Functional oil-repellent photothermal materials based on nickel foam for efficient solar steam generation

Zhao, Shuang; Chen, Lihua; Zhang, Chuantao; Hasi, Qi‐Meige; Zhang, Lu; Luo, Xiaoxing; Li, An

doi:10.1016/j.solmat.2020.110574

Cited by 30 publications

(12 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the core device for interfacial evaporation of SSG, − ideal photothermal materials should follow the following design criteria: wide solar absorption range, high light-to-heat conversion efficiency, low thermal conductivity, directional pores, and abundant porosity for water molecule transportation. − So far, a wide range of photothermal materials with their respective merits, including carbon-based materials, conjugated microporous polymers, composite materials, biomass materials, and metal nanomaterials, have been created for efficient solar interface evaporation . Basically, the SSG performance for the mentioned photothermal materials is usually evaluated in pure water or saline solutions in most cases. , As a matter of fact, for SSGs in an actual environment, unfortunately, there are a lot of organic pollutants or oil contaminates in water or seawater, which would dramatically impair their SSG efficiency due to the inevitable surface contamination of photothermal materials.…”

Section: Introductionmentioning

confidence: 99%

“…33−37 So far, a wide range of photothermal materials with their respective merits, including carbon-based materials, 38 conjugated microporous polymers, composite materials, 39 biomass materials, 40 created for efficient solar interface evaporation. 41 Basically, the SSG performance for the mentioned photothermal materials is usually evaluated in pure water or saline solutions in most cases. 42,43 As a matter of fact, for SSGs in an actual environment, unfortunately, there are a lot of organic pollutants or oil contaminates in water or seawater, which would dramatically impair their SSG efficiency due to the inevitable surface contamination of photothermal materials.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dual-Functional Graphene Oxide-Based Photothermal Materials with Aligned Channels and Oleophobicity for Efficient Solar Steam Generation

et al. 2021

Self Cite

View full text Add to dashboard Cite

Desalination by solar steam generation (SSG) has emerged as one of the most efficient approaches to address the issue of global water shortage. In this work, novel graphene oxide (GO)-based solar steam generators (GO-SSGs) with aligned channels were prepared by directional freezing and simple carbonization of a hydrogel composed of GO and poly(vinyl alcohol) (PVA). Benefitting from their excellent light absorption (light absorption efficiency exceeds 94%), better thermal insulation (thermal conductivity, 0.259 W/(m K)), and suitable porous structure, which facilitates rapid water transportation, the GO-SSGs show superior SSG performance with a high solar energy conversion efficiency of up to 92% achieved under an irradiation of 1.0 kW/m 2 . Interestingly, uniquely aligned channels endow them with good salt-rejection performance; the solar energy conversion efficiency of GO-SSGs in 20 wt % NaCl, KCl, and MgCl 2 brine can reach more than 85%. To improve their antifouling performance, a chemically hydrophilic and oleophobic modification was conducted, making it possible to run SSG even in oily wastewater; for instance, a solar energy conversion efficiency of 84% was obtained in an aqueous solution containing 10 wt % n-hexadecane. Compared with the existing photothermal materials, these materials show advantages of simple manufacture, high SSG efficiency, superior salt tolerance, and antifouling performance, which make them promising candidates as a kind of new high-performance photothermal materials for desalination even in oily wastewater, thus further expanding the scope of their practical SSG application.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Dual-Functional Graphene Oxide-Based Photothermal Materials with Aligned Channels and Oleophobicity for Efficient Solar Steam Generation

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…At present, the multifunctional photothermal materials requires the following aspects: high efficiency of photothermal conversion, [1][2][3][4][5][6][7][8] excellent salt resistance, [9][10][11][12][13][14][15] bactericidal and bacteriostatic effect, [16][17][18][19][20] anti-pollution capacity, [21][22][23][24][25][26] multi-effect utilization of energy, [27][28][29] and so on. In recent years, a lot of photothermal materials for solar-driven interface evaporator (SDIE) have been developed.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23] Modified photothermal materials can also maintain high evaporation efficiency in oily wastewater. 24,25 Metal-phenolic network-coated cellulose foam is beneficial to the purification of oil-layered seawater. 26 A novel bifunctional graphene aerogel prepared from bayberry tannin can be used to extract uranium from the ocean as an energy material.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional photothermal materials based on natural pumices for high efficiency solar‐driven interface evaporator

Jing

Zhou

et al. 2021

Int J Energy Res

View full text Add to dashboard Cite

The application of solar-driven interface evaporation photothermal materials in the complex water environment is facing great challenges, and the development of multifunctional photothermal materials is great significance to the practical application process. In this study, a new kind of photothermal material was first prepared based on the natural pumices, which shows great advantages of lightweight, superhydrophilicity, porous property, and heat insulation. To improve its light absorption capacity and photocatalytic effect, carbon and Ag + were uniformly loaded on pumices (named P-C-Ag + ). The as-resulted P-C-Ag + shows an evaporation rate of 1.395 kg m À2 h À1 which refers to an evaporation efficiency of 88.80% in simulated seawater under 1 kW m À2 illumination. In the rooftop experiment, the cumulative evaporation capacity of the simulated solar evaporator with P-C-Ag + in 8 hours can reach about 7.25 kg m À2 . Meanwhile, almost no salt crystallization was found in the surface of P-C-Ag + during the continuous evaporation process. The P-C-Ag + has a good inhibitory effect on Escherichia coli and algae, and can degrade color dyes, which is also beneficial to water environment, thus holding great potential as multifunctional photothermal material for solar steam generation and water treatment.

show abstract

“…[ 28–33 ] Evaporation performance has been dramatically elevated. [ 34–37 ] Both the solar thermal efficiency and theoretical evaporation rate (1.47 kg m −2 h −1 ) of DSSG under one‐sun illumination (1 kW m −2 ) have been very quickly developed to the limit. [ 38 ] There are also some reports whose evaporation rate is above the limit.…”

Section: Introductionmentioning

confidence: 99%

Energy Matching for Boosting Water Evaporation in Direct Solar Steam Generation

Wang

et al. 2020

Solar RRL

View full text Add to dashboard Cite

Energy matching strategy is verified as an effective method for significant improvement of evaporation rate in direct solar steam generation (DSSG). By adjusting the solid-liquid interface through bilayer structure, the water transport speed from reservoir to evaporation surface is controlled to reduce the required energy (RE) for closely matching with that of input energy (IE). The highest evaporation rate can reach up to 2.22 kg m À2 h À1 under one-sun illumination, which is improved by 40% through energy matching. A solar-to-vapor energy conversion efficiency of 93.2% is obtained. It is also highly effective in practical applications including desalination, sewage treatment, oil-water separation, and heavy metal ions treatment. This concept displays a balance between the energy needed for water waiting to be evaporated and the IE. It can inspire more ideas for researchers to accelerate the development of DSSG.

show abstract

Functional oil-repellent photothermal materials based on nickel foam for efficient solar steam generation

Cited by 30 publications

References 46 publications

Dual-Functional Graphene Oxide-Based Photothermal Materials with Aligned Channels and Oleophobicity for Efficient Solar Steam Generation

Dual-Functional Graphene Oxide-Based Photothermal Materials with Aligned Channels and Oleophobicity for Efficient Solar Steam Generation

Multifunctional photothermal materials based on natural pumices for high efficiency solar‐driven interface evaporator

Energy Matching for Boosting Water Evaporation in Direct Solar Steam Generation

Contact Info

Product

Resources

About