Hydrogen Production from Water by Photolysis, Sonolysis and Sonophotolysis with Solid Solutions of Rare Earth, Gallium and Indium Oxides as Heterogeneous Catalysts

Sustainability

Marta Penconi¹  Federico Rossi²  Fausto Ortica¹  Fausto Elisei¹  Pier Luigi Gentili¹ 

[1]Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy

[2] E-Mails:

[3]Inter-University Research Center on Pollution and Environment “Mauro Felli” (CIRIAF), Via G. Duranti 67, 06125 Perugia, Italy

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关键词: hydrogen energy;    solar energy;    photocatalysis;    sonochemistry;    synergy;    metal oxides;    sulphur-doping;   

DOI  :  10.3390/su7079310

来源: mdpi

【 摘 要 】

In this work, we present the hydrogen production by photolysis, sonolysis and sonophotolysis of water in the presence of newly synthesized solid solutions of rare earth, gallium and indium oxides playing as catalysts. From the experiments of photolysis, we found that the best photocatalyst is the solid solution Y_0.8Ga_0.2InO₃ doped by sulphur atoms. In experiments of sonolysis, we optimized the rate of hydrogen production by changing the amount of water, adding ethanol and tuning the power of our piezoelectric transducer. Finally, we performed sonolysis and sonophotolysis experiments in the presence of S:Y_0.8Ga_0.2InO₃ finding a promising synergistic effect of UV-visible electromagnetic waves and 38 kHz ultrasound waves in producing H₂.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.