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Successful Immobilization of Lanthanides Doped TiO2 on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia

Rok: 2020

Druh publikace: článek v odborném periodiku

Název zdroje: Materials

Název nakladatele: MDPI

Místo vydání: BASEL

Strana od-do: "1254-1"-"1254-11"

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Úspěšná imobilizace Lantanidy dopovaného TiO2 v inertní pěně pro opakovanou produkci vodíku z vody	Popisujeme úspěšnou možnost imobilizace fotokatalyzátoru v pěně, což je významným benefitem z praktického úhlu pohledu.	amoniak; produkce vodíku; imobilizace; fotokatalyzátor; lantanidy; TiO2
eng	Successful Immobilization of Lanthanides Doped TiO2 on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia	We describe the successful possibility of the immobilization of a photocatalyst on foam, which is beneficial from a practical point of view. An immobilized photocatalyst is possible for use in a continuous experiment and can be easily separated from the reactor after the reaction concludes. Parent TiO2, La/TiO2, and Nd/TiO2 photocatalysts (containing 0.1 wt.% of lanthanide) were prepared by the sol-gel method and immobilized on Al2O3/SiO2 foam (VUKOPOR A) by the dip-coating method. The photocatalysts were investigated for the photocatalytic hydrogen generation from an aqueous ammonia solution under UVA light (365 nm). The evolution of hydrogen was compared with photolysis, which was limited to zero. The higher hydrogen generation was observed in the presence of 0.1 wt.% La/TiO2 than in 0.1 wt.% Nd/TiO2. This is, besides other things, related to the higher level of the conduction band, which was observed for 0.1 wt.% La/TiO2. The higher conduction band's position is more effective for hydrogen production from ammonia decomposition.	ammonia; hydrogen production; immobilized and powder photocatalyst; lanthanides; TiO2

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