Journal ArticleDOI
Hierarchical Graphene Foam for Efficient Omnidirectional Solar-Thermal Energy Conversion.
Huaying Ren,Miao Tang,Baolu Guan,Kexin Wang,Jiawei Yang,Feifan Wang,Mingzhan Wang,Jingyuan Shan,Zhaolong Chen,Di Wei,Hailin Peng,Zhongfan Liu +11 more
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TLDR
H hierarchical graphene foam (h-G foam) with continuous porosity grown via plasma-enhanced chemical vapor deposition is reported, showing dramatic enhancement of broadband and omnidirectional absorption of sunlight, which thereby can enable a considerable elevation of temperature.Abstract:
Efficient solar-thermal energy conversion is essential for the harvesting and transformation of abundant solar energy, leading to the exploration and design of efficient solar-thermal materials. Carbon-based materials, especially graphene, have the advantages of broadband absorption and excellent photothermal properties, and hold promise for solar-thermal energy conversion. However, to date, graphene-based solar-thermal materials with superior omnidirectional light harvesting performances remain elusive. Herein, hierarchical graphene foam (h-G foam) with continuous porosity grown via plasma-enhanced chemical vapor deposition is reported, showing dramatic enhancement of broadband and omnidirectional absorption of sunlight, which thereby can enable a considerable elevation of temperature. Used as a heating material, the external solar-thermal energy conversion efficiency of the h-G foam impressively reaches up to ≈93.4%, and the solar-vapor conversion efficiency exceeds 90% for seawater desalination with high endurance.read more
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Solar absorber material and system designs for photothermal water vaporization towards clean water and energy production
TL;DR: In this article, the authors provide a comprehensive review on the current development in efficient photothermal evaporation, and suggest directions to further enhance its overall efficiency through the judicious choice of materials and system designs, while synchronously capitalizing waste energy to realize concurrent clean water and energy production.
Journal ArticleDOI
Challenges and Opportunities for Solar Evaporation
TL;DR: In this article, a review of recent developments in photothermal materials, with a focus on their photothermal conversion mechanisms as light absorbers, is presented, and the potential applications of this attractive technology in a variety of energy and environmental fields are described.
Journal ArticleDOI
Materials for solar-powered water evaporation
TL;DR: In this article, the fundamental principles of materials design for efficient solar-to-thermal energy conversion and vapour generation are summarized for both fundamental research and practical water-purification applications.
Journal ArticleDOI
A hydrogel-based antifouling solar evaporator for highly efficient water desalination
TL;DR: In this article, a hybrid hydrogel composed of a hydrophilic polymer framework (polyvinyl alcohol, PVA) and solar absorber (reduced graphene oxide, rGO), which has internal capillary channels was used for solar evaporation.
Journal ArticleDOI
Recent progress in solar-driven interfacial water evaporation: Advanced designs and applications
TL;DR: In this article, the authors provide a comprehensive summary of the recent development in interfacial photothermal evaporation and to inspire research efforts/translations from laboratory to practical large-scale solar-driven clean water production.
References
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Science and technology for water purification in the coming decades
Mark A. Shannon,Paul W. Bohn,Paul W. Bohn,Menachem Elimelech,Menachem Elimelech,John G. Georgiadis,Benito J. Mariñas,Anne M. Mayes,Anne M. Mayes +8 more
TL;DR: Some of the science and technology being developed to improve the disinfection and decontamination of water, as well as efforts to increase water supplies through the safe re-use of wastewater and efficient desalination of sea and brackish water are highlighted.
Journal ArticleDOI
Three-dimensional flexible and conductive interconnected graphene networks grown by chemical vapour deposition
TL;DR: The direct synthesis of three-dimensional foam-like graphene macrostructures, which are called graphene foams (GFs), by template-directed chemical vapour deposition is reported, demonstrating the great potential of GF/poly(dimethyl siloxane) composites for flexible, foldable and stretchable conductors.
Journal ArticleDOI
A graphene-based broadband optical modulator
Ming Liu,Xiaobo Yin,Erick Ulin-Avila,Baisong Geng,Thomas Zentgraf,Long Ju,Feng Wang,Feng Wang,Xiang Zhang,Xiang Zhang +9 more
TL;DR: Graphene-based optical modulation mechanism, with combined advantages of compact footprint, low operation voltage and ultrafast modulation speed across a broad range of wavelengths, can enable novel architectures for on-chip optical communications.
Journal ArticleDOI
Graphene photonics, plasmonics, and broadband optoelectronic devices.
Qiaoliang Bao,Kian Ping Loh +1 more
TL;DR: The latest progress in graphene photonics, plasmonics, and broadband optoelectronic devices is reviewed, with particular emphasis on the ability to integrate graphenePhotonics onto the silicon platform to afford broadband operation in light routing and amplification.
Journal ArticleDOI
3D self-assembly of aluminium nanoparticles for plasmon-enhanced solar desalination
TL;DR: In this article, a plasmon-enhanced solar desalination device, fabricated by the self-assembly of aluminium nanoparticles into a three-dimensional porous membrane, is demonstrated.