Photocatalytic Hydrogen Production from Aqueous Solution of Various Oxidizing Sacrifice Agents

Deguchi, Seiichi; Shibata, Naoki; Takeichi, Toshinori; Furukawa, Yufu; Isu, Norifumi

doi:10.1627/jpi.53.95

Cited by 15 publications

(14 citation statements)

References 24 publications

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“…Figure 10 shows time plots of H 2 production from binary 20 vol %‐castor‐oil solution by P90 together with ST01, reagent by Wako and P25. As expected, it is seen that ST01 and reagent by Wako were less efficient for water splitting than P25 22. The most noteworthy is that P90 had a superior H 2 producing capacity of more than 15% compared to P25.…”

Section: Resultssupporting

confidence: 69%

“…Typically, the OSA are eatable hydrocarbons such as saccharides, alcohol and acetic acid, but the use of nonfood OSA such as cellulose, benzoic acids and pyroligneous acid has also been reported 15, 18, 22. Given this, saccharides and acetic acid were the preferred OSA in our recent study 22…”

Section: Introductionmentioning

confidence: 63%

“…TiO 2 powders utilized were P25 (a mixture of 70 mol %‐anatase form and 30 mol %‐rutile form) produced by Nippon Aerosil Co., Ltd. The P25 indicated superior H 2 producing efficiencies comparing to other commercial products used in our former studies such as famous ST01 produced by Ishihara Sangyo Kaisha, Ltd., and reagents purchased from Wako Pure Chemical Industries, Ltd., in our former studies 22–24. Next, Pt loading to TiO 2 powders was performed by photodecomposition of hexachloroplatinic acid 25.…”

Section: Introductionmentioning

confidence: 97%

“…The role of OSA is to scavenge the coproduced O 2 due to water splitting, and, thus, to prevent the reverse reaction of O 2 with H 2 to H 2 O from occurring 14–21. Typically, the OSA are eatable hydrocarbons such as saccharides, alcohol and acetic acid, but the use of nonfood OSA such as cellulose, benzoic acids and pyroligneous acid has also been reported 15, 18, 22. Given this, saccharides and acetic acid were the preferred OSA in our recent study 22…”

Section: Introductionmentioning

confidence: 99%

“…Main reactor was made of Pyrex glass in cylindrical shape of 90 mm internal diameter and 40 mm tall, having about 255 mL in volume. The cylinder had two taps for replacing air inside by Ar in order to obtain higher H 2 producing rates22 and to allow gas‐sampling. The top cover was made of solid quartz glass with high transmissivity toward ultraviolet rays.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic hydrogen production from water with nonfood hydrocarbons as oxidizing sacrifice agents

Deguchi¹,

Takeichi²,

Shimasaki³

et al. 2010

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com).To enhance photocatalytic water splitting, various oxidizing sacrifice agents (OSA) have been added to the system in order to scavenge the coproduced O 2 , and, thus, to hinder the reverse reactions. In the aim of achieving carbon-neutral photocatalytic water splitting, nonfood hydrocarbons of castor-and jojoba-oils were evaluated as OSA. Moreover, various surfactants were tested as emulsifiers for W/O binary solution for promoting photocatalytic water splitting rate. Among the OSA used, the castor-oil was found to be more suitable candidate compared to jojoba-oil, which was attributed to its smaller carbon chain numbers of mainly 18. Without surfactants, around 20 vol %-castor-oil aqueous binary solution with TiO 2 /Pt(0.10 wt %) provided the highest water splitting rate of about 30 mL-H 2 /(m 2 Áh). Among tested surfactants, liquid-detergent was the best due to its optical transparency. 40 vol %-or 60 vol %-castor-oil emulsion with a drop of liquid-detergent resulted in a water splitting rate of 125 mL-H 2 /(m 2 Áh), which was four times greater that the aforementioned highest value.

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Section: Resultssupporting

confidence: 69%

Section: Introductionmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Photocatalytic hydrogen production from water with nonfood hydrocarbons as oxidizing sacrifice agents

Deguchi¹,

Takeichi²,

Shimasaki³

et al. 2010

AIChE Journal

Self Cite

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Emerging Photoreforming Process to Hydrogen Production: A Future Energy

Shelake,

Sutar,

Abraham

et al. 2024

Adv Funct Materials

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In the quest of renewable energy technologies, solar photoreforming emerges as one of the affordable yet challenging process for converting biomass into hydrogen, hydrocarbon fuels, and chemicals. This review highlights the state‐of‐the‐art photoreforming, elucidating its underlying mechanisms for the conversion of dissipated polymers into H2 and valuable chemicals. Biomass feedstocks such as carbohydrates, agricultural residues, glycopolymers, food wastes, and waste plastics are evaluated based on their chemical composition, energy content, and sustainability aspects, exploring the selection of appropriate bio‐renewable resources, considering their abundance, availability, and potential for hydrogen production. The impact of diverse process parameters on photoreforming efficiency is explored, encompassing factors like reaction temperature, pH, catalyst loading, reactor design, solvent effect, and light intensity across various sacrificial substrates. The discussion also considers their correlation with hydrogen production rate, selectivity, and energy efficiency. This review buckles on the design and synthesis of functional photocatalysts for biomass‐derived feedstock, highlighting their photocatalytic (PC) properties in biomass reforming processes and related feedstock into valuable chemicals and biofuel. The review also delves into potential pathways for future advancements including artificial intelligence (AI) and machine learning (ML), alongside addressing the challenges and insightful perspectives within this evolving field of future green energy.

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Sonnengetriebene Wasserstofferzeugung aus Lignocellulose

Kuehnel

Reisner

2018

Angewandte Chemie

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Die photokatalytische Reformierung Lignocellulose‐haltiger Biomasse ist eine aufstrebende Methode zur Produktion von erneuerbarem H2. Dieser Prozess verbindet Photooxidation von Biomasse mit photokatalytischer Wasserstoffentwicklung bei Raumtemperatur und Atmosphärendruck. Die Umsetzung von Biomasse ist weniger energieaufwändig als Wasserspaltung und liefert dabei hochreinen H2, ohne dass sich O2 bildet. Die direkte Reformierung von unbehandelter Rohbiomasse birgt das Potenzial, weltweit lokal verfügbares Material als kostengünstige Energiequelle zu nutzen.

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Photocatalytic Hydrogen Production from Aqueous Solution of Various Oxidizing Sacrifice Agents

Cited by 15 publications

References 24 publications

Photocatalytic hydrogen production from water with nonfood hydrocarbons as oxidizing sacrifice agents

Photocatalytic hydrogen production from water with nonfood hydrocarbons as oxidizing sacrifice agents

Emerging Photoreforming Process to Hydrogen Production: A Future Energy

Sonnengetriebene Wasserstofferzeugung aus Lignocellulose

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