Spray-freezing induced multidimensional morphology tuning of assembled spherical carbon for solar-driven steam generation

Li, Da; Li, Ang; Chen, Yaxin; Chen, Guan-Yu; Chen, Xiaohong; Zhang, Dexu; Zhu, Haitao; Samo, Imran Ahmed; Song, Huaihe

doi:10.1016/j.carbon.2020.02.085

Cited by 12 publications

(8 citation statements)

References 42 publications

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“…Figure 3 e shows the comparison of the evaporation efficiency and evaporation rate of this work with different literature under one sun irradiation. It can be seen that this work is better than most reported studies [ 8 , 12 , 19 , 24 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Resultscontrasting

confidence: 47%

MoS2 Nanosheets Decorated with Fe3O4 Nanoparticles for Highly Efficient Solar Steam Generation and Water Treatment

Bai

Xu²,

et al. 2023

Molecules

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The shortage of water resources has always been one of the most difficult problems that perplexes humanity. Solar steam generation (SSG) has been a new non-polluting and low-cost water purification method in recent years. However, the high cost of traditional photothermal conversion materials and the low efficiency of photothermal conversion has restricted the large-scale application of SSG technology. In this work, composite materials with Fe3O4 nanospheres attached to MoS2 nanosheets were synthesized, which increased the absorbance and specific surface area of the composite materials, reduced the sunlight reflection, and increased the photothermal conversion efficiency. During the experiment, the composite material was evenly coated on cotton. The strong water absorption of cotton ensured that the water could be transported sufficiently to the surface for evaporation. Under one sun irradiation intensity, the evaporation rate of the sample synthesized in this work reached 1.42 kg m−2 h−1; the evaporation efficiency is 89.18%. In addition, the surface temperature of the sample can reach 41.6 °C, which has far exceeded most photothermal conversion materials. Furthermore, the use of this composite material as an SSG device for seawater desalination and sewage purification can remove more than 98% of salt ions in seawater, and the removal rate of heavy metal ions in sewage is close to 100%, with a good seawater desalination capacity and sewage purification capacity. This work provides a new idea for the application of composite materials in the field of seawater desalination and sewage purification.

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Section: Resultscontrasting

confidence: 47%

MoS2 Nanosheets Decorated with Fe3O4 Nanoparticles for Highly Efficient Solar Steam Generation and Water Treatment

Bai

Xu²,

et al. 2023

Molecules

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“…Apart from the typical shapes (i.e., cylinders and cubes) of interfacial SGs, interest has been growing in the design of self-floating polymeric spheres on water bodies, leading to synergistic solar evaporation and water–solute separation. − So far, a majority of sphere-like SGs are based on solid particles and synthetic polymers (i.e., polystyrene). , In another context, the replacement of petroleum-derived plastics by biopolymers is becoming a priority in environmentally friendly fabrication of 3D SGs. − As an example, biopolymers belonging to the polysaccharide family constitute a potential research field due to their availability, biocompatibility, noncompetitive use, and low carbon footprint. , Furthermore, the multilevel-scale pores and fibers formed inside the polysaccharide-based aerogels and hydrogels can provide sufficient binding sites and high surface areas, delivering their rich functionalities to interact with many chemical components in water. − Notably, the use of several biopolymers (i.e., cellulose, alginate, and chitosan (CS)) has emerged in 3D SGs for hybrid wastewater purification via chemical reactions, adsorption, and coagulation. − Taking into account waste material disposal and reuse, biopolymer degradation is highly appreciated in many industrial sectors (i.e., food, feed, biofuels, and biochemicals) and also gains access to sustainable agriculture as soil conditioners and nutrient carriers . Despite the progress in clean water production, the rational design of biopolymer-based 3D SGs, and their hybrid applications in water remediation, waste conversion and environmental sustainability is still beyond reach.…”

Section: Introductionmentioning

confidence: 99%

Photothermal Aerogel Beads Based on Polysaccharides: Controlled Fabrication and Hybrid Applications in Solar-Powered Interfacial Evaporation, Water Remediation, and Soil Enrichment

et al. 2022

ACS Appl. Mater. Interfaces

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Solar-powered interfacial evaporation has emerged as an innovative and sustainable technology for clean water production. However, the rapid, mass and shape-controlled fabrication of three-dimensional (3D) steam generators (SGs) for versatile hybrid applications remains challenging. Herein, composite aerogel beads with self-contained properties (i.e., hydrophilic, porous, photothermal, and durable) are developed and demonstrated for threefold hybrid applications including efficient solar-powered interfacial evaporation, water remediation, and controlled soil enrichment. The rational incorporation of selected polysaccharides enables us to fabricate bead-like aerogels with rapid gelation, continuous processing, and enhanced ion adsorption. The composite beads can attain a high water evaporation rate of 1.62 kg m–2 h–1 under 1 sun. Meanwhile, high phosphate adsorption capacity of over 120 mg g–1 is achieved in broad pH (2.5–12.4) and concentration (200–1000 mg L–1) ranges of phosphate solutions. Gratifyingly, we demonstrate the first example of recycling biomaterials from interfacial SGs for controlled nutrient release, soil enrichment, and sustainable agriculture. The phosphate-saturated beads can be gradually broken down in the soil. Macronutrients (N, P, and K) can be slowly released in 50 days, sustaining the plant germination and growth in a whole growth stage. This work shines light on the mass and controlled fabrication of aerogel beads based on double-network biopolymers, not merely scaling up solar-powered interfacial evaporation but also considering water remediation, waste material disposal, and value-added conversion.

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“…Among the various 3D rGO synthesis methods, such as chemical reduction process, [47][48][49] electrochemical process, 50,51 spray-freezing method was selected due to its 3D radially opened structural advantages. [52][53][54] Also, the spray-freezing method can directly utilize the aqueous GO solution and that process is safe and facile. sprGO is fabricated through lowtemperature spray-freezing method.…”

Section: Introductionmentioning

confidence: 99%

“…To compensate for this drawback, sprGO, which has a 3D morphology with graphene sheets, is suggested here. Among the various 3D rGO synthesis methods, such as chemical reduction process, 47‐49 electrochemical process, 50,51 spray‐freezing method was selected due to its 3D radially opened structural advantages 52‐54 . Also, the spray‐freezing method can directly utilize the aqueous GO solution and that process is safe and facile.…”

Section: Introductionmentioning

confidence: 99%

Maximizing the enzyme immobilization of enzymatic glucose biofuel cells through hierarchically structured reduced graphene oxide

Lee

Hyun

Park

et al. 2021

Intl J of Energy Research

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The number of immobilized glucose oxidase (GOx) molecules is considerably increased by the structural modification of reduced graphene oxide (rGO), and the performance of enzymatic biofuel cells (EBFCs) is positively affected by the modification process. To do this, new rGO with three-dimensional open porous structure is formed by spray freeze drying method (sprGO), while tetrathiafulvalene (TTF) as mediator, and GOx are sequentially immobilized onto sprGO. To improve the loading amount of catalyst, rGO structure is modified to open porous sprGO structure possessing numerous anchoring sites, after which gelatin film crosslinked by glutaraldehyde is fabricated onto sprGO to prevent any losses of other components (sprGO/[TTF-GOx]/crosslinked-gelatin). Specific surface area and charge transfer resistance of sprGO are quantitatively measured, and the actual amount of immobilized GOx and the performance of EBFC using this catalyst are electrochemically examined. With this, it is found that the amount of GOx immobilized in sprGO/[TTF-GOx]/

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Spray-freezing induced multidimensional morphology tuning of assembled spherical carbon for solar-driven steam generation

Cited by 12 publications

References 42 publications

MoS2 Nanosheets Decorated with Fe3O4 Nanoparticles for Highly Efficient Solar Steam Generation and Water Treatment

MoS2 Nanosheets Decorated with Fe3O4 Nanoparticles for Highly Efficient Solar Steam Generation and Water Treatment

Photothermal Aerogel Beads Based on Polysaccharides: Controlled Fabrication and Hybrid Applications in Solar-Powered Interfacial Evaporation, Water Remediation, and Soil Enrichment

Maximizing the enzyme immobilization of enzymatic glucose biofuel cells through hierarchically structured reduced graphene oxide

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