Abstract
This review paper focuses on perovskite-type materials as (photo)catalysts for energy and environmental applications. After a short introduction and the description of the structure of inorganic and hybrid organic-inorganic perovskites, the methods of preparation of inorganic perovskites both as powders via chemical routes and as thin films via laser-based techniques are tackled with, for the first, an analysis of the influence of the preparation method on the specific surface area of the material obtained. Then, the (photo)catalytic applications of the perovskites in energy production either in the form of hydrogen via water photodecomposition or by methane combustion, and in the removal of organic pollutants from waste waters, are reviewed.
Highlights
The 21st century has brought new challenges to scientists in solving the issues generated, on the one hand, by the increased demand for energy and, on the other hand, by the more stringent exigencies in environmental protection
Researchers have been focused on developing new catalysts and to perfect the existing ones in order to enhance the sustainability of energy-generating processes
These oxide materials are very active, highly thermally stable and present low volatility. They were considered as potential candidates to replace the expensive oxide-supported noble metals which are currently the combustion catalysts used on a large scale
Summary
The 21st century has brought new challenges to scientists in solving the issues generated, on the one hand, by the increased demand for energy and, on the other hand, by the more stringent exigencies in environmental protection. Complex oxides having an ABO3 perovskite-type structure are possible candidates for catalytic combustion, their potential as oxidation catalysts being studied for the first time approximately 50 years ago [1,2]. These oxide materials are very active, highly thermally stable and present low volatility. Perovskite materials show excellent properties for several applications, such as: dielectric, piezoelectric, semiconductors, electro-optic or superconductors [13] Their utilisation as catalysts for energy production and environmental protection is detailed in Section 5 of this review
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