Results 61 to 70 of about 48,114 (219)

Eco‐Friendly Biomass‐Based Carbon Dots, Carbon Nanotubes, Graphene, and Their Derivatives for Enhanced Oil Recovery: A New Horizon for Petroleum Industry

open access: yesChemistryOpen, EarlyView.
This review explores the integration of biomass‐derived carbon nanomaterials in green enhanced oil recovery (GEOR) techniques. It highlights the challenges of conventional chemical EOR, emphasizing the environmental benefits of carbon dots, carbon nanotubes, and graphene derivatives.
Ruhul Amin Foisal   +2 more
wiley   +1 more source

Study on Cooling Characteristics of Water-based Carbon Nanotube Nanofluids for Internal Combustion Engines

open access: yesChemical Engineering Transactions, 2017
In the cooling system of internal combustion engines, traditional cooling water is replaced by the water-based carbon nanotube nanofluids. To cope with the overall method of six cylinder diesel engine, the cooling system and the solid components of ...
Haichao Liu, Xiaona Song, Yongwei Gao
doaj   +1 more source

Synthesis of Fe3O4@Au Core–Shell Nanoparticles with Varying Thicknesses for Application in Computed Tomography Imaging

open access: yesChemistryOpen, EarlyView.
To enhance resolution of medical images, core–shell Fe3O4@Au hybrid nanoparticles (HNPs) with gold shells of varying thicknesses are developed. In vitro testing data shows that HNPs with a 5–7 nm‐thick gold shell exhibits high X‐ray attenuation. The in vivo efficacy of HNPs is tested in liver and kidney tissues in a mouse model for study on drug ...
Nguyen Thi Ngoc Linh   +7 more
wiley   +1 more source

Analysis of the energy conversion properties and applications of Nanofluids: A review

open access: yesEnergy Reports, 2022
Nanofluids have evoked extensive interest from researchers around the globe due to their distinctive thermo-physical properties and numerous potential benefits and applications in important fields such as energy, aerospace, electronics, vehicles and ...
Shuai Liu   +3 more
doaj  

Solar‐Powered Green Hydrogen from Electrolyzer (PV‐H2): A Review

open access: yesSolar RRL, EarlyView.
This review highlights solar‐powered hydrogen production using electrolyzers. While direct photovoltaic (PV) coupling reduces costs, it poses stability challenges. Emerging PV types like floating PV offer integration benefits. However, large‐scale deployment faces issues like land use, high costs, and underexplored long‐term electrolyzer performance ...
Aritra Ghosh
wiley   +1 more source

Thermal performance evaluation for different type of metal oxide water based nanofluids

open access: yesCase Studies in Thermal Engineering, 2021
Nanofluid as advanced coolant able to enhance capability heat transfer of cooling system, but with abnormal enhancement of viscosity of nanofluids have raised doubt on its thermal performance in practical application.
Tang Tsz Loong   +3 more
doaj  

Exploration of Half‐Cycle Length of Converging Circular Wavy Duct with Diverging‐Outlet: Turbulent Water Dynamics

open access: yesAdvanced Theory and Simulations, Volume 8, Issue 7, July 2025.
Increasing half‐cycles intensifies turbulence due to enhanced vortex interactions and flow separation at the diverged‐outlets. Longer wavy ducts are shown to increase flow acceleration, resulting in greater output velocities and more turbulent‐kinetic‐energy production. Wave‐period plays a crucial role in determining turbulent intensity, with amplitude
I. L. Animasaun   +2 more
wiley   +1 more source

Synthesis and characterization of hybrid nanofluids and their usage in different heat exchangers for an improved heat transfer rates: A critical review

open access: yesEngineering Science and Technology, an International Journal, 2023
The heat exchangers are commonly used in thermal power companies, chemical factories, petroleum industries, and etc for the purpose of exchange heat from one fluid to another fluid.
L. Syam Sundar
doaj  

Performance Enhancement of Evacuated Tube Solar Collectors Using Fe3O4 Nanoparticle‐Enhanced Phase Change Materials for Efficient Thermal Energy Storage

open access: yesEngineering Reports, Volume 7, Issue 7, July 2025.
This study enhances ETSC performance using Fe3O4‐infused PCM, improving heat transfer and storage. At 0.6 wt.% Fe3O4, fluid temperature raise to 94.5°C, boosting thermal efficiency to 83.5% and exergy efficiency to 45.2%, demonstrating its potential for sustainable solar energy applications.
T. Sathish   +7 more
wiley   +1 more source

Review on Synthesis Methods of Carbon Nanotubes as Activated Carbon Composites Based on Biomass for Supercapacitors in Electric Vehicles

open access: yesEnergy Technology, Volume 13, Issue 7, July 2025.
This work reviews various methods to synthesize carbon nanotubes and analyzes the best methods to produce composites for supercapacitors for electric vehicles. Chemical vapor deposition is found to be the best method because the produced CNTs can be used directly without purification unless the catalyst particles need to be removed.
Apri Wiyono   +9 more
wiley   +1 more source

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