Edelmannová Miroslava, Reli Martin, Matějová Lenka, Troppová Ivana, Dubnová Lada, Čapek Libor, Dvoranová Dana, Kuśtrowski Piotr, Kočí Kamila
Institute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava-Poruba, Czech Republic.
Faculty of Chemical Technology, University of Pardubice, 573 Studentská, Pardubice, Czech Republic.
Materials (Basel). 2020 Mar 10;13(5):1254. doi: 10.3390/ma13051254.
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 TiO, La/TiO, and Nd/TiO photocatalysts (containing 0.1 wt.% of lanthanide) were prepared by the sol-gel method and immobilized on AlO/SiO 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/TiO than in 0.1 wt.% Nd/TiO. This is, besides other things, related to the higher level of the conduction band, which was observed for 0.1 wt.% La/TiO. The higher conduction band's position is more effective for hydrogen production from ammonia decomposition.
我们描述了将光催化剂固定在泡沫上的成功可能性，从实际角度来看这是有益的。固定化光催化剂可用于连续实验，并且在反应结束后可轻松从反应器中分离出来。通过溶胶 - 凝胶法制备了母体TiO、La/TiO和Nd/TiO光催化剂（含有0.1 wt.%的镧系元素），并通过浸涂法将其固定在AlO/SiO泡沫（VUKOPOR A）上。研究了这些光催化剂在UVA光（365 nm）下从氨水溶液中光催化产氢的性能。将产氢情况与光解进行了比较，光解产氢量被限制为零。在存在0.1 wt.% La/TiO时观察到的产氢量高于0.1 wt.% Nd/TiO时的产氢量。除此之外，这与0.1 wt.% La/TiO所观察到的更高导带水平有关。更高的导带位置对于氨分解产氢更有效。
