Nanoenabled Photothermal Materials for Clean Water Production

Shamim, Tariq; Arshad, Naila; Wang, Xianbao

doi:10.1002/gch2.202000055

Cited by 68 publications

(50 citation statements)

References 211 publications

(369 reference statements)

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“…Furthermore, mass change for Fe 2 O 3 @PPy solar evaporator for multiple solar intensities was recorded, as provided in Figure S2. Although there are some solar steam generation devices reported for good evaporation rate, the major challenge being faced by these devices is the deformation of structural configuration with mechanical frailty mainly due to salt accumulation and surface distortion by the deposition of organic and inorganic impurities present in seawater, which leads to the compositional disintegration after operating a few cycles and lower efficiency of the device [5,12]. To address this, the evaporating device was operated for continuous operation for long-term performance to inspect the mechanical strength and persistence in evaporation efficiency, which reveals that Fe 2 O 3 @PPy remarkably achieved the consistency in steam generation under simulated seawater for continuous 8.3 h (33.84 kg m −2 ) with the minimal disparity in the evaporation rate under 1 kWm −2 , showing excellent scalability for operating over a long time period (Figure 5d).…”

Section: Fe 2 O 3 @Ppy Solar Evaporatormentioning

confidence: 99%

“…Various innovative technologies are being explored by researchers to meet this global challenge. These include graphene-based membranes [9], nanofiltration (NF) [10], nano adsorbent chillers [11], and solar-driven evaporation [12,13]. These emerging technologies are capable of converting waste heat into useful products in low-temperature conditions in remote sensing areas.…”

Section: Introductionmentioning

confidence: 99%

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Fe2O3 Nanoparticles Deposited over Self-Floating Facial Sponge for Facile Interfacial Seawater Solar Desalination

Arshad

Shamim

et al. 2021

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A facile approach for developing an interfacial solar evaporator by heat localization of solar-thermal energy conversion at water-air liquid composed by in-situ polymerization of Fe2O3 nanoparticles (Fe2O3@PPy) deposited over a facial sponge is proposed. The demonstrated system consists of a floating solar receiver having a vertically cross-linked microchannel for wicking up saline water. The in situ polymerized Fe2O3@PPy interfacial layer promotes diffuse reflection and its rough black surface allows Omni-directional solar absorption (94%) and facilitates efficient thermal localization at the water/air interface and offers a defect-rich surface to promote heat localization (41.9 °C) and excellent thermal management due to cellulosic content. The self-floating composite foam reveals continuous vapors generation at a rate of 1.52 kg m−2 h−1 under one 1 kW m−2 and profound evaporating efficiency (95%) without heat losses that dissipates in its surroundings. Indeed, long-term evaporation experiments reveal the negligible disparity in continuous evaporation rate (33.84 kg m−2/8.3 h) receiving two sun solar intensity, and ensures the stability of the device under intense seawater conditions synchronized with excellent salt rejection potential. More importantly, Raman spectroscopy investigation validates the orange dye rejection via Fe2O3@PPy solar evaporator. The combined advantages of high efficiency, self-floating capability, multimedia rejection, low cost, and this configuration are promising for producing large-scale solar steam generating systems appropriate for commercial clean water yield due to their scalable fabrication.

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Section: Fe 2 O 3 @Ppy Solar Evaporatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fe2O3 Nanoparticles Deposited over Self-Floating Facial Sponge for Facile Interfacial Seawater Solar Desalination

Arshad

Shamim

et al. 2021

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“…Figure 6 b represents the vapor condensation process from muddy wastewater and condensed water collection. According to WHO, statistics shows that 80% diseases spread by unsafe drinking water such as organic and inorganic toxins [ 4 , 35 , 36 , 37 ]. Mostly these toxins impurities are found in trace levels and many are responsible for the toxicity factors of the complex mixture, particularly wastewater, and are the principal cause of some of the world’s most dangerous bacterial infections.…”

Section: Resultsmentioning

confidence: 99%

“…Renewable energy resources play an essential role to meet these challenges, especially solar energy. Solar thermal technology is a direct means to harvest maximum solar energy in a wide range of heating and energy storage applications [ 1 , 2 , 3 , 4 ]. One of the most attractive approaches regarding solar harvesting is solar-driven evaporation, which comprises the generation of vapors below a boiling temperature and steam production.…”

Section: Introductionmentioning

confidence: 99%

Super Hydrophilic Activated Carbon Decorated Nanopolymer Foam for Scalable, Energy Efficient Photothermal Steam Generation, as an Effective Desalination System

et al. 2020

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Clean water scarcity is still an intense, prolonged global issue that needs to be resolved urgently. The solar steam generation has shown great potential with a high energy conversion efficiency for clean water production from seawater and wastewater. However, the high evaporation rate of water cannot be preserved due to the inevitable fouling of solar absorbers. Herein, a self-floatable and super hydrophilic solar-driven steam generator composed of activated carbon coated melamine foam (ACM). The deposited ACM photothermal layer exhibits outstanding solar absorption (92%) and an efficient evaporation rate of 1.27 kg m−2 h−1, along with excellent photothermal conversion efficiency (80%) as compared to commercially available primitive solar stills. The open porous assembly of melamine foam equipped with 80% flexibility (0.8 MPa) enabled smooth water transport and sustain heat accumulation within the matrix. The thermal insulation of ACM is 10 times greater than pure water. Moreover, open porous assembly of designed solar-powered steam generator rejects salt ions as well as volatile organic compounds efficiently. The low-cost and facile fabrication of photothermal based water production presents a potential solution to single step drinking water supply from various resources of the sea, the lakes and mixtures of emulsified oil and industrial wastewater.

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“…It can intrinsically dispense the incident light on the rugged surface and provide the basis for interfacial solar heating. [32][33][34] However, water transportation is also significantly improved due to the excellent superhydrophilic combination of in situ-polymerized nickel foam and PU substrate, whereas the rough surface texture boosts the wetting capacity. [26,35] Indeed, the micropores of both surfaces are naturally crosslinked and interconnected vertically to manifest the superhydrophilicity of the water channel for wicking up water and vapor escaping, as shown in Video S2, Supporting Information.…”

Section: Ipnf Solar Evaporatormentioning

confidence: 99%

Intensifying Solar Interfacial Heat Accumulation for Clean Water Generation Excluding Heavy Metal Ions and Oil Emulsions

et al. 2021

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Solar‐driven interfacial steam generation has emerged as an innovative technique for seawater desalination due to its high photothermal conversion efficiency and potential industrial applications. Herein, a superior interfacial heat accumulation structure composed of semiconductive in situ polymerization (polypyrrole) of nickel foam (IPNF) is reported. The IPNF photothermal layer is assembled with superhydrophilic polyurethane substrate for synchronous water transport and excellent thermal insulation. The 2D ultrablack mesh induces multiple incident rays within the diffused polymerized surface, which allows omnidirectional solar absorption (88.5 %) and intensifying heat localization (49.5 °C @ 1 sun). The state‐of‐the‐art evaporation performances reveal that the integrated IPNF solar evaporator exhibits an excellent evaporation rate (1.74 kg m−2 h−1) and solar‐to‐vapor conversion efficiency (90% excluding heat losses) under 1 kW m−2 solar intensity. Besides this, the long‐term evaporation experiments show negligible discrepancy under seawater conditions (13.27 kg m−2/8 h under 1 kW m−2) and engrain its functioning potential for multimedia and salt rejection (3.2 g × NaCl/240 min). More importantly, herein, insights into different water states in the polymeric network systems during solar‐driven evaporation are provided. This work shows a significant potential to generate freshwater excluding heavy metals and other oil emulsions for industrial applications.

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Nanoenabled Photothermal Materials for Clean Water Production

Cited by 68 publications

References 211 publications

Fe2O3 Nanoparticles Deposited over Self-Floating Facial Sponge for Facile Interfacial Seawater Solar Desalination

Fe2O3 Nanoparticles Deposited over Self-Floating Facial Sponge for Facile Interfacial Seawater Solar Desalination

Super Hydrophilic Activated Carbon Decorated Nanopolymer Foam for Scalable, Energy Efficient Photothermal Steam Generation, as an Effective Desalination System

Intensifying Solar Interfacial Heat Accumulation for Clean Water Generation Excluding Heavy Metal Ions and Oil Emulsions

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