X-Shaped Thallium oxide nanostructures as a high performance photocatalyst for degradation of Cephalexin

Authors

1 Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran

2 Department of Chemistry, K. N. Toosi University of Technology, Tehran, Iran

Abstract

In this study, we present an approach to synthesize Tl2O3 nanoparticles using a simple co-precipitation method that leads to the formation of X-shaped particles. The sample was characterized by XRD measurements, field emission scanning electron microscopy (FESEM), diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR), and ultraviolet-visible (UV-VIS). The absorption spectrum of the sample showed that the optical band gap was 3.5 eV. The prepared photocatalyst was used in the photocatalytic degradation of Cephalexin (CPX) using irradiation, and the optimum parameters that were obtained were 0.2 g.L-1 of the photocatalyst at pH 5.5 and an irradiation time of 15 minutes. 

Graphical Abstract

X-Shaped Thallium oxide nanostructures as a high performance photocatalyst for degradation of Cephalexin

Highlights

  • Thallium oxide nanopartilces were synthesized by a simple co-precipitation method and used as degradartion photocatalyst.
  • The diffraction pattern and FESEM of the prepared Tl2O3 nanoparticles showed the X-shaped morphology.
  • Cephalexin (CPX) has been degradated upto 97% after 15 min in the presence of Tl2Ophotocatalyst.

Keywords


[1] M. Klavarioti, D. Mantzavinos, D. Kassinos, Removal of residual pharmaceuticals from aqueous systems by advanced oxidation processes, Environ. Int. 35 (2009) 402-417.
[2] Q.P. Isariebel, J. Carine, Sonolysis of levodopa and paracetamol in aqueous solutions, Ultrason. Sonochem. 16 (2009) 610-615.
[3] M.N. Amin, J.L. Zilles, J. Greiner, S. Charbonneau, L. Raskin, E. Morgenroth, Influence of the antibiotic erythromycin on anaerobic treatment of a pharmaceutical wastewater, Environ. Sci. Technol. 40 (2006) 3971-3977.
[4] K. Choi, S.G. Kim, S.H. Kim, Removal of tetracycline and sulfonamide classes of antibiotic compound by powdered activated carbon, Environ. Technol. 29 (2008) 333-342.
[5] G. Ciric-Marjanovic, Recent advances in polyaniline research: Polymerization mechanisms, structural aspects, properties and applications, Synthetic Met. 177 (2013) 1-47.
[6] I.E. Wachs, G. Deo, M.A. Vuurman, H. Hu, D.S. Kim, J-M. Jehng, Molecular design of supported metal oxide catalysts: An initial step to theoretical models, J. Mol. Catal. 82 (1993) 443-455.
[7] M.A. Vuurman, A. Oskam, D.J. Stufkens, I.E. Wachs, Structural determination of surface rhenium oxide on various oxide supports (Al2O3, ZrO2, TiO2 and SiO2), J. Mol. Catal. 76 (1992) 263-285.
[8] S. Avivi, Y. Mastai, A. Gedanken, A new fullerene-like inorganic compound fabricated by the sonolysis of an qqueous solution of TlCl3, J. Am. Chem. Soc. 122 (2000) 4331-4334.
[9] G.E. McGuire, G.K. Schweitzer, T.A. Carlson, Core electron binding energies in some Group IIIA, VB, and VIB compounds, Inorg. Chem. 12 (1973) 2450-2453.

[10] H.M. Kothari, A.A. Vertegel, E.W. Bohannan, J.A. Switzer, Epitaxial electrodeposition of Pb-Tl-O superlattices on single-crystal Au(100), Chem. Mater. 14 (2002) 2750-2756.
[11] I.G. Casella, M. Gatta, Electrodeposition and characterization of nickel-copper alloy films as electrode material in alkaline media, J. Electrochem. Soc. 149 (2002) B465.
[12] I.G. Casella, M.R. Guascito, M.G. Sannazzaro, Voltammetric and XPS investigations of nickel hydroxide electrochemically dispersed on gold surface electrodes, J. Electroanal. Chem. 462 (1999) 202-210.
[13] E.D. Rosa, S. Sepúlveda- Guzman, B. Reeja-Jayan, A. Torres, P. Salas, N. Elizondo, M.J.J. Yacaman, Controlling the growth and luminescence properties of well-faceted ZnO nanorods, Phys. Chem. C, 111 (2007) 8489-8495.
[14] R.J. Phillips, M.J. Shane, J.A. Switzer, Electrochemical and photoelectrochemical deposition of thallium (III) oxide thin films, J. Mater. Res. 4 (1989) 923-929.
[15] L. Gnanasekaran, R. Hemamalini, K. Ravichandran, Synthesis and characterization of TiO2 quantum dots for photocatalytic application, J. Saudi Chem. Soc. 19 (2015) 589-594.
[16] L. Gnanasekaran, R. Hemamalini, R. Saravanan, K. Ravichandran, F. Gracia, V.K. Gupta, Intermediate state created by dopant ions (Mn, Co and Zr) into TiO2 nanoparticles for degradation of dyes under visible light, J. Mol. Liq. 223 (2016) 652-659.
[17] X. Yong, A.A. Martin Schoonen, The absolute energy positions of conduction and valence bands of selected semiconducting minerals, Am. Mineral. 85 (2000) 543-556.
[18] E.H. Wiseman, E.C. Schreiber, R. Pinson Jr., The distribution, excretion and metabolism of benzquinamide, Biochem. Pharmacol. 13 (1964) 1421-1435.
[19] W.H. Streng, Microionization constants of commercial cephalosporins, J. Phram. Sci. 67 (1978) 666-669.
[20] M.E. Abdel-Hamid, FSQ spectrophotometric and HPLC analysis of some cephalosporins in the presence of their alkali-induced degradation products, I1 Farmaco, 53 (1998) 132-138.