Visible Light Antibacterial Activity of TiO2-Ag Prepared from Radiophotography Wastewater

Document Type : Research Article

Authors

Chemistry Department Faculty of Mathematics and Natural Sciences Universitas Gadjah Mada, Sekip Utara POB 21 BLs Yogyakarta, INDONESIA

10.30492/ijcce.2020.38101

Abstract

This paper deals with the study on the antibacterial activity of TiO2-doped Ag prepared from radiophotography wastewater. The antibacterial agent was prepared by reduction of Ag(I) in the radiophotography wastewater over TiO2 photocatalyst under UV light irradiation and characterized by EDS, XRD, SRUV, and TEM machines. The antibacterial activity in inhibiting the growth of Staphylococcus aureus was examined by counting the number of viable bacterial colonies using the TPC method. The result shows that Ag doping on TiO2 as TiO2-Ag can shift its absorption into the visible region. TiO2-Ag assigns better antibacterial activity compared to TiO2 under visible light irradiation. The efficiency of the antibacterial activity is found to be influenced by Ag loaded in the TiO2, irradiation time, and the antibacterial agent dose. The highest antibacterial activity is achieved by 100 mg/L of TiO2-Ag (2) under 3 h irradiation by visible light.

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[1] Lubbers J.R., Chauhan S., Bianchine J.R., Controlled Clinical Evaluations of Chlorine Dioxide, Chlorite and Chlorate in Man, Toxicol. Sci., 1(4): 334-338 (1981).
[2] Stübinger S., Sader R., Filippi A., The Use of Ozone in Dentistry and Maxillofacial Surgery: A Review. Quintessence Int., 37(5):353–359 (2006).
[3] Fujishima A., Rao T.N., Tryk D.A., Titanium Dioxide Photocatalysis, J. Photochem. Photobiol. C Photochem. Rev, 1(1): 1–21 (2000).
[6] Silvestry-Rodriguez N., Sicairos-Ruelas E.E., Gerba C.P., Bright K.R., Silver as a Disinfectant, Rev. Environ. Contam. Toxicol., 191:23-45 (2007).
[7] Li Y., Ma M., Chen W., Li L., Zen M., Preparation of Ag-doped TiO2 Nanoparticles by a Miniemulsion Method and Their Photoactivity in Visible Light Illuminations, Mater. Chem. Phys., 129(1–2): 501–505 (2011).
[8] Chong M.N., Jin B., Chow C.W.K., Saint C., Recent Developments in Photocatalytic Water Treatment Technology: A Review, Water Res., 44(10): 2997-3027 (2010).
[9] Wahyuni E.T., Roto R., Prameswari M., Antibacterial Activity of TiO2-Ag-Nanoparticle under Visible Light, Mater. Sci. Forum., 948:33-42 (2019).
[10] Songkroah C., Nakbanpote W., Thiravetyan P., Recovery of Silver-thiosulphate Complexes with Chitin. Process Biochem., 39(11):1553-1559 (2004).
[11] Naik K., Chatterjee A., Prakash H., Kowshik M., Mesoporous TiO2 Nanoparticles Containing Ag Ion with Excellent Antimicrobial Activity at Remarkable Low Silver Concentrations, J. Biomed. Nanotechnol., 9(4): 664-673 (2013).
[12] Tahir K., Ahmad A., Li B., Nazir S., Khan A.U., Nasir T., Khan Z.U.H., Naz R., Raza M.,  Visible Light Photo Catalytic Inactivation of Bacteria and Photo Degradation of Methylene Blue with Ag/TiO2 Nanocomposite Prepared by a Novel Method,
J. Photochem. Photobiol. B Biol., 162:189-98 (2016)
[13] Chan S.C., Barteau M.A., Preparation of Highly Uniform Ag/TiO2 and Au/TiO2 Supported Nanoparticle Catalysts by Photodeposition, Langmuir, 21(12): 5588–5595 (2005).
[14] Ko S., Banerjee C.K., Sankar J., Photochemical Synthesis and Photocatalytic Activity in Simulated Solar Light of Nanosized Ag Doped TiO2 Nanoparticle Composite, Compos. Part B Eng., 42(3): 579–583 (2011).
[15] Wahyuni E.T., Roto R., Novarita D., Suwondo K.P., Kuswandi B., Preparation of TiO2/AgNPs by Photodeposition Method Using Ag(I) Present in Radiophotography Wastewater and Their Antibacterial Activity in Visible Light Illumination, J. Environ. Chem. Eng., 7(4): 103178 (2019).
[16] Sobana N., Selvam K., Swaminathan M., Optimization of Photocatalytic Degradation Conditions of Direct Red 23 Using Nano-Ag Doped TiO2, Sep. Purif. Technol., 62(3): 648–653 (2008).
[17] Li H., Cui Q., Feng B., Wang J., Lu X., Weng J., Antibacterial Activity of TiO2 Nanotubes: Influence of Crystal Phase, Morphology and Ag Deposition, Appl. Surf. Sci., 284: 179-183 (2013).