scholarly journals Simulation‐guided design of bamboo leaf‐derived carbon‐based high‐efficiency evaporator for solar‐driven interface water evaporation

2021 ◽  
Author(s):  
Yitian Wu ◽  
Rui Kong ◽  
Chaoliang Ma ◽  
Lanze Li ◽  
Yu Zheng ◽  
...  
Keyword(s):  
High Efficiency ◽  
Water Evaporation ◽  
Carbon Based

High efficiency LaOCl supported Fe-Fe3C-based catalyst for hydrogenation of nitroarenes fabricated by coordination-assisted-pyrolysis

2021 ◽  
Author(s):  
Xuewei Li ◽  
Wei She ◽  
Jing Wang ◽  
Weizuo Li ◽  
Guangming Li
Keyword(s):  
High Efficiency ◽  
Metal Organic Frameworks ◽  
Efficient Catalyst ◽  
Considerable Potential ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Metal Organic ◽  
Carbon Based

Bi-metal organic frameworks (Bi-MOFs) derived carbon-based catalysts have exhibited the considerable potential for hydrogenation reactions. However, designing a suitable bi-MOF to fabricate the highly efficient catalyst is still great challenge....

A photothermal and Fenton active MOF-based membrane for high-efficiency solar water evaporation and clean water production

2020 ◽  
Vol 8 (43) ◽  
pp. 22728-22735
Author(s):  
Xu Ma ◽  
Zheng Deng ◽  
Zhuoyi Li ◽  
Danke Chen ◽  
Xinyi Wan ◽  
...  
Keyword(s):  
High Efficiency ◽  
Water Evaporation ◽  
Contaminated Water ◽  
Clean Water ◽  
Evaporation Process ◽  
Water Production ◽  
Solar Water

A Fenton active Zr–Fc MOF-based membrane was designed for efficiently producing clean water from VOC contaminated water via the solar evaporation process.

Molybdenum Carbide/Carbon-Based Chitosan Hydrogel as an Effective Solar Water Evaporation Accelerator

2020 ◽  
Vol 8 (18) ◽  
pp. 7139-7149 ◽  
Author(s):  
Fang Yu ◽  
Zihe Chen ◽  
Zhenzhen Guo ◽  
Muhammad Sultan Irshad ◽  
Li Yu ◽  
...  
Keyword(s):  
Molybdenum Carbide ◽  
Water Evaporation ◽  
Chitosan Hydrogel ◽  
Solar Water ◽  
Carbon Based

scholarly journals Versatility of Carbon Enables All Carbon Based Perovskite Solar Cells to Achieve High Efficiency and High Stability

2018 ◽  
Vol 30 (36) ◽  
pp. 1804637 ◽  
Author(s):  
Xiangyue Meng ◽  
Junshuai Zhou ◽  
Jie Hou ◽  
Xia Tao ◽  
Sin Hang Cheung ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Stability ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Carbon Based

High-quality ultralong copper sulphide nanowires for promising applications in high efficiency solar water evaporation

2019 ◽  
Vol 3 (3) ◽  
pp. 394-398 ◽  
Author(s):  
Na Li ◽  
Dandan Yin ◽  
Lingling Xu ◽  
Hongyang Zhao ◽  
Zhengqing Liu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Water Evaporation ◽  
Copper Sulphide ◽  
High Quality ◽  
Solar Water ◽  
Highly Efficient ◽  
First Time

High-quality ultralong copper sulphide nanowires for highly efficient solar water evaporation performance have been synthesized for the first time.

scholarly journals Recent Progress in Carbon-Based Buffer Layers for Polymer Solar Cells

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1858 ◽  
Author(s):  
Nguyen ◽  
Nguyen ◽  
Nguyen ◽  
Le ◽  
Vo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Carbon Nitride ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Optoelectronic Devices ◽  
Carbon Quantum Dots ◽  
Buffer Layers ◽  
Future Directions ◽  
Carbon Based

Carbon-based materials are promising candidates as charge transport layers in various optoelectronic devices and have been applied to enhance the performance and stability of such devices. In this paper, we provide an overview of the most contemporary strategies that use carbon-based materials including graphene, graphene oxide, carbon nanotubes, carbon quantum dots, and graphitic carbon nitride as buffer layers in polymer solar cells (PSCs). The crucial parameters that regulate the performance of carbon-based buffer layers are highlighted and discussed in detail. Furthermore, the performances of recently developed carbon-based materials as hole and electron transport layers in PSCs compared with those of commercially available hole/electron transport layers are evaluated. Finally, we elaborate on the remaining challenges and future directions for the development of carbon-based buffer layers to achieve high-efficiency and high-stability PSCs.

Novel Carbon-based Solid Acid from Green Pistachio Peel as an Efficient Catalyst for the Chemoselective Acylation, Acetalization and Thioacetalization of Aldehydes, Synthesis of Biscoumarins and Antimicrobial Evaluation

2019 ◽  
Vol 7 (1) ◽  
pp. 55-80 ◽  
Author(s):  
Fatemeh Ghorbani ◽  
Seied Ali Pourmousavi ◽  
Hamzeh Kiyani
Keyword(s):  
Catalytic Activity ◽  
High Efficiency ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Hydrothermal Carbonization ◽  
Biomass Waste ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Carbon Based

Background: Much attention has been focused on heterogeneous catalysts. Reactions with these recoverable and reusable catalysts are clean, selective with high efficiency. Among the heterogeneous solid acid catalyst in organic synthesis, Carbon-Based Solid Acids (CBSAs), which are important solid acid with many practical and research applications have been extensively studied. In this work, green Pistachio peel, a biomass waste, was converted into a novel carbon-based solid acid catalyst (Pis-SO3H). Objective: The aim of this work is to synthesize highly sulfonated carbon as an efficient, recyclable, nontoxic solid acid catalyst by simultaneous sulfonation, dehydration and carbonization of green Pistachio peel as biomass and investigate the catalytic activity of Pis-SO3H in acetalization, thioacetalization, acylation of aldehydes and synthesis of 3,3'-Arylmethylene-bis(4-hydroxycoumarin) derivatives. Method: Pis-SO3H was synthesized by an integrated fast one-step hydrothermal carbonization and sulfonation process in the presence of sulfuric acid. The characterization of the physicochemical properties of Pis-SO3H was achieved by XRD, FT-IR, FE-SEM, and elemental analysis. Results: The result of acid-base titration showed that the total acidity of the catalyst was 7.75 mmol H+g−1. This new heterogeneous catalyst has been efficiently used for the chemoselective thioacetalization, acetalization and acylation of aldehyde and the synthesis of biscoumarins under solvent-free conditions. All the reactions work easily in high yields. The antimicrobial activity of some of the biscoumarins was evaluated in screening by disk diffusion assay for the zone of inhibition. Conclusion: The catalytic activity of the Pis-SO3H was investigated during acetalization, thioacetalization, acylation and synthesis of biscoumarins. The results of protection of carbonyl groups and synthesis of biscoumarins in the present work offer effective alternatives for environmentally friendly utilization of abundant biomass waste.

scholarly journals Biosolar cells: global artificial photosynthesis needs responsive matrices with quantum coherent kinetic control for high yield

2015 ◽  
Vol 5 (3) ◽  
pp. 20150014 ◽  
Author(s):  
R. L. Purchase ◽  
H. J. M. de Groot
Keyword(s):  
The Netherlands ◽  
Large Scale ◽  
Artificial Photosynthesis ◽  
High Efficiency ◽  
Raw Material ◽  
High Yield ◽  
Photosynthesis Research ◽  
Advantages And Disadvantages ◽  
Artificial Photosynthetic ◽  
Carbon Based

This contribution discusses why we should consider developing artificial photosynthesis with the tandem approach followed by the Dutch BioSolar Cells consortium, a current operational paradigm for a global artificial photosynthesis project. We weigh the advantages and disadvantages of a tandem converter against other approaches, including biomass. Owing to the low density of solar energy per unit area, artificial photosynthetic systems must operate at high efficiency to minimize the land (or sea) area required. In particular, tandem converters are a much better option than biomass for densely populated countries and use two photons per electron extracted from water as the raw material into chemical conversion to hydrogen, or carbon-based fuel when CO 2 is also used. For the average total light sum of 40 mol m −2 d −1 for The Netherlands, the upper limits are many tons of hydrogen or carbon-based fuel per hectare per year. A principal challenge is to forge materials for quantitative conversion of photons to chemical products within the physical limitation of an internal potential of ca 2.9 V. When going from electric charge in the tandem to hydrogen and back to electricity, only the energy equivalent to 1.23 V can be stored in the fuel and regained. A critical step is then to learn from nature how to use the remaining difference of ca 1.7 V effectively by triple use of one overpotential for preventing recombination, kinetic stabilization of catalytic intermediates and finally generating targeted heat for the release of oxygen. Probably the only way to achieve this is by using bioinspired responsive matrices that have quantum–classical pathways for a coherent conversion of photons to fuels, similar to what has been achieved by natural selection in evolution. In appendix A for the expert, we derive a propagator that describes how catalytic reactions can proceed coherently by a convergence of time scales of quantum electron dynamics and classical nuclear dynamics. We propose that synergy gains by such processes form a basis for further progress towards high efficiency and yield for a global project on artificial photosynthesis. Finally, we look at artificial photosynthesis research in The Netherlands and use this as an example of how an interdisciplinary approach is beneficial to artificial photosynthesis research. We conclude with some of the potential societal consequences of a large-scale roll out of artificial photosynthesis.

scholarly journals Hierarchical Porous Aero-Cryogels for Wind Energy Enhanced Solar Vapor Generation

2021 ◽  
Author(s):  
Shuai Li ◽  
Xiaochun Yang ◽  
Yingying He ◽  
Yanan Wang ◽  
Daogui Liao ◽  
...  
Keyword(s):  
Wind Energy ◽  
Evaporation Rate ◽  
High Efficiency ◽  
Pure Water ◽  
Water Evaporation ◽  
Vapor Generation ◽  
Hierarchical Porous ◽  
Evaporation Enthalpy ◽  
Absorbing Layer ◽  
Transport Channels

Abstract An integrated aero-cryogel (A-CG) monolith with hierarchical porous structure was developed by inter-crosslinking of cellulose nanofiber (CNF)/polylactic acid (PLA) nanocomposite aerogel and carboxymethyl cellulose (CMC) cryogel. The photothermal nanoparticles-enriched CMC cryogel phase served as a sunlight absorbing layer, exhibiting a broadband sunlight absorption of 98%. Due to the large amount of weakly bounded water molecules, the swelled CMC cryogel possessed a lower evaporation enthalpy than that of pure water, which facilitates water evaporation, while the nanocomposite aerogel phase acted as an excellent thermal insulator and afforded highly efficient water transport channels. Thus, the developed A-CG monolith supported by insulated polystyrene foam to protrude above the water surface, could reach an evaporation rate of 2.16 kg m-2 h-1 under an irradiation of 1 Sun (100 mw/cm2) with an efficiency of 93.6%. More remarkably, when the wind energy was imparted, an evaporation rate of 5.67 kg m-2 h-1 was achieved at a wind speed of 3 m s-1. The high-efficiency purification outcomes of various raw water demonstrate the great potentials of A-CG material in solar vapor generation.

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