Abstract
The Ag/TiO2 materials synthesised by a pH-controlled photocatalytic process and triblock copolymer-induced reduction of the [Ag(NH3)2]+ ions under ambient light illumination appeared to be active and selective catalysts for the photocatalytic reduction of the nitrate ions in water. High efficiency of such Ag/TiO2 catalysts was attributed to the presence of both the highly dispersed silver nanoclusters on the surface of titania and the hetero-junctions in the TiO2 support. The influence of the structural features and the phase composition of the titania support on catalytic properties of the Ag/TiO2 materials is discussed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
F. Zhang, R. Jin, J. Chen, C. Shao, W. Gao, L. Li, N. Guan, High photocatalytic activity and selectivity for nitrogen in nitrate reduction on Ag/TiO2 catalyst with fine silver clusters, J. Catal. 232, 424-431(2005).
W. Gao, R. Jin, X. Guan, H. Zeng, F. Zhang, N. Guan, Titania-supported bimitallic catalysts for photocatalytic reduction of nitrate, Catal. Today 90, 331-336 (2004).
F. Zhang, N. Guan, Y. Li, X. Zhang, J. Chen, H. Zeng, Control of morphology of silver clusters coated on titanium dioxide during photocatalysis, Langmuir 19, 8230-8234 (2003).
K.I. Gnanasekar, V. Subramanian, J. Robinson, Direct conversion of TiO2 sol to nano-crystalline anatase at 85°C, J. Mater. Res. 17(6), 1507-1512 (2002).
A. Collins, D. Carriazo, S.A. Davis, S. Mann, Spontaneous template-free assembly of ordered macroporous titania, Chem. Commun. 568-569 (2004).
L. Zhang, J.C. Yu, H.Y. Yip, Q. Li, K.W. Kwong, A.-W. Xu, P.K. Wong, Ambient light reduction strategy to synthesize silver nanoparticles and silver-coated TiO2 with enhanced photocatalytic and bactericidal activities, Langmuir 19, 10372-10380 (2003).
L. Zhang, J.C. Yu, A simple approach to reactivate silver-coated titanium dioxide photo-catalyst, Catal. Commun. 6, 684-687 (2005).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer Science + Business Media B.V
About this paper
Cite this paper
Sychev, M., Lozovski, A., Prihod’ko, R., Erdmann, K., Goncharuk, V. (2008). Photoreduction of Nitrate Ions Over Ag/TiO2 System. In: Innocenzi, P., Zub, Y.L., Kessler, V.G. (eds) Sol-Gel Methods for Materials Processing. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8514-7_42
Download citation
DOI: https://doi.org/10.1007/978-1-4020-8514-7_42
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-8522-2
Online ISBN: 978-1-4020-8514-7
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)