2016
DOI: 10.1080/19443994.2015.1063461
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Degradation of Lindane using two nanosized BiOXs and their heterojunction under visible light

Abstract: In this paper, bismuth oxybromide (BiOBr), bismuth oxyiodide (BiOI), and heterojunction (BiOI 0.5 Br 0.5 ) were prepared via facile co-precipitation method, a low-temperature solution route, and facile chemical etching method, respectively. They were prepared by Bi (NO 3 ) 3 ·5H 2 O as the Bi source. The resulting BiOBr, BiOI, and BiOI 0.5 Br 0.5 photocatalysts were fully characterized using X-ray diffraction, energy-dispersive X-ray spectroscopic, scanning electron microscopy, high-resolution transmission ele… Show more

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Cited by 17 publications
(7 citation statements)
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“…3) showed red shift with increasing X atomic numbers which is in accordance with Jia et al, 2011. [27] An intense absorption edges in the visible light region were observed for all the prepared catalysts at 440 nm, 645 nm and 700 nm with BiOBr, BiOI and BiOI0.5Br0.5 respectively.…”
Section: Characterizationmentioning
confidence: 90%
“…3) showed red shift with increasing X atomic numbers which is in accordance with Jia et al, 2011. [27] An intense absorption edges in the visible light region were observed for all the prepared catalysts at 440 nm, 645 nm and 700 nm with BiOBr, BiOI and BiOI0.5Br0.5 respectively.…”
Section: Characterizationmentioning
confidence: 90%
“…open sci. 7: 191632 that are related to aggregates presented in mesopores, and the little-marked uptake over a range of high P/P o [61,67]. Specific surface areas were significantly increased with the increment of tungsten concentration in the order of 91.3, 96.51, 99.9 and 124.3 m 2 g −1 for ZG, ZGW1, ZGW2 and ZGW3 samples, respectively, and decreased to be 90 m 2 g −1 for ZGW4 sample.…”
Section: Characterization Of the Prepared Materialsmentioning
confidence: 99%
“…ð3:1Þ Figure 5 shows the plots of F(R ∞ )E) 1/2 versus photo energy for the estimation of the band gap energy for ZG, ZGW1, ZGW2, ZGW3 and ZGW4 samples. The band gap value was determined by drawing (F(R).hʋ) 1/2 against photo energy and extrapolating the linear part of the curve to (F(R).hʋ) 1/2 = 0 according to Kubelka-Munk using linear fit [61] (electronic supplementary material, S.2). Electron paramagnetic resonance (EPR) is one of the most important tools used to describe the defects in solids because most of the defects contain unpaired electrons.…”
Section: Characterization Of the Prepared Materialsmentioning
confidence: 99%
“…Figure 2 shows that the absorption edge decreased upon doping with the lowest values found for ZFWC2 (974 nm). The band gap (BG) value was obtained by plotting F(R∞)E) 1/2 versus photo energy, and then a linear fit was used to detect BG based on the Kubelka-Munk theory [37]. The BG values were obtained using the plots in Figures 3 and 4, and their values are shown in Table 3.…”
Section: Photocatalysis Characterizationsmentioning
confidence: 99%
“…The reaction was found to follow pseudofirst-order kinetics (Equation ( 2)); the photodegradation reaction rate decreased upon an increase in CF concentration-from 0.065 min −1 at 20 mg/L, to 0.0337 min −1 at 50 mg/L (Figure 11). This was mainly due to a decrease in light penetration with an increase in dye concentration (with the dye acting as a barrier against the light), causing a decrease in the light intensity at the catalyst's surface [33,35], in addition to the unavailability of active sites upon adsorption and aggregation of dye molecules [37]. Moreover, the reaction kinetics were studied using a pseudo-second-order equation (Equation ( 3)), and are shown in Figure 12, which shows that the correlation coefficient was very low compared with that found in the pseudo-first-order kinetics (Figure 10).…”
Section: The Effect Of Cf Concentrationmentioning
confidence: 99%