ORIGINAL RESEARCH
Exploring the Photodegradation of Bisphenol A in a Sunlight/Immobilized N-TiO2 System
Chao-Yin Kuo, Ya-Hui Yang
 
More details
Hide details
 
Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology,
123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan
 
 
Pol. J. Environ. Stud. 2014;23(2):379-384
 
KEYWORDS
ABSTRACT
Few studies have examined the photodegradation of bisphenol A (BPA) by sunlight/immobilized TiO2 systems. In this investigation, N-doped TiO2 (N-TiO2) was prepared by the calcination of Degussa P25 and urea. The surface characteristics of N-TiO2 were analyzed by X-ray diffraction, specific surface area analysis, ultraviolent (UV)-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of the prepared photocatalysts was determined by using them in the photodegradation of BPA under sunlight irradiation. The N-doping of TiO2 reduced the particle size and band gap of the compound, while increasing the specific surface area and percentage of anatase therein. XPS characterization confirms the substitution of O in the crystal lattice for N species in N-TiO2, forming O-Ti-N. The BPA degradation rate can be approximated by pseudofirst- order kinetics. At a N/Ti mole ratio of one for N-TiO2, the rates of BPA photodegradation and mineralization were 0.042 and 0.006 min-1, respectively.
eISSN:2083-5906
ISSN:1230-1485
Journals System - logo
Scroll to top