Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> 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 T...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-03-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/13/5/1254 |
| _version_ | 1811205083074920448 |
|---|---|
| author | Miroslava Edelmannová Martin Reli Lenka Matějová Ivana Troppová Lada Dubnová Libor Čapek Dana Dvoranová Piotr Kuśtrowski Kamila Kočí |
| author_facet | Miroslava Edelmannová Martin Reli Lenka Matějová Ivana Troppová Lada Dubnová Libor Čapek Dana Dvoranová Piotr Kuśtrowski Kamila Kočí |
| author_sort | Miroslava Edelmannová |
| collection | DOAJ |
| description | 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<sub>2</sub>, La/TiO<sub>2</sub>, and Nd/TiO<sub>2</sub> photocatalysts (containing 0.1 wt.% of lanthanide) were prepared by the sol-gel method and immobilized on Al<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub> 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<sub>2</sub> than in 0.1 wt.% Nd/TiO<sub>2</sub>. This is, besides other things, related to the higher level of the conduction band, which was observed for 0.1 wt.% La/TiO<sub>2</sub>. The higher conduction band’s position is more effective for hydrogen production from ammonia decomposition. |
| first_indexed | 2024-04-12T03:24:37Z |
| format | Article |
| id | doaj.art-0296747128874c1f86b3653bfd78266b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T03:24:37Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0296747128874c1f86b3653bfd78266b2022-12-22T03:49:44ZengMDPI AGMaterials1996-19442020-03-01135125410.3390/ma13051254ma13051254Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous AmmoniaMiroslava Edelmannová0Martin Reli1Lenka Matějová2Ivana Troppová3Lada Dubnová4Libor Čapek5Dana Dvoranová6Piotr Kuśtrowski7Kamila Kočí8Institute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava-Poruba, Czech RepublicInstitute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava-Poruba, Czech RepublicInstitute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava-Poruba, Czech RepublicInstitute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava-Poruba, Czech RepublicFaculty of Chemical Technology, University of Pardubice, 573 Studentská, Pardubice, Czech RepublicFaculty of Chemical Technology, University of Pardubice, 573 Studentská, Pardubice, Czech RepublicInstitute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37 Bratislava, SlovakiaFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, PolandInstitute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava-Poruba, Czech RepublicWe 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<sub>2</sub>, La/TiO<sub>2</sub>, and Nd/TiO<sub>2</sub> photocatalysts (containing 0.1 wt.% of lanthanide) were prepared by the sol-gel method and immobilized on Al<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub> 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<sub>2</sub> than in 0.1 wt.% Nd/TiO<sub>2</sub>. This is, besides other things, related to the higher level of the conduction band, which was observed for 0.1 wt.% La/TiO<sub>2</sub>. The higher conduction band’s position is more effective for hydrogen production from ammonia decomposition.https://www.mdpi.com/1996-1944/13/5/1254ammoniahydrogen productionimmobilized and powder photocatalystlanthanidestio<sub>2</sub> |
| spellingShingle | Miroslava Edelmannová Martin Reli Lenka Matějová Ivana Troppová Lada Dubnová Libor Čapek Dana Dvoranová Piotr Kuśtrowski Kamila Kočí Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia Materials ammonia hydrogen production immobilized and powder photocatalyst lanthanides tio<sub>2</sub> |
| title | Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia |
| title_full | Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia |
| title_fullStr | Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia |
| title_full_unstemmed | Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia |
| title_short | Successful Immobilization of Lanthanides Doped TiO<sub>2</sub> on Inert Foam for Repeatable Hydrogen Generation from Aqueous Ammonia |
| title_sort | successful immobilization of lanthanides doped tio sub 2 sub on inert foam for repeatable hydrogen generation from aqueous ammonia |
| topic | ammonia hydrogen production immobilized and powder photocatalyst lanthanides tio<sub>2</sub> |
| url | https://www.mdpi.com/1996-1944/13/5/1254 |
| work_keys_str_mv | AT miroslavaedelmannova successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT martinreli successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT lenkamatejova successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT ivanatroppova successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT ladadubnova successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT liborcapek successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT danadvoranova successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT piotrkustrowski successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia AT kamilakoci successfulimmobilizationoflanthanidesdopedtiosub2suboninertfoamforrepeatablehydrogengenerationfromaqueousammonia |