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Energies 2017, 10(10), 1624; https://doi.org/10.3390/en10101624

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

1
Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMAPI), ScuolaPolitecnica e delle Scienze di Base, Università di Napoli Federico II, p.le Tecchio, 80, 80125 Napoli, Italy
2
Istituto Ricerche sulla Combustione, Centro Nazionale delle Ricerche (IRC-CNR), p.le Tecchio, 80, 80125 Napoli, Italy
*
Authors to whom correspondence should be addressed.
Received: 6 September 2017 / Revised: 4 October 2017 / Accepted: 12 October 2017 / Published: 17 October 2017
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Abstract

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. View Full-Text
Keywords: hydrogen; solar fuels; water photosplitting; photoreforming; solar energy; nanotechnology; nanomaterials; heterojunction photocatalysis hydrogen; solar fuels; water photosplitting; photoreforming; solar energy; nanotechnology; nanomaterials; heterojunction photocatalysis
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Clarizia, L.; Russo, D.; Di Somma, I.; Andreozzi, R.; Marotta, R. Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials. Energies 2017, 10, 1624.

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