Design of efficient photocatalytic processes for the production of hydrogen from biomass derived substrates

Ramis, Gianguido; Bahadori, Elnaz; Rossetti, Ilenia

doi:10.1016/j.ijhydene.2020.02.192

Cited by 40 publications

(23 citation statements)

References 59 publications

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“…The thorough evaluation of both reduction and oxidation products will facilitate the establishment of state-ofthe-art values for different materials and synthetic conditions leading to their integration in continuous flow reactors. [451,452] 3) To maintain a constant production of high-added value chemicals and avoid the decrease in the H 2 production and the complete oxidation of the biomass-derive organic molecule to CO 2 , aliquots of the hole scavenger shall be added periodically to the reaction media. The intervals will strongly depend in the electron-hole pair generation ability of the employed semiconductor as well as the reaction conditions.…”

Section: Photoelectrochemical Oxidation and Hydrogen Productionmentioning

confidence: 99%

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Luo

Barrio

Sunny

et al. 2021

Advanced Energy Materials

254

197

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Elevated concentrations of atmospheric greenhouse gases (GHGs), particularly carbon dioxide (CO 2 ), have affected the global environment, causing climate deviations and threatening the biodiversity. [1,2] Deep-cutting solutions and new technologies are thus imperative to repay the carbon debt. [3] Hydrogen (H 2 ) is an ideal fuel to enable a successful transition to a global zero emission economy: With a gravimetric energy density more than double that of conventional fuels like diesel, gasoline, and natural gas it is a lightweight energy carrier which can be converted to electricity and water via fuel cells and thus holds great promise to cut emissions of the transport and energy sectors to zero. Furthermore, it is an energy dense chemical which is already used in the chemical industry (i.e., ammonia via the Haber-Bosch process) and steel manufacturing. However, these industries currently use brown (made from coal via gasification and subsequent water gas shift reaction) and gray (made by steam methane reforming) hydrogen which both have significant CO 2 footprints. Thus, synthesizing green (meaning renewable) hydrogen cost-effectively is a solution which could green such industries and the transport sector and simultaneously meet our growing demands for viable energy storage solutions. However, switching from fossilfuels to a hydrogen economy requires efficient technologies that permit clean, sustainable and cost-effective production, storage, and utilization of H 2 . [4][5][6] Water electrolysis is a clean technology for green H 2 production, where water is split into H 2 at the cathode while O 2 is generated at the anode. Thermodynamically, the energy input required for this reaction equals an applied voltage of 1.23 V but in practice >1.8 V is commonly applied due to the sluggish kinetics of the oxygen evolution reaction (OER). The kinetics of the OER are complex. In addition to the thermodynamic potential of 1.23 V, even the best OER catalysts to date show significant overpotentials (0.35-0.4 V) which is due to suboptimal scaling relation between OOH and OH adsorption energies. [7,8] As a consequence, a significant amount of energy is spent on Biomass is recognized as an ideal CO 2 neutral, abundant, and renewable resource substitute to fossil fuels. The rich proton content in most biomass derived materials, such as ethanol, 5-hydroxymethylfurfural (HMF) and glycerol allows it to be an effective hydrogen carrier. The oxidation derivatives, such as 2,5-difurandicarboxylic acid from HMF, glyceric acid from glycerol are valuable products to be used in biodegradable polymers and pharmaceuticals. Therefore, combining biomass-derived compound oxidation at the anode and hydrogen evolution reaction at the cathode in a biomass electrolysis or photo-reforming reactor would present a promising strategy for coproducing high value chemicals and hydrogen with low energy consumption and CO 2 emissions. This review aims to combine fundamental knowledge on photo and electro-assisted catalysis to provide a comprehensive und...

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Section: Photoelectrochemical Oxidation and Hydrogen Productionmentioning

confidence: 99%

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Luo

Barrio

Sunny

et al. 2021

Advanced Energy Materials

254

197

View full text Add to dashboard Cite

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“…Ramis et al studied the use of other noble metal cocatalysts on TiO 2 including Au [40]. TiO 2 with Pt and Pd exhibited a higher photocatalytic activity than that with Au.…”

Section: Au/tiomentioning

confidence: 99%

“…Energy band positions, the work functions of the noble metals, and the electrochemical potentials of the redox couples involved. Reprinted with permission from Ramis et al[40] (Copyright 2020 Elsevier) Proposed mechanism of cellulose photoreformation into H 2 over a NiS/TiO 2 and b NiOx/TiO 2 . Reprinted with permission from Hao et al[41] and Zhang et al[42] (Copyright 2018 ChemPubSoc Europe and Royal Society Chemistry)…”

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confidence: 99%

Photocatalytic hydrogen evolution from biomass conversion

et al. 2021

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Biomass has incredible potential as an alternative to fossil fuels for energy production that is sustainable for the future of humanity. Hydrogen evolution from photocatalytic biomass conversion not only produces valuable carbon-free energy in the form of molecular hydrogen but also provides an avenue of production for industrially relevant biomass products. This photocatalytic conversion can be realized with efficient, sustainable reaction materials (biomass) and inexhaustible sunlight as the only energy inputs. Reported herein is a general strategy and mechanism for photocatalytic hydrogen evolution from biomass and biomass-derived substrates (including ethanol, glycerol, formic acid, glucose, and polysaccharides). Recent advancements in the synthesis and fundamental physical/mechanistic studies of novel photocatalysts for hydrogen evolution from biomass conversion are summarized. Also summarized are recent advancements in hydrogen evolution efficiency regarding biomass and biomass-derived substrates. Special emphasis is given to methods that utilize unprocessed biomass as a substrate or synthetic photocatalyst material, as the development of such will incur greater benefits towards a sustainable route for the evolution of hydrogen and production of chemical feedstocks.

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“…The results have been compared with the H 2 market price (mp) for the most interesting catalytic systems we tested or developed until now: bare P25, 1.0 wt % Cu/P25 and a 0.1 mol % Pt/P25, as reported elsewhere [32,50]. The highest value of hydrogen productivity was obtained with 0.1 mol % Pt/P25 (14.70 mol/kg cat h), which is a considerably high production rate with respect to previous studies [8,[10][11][12].…”

Section: Basic Cost Assessmentmentioning

confidence: 99%

“…The optimum operating conditions were set based on several screening tests conditions [32,50,67]: 80 • C, 4 bar, glucose concentration 5g/L, photocatalyst concentration 0.25 g/L.…”

Section: Activity Testingmentioning

confidence: 99%

Photoreforming of Glucose over CuO/TiO2

et al. 2020

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Hydrogen production has been investigated through the photoreforming of glucose, as model molecule representative for biomass hydrolysis. Different copper- or nickel-loaded titania photocatalysts have been compared. The samples were prepared starting from three titania samples, prepared by precipitation and characterized by pure Anatase with high surface area, or prepared through flame synthesis, i.e., flame pyrolysis and the commercial P25, leading to mixed Rutile and Anatase phases with lower surface area. The metal was added in different loading up to 1 wt % following three procedures that induced different dispersion and reducibility to the catalyst. The highest activity among the bare semiconductors was exhibited by the commercial P25 titania, while the addition of 1 wt % CuO through precipitation with complexes led to the best hydrogen productivity, i.e., 9.7 mol H2/h kgcat. Finally, a basic economic analysis considering only the costs of the catalyst and testing was performed, suggesting CuO promoted samples as promising and almost feasible for this application.

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Design of efficient photocatalytic processes for the production of hydrogen from biomass derived substrates

Cited by 40 publications

References 59 publications

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Photocatalytic hydrogen evolution from biomass conversion

Photoreforming of Glucose over CuO/TiO2

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