The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Photocatalytic Activity of Titanium Dioxide Modified by Silver Nanoparticles
Abstract
Photocatalytic activity of Ag/TiO(2) composites obtained by photoreduction treatment (PRT) was investigated. The composite materials, containing various ratio of silver nanoparticles (0.6-3.7 wt %) were obtained by depositing silver on the Evonic-Degussa P25 titania surface. Selected samples whose color varied between light rose and purple brown were examined by SEM, TEM, XPS, DRS, and BET techniques. Flat band potential was determined using Roy method. TEM analysis showed spherically shaped silver nanoparticles of the diameter 4-12 nm. The XPS measurements revealed that silver particles were obtained mainly in metallic form. DRS spectra and photovoltage measurements showed that silver nanoparticles modified the P25 spectral properties but they changed neither the band gap nor the location of flat band potential. The photocatalytic activity of Ag/P25 composite was compared to the photocatalytic activity of pure P25 in the photooxidation reaction of an important potable water contaminant humic acid (HA) and two model compounds, oxalic acid (OxA) and formic acid (FA). The photodecomposition reaction was investigated in a batch reactor containing aqueous suspension of a photocatalyst illuminated by either UV or artificial sunlight (halogen lamp). The tests proved that a small amount of silver nanoparticles deposited on the titania surface triggers the increase in photocatalytic activity; this increase depends, however, on the decomposed substance.
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Cites
Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results
Linsebigler, A. L., Lu, G., & Yates, J. T. (1995) · Chemical Reviews · doi:10.1021/cr00035a013 · Cited by 11,575
Gas-phase ethanol photocatalytic degradation study with TiO2 doped with Fe, Pd and Cu
Araña, J., Doña-Rodrı́guez, J. M., González-Dı́az, O., Tello Rendón, E., Herrera Melián, J. A., Colón, G., Navı́o, J. A., & Pérez Peña, J. (2004) · Journal of Molecular Catalysis A: Chemical · doi:10.1016/j.molcata.2004.01.020 · Cited by 120
Cited by
Aggregation and Dissolution of Silver Nanoparticles in Natural Surface Water
Li, X., & Lenhart, J. J. (2012) · Environmental Science & Technology · doi:10.1021/es204531y · Cited by 295
Resano-Garcia, A., Champmartin, S., Battie, Y., Koch, A., En Naciri, A., Ambari, A., & Chaoui, N. (2016) · Physical Chemistry Chemical Physics · doi:10.1039/c6cp06511b · Cited by 20
Metadata
- Authors
- Wodka, D., Bielańska, E., Socha, R. P., Elżbieciak - Wodka, M., Gurgul, J., Nowak, P., Warszyński, P., & Kumakiri, I.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-06-22
- Volume
- 2
- Issue
- 7
- Pages
- 1945-1953
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2076679347
- Cited by
- 200
- References
- 2
- FWCI
- 6.23
- Type
- journal article
- Language
- en
- Open access
- closed
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