Continuous hydrogen production activity over finely dispersed Ag2O/TiO2 catalysts from methanol:water mixtures under solar irradiation: A structure–activity correlation

Lalitha, Kannekanti; Reddy, Jakkidi Krishna; Sharma, Mangalampalli V. Phanikrishna; Kumari, V. Durga; Subrahmanyam, M.

doi:10.1016/j.ijhydene.2010.01.106

Cited by 148 publications

(68 citation statements)

References 35 publications

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“…Ag and AgO were differently added to TiO 2 for use in the PR of methanol [138]. A broadband around 450-550 nm was observed corresponding to the surface plasmon resonance of silver particles, and the appearance of this band confirms the presence of metallic silver [139].…”

Section: Photoreforming Of Alcoholsmentioning

confidence: 90%

Hydrogen Production by Photoreforming of Renewable Substrates

Rossetti

2012

ISRN Chemical Engineering

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This paper focuses on the application of photocatalysis to hydrogen production from organic substrates. This process, usually called photoreforming, makes use of semiconductors to promote redox reactions, namely, the oxidation of organic molecules and the reduction of H + to H 2 . This may be an interesting and fully sustainable way to produce this interesting fuel, provided that materials efficiency becomes sufficient and solar light can be effectively harvested. After a first introduction to the key features of the photoreforming process, the attention will be directed to the needs for materials development correlated to the existing knowledge on reaction mechanisms. Examples are then given on the photoreforming of alcohols, the most studied topic, especially in the case of methanol and carbohydrates. Finally, some examples of more complex but more interesting substrates, such as waste solutions, are proposed.

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Section: Photoreforming Of Alcoholsmentioning

confidence: 90%

Hydrogen Production by Photoreforming of Renewable Substrates

Rossetti

2012

ISRN Chemical Engineering

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“…In the case of photoreforming, hydroxyl groups on the surface act as adsorption centers for sacrificial agents and scavenging sites for photogenerated holes [162]. It is reported that hydrogen production increases with increasing concentration of sacrificial agents [163], although very high concentrations of organics result in being detrimental for hydrogen generation as the adsorption sites of the photocatalyst are saturated [16,164].…”

Section: Ph Of the Solutionmentioning

confidence: 99%

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

et al. 2017

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Photocatalytic water splitting and organic reforming based on nano-sized composites are gaining increasing interest due to the possibility of generating hydrogen by employing solar energy with low environmental impact. Although great efforts in developing materials ensuring high specific photoactivity have been recently recorded in the literature survey, the solar-to-hydrogen energy conversion efficiencies are currently still far from meeting the minimum requirements for real solar applications. This review aims at reporting the most significant results recently collected in the field of hydrogen generation through photocatalytic water splitting and organic reforming, with specific focus on metal-based semiconductor nanomaterials (e.g., metal oxides, metal (oxy)nitrides and metal (oxy)sulfides) used as photocatalysts under UVA or visible light irradiation. Recent developments for improving the photoefficiency for hydrogen generation of most used metal-based composites are pointed out. The main synthesis and operating variables affecting photocatalytic water splitting and organic reforming over metal-based nanocomposites are critically evaluated.

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“…However, exceedingly higher amount of hydrogen (about 570 mmol h −1 ) was produced by CuS/TiO 2 composite in presence of methanol, which corresponds to 32 times of the performance of P25-TiO 2 used under the same condition (Wang et al 2013). Noble metal compounds and the metal loaded photocatalysts have also shown high photocatalytic activity for hydrogen production including Ag 2 O(1 wt%)-loaded TiO 2 (H 2 production rate = 3,350 μmmol h −1 ) (Lalitha et al 2010), dye-sensitised or bare platinised TiO 2 (Kandiel et al 2011) and gold-loaded TiO 2 (Rayalu et al 2013).…”

Section: Photocatalytic Hydrogen Productionmentioning

confidence: 90%

Perspectives and Advances in Photocatalysis

Gaya

2013

Heterogeneous Photocatalysis Using Inorganic Semiconductor Solids

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Interest in heterogeneous photocatalysis has heightened in the past 40 years, underscoring several perspectives and advances. A collection of applications including solar to fuel cells, intelligent ink and remote photocatalysis have been closely examined. As an emerging panacea for the treatment of recalcitrant pollutants, heterogeneous photocatalytic degradation has been highlighted with specific reference to synthetic aliphatic and aromatic organic substances. What's more, various treatment technologies for integration with photocatalytic degradation have been outlined.

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Continuous hydrogen production activity over finely dispersed Ag2O/TiO2 catalysts from methanol:water mixtures under solar irradiation: A structure–activity correlation

Cited by 148 publications

References 35 publications

Hydrogen Production by Photoreforming of Renewable Substrates

Hydrogen Production by Photoreforming of Renewable Substrates

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

Perspectives and Advances in Photocatalysis

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