Interfacial solar steam generation by sawdust coated with W doped VO2

Ghafurian, Mohammad Mustafa; Malmir, Mohammad Reza; Akbari, Zohreh; Vafaei, Mohammad Ali; Niazmand, Hamid; Goharshadi, Elaheh Kafshdare; Ebrahimi, Atefe; Mahian, Omid

doi:10.1016/j.energy.2022.123146

Cited by 15 publications

(10 citation statements)

References 63 publications

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“…The optimum value of thickness is chosen on the basis of the highest evaporation flux. The diameter of wood was considered as 40 mm on the basis of our recent works [8,36,39] . Both single‐ and double‐layer photothermal materials were fabricated.…”

Section: Methodsmentioning

confidence: 99%

“…[25][26][27][28][29][30][31] Wood has been extensively used in ISSG devices [30,[32][33][34][35] due to its excellent hydrophilicity, low TC, porous structure, accessibility, and abundance in nature. Several photoabsorbers were constructed by coating wood with plasmonic NMs, [36] semiconductor nanoparticles (NPs), [37][38][39] carbonaceous NMs, [40][41][42][43][44] or biomass carbon NMs. [45][46] For instance, the wood coated with carbon nanotubes was used in ISSG with 81 % efficiency under 10 sun (1 sun = 1000 W m À 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Photoabsorber for Highly Efficient Interfacial Solar Steam Generation and Wastewater Treatment

Mehrkhah

Goharshadi

et al. 2023

ChemistrySelect

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Interfacial solar steam generation (ISSG) is a sustainable and environmental-friendly technology for seawater desalination and wastewater purification using green and sustainable solar energy. Herein, a robust and efficient interfacial solar steam generation device or photoabsorber for ISSG of seawater and wastewater treatment was designed by coating wood with trace amount of Pd nanoparticles (NPs) and reduced graphene oxide (RGO). High evaporation flux of 5.25 kg m À 2 h À 1 was achieved by Pd20/RGO80/wood (a piece of wood was coated with 80 and 20 mg L À 1 of Pd NPs and RGO as a top and bottom layer, respectively) under 3 kW m À 2 . The value of electrical conductivity of seawater decreased from 6000.0 to 5.8 μS cm À 1 after desalination. The durability test showed the photoabsorber was stable for 30 cycles. The total cost to evaporation rate of the device was calculated as 0.29�0.003 USD/(cm 3 h À 1 ). The photoabsorber also showed excellent performance in wastewater treatment in removal of dyes of methylene blue and Reactive blue 5. Also, the concentration of heavy metals of Zn 2 + , Cd 2 + , Pb 2 + , Fe 2 + , Ni 2 + , and Cr 6 + reduced from 1000 ppm to near zero in the presence of photoabsorber.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multifunctional Photoabsorber for Highly Efficient Interfacial Solar Steam Generation and Wastewater Treatment

Mehrkhah

Goharshadi

et al. 2023

ChemistrySelect

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“…Yet when dealing with actual water sources (such as saltwater, river water, industrially contaminated water, groundwater, and city sewage), the longterm durability of electrospun nanofiber membranes and photothermal materials has been subject to considerable difficulty as far as sustainability is concerned. As observed by Kaur et al [63][64][65][66], the electrospun nanofiber membranes are in a 'cotton-like' state because they were spun with little structural integrity and fiber cohesion. That's why they are difficult to handle and unsuitable for many practical applications.…”

Section: Challenges and Future Workmentioning

confidence: 96%

Aspects of Polymeric-Based Membranes in the Water Treatment Field: An Interim Structural Analysis

Ijaz

Alharbi

Alsaggaf

et al. 2023

Water

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Solar-driven interfacial evaporation (SDIE) is considered a sustainable and environmentally friendly technology for using solar energy to produce fresh water, which is a crucial resource for the existence of human life. Porous membranes are widely used in SDIE owing to their porous structure, which is highly suitable for this kind of photothermal material and allows an efficient supply of water and escape of vapor during the evaporation process. Electrospinning is perhaps the most versatile technique to produce highly porous structures of nanofiber membranes with a large surface-to-volume ratio, high porosity, low density, and many advantages. Nevertheless, acquiring a stronger background on the initial research questions in this enticing field of research needs further investigation. Typically, for the enhancement of process control, the impact of flow rate on the morphology of the prepared membrane is quite important. This research article has two-fold objectives: firstly, it discusses the fundamental description of the photothermal conversion mechanism of polymer-based photothermal materials for water treatment. A systematic investigation supported by previous studies revealing the working mechanism and the design of solar-driven interfacial evaporation has been provided. On the other hand, our interim experimental results elaborate on the influence of process conditions such as electrospinning parameters on the structural morphology and diameter of fabricated electrospun nanofibers produced by using the coaxial electrospinning setup in our lab. The scanning electron microscope (SEM) was used to examine the morphology of the electrospun nanofibers. Our introductory results provide a useful insight into tuning the necessary process parameters to fabricate electrospun polyacrylonitrile (PAN) nanofiber membranes by electrospinning technique. From our preliminary results after the three processing experiments, it is revealed that a polymer concentration of 10% wt., an applied voltage of 20 kV, a tip-to-collector distance of 18 cm, and a flow rate of 0.8 mL/h produce the optimum nanofiber membranes with a uniform structure and a diameter in the range 304–394 nm. The variation in the diameter of nanofibers in the three processing conditions is endowed by the regulation of the initiating droplet extruded from the tip of the metallic needle (syringe jet) to the collector using the electrospinning setup.

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“…Over the last decade, different substrates like aerogels, paper, gauze, wood, and sawdust have been introduced in ISSG due to their good insulating property, biodegradability and low cost. 23 Among all, wood has better properties like low thermal conductivity, accessibility and high water transfer. The structure of the interfacial evaporator also plays a vital role in evaporation efficiency.…”

Section: Introductionmentioning

confidence: 99%

Waste sawdust-based composite as an interfacial evaporator for efficient solar steam generation

Rengasamy

Kamatchi

2023

RSC Adv.

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Interfacial solar steam generation by sawdust coated with W doped VO2

Cited by 15 publications

References 63 publications

Multifunctional Photoabsorber for Highly Efficient Interfacial Solar Steam Generation and Wastewater Treatment

Multifunctional Photoabsorber for Highly Efficient Interfacial Solar Steam Generation and Wastewater Treatment

Aspects of Polymeric-Based Membranes in the Water Treatment Field: An Interim Structural Analysis

Waste sawdust-based composite as an interfacial evaporator for efficient solar steam generation

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