A comprehensive review of the promising clean energy carrier: Hydrogen production, transportation, storage, and utilization (HPTSU) technologies

Fuel, Journal Year: 2023, Volume and Issue: 355, P. 129455 - 129455

Published: Aug. 16, 2023

Language: Английский

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Hydrogen energy systems: Technologies, trends, and future prospects

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 939, P. 173622 - 173622

Published: May 29, 2024

This review critically examines hydrogen energy systems, highlighting their capacity to transform the global framework and mitigate climate change. Hydrogen showcases a high density of 120 MJ/kg, providing robust alternative fossil fuels. Adoption at scale could decrease CO

Language: Английский

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Nanocatalysts in photocatalytic water splitting for green hydrogen generation: Challenges and opportunities

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 414, P. 137700 - 137700

Published: June 3, 2023

Language: Английский

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Review and meta-analysis of recent life cycle assessments of hydrogen production

Cleaner Environmental Systems, Journal Year: 2023, Volume and Issue: 9, P. 100116 - 100116

Published: April 10, 2023

The world is facing an urgent global climate challenge, and hydrogen (H2) increasingly valued as a carbon-free energy carrier that can play prominent role in decarbonising economies. However, the environmental impact of different methods for production are sometimes overlooked. This work provides comprehensive overview impacts costs diverse range producing hydrogen. Ninety-nine life cycle assessments (LCAs) published between 2015 2022 categorised by geography, method, source, goal scope, compared data sources methodology. A meta-analysis methodological choices used to identify subset mutually comparable studies whose results then compared, initially warming potential (GWP), low-GWP scenarios other indicators. show lowest GWP achieved currently more expensive (∼US $4–9/kg H2) dominant from fossil fuels $1–2/kg H2). research finds limited comparing indicators than GWP, such terrestrial acidification or freshwater eutrophication. Recommendations made future LCAs production.

Language: Английский

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Photo-assisted technologies for environmental remediation

Published: March 4, 2025

Language: Английский

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g-C ₃ N ₄ Photocatalysts: Utilizing Electron–Hole Pairs for Boosted Redox Capability in Water Splitting

Energy Material Advances, Journal Year: 2023, Volume and Issue: 4

Published: Jan. 1, 2023

Since the first discovery of solar-driven water splitting catalyzed by TiO 2 semiconductors, extensive research works have been devoted over decades. Currently, design a photocatalyst with dual redox potential is prominent interest to fully utilize both photogenerated electrons and holes in reactions. Among all, coproduction H O from using metal-free carbon nitride (g-C 3 N 4 ) has viewed as rising star this field. However, hole-mediated oxidation reaction commonly recognized rate-determining step, which drastically leads poor overall efficiency. On top that, rapid recombination undesirable back appeared one challenging parts splitting. In review, up-to-date advances modified g-C -based photocatalysts toward efficient are summarized, mainly classified into structural defect engineering, single-atom catalysis, cocatalyst loading, heterojunction construction. This review also addresses underlying idea concept tackle aforementioned problem use emerging modification strategies, hence serving guiding for future research. Despite outstanding breakthrough thus far, critical recommendations related photocatalytic systems prospected pave way implementation practical energy production process.

Language: Английский

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Transition into Net-Zero Carbon Community from Fossil Fuels: Life Cycle Assessment of Light-Driven CO₂ Conversion to Methanol Using Graphitic Carbon Nitride

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(14), P. 5547 - 5558

Published: March 1, 2023

Direct conversion of waste CO2 into CH3OH by solar irradiation has emerged as the most enthralling alternative to conventional steam methane reforming, which reduced concentration greenhouse gases and consumption fossil resources. A cradle-to-gate life cycle assessment was carried out assess environmental feasibility implementing current g-C3N4-based photocatalytic reduction system based on 1 kg production. It observed that emerging induced 68 53% less carbon footprint usage, respectively, in producing same amount compared approach. The reaction step identified main contributor system, accounted for more than 50% total impact scores. In score points global warming depletion contributed product purification desulfurization step, respectively. addition, sensitivity analysis manifested lowest burden 46.50 equiv emission 15.27 oil obtained upon replacing fossil-based energy with hydro-powered electricity. These results suggest a potent replacement incumbent industry amelioration climate benefits resource conservation advanced development system.

Language: Английский

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Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(14), P. 5782 - 5799

Published: March 30, 2023

Faced by the concerning climate change worldwide and agriculture-dependent biochemical energy-intensive thermochemical technologies, research development efforts in exploring sustainable ethanol synthesis toward carbon neutrality are urgent. Recently, an electrochemical process via electrocatalytic CO2 reduction reaction (CO2RR) to synthesize has emerged as a promising alternative approach directly consuming from atmosphere. Despite fact that numerous remarkable electrocatalysts with fascinating activity, selectivity, stability have been extensively uncovered this field, environmental impacts of technology rarely acknowledged. Herein, life cycle assessment (LCA) study is conducted evaluate potential benefits innovative versus conventional processes 1 kg ethanol. Impact results revealed contemporary electricity mix, still surpassed process, its benignity not pronounced, attributed tremendous utilities accounting for 67.7–100% impacts. However, it prevails over two routes when powered renewable energies, particularly solar energy, impact ranging 108.6 750.5%, while providing greatest respect terrestrial ecotoxicity (TETP). Carbon footprint further indicates becomes competitive reaches once driven intensity (CI) below 0.25 0.12 eq/kWh. Overall, spite massive utilities, route highly remediation coupled which calls more researchers governments achieve sustainability years come.

Language: Английский

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Shining Light on Carbon Aerogel Photocatalysts: Unlocking the Potentials in the Quest for Revolutionizing Solar‐to‐Chemical Conversion and Environmental Remediation

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(50)

Published: Aug. 7, 2023

Abstract The past few years have witnessed a surge of interest in the development carbon aerogel‐based photocatalysts, stemming from their fascinating characteristics that encompass inherent properties 2D carbon‐based nanomaterials and unique 3D structural features. Benefitting auspicious physicochemical characteristics, including low density, abundant active sites, remarkable electrical conductivity, aerogels emerged as promising candidates for photocatalysis energy environmental applications. Thus, this review presents panorama state‐of‐the‐art advancements underlying synthesis modifications nanocomposites enhanced performance photocatalytic synthetic strategies followed by roles aerogel are highlighted to decipher bolstering activity. Additionally, fundamental mechanism behind photocatalysts well thoroughly discussed. Thereafter, works on applications solar‐driven hydrogen evolution, CO 2 reduction, pollutant decontamination, bacteria inactivation, 5 summarized with insights into charge dynamics being unveiled. Lastly, will prospect ongoing challenges future outlook heterostructures photocatalysis, aiming facilitate at forefront research.

Language: Английский

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An overview of photocatalyst eco-design and development for green hydrogen production

Catalysis Communications, Journal Year: 2024, Volume and Issue: 187, P. 106859 - 106859

Published: Feb. 1, 2024

Photocatalysis emerged as a promising alternative to address fossil fuel scarcity and the limitations of other clean energy sources. enables hydrogen production via water splitting, using photocatalysts light irradiation, which can be stored utilized across various applications. has exhibited significant improvements yields in production, surpassing its initial stages. The current photocatalyst market offers diverse materials with unique characteristics, continuous evolution is observed their synthesis methods. This contribution aims compile recent literature on advancements for particular emphasis type, performance trends.

Language: Английский

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