Enhanced wood-derived photothermal evaporation system by in-situ incorporated lignin carbon quantum dots

Chao, Weixiang; Li, Yudong; Sun, Xiaohan; Cao, Guoliang; Wang, Chengyu; Ho, Shih‐Hsin

doi:10.1016/j.cej.2020.126703

Cited by 95 publications

(31 citation statements)

References 56 publications

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“…Consequently, carbon materials are often combined with natural hydrophilic matrix (e.g., wood) to construct carbon-based hybrid absorbers with high hydrophilicity [34][35][36][37]. Chao et al [38] prepared a photothermal evaporation system by depositing a layer of carbon dots on the surface of wood, which showed good stability in solar desalination. Kim et al [39] fabricated a graphene-coated wood bilayer solar evaporator, which displayed a solar-to-vapor conversion efficiency of 92% and an evaporation rate of 1.64 kg m −2 h −1 under 1 kW m −2 irradiation.…”

Section: Introductionmentioning

confidence: 99%

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

et al. 2021

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Solar evaporation has emerged as an attractive technology to produce freshwater by utilizing renewable solar energy. However, it remains a huge challenge to develop efficient solar steam generators with good flexibility, low cost and remarkable salt resistance. Herein, we prepare flexible, robust solar membranes by filtration of porous carbon and commercial paper pulp fiber. The porous carbon with well-defined structures is prepared through controlled carbonization of biomass/waste plastics by eutectic salts. We prove the synergistic effect of porous carbon and paper pulp fiber in boosting solar evaporation performance. Firstly, the porous carbon displays a high light absorption, while the paper pulp fiber with good hydrophilicity effectively promotes the transport of water. Secondly, the combination between porous carbon and paper pulp fiber reduces the water vaporization enthalpy by 20%, which is important to significantly improve the evaporation performance. As a proof of concept, the porous carbon/paper pulp fiber membrane possesses a high evaporation rate of 1.8 kg m −2 h −1 under 1 kW m −2 irradiation. Thirdly, the good flexibility and mechanical property of paper pulp fiber enable the solar membrane to work well under extreme conditions (e.g., after 20 cycles of folding/stretching/ recovery). Lastly, due to the super-hydrophilicity and superwetting, the hybrid membrane exhibits the exceptional salt resistance and long-term stability in continuous seawater desalination, e.g., for 50 h. Importantly, a large-scale solar desalination device for outdoor experiments is developed to produce freshwater. Consequently, this work provides a new insight into developing advanced flexible solar evaporators with superb performance in seawater desalination.

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Section: Introductionmentioning

confidence: 99%

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

et al. 2021

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“…It has been reported that different device structures have a great influence on evaporation performance. Recently, researchers have studied different dimensions (1D, 2D, or 3D) to better adjust the relationship between water evaporation, solar conversion, and thermal regulation. − These results confirm that in addition to selecting high-efficiency photothermal materials, it is equally important for a researcher to consider water delivery balance, water content, and thermal insulation as the principles of designing solar evaporators. − In this regard, nature often brings a lot of inspiration for building high-performance devices. For example, Yu et al developed a lotus morphology-inspired solar evaporator modified by PDA for high-speed and persisting water evaporation .…”

Section: Introductionmentioning

confidence: 81%

Poly(N-phenylglycine)-Based Bioinspired System for Stably and Efficiently Enhancing Solar Evaporation

Lin

Shi

et al. 2020

ACS Sustainable Chem. Eng.

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Realizing high-efficiency solar evaporation has great potential for purification of sewage and seawater desalination. However, continuous water supply, solar energy conversion, and thermal management must be further studied to improve water evaporation. In this research, inspired by the Amazon water lily, an interfacial water-trapping tridimensional structure solar evaporator was developed to achieve continuous supply of water from the water-trapping layer and three-dimensional heat distribution management. First, an artificial photothermal membrane with poly(N-phenylglycine) (PNPG) was conveniently prepared by vacuum filtration. Then, combined with the three-dimensional heat distribution management design and the water-trapping layer for continuous supply of water, more optimized energy utilization and efficient interface heating were realized. Besides, because the novel nanoscale PNPG has excellent light capture performance and the absorbed solar energy can be concentrated in the water-trapping layer, the solar evaporation is more effective, showing higher energy efficiency (93.5%) and higher evaporation rate (1.72 kg m–2 h–1) under 1 sun. A special structure is designed to minimize energy loss and better regulate the connection between water evaporation, solar energy conversion, and thermal regulation. According to the results, these bioinspired solar evaporators can provide new ideas for designing high-efficiency solar evaporator structures and provide new opportunities for practical applications.

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“…Alkali lignin was employed as a precursor. Chao et al (2021) employed ligninderived carbon dots as photothermal thermogenesis materials to enhance wood-derived evaporation system. Herein, the ligninderived carbon dots were obtained by hydrothermal method.…”

Section: Lignin-derived Carbon Dotsmentioning

confidence: 99%

Multifunctional Lignin-Based Composite Materials for Emerging Applications

Kim

Liu

et al. 2021

Front. Bioeng. Biotechnol.

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Lignin exhibited numerous advantages such as plentiful functional groups, good biocompatibility, low toxicity, and high carbon content, which can be transformed into composites and carbon materials. Lignin-based materials are usually environmentally friendly and low cost, and are widely used in energy storage, environment, electronic devices, and other fields. In this review article, the pretreatment separation methods like hydrothermal process are illustrated briefly, and the properties and categories of technical lignin are introduced. Then, the latest progress of lignin-based composites and lignin-derived carbon materials is summarized. Finally, the current challenges and future developments were suggested based on our knowledge. It is expected that this review paper favored the applications of composites and lignin-derived carbon materials in the future.

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Enhanced wood-derived photothermal evaporation system by in-situ incorporated lignin carbon quantum dots

Cited by 95 publications

References 56 publications

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

High-performance salt-resistant solar interfacial evaporation by flexible robust porous carbon/pulp fiber membrane

Poly(N-phenylglycine)-Based Bioinspired System for Stably and Efficiently Enhancing Solar Evaporation

Multifunctional Lignin-Based Composite Materials for Emerging Applications

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