Study of photocatalytic degradation of environmentally harmful phthalate esters using Ni-doped TiO2 nanoparticles
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Undoped and Ni-doped TiO2 nanoparticles are synthesized using sol–gel technique. The physical, structural, optical and thermal properties of the samples are investigated using X-ray powder diffraction, Fourier transform infrared spectroscopy, transmittance electron microscopy, UV–visible diffuse reflectance and thermogravimetric analysis. The photocatalytic activity of the samples is investigated by the photocatalytic degradation of phthalate esters. Phthalate esters have been considered as endocrine disrupting compounds. Ni-doped TiO2 samples show better photocatalytic activity as compared to undoped TiO2 sample. The greater photocatalytic activity of doped samples as compared to undoped TiO2 can be attributed to the production of more number of electron–hole pairs in doped samples.
KeywordsSol–gel process X-ray methods Optical properties TiO2 Photocatalytic activity
The authors are thankful to Dr. Gurbinder Kaur for her help in analyzing the results. Authors are also thankful to UGC for financial help under meritorious fellowships in reference to Letter No. F.4-1/2006/(BSR)/7-304/2010(BSR).
- Abbad MMB, Kadum AAH, Mohamad AB, Takriff MS, Sopian K (2012) Synthesis and catalytic activity of TiO2 nanoparticles for photochemical oxidation of concentrated chlorophenols under direct solar radiation. Int J Electrochem Sci 7:4871–4888Google Scholar
- Ding X, An T, Li G, Chen J, Sheng G, Fu J, Zhao J (2008) Photocatalytic degradation of dimethyl phthalate ester using novel hydrophobic TiO2 pillared montmorillonite photocatalyst. Res Chem Intermed 34:63–83Google Scholar
- Ebraheem S, Antar El-Saied (2013) Band gap determination from diffuse reflectance measurements of irradiated lead borate glass system doped with TiO2 by using diffuse reflectance technique. Mater Sci Appl 4:324–329Google Scholar
- Jamil TS, Gad Allah TA, Ali MEM, Momba MNB (2015) Utilization of nano size TiO2 for degradation of phenol enrich water by solar photocatalytic oxidation. Desalin Water Treat 53:1101–1106Google Scholar
- Loan TT, Long NN (2014) Optical properties of anatase and rutile TiO2:Cr3+ powders. VNU J Sci Math Phys 30:59–67Google Scholar
- Madhu GM, Antony Raj MAL, Pai KVK (2009) Titanium oxide (TiO2) assisted photocatalytic degradation of methylene blue. J Environ Biol 30:259–264Google Scholar
- Staples CA (2003) Phthalate esters: the handbook of environmental chemistry. Springer, BerlinGoogle Scholar
- Uddin MJ, Islam MA, Haque SA, Hasan S, Amin MSA, Rahman MM (2012) Preparation of nanostructured TiO2 based photocatalysts by controlling the calcining temperature and pH. Int Nanolett 2:1–10Google Scholar
- Whang CM, Lim SS (2000) The effect of processing variables on structural changes and optical properties of SiO2–TiO2 sol-gel derived films. Bull Korean Chem Soc 21:1181–1186Google Scholar