Photoassisted H₂ production by metal oxide nanomaterials fabricated through CVD-based approaches

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• 作者：Chiara Maccato ; Davide Barreca ; Giorgio Carraro ; Alberto Gasparotto ; Valentina Gombac ; Paolo Fornasiero
• 关键词：Hydrogen production ; CVD ; RF sputtering ; Metal oxides ; Nanocomposites
• 刊名：Surface and Coatings Technology
• 出版年：2013
• 出版时间：15 September, 2013
• 年：2013
• 卷：230
• 期：Complete
• 页码：219-227
• 全文大小：1759 K

文摘

The development of efficient photocatalytic nanomaterials is of outstanding importance for the conversion of electromagnetic radiation into chemical energy. Among the various technological options, photoreforming of aqueous media containing suitable organic oxygenates is an attractive strategy towards a sustainable H₂ generation. In this regard, the present contribution will provide a survey of our recent research activities on photoactivated H₂ production over supported oxide-based nanosystems. Their preparation is carried out by original synthetic routes based on chemical vapor deposition (CVD), either thermal or plasma-enhanced (PE-CVD), in some cases combined with radio frequency (RF) sputtering. In particular, we will present and discuss the synthesis, characterization and functional performances of two material classes: (i) single-phase undoped (Cu_xO, with x = 1, 2; Co₃O₄) and anion-doped (F:Co₃O₄) metal oxides; (ii) oxide-based nanocomposites (Ag/ZnO and CuO/ZnO). Beside highlighting the potential of CVD routes in achieving specific nanosystem properties, the future challenges and perspectives for research advancements in these fields will also be outlined.