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SHI irradiation induced modifications of plasmonic properties of Ag-TiO2 thin film and study using FDTD simulation


Modifications in morphological and plasmonic properties of heavily doped Ag-TiO2 nanocomposite thin films by ion irradiation have been observed. The Ag-TiO2 nanocomposite thin films were synthesized by RF co-sputtering and irradiated by 90 MeV Ni ions with different fluences. The modifications in morphological, structural and plasmonic properties of the nanocomposite thin films caused by ion irradiation were studied by transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-Vis absorption spectroscopy. The thickness of the film and concentration of Ag were assessed by Rutheford backscattering (RBS) as ~50 nm and 56 at.%, respectively. Interestingly, localized surface plasmon resonance (LSPR) appeared at 566 nm in the thin film irradiated at the fluence of 1 × 1013 ions/cm2. This plasmonic behavior can be attributed to the increment in interparticle separation. Increased interparticle separation diminishes the plasmonic coupling between the nanoparticles and the LSPR appears in the visible region. The distribution of Ag nanoparticles obtained from HR-TEM images has been used to simulate absorption spectra and electric field distribution along Ag nanoparticles with the help of FDTD (Finite Difference Time Domain). Further, the ion irradiation results (experimental as well simulated) were compared with the annealed nanocomposite thin film and it was found that optical properties of heavily doped metal in the metal oxide matrix can be more improved by ion irradiation in comparison with thermal annealing.

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Application of low-level laser radiation with TiO2, Ag/TiO2 and S/TiO2 on Streptococcus salivarius isolated from the oral cavity


In our research, we determine the effect of low-level laser irradiation with nanoparticles on Streptococcus salivarius. Photodynamic killing of periodontopathogenic bacteria may be an alternative to the systemic application of antibacterial drugs used in the treatment of periodontal diseases. The application of photosensitizing nanoparticles and their excitation by visible light of blue spectra enables effective killing of periodontopathogens. This data combined with the results demonstrates that TiO2, AgTiO2 and S/TiO2 can inhibit the proliferation of Streptococcus salivarius due to its high photocatalytic activity, which irreversibly damages the cell walls and membranes.

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Synthesis, characterization of Hollandite Ag2Mn8O16 on TiO2 nanotubes and their photocatalytic properties for Rhodamine B degradation

, 262–266. DOI: 10.1016/j.surfcoat.2016.06.033. 23. Hussain, M., Tariq, S., Ahmad, M., Sun, H., Maaz, K., Ali, G., Hussain, S.Z., Iqbal, M., Karim, S. & Nisar, A. (2016). Ag TiO 2 nanocomposite for environmental and sensing applications. Materials Chemistry & Physics. 181, 194–203. DOI: 10.1016/j.matchemphys.2016.06.049. 24. Kim, J.H., Kim, D.H., Kim, S.K., Bae, D., Yoo, Y.Z. & Seong, T.Y. (2016). Control of refractive index by annealing to achieve high figure of merit for TiO 2 /Ag/TiO 2 multilayer films. Ceram. Int. 42(12), 14071–14076. DOI: 10.1016/j

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Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts

-011-0042-5. Li, X., Wang, L. & Lu, X. (2010). Preparation of silver-modified LiO 2 via microwave-assisted method and its photocatalytic activity for toluene degradation. J. Hazard. Mater. 177, 639-647. DOI: 10.1016/j.jhazmat.2009.12.080. Chan, S. & Barteau, M. (2005). Preparation of Highly Uniform Ag/TiO 2 and Au/TiO 2 Supported Nanoparticle Catalysts by Photodeposition. Langmuir. 21(12), 5588-5595. DOI: 10.1021/la046887k. Hou, L. R., Yuan, C. Z. & Peng, Y. (2007). Synthesis and photocatalytic property of SnO 2 /TiO 2

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Combination of mesoporous titanium dioxide with MoS2 nanosheets for high photocatalytic activity

., Bergfeldt, T., Bockstaller, P. & Fruk, L. (2014). Enhanced photocatalytic activity of Au/TiO 2 nanocomposite prepared using bifunctional bridging linker. Adv. Funct. Mater. 24(7), 907–915. DOI: 10.1002/adfm.201301484. 20. Lu, Q., Lu, Z., Lu, Y., Lv, L., Ning, Y., Yu, H., Hou, Y. & Yin, Y. (2013). Photocatalytic synthesis and photovoltaic application of Ag-TiO 2 nanorod composites. Nano Lett. 13(11), 5698–5702. DOI: 10.1021/nl403430x. 21. Yang, D., Sun, Y., Tong, Z., Tian, Y., Li, Y. & Jiang, Z. (2015). Synthesis of Ag/TiO 2 nanotube heterojunction with

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Enhanced Photocatalytic Properties of Ag-Loaded N-Doped Tio2 Nanotube Arrays

characterization of substitutional and interstitial nitrogen-doped titanium dioxides with visible light photocatalytic activity. J. Solid. State Chem., 181, 130-136. [23] Antony R. P., Mathews T., Panda K. (2012). Enhanced Field Emission Properties of Electrochemically Synthesized Self-Aligned Nitrogen-Doped TiO2 Nanotube Array Thin Films. J. Phys. Chem. C, 116(31):16740-16746. [24] Yu J. G., Xiong J. F., Cheng B., Liu S. (2005). Fabrication and characterization of Ag-TiO2 multiphase nanocomposite thin films with enhanced photocatalytic activity. Appl. Catal. B

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PANI/NaTaO3 composite photocatalyst for enhanced hydrogen generation under UV light irradiation

. Rep. 5, 13593–1396. DOI: 10.1038/srep13593. 27. Ansari, M.O., Khan, M.M., Ansari, S.A., Lee, J. & Cho, M.H. (2014). Enhanced thermoelectric behavior and visible light activity of Ag@TiO 2 /polyaniline nanocomposite synthesized by biogenic-chemical route. RSC Adv. 4, 23713–23719. DOI: 10.1039/c4ra02602k. 28. Xing, Z., Chen, Z., Zong, X. & Wang, L. (2014). A new type of carbon nitride-based polymer composite for enhanced photocatalytic hydrogen production. Chem. Commun. 50, 6762–6764. DOI: 10.1039/c4cc00397g. 29. Kato, H. & Kudo, A. (2001

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Impact of paint matrix composition and thickness of paint layer on the activity of photocatalytic paints

. 23. Hao, D., Yang, Z., Jiang, C. & Zhang, J. (2014). Synergistic photocatalytic effect of TiO2 coatings and p-type semiconductive SiC foam supports for degradation of organic contaminant. Appl. Catal. B. 144, 196-202. DOI: 10.1016/j. apcatb.2013.07.016. 24. Malagutti, A., Mourão, H., Garbin, J. & Ribeiro, C. (2009). Deposition of TiO2 and Ag:TiO2 thin fi lms by the polymeric precursor method and their application in the photodegradation of textile dyes. Appl. Catal. B. 90, 205-212. DOI: 10.1016/j. apcatb.2009.03.014. 25. Kumar, K

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Preliminary studies of photocatalytic activity of gypsum plasters containing TiO2 co-modified with nitrogen and carbon

. Janus, M., Bubacz, K., Zatorska. J., Kusiak-Nejman, E., Czyżewski, A., Przepiórski, J. & Morawski, A.W. (2014). Induced self-cleaning properties towards Reactive Red 198 of the cement materials loaded with co-modified TiO 2 /N,C photocatalysts. Reac. Kinet. Mech. Cat. DOI: 10.1007/s11144-014-0749-4. 51. Liu, Y., Liu, C.Y., Wei, J.H., Xiong, R., Pan, C.X. & Shi, J. (2010). Enhanced adsorption and visible-light-induced photocatalytic activity of hydroxyapatite modified Ag-TiO2 powders. Appl. Surf. Sci. 256(21), 6390-6394. DOI: 10.1016/j. apsusc.2010

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Silver and Zinc Nanoparticles in Animal Nutrition – A Review

oral gavage administration for 13 weeks. Toxicol. Sci., 150: 131–160. Buzea C., Pacheco I.I., Robbie K. (2007). Nanomaterials and nanoparticles: Sources and toxicity. Biointerphases, 2: MR17–MR71. Chen H., Zhao R., Wang B., Cai C., Zheng L., Wang H., Wang M., Ouyang H., Zou X., Chai Z., Zhao Y., Feng W. (2017). The effects of orally administered Ag, TiO 2 and SiO 2 nanoparticles on gut microbiota composition and colitis induction in mice. NanoImpact, 8: 80–88. Chen Y., Chen H., Shi J. (2013). In vivo bio-safety evaluations and diagnostic

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