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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: International Journal of Nano Dimension
- نوع مقاله: Journal Article
- کلمات کلیدی: Photo catalyst,Microwave method,Hausmannite,Mn3O4,Simarouba Glauca
- چکیده:
- چکیده انگلیسی: Mn3O4 nanoparticles has been synthesised from Manganese (II) acetate and Simarouba Glauca leaf extract using microwave heating. This novel method of synthesis of Mn3O4 is fast, low-cost, non-toxic and environment friendly. The synthesised product was characterised by powder X-ray diffraction(XRD),Fourier transform infrared spectroscopy( FT-IR), Ultraviolet-Visible spectroscopy( UV-Visible), X-ray photoelectron spectroscopy( XPS), Scanning electron microscopy(SEM) and Transmission electron microscopy(TEM). The prepared material was identified as of tetragonal hausmannite crystalline structure with spherical morphology and particle size 15 nm. Photo catalytic degradation ability of the synthesised product was examined by using it for the degradation of Malachite green dye in various experimental conditions under visible light. The synthesised Mn3O4 was found to be an efficient photo catalyst for the removal of Malachite green at the optimum conditions of pH 9, adsorbent dose 0.1 g and dye concentration 20ppm. This study thus reveals the applicability of nanoparticles of Mn3O4 for the removal of pollutants from industrial waste water.
- انتشار مقاله: 20-12-1397
- نویسندگان: Gopalakrishnan Nair Sreekala,Fathimabeevi Abdullakutty,Bhaskaran Beena
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Nano Dimension
- نوع مقاله: Journal Article
- کلمات کلیدی: Antimicrobial activity,Photodegradation,Nano photocatalyst,Biogenic method,CuO nanostructures
- چکیده:
- چکیده انگلیسی: Present work focuses on the synthesis strategies for different CuO nanostructures along with associated formation mechanisms and their interesting fundamental properties, and promising applications in biological and environmental remediation. We present a variety of synthesis techniques for producing diverse types of CuO nanostructures with various morphologies such as nanoparticles, nanoleaves, nanotubes, and nanoflowers. The effect of synthesis parameters on manipulating the nanoscale features along with the associated growth mechanisms for these unique morphologies is also discussed. The surface, electronic and optical properties of these nanostructures is also detailed. The photocatalytic and antimicrobial applications of these nanostructures are systematically introduced and summarized. Congo red and Malachite green organic dyes were degraded by these CuO nanostructures and it was found that CuO nanoflowers are more favorable for the degradation of Congo red and Malachite Green due to their higher surface sites and surface defects. Overall, in addition to size, morphology has a significant effect on the properties and applications of nanomaterials. The synthesized novel hierarchical CuO nanostructures with large surface areas and carefully defined surfaces are best suited for treating industrial effluents.
- انتشار مقاله: 01-07-1396
- نویسندگان: Asha Radhakrishnan,Padmavathi Rejani,Bhaskaran Beena
- مشاهده