Showing papers in "International Journal of Hydrogen Energy in 2020"

TL;DR: In this article, the authors presented the hydrogen-based energy system as four corners (stages) of a square shaped integrated whole to demonstrate the interconnection and interdependency of these main stages.

TL;DR: In this paper, a review of the development in TiO2 nanostructured materials for visible-light driven photocatalysis is presented, and the effects of various parameters on their photocatalytic efficiency, photodegradation of various organic contaminants present in wastewater, and photocatalyst disinfection are delineated.

TL;DR: A brief review of the state-of-the-art in the field of water electrolysis science and technology, including a description of the various water electrolytic technologies, and a discussion of the associated challenges and opportunities is presented in this paper.

TL;DR: In this article, a detailed overview of ammonia as a fuel for compression ignition engines is provided, which can be combusted with diesel or any other lower autoignition temperature fuel in dual-fuel mode and lead to a significant reduction of carbon-based emissions.

TL;DR: In this article, the authors investigated the possibility of hydrogen as a major fuel for transportation systems and investigated comprehensively based on the recent data published in the literature and concluded that hydrogen can become a promising fuel for sustainable transportation by providing clean, reliable, safe, convenient, customer friendly, and affordable energy.

TL;DR: In this paper, a review on the aspects of the syngas production from biomass gasification and its subsequent conversion into fuels through the Fischer-Tropsch synthesis is presented.

TL;DR: In this paper, a comprehensive review about the BP materials (metallic, non-porous graphite and composite materials) and corresponding fabrication methods, flow field layouts, and PEM fuel cells applications is presented.

TL;DR: A brief summary on the current and developing technologies of hydrogen that are noteworthy is provided in this paper, where easily obtained broad-spectrum knowledge on a variety of processes is involved as well as their advantages, disadvantages, and potential adjustments in making a process that is fit for future development.

TL;DR: In this paper, the authors report a techno-economic modelling for the flexible production of hydrogen and ammonia from water and optimally combined solar and wind energy, using hourly data in four locations with world-class solar in the Atacama desert and wind in Patagonia steppes.

TL;DR: In this article, the effects of temperature and dust accumulation on the solar PV panels on the design and performance of the hybrid power system in a desert region is investigated. But the main objective of the proposed off-grid hybrid renewable energy system is to increase the penetration of renewable energy in the energy mix, reduce the greenhouse gas emissions from fossil fuel combustion, and lower the cost of energy from the power systems.

TL;DR: The role of metal-organic frameworks (MOFs) as multifunctional photocatalysts for light-stimulated organic reactions through an effective combination of metal/ligand/guest-based photocatalyst is discussed in this article.

TL;DR: In this paper, a suitability assessment of European subsurface salt structures in terms of size, land eligibility and storage capacity is provided, with preference being given for salt caverns over bedded salt deposits and salt domes.

TL;DR: In this paper, the authors mainly focused on nanostructured metal oxide-based efficient photocatalysts for photoelectrochemical (PEC) water splitting applications, such as titanium dioxide (TiO2), zinc oxide (ZnO), and tungsten/wolfram trioxide (WO3).

TL;DR: In this article, a novel Ag3PO4/P-g-C3N4 photocatalyst was synthesized via microwave-assisted heating and ion exchange procedures, which showed high efficiency for photocatalytic hydrogen production.

TL;DR: In this paper, a review of recent developments in binary semiconductor materials and their application for photocatalytic water splitting toward hydrogen production are systematically discoursed, and the role of sacrificial reagents for efficient photocatalysis through reforming and hole-scavenger are elaborated.

TL;DR: In this article, the transition from hydrocarbon to H2 economy using fuel cells and H2 technologies is a sustainable and favorable approach forward in meeting stationary, transportation, industrial, residential, and commercial sectors.

TL;DR: A comprehensive review on biological hydrogen production including organisms, type of substrates and their concentrations, role of chemical addition, operation conditions such as temperature, pH, and agitation, as well as illumination systems in case of light dependent processes is provided in this article.

TL;DR: In this article, the major aspects of the current research in membrane separation technology for H2 purification, focusing on four major types of emerging membrane technologies (carbon molecular sieve membranes, ionic-liquid based membranes, palladium-based membranes and electrochemical hydrogen pumping membranes) are discussed.

TL;DR: In this paper, the authors reviewed the recent research progresses of transition metals, non metals, noble metals, semiconductor compounds, graphene, carbon nanotubes (CNTs), carbon dots and quantum dots, which were applied to photocatalytic H2 production.

TL;DR: In this article, the H2 generation over Ag-doped TiO2 photocatalyst, synthesized using a simple and cost-effective method based on chemical reduction, was reported.

TL;DR: In this paper, a well-to-wheels (WTW) energy use and emissions analysis was conducted to compare a HFCEV (Toyota Mirai) with a gasoline conventional internal combustion engine vehicles (Mazda 3).

TL;DR: In this paper, a brief representation of hydrogen fueled scramjet engine as well as the challenges associated with H2 fuel is discussed thoroughly and the advantage of hydrogen as a fuel as compared to other hydrocarbon fuel is also discussed.

TL;DR: This study presents a review of both external and internal components used in active systems, including the fuel and product management utilized in active DMFC, and summarizes the challenges and future advances in the design of active system DMFC.

TL;DR: In this paper, three different fermentation methods, such as photo-fermentation (PF), darkfermentation and dark-photo cofermentation, for bio-hydrogen production from corn stover were compared in terms of hydrogen production, substrate consumption, byproducts formation and energy conversion efficiency.

TL;DR: In this article, a realistic simulation of hydrogen fuel cell vehicles and the development of a lifecycle assessment (LCA) tool to calculate and compare the environmental impacts of fuel cell passenger vehicles with conventional vehicles with the results showed that fuel cell degradation undesirably affected the average fuel economy of the vehicle for about 23%.

TL;DR: The major objective of the H2 economy review series is to bring out the status, major issues, and opportunities associated with the key components such as H2 production, storage, transportation, distribution, and applications in various energy sectors.

TL;DR: In this article, the effects of hydrogen usage on engine performance and exhaust emissions as an additional fuel to internal combustion gasoline, diesel and LPG engines are explained, and it is understood that there will be a positive effect on the environment, due to hydrogen usage in all engine types.

TL;DR: In this article, the authors employed a linear programming model to assess the potential of renewable hydrogen power and its impact on electricity prices, measured the possible demand of wind-generated renewable hydrogen for light-duty vehicles, and recommended a policy shift to lightduty hydrogen-based vehicles to eliminate fossil fuel imports and ensure green supplies.

TL;DR: In this article, the ternary metal sulfides supported on nickel foam (MoCoNiS/NF) are successfully prepared using Mo doping Co-based metal-organic framework (Co-MOF) as precursor, which may be helpful for the good dispersion of different metal element.

TL;DR: In this article, the feasibility of hydrogen economy is discussed by reviewing viewpoints from the literature, and the challenges of China's transition to hydrogen economy are detailed summarized and discussed, and strategies for China to develop hydrogen economy were compared with that of Japan and Australia.