Abstract
Flower like bismuth oxy chloride (BiOCl) was successfully synthesized by a simple hydrolytic method at room temperature. The precursor and as-prepared samples were characterized by X-ray diffraction (XRD), High Resolution Field Emission Scanning Electron Microscope (HR FESEM). The results indicated that the as-prepared BiOCl sample is self-assembled hierarchically with nano sheets. The photocatalytic activity of BiOCl was tested on the degradation of the Oxamyl (OM) under solar light irradiation. The results showed that pesticide molecules could be efficiently degraded over BiOCl under solar light irradiation. All the experiment were carried out in the following reaction condition, [OM] = 10-4 mol dm-3, BiOCl NPs= 40mg/50ml, pH= 6.3. Effect of operational parameter such as concentration of H2O2, K2S2O8, FeCl3, Fenton’s reagent (Fe3+/H2O2) and N2, O2 purging on the photocatalytic degradation was observed.
Highlights
Oxamyl is a carbamate insecticide/acaricide/nematicide that controls a broad spectrum of insects, mites, ticks, and roundworms
For the bismuth oxy chloride (BiOCl), the (101), (102), (001) and (110) diffraction peaks are sharper and stronger, while other peaks are relatively weak. This means that BiOCl should favour to grow along the all the three x, y and z axis [3]
The results indicated that the rate of degradation of OM increased with increasing concentration up to 4.0 × 10-6 mol dm-3 of H2O2 above this concentration, degradation efficiency was found to be decreased
Summary
Oxamyl is a carbamate insecticide/acaricide/nematicide that controls a broad spectrum of insects, mites, ticks, and roundworms. It may work both through systemic distributions in the target pest and on contact. Oxamyl is used on field crops, vegetables, fruits, and ornamental plants and may be applied directly onto plants or the soil surface. Agricultural wastewater, contaminated with such toxic pesticides, pollutes surface and groundwater through different ways. These types of pollution are very dangerous for eco system. Removals of such toxic pesticides are very essential to save the ecosystem
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