44 publications

References 34 publications

Construction of Novel Biomass‐Based Solar Evaporator with Asymmetric Dual‐Layer Structure for Water Desalination

Construction of Novel Biomass‐Based Solar Evaporator with Asymmetric Dual‐Layer Structure for Water Desalination

Highly Efficient Solar Steam Generators Based on Multicore@Shell Nanostructured Aerogels of Carbon and Silica as the Light Absorber−Heat Insulator

Robust, floatable, steam generator based on the graded porous polyimide film for efficient solar desalination

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