ZNO-Ag/PS and ZnO/PS Films for Photocatalytic Degradation of Methylene Blue


Hassan Khuder Naji(1), Amjed Mirza Oda(2*), Wesam Abdulaljeleel(3), Hussein Abdilkadhim(4), Rawaa Hefdhi(5)

(1) Science Department, College of Basic Education, University of Babylon, Babylon 51002, Iraq
(2) Science Department, College of Basic Education, University of Babylon, Babylon 51002, Iraq
(3) Department of Chemistry, College of Sciences, University of Babylon, Babylon 51002, Iraq
(4) Department of Chemistry, College of Sciences, University of Babylon, Babylon 51002, Iraq
(5) Department of Chemistry, College of Sciences, University of Babylon, Babylon 51002, Iraq
(*) Corresponding Author


Two films of ZnO-Ag/polystyrene (ZnO-Ag/PS) and ZnO/polystyrene (ZnO/PS) have been prepared to evaluate the photodegradation ability of stabilized catalysts. The efficiency of ZnO improved against recombination of electron-hole pair by modification of catalyst surface with Ag photodeposition to be more resistant towards photocorrosion. ZnO-Ag catalyst was characterized by SEM and EDS analysis to show high roughness of this catalyst and Ag deposited on the surface was 2% (molar ratio). ZnO-Ag/PS and ZnO/PS composites were made as films and were then analyzed by FTIR spectra that showed the interaction of ZnO and ZnO-Ag with polystyrene appeared in the range of 400–620 cm–1, XRD pattern indicated the presence of Ag nanoparticles on the surface of ZnO and ZnO/PS film has maximum absorbance at 376 nm in UV-VIS spectra. This value shifted to 380 nm because of the photodeposition. The photocatalytic reaction was depicted using methylene blue (MB) in the UV-irradiation action of stacked films in MB solution. The result showed that both ZnO-Ag/PS and ZnO/PS films gave efficiency to remove MB by 97% and 70%, respectively. The reusability test of the films showed that ZnO-Ag/PS was more resistant than ZnO/PS. The presence of Ag also increased the efficiency in photodegradation and resistance against photocorrosion.


photocatalysis; photodeposition; ZnO-Ag; methylene blue

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[1] Sangpour, P., Hashemi, F., and Moshfegh, A.Z., 2010, Photoenhanced degradation of methylene blue on cosputtered M:TiO2 (M = Au, Ag, Cu) nanocomposite systems: A comparative study, J. Phys. Chem. C, 114 (33), 13955–13961.

[2] Li, D., Zhang, Y., Wu, W., and Pan, C., 2014, Preparation of a ZnO/TiO2 vertical-nanoneedle-on-film heterojunction and its photocatalytic properties, RSC Adv., 4 (35), 18186–18192.

[3] Teh, C.M., and Mohamed, A.R., 2011, Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: A review, J. Alloys Compd., 509 (5), 1648–1660.

[4] Josephine, G.S., and Sivasamy, A., 2014, Nanocrystalline ZnO doped on lanthanide oxide Dy2O3: A novel and UV light active photocatalyst for environmental remediation, Environ. Sci. Technol. Lett., 1 (2), 172–178.

[5] Zhao, H., Deng, W., and Li, Y., 2018, Atomic layer deposited TiO2 ultrathin layer on Ag_ZnO nanorods for stable and efficient photocatalytic degradation of RhB, Adv. Compos. Hybrid Mater., 1 (2), 404–413.

[6] Ahmed, S., Rasul, M.G., Martens, W.N., Brown, R., and Hashib, M.A., 2010, Heterogeneous photocatalytic degradation of phenols in wastewater: A review on current status and developments, Desalination, 261 (1-2), 3–18.

[7] Zheng, Y., Chen, C., Zhan, Y., Lin, X., Zheng, Q., Wei, K., and Zhu, J., 2008, Photocatalytic activity of Ag/ZnO heterostructure nanocatalyst: Correlation between structure and property, J. Phys. Chem. C, 112 (29), 10773–10777.

[8] Sapkota, A., Anceno, A.J., Baruah, S., Shipin, O.V., and Dutta, J., 2011, Zinc oxide nanorod mediated visible light photoinactivation of model microbes in water, Nanotechnololy, 22 (21), 215703.

[9] Khodja, A.A., Sehili, T., Pilichowski, J.F., and Boule, P., 2001, Photocatalytic degradation of 2-phenylphenol on TiO2 and ZnO in aqueous suspensions, J. Photochem. Photobiol., A, 141 (2-3), 231–239.

[10] Chakrabarti, S., Chaudhuri, B., Bhattacharjee, S., Das, P., and Dutta, B.K., 2008, Degradation mechanism and kinetic model for photocatalytic oxidation of PVC–ZnO composite film in presence of a sensitizing dye and UV radiation, J. Hazard. Mater., 154 (1-3), 230–236.

[11] Sridharan, K., Jang, E., Park, Y.M., and Park, T.J., 2015, Superior photostability and photocatalytic activity of ZnO nanoparticles coated with ultrathin TiO2 layers through atomic‐layer deposition, Chem. Eur. J., 21 (52), 19136–19141.

[12] Fan, Y., Han, D., Song, Z., Sun, Z., Dong, X., and Niu, L., 2017, Regulations of silver halide nanostructure and composites on photocatalysis, Adv. Compos. Hybrid Mater., 1 (2), 269–299.

[13] Pareek, V.K., and Adesina, A.A., 2004, Light intensity distribution in a photocatalytic reactor using finite volume, AlChE J., 50 (6), 1273–1288.

[14] Pouretedal, H.R., Norozi, A., Keshavarz, M.H., and Semnani, A., 2009, Nanoparticles of zinc sulfide doped with manganese, nickel and copper as nanophotocatalyst in the degradation of organic dyes, J. Hazard. Mater., 162 (2-3), 674–681.

[15] Rauf, M.A., Meetani, M.A., Khaleel, A., and Ahmed, A., 2010, Photocatalytic degradation of methylene blue using a mixed catalyst and product analysis by LC/MS, Chem. Eng. J., 157 (2-3), 373–378.

[16] Oda, A.M., Ferhod, A.S., and Lafta, A.J., 2014, Modification of the photocatalytic activity of zinc oxide by doping silver, IJSR, 3 (11), 2133–2139.

[17] Oda, A.M., Ali, H.H., Lafta, A.J., Esmael, H.A., Jameel, A.A., Mohammed, A.M., and Mubarak, I.J., 2015, Study self-cleaning of Congo red from cotton fabric loaded by ZnO-Ag, Int. J. Chem., 7 (2), 39–48.‏

[18] Oda, A.M., Khuder, H., Hashim, R., Rasheed, A., Hasan, A.A., Hazim, H., and Raheem, Z., 2016, Photocatalytic degradation of safranin O by ZnO-Ag loaded on cotton fabric, Res. J. Pharm. Biol. Chem. Sci., 7 (5), 2915–2924.

[19] Singh, S., Singh, P.K., and Mahalingam, H., 2014, Novel floating Ag+-doped TiO2/polystyrene photocatalysts for the treatment of dye wastewater, Ind. Eng. Chem. Res., 53 (42), 16332–16340.

[20] Zandsalimi, Y., Teymouri, P., Soltani, R.D.C., Rezaee, R., Abdullahi, N., and Safari, M., 2015, Photocatalytic removal of Acid Red 88 dye using zinc oxide nanoparticles fixed on glass plates, J. Adv. Environ. Health Res., 3 (2), 102–110.

[21] Di Mauro, A., Cantarella, M., Nicotra, G., Pellegrino, G., Gulino, A., Brundo, M.V., Privitera, V., and Impellizzeri, G., 2017, Novel synthesis of ZnO/PMMA nanocomposites for photocatalytic applications, Sci. Rep., 7, 40895.

[22] Kunarti, E.S., Kartini, I., Syoufian, A., and Widyandari, K.M., 2018, Synthesis and photoactivity of Fe3O4/TiO2-Co as a magnetically separable visible light responsive photocatalyst, Indones. J. Chem., 18 (3), 403–410.

[23] Chae, D.W., and Kim, B.C., 2005, Characterization on polystyrene/zinc oxide nanocomposites prepared from solution mixing, Polym. Adv. Technol., 16 (11‐12), 846–850.

[24] Kaniappan, K., and Latha, S., 2011, Certain investigations on the formulation and characterization of polystyrene/poly(methyl methacrylate) blends, Int. J. ChemTech Res., 3 (2), 708–717.

[25] Sangawar, V.S., and Golchha, M.C., 2013, Evolution of the optical properties of polystyrene thin films filled with zinc oxide nanoparticles, Int. J. Sci. Eng. Res., 4 (6), 2700–2705.

[26] Zhou, X.D., Xiao, X.H., Xu, J.X., Cai, G.X., Ren, F., and Jiang, C.Z., 2011, Mechanism of the enhancement and quenching of ZnO photoluminescence by ZnO-Ag coupling, Europhys. Lett., 93 (5), 57009.

[27] Aazam E.S., 2014, Visible light photocatalytic degradation of thiophene using Ag–TiO2/multi-walled carbon nanotubes nanocomposite, Ceram. Int., 40 (5), 6705–6711.

[28] Ren, C., Yang, B., Wu, M., Xu, J., Fu, Z., lv, Y., Guo, T., Zhao, Y., and Zhu, C., 2010, Synthesis of Ag/ZnO nanorods array with enhanced photocatalytic performance, J. Hazard. Mater., 182 (1-3), 123–129.

[29] Subash, B., Krishnakumar, B., Swaminathan, M., and Shanthi, M., 2013, Highly efficient, solar active, and reusable photocatalyst: Zr-loaded Ag–ZnO for reactive red 120 dye degradation with synergistic effect and dye-sensitized mechanism, Langmuir, 29 (3), 939–949.

[30] Fageria, P., Gangopadhyay, S., and Pande, S., 2014, Synthesis of ZnO/Au and ZnO/Ag nanoparticles and their photocatalytic application using UV and visible light, RSC Adv., 4 (48), 24962–24972.

[31] Saravanan, R., Khan, M.M., Gupta, V.K., Mosquera, E., Gracia, F., Narayanan, V., and Stephen, A., 2015, ZnO/Ag/Mn2O3 nanocomposite for visible light-induced industrial textile effluent degradation, uric acid and ascorbic acid sensing and antimicrobial activity, RSC Adv., 5 (44), 34645–34651.

[32] Byrappa, K., Subramani, A.K., Ananda, S., Rai, K.M.L., Dinesh, R., and Yoshimura, M., 2006, Photocatalytic degradation of rhodamine B dye using hydrothermally synthesized ZnO, Bull. Mater. Sci., 29 (5), 433–438.

[33] Patchaiyappan, A., Saran, S., and Devipriya, S.P., 2016, Recovery and reuse of TiO2 photocatalyst from aqueous suspension using plant based coagulant-A green approach, Korean J. Chem. Eng., 33 (7), 2107–2113.

[34] Krishnakumar, B., Subash, B., and Swaminathan, M., 2012, AgBr–ZnO–An efficient nano-photocatalyst for the mineralization of acid black 1 with UV light, Sep. Purif. Technol., 85, 35–44.

[35] Saravanan, R., Khan, M.M., Gupta, V.K., Mosquera, E., Gracia, F., Narayanan, V., and Stephen, A., 2015, ZnO/Ag/CdO nanocomposite for visible light-induced photocatalytic degradation of industrial textile effluents, J. Colloid Interface Sci., 452, 126–133.

DOI: https://doi.org/10.22146/ijc.41347

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