Photocatalytic hydrogen generation over alkali niobates in the presence of organic compounds

• Authors: Beata Zielińska , Joanna Sreńscek-Nazzal , Ryszard Kaleńczuk
• Languages of publication: EN

Abstracts

EN

The photocatalytic efficiency of alkali niobate-based compounds (Li, Na, K) for hydrogen generation has been investigated. The systematic study showed that the highest photocatalytic activity was observed in the case of Na/Nb2O5 catalyst which contained sodium niobate (NaNbO3) phase and that the most efficient electron donor for hydrogen generation was formic acid. In addition, the effect of organic donor (HCOOH) concentration on the amount of the evolved hydrogen was studied.

Keywords

EN

Hydrogen generation; alkali niobates; photocatalysis

• Journal: Polish Journal of Chemical Technology
• Year: 2008
• Volume: 10
• Issue: 4
• Pages: 1-3

Dates

published

1 - 1 - 2008

online

7 - 1 - 2009

Contributors

author

Beata Zielińska

• Institute of Chemical and Environment Engineering, Szczecin University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

Joanna Sreńscek-Nazzal

• Institute of Chemical and Environment Engineering, Szczecin University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

author

Ryszard Kaleńczuk

• Institute of Chemical and Environment Engineering, Szczecin University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

References

• Shon, H. K., Vigneswaran, S., Ngo, H. H., Kim, J.-H. & Kandasamy, J. (2007). Effect of flocculation as a pretreatment to photocatalysis in the removal of organic matter from wastewater. Sep. Purif. Technol. 56, 388-391. DOI: 10.1016/j.seppur.2007.04.023.[WoS][Crossref]
• Selli, E., Bianchi, C. L., Pirola, C., Cappelletti G. & Ragaini, V. (2008). Efficiency of 1,4-dichlorobenzene degradation in water under photolysis, photocatalysis on TiO2 and sonolysis. J. Hazard. Mater. 153, 1136-1141. DOI: 10.1016/j.jhazmat.2007.09.071.[Crossref][WoS]
• Ji, S. M., Jun, H., Jang, J. S., Son, H. Ch., Borse, P. H. & Lee, J. S. (2007). Photocatalytic hydrogen production from natural seawater. J. Photochem. Photobiol. A. 189, 141-144. DOI: 10.1016/j.jphotochem.2007.01.011.[WoS][Crossref]
• Ikeda, M., Kusumoto, Y., Somekawa, S., Ngweniform, P. & Ahmmad, B. (2006). Effect of graphite silica on TiO2 photocatalysis in hydrogen production from water-methanol solution. J. Photochem. Photobiol. A. 184, 306-312. DOI: 10.1016/j.jphotochem.2006.04.031.[Crossref]
• Liu, Y., Guo, L., Yan, W., Liu, H., Liu, Y., Guoa, L., Yan, W. & Liu, H. (2006). A composite visible-light photocatalyst for hydrogen production. J. Power Sources. 159, 1300-1304. DOI: 10.1016/j.jpowsour.2005.11.105.[Crossref]
• Li, Y., Lu, G. & Li, S. (2003). Photocatalytic production of hydrogen in single component and mixture systems of electron donors and monitoring adsorption of donors by in situ infrared spectroscopy. Chemosphere. 52, 843-850. DOI: 10.1016/S0045-6535(03)00297-2.[Crossref]
• Li, Y., Xie, Y., Peng, S., Lu, G. & Li, S. (2006). Photocatalytic hydrogen generation in the presence of chloroacetic acids over Pt/TiO2. Chemosphere. 63, 1312-1318. DOI: 10.1016/j.chemosphere.2005.09.004.[Crossref]
• Li, Y., Lu, G. & Li, S. (2001). Photocatalytic hydrogen generation and decomposition of oxalic acid over platinized TiO2. Appl. Catal. A. 214, 179-185.
• Kato, H. & Kudo, A. (1998). New tantalate photocatalysts for water decomposition into H2 and O2. Chem. Phys. Lett. 295, 487-492.
• Zielińska, B., Arabczyk, A. & Kaleńczuk R. J. (2007). Preparation of Nb2O5 photocatalysts by alkali metals (Li, Na, K) and its photocatalytic performance. Polish J. Chem. 81, 1355-1362.
• Zielińska, B., Borowiak-Palen, E. & Kalenczuk, R. J. (2008). Photocatalytic hydrogen generation over alkaline-earth titanates in the presence of electron donors. International J. Hydrogen Energy. 33, 1797-1802. DOI: 10.1016/j.ijhydene.2008.02.00.1[Crossref][WoS]
• Zielińska, B., Borowiak-Palen, E. & Kalenczuk, R. J. (2008). Preparation and characterization of lithium niobate as a novel photocatalyst in hydrogen generation. J. Phys. Chem. Solid. 69, 236-242. DOI: 10.1016/j.jpcs.2007.09.001.[Crossref][WoS]
• Gondal, M. A., Hameed, A. & Yamani, Z. H. (2004). Hydrogen generation by laser transformation of methanol using n-type WO3 semiconductor catalyst. J. Mol. Catal. A. 222, 259-264. DOI: 10.1016/j.molcata.2004.08.022.[Crossref]

Identifiers

DOI

10.2478/v10026-008-0036-0