Photocatalytic degradation of monocrotophos pesticide—An endocrine disruptor by magnesium doped titania

Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

“…Figure 7(a)-7(c) shows irregular sphericalshaped particles with size ranging from 17-62 nm. The photocatalysts maintained their average size within 26-31 nm, comparable to as reported the literature (Avasarala et al 2011;Hwang et al 2009). As the Mg loading increased, the particle size also increased in addition to the presence of cubical-shaped structural materials (indicated by white circle in Figure 7(d)).…”

“…Similar results were also observed by Avasarala et al (2011). The XRD patterns for the other photocatalysts with different Mg loadings and calcined at different temperatures were similar to that represented in Figure 6.…”

“…The presence of magnesium ion, (Mg 2+ ) resulted in the photocatalytic activity being extended to the visible region. The incorporation of Mg 2+ on TiO 2 did not influence the crystal patterns of TiO 2 particles (Avasarala et al 2011) as was indicated by XRD data which showed the presence of single anatase phase. Mg/TiO 2 has been employed in photoreduction process, converting nitrogen into ammonia (Ileperuma et al 1990) and also in photocatalytic degradation of organophosphate pesticide (monochrotophos) (Avasarala et al 2011).…”

“…This observation indicated reduction in band gap. In addition, Avasarala et al (2011) also proved that the presence of Mg could also reduce the recombination rate of the photogenerated electrons and holes. Combined oxidative-extractive desulfurization (Jiang et al 2011b;Zhang et al 2009aZhang et al , 2009b has also been reported as one of the desulfurization methods where imidazolium-phosphate ionic liquids displayed good extractive performance (Zaid 2011;Zhang et al 2009b).…”

“…Based on previously reported study on Mg/TiO 2 photocatalyst (Avasarala et al 2011), it was shown that the optimum performance was achieved employing 1.00 wt. % Mg loading.…”