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Noshin Mir,Mansoureh Rakhshanipour,Ameneh Heidari,Amir Abbas Mir,Masoud Salavati-Niasari 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
ZnO nanohemispheres are successfully synthesized via thermal decomposition approach using [bis(2-hydroxy-1-naphthaldehydato)zinc(II)] complex, as precursor. The final ZnO nanoparticles werecharacterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electronmicroscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, and photoluminescence (PL)spectroscopy. Furthermore, the same solid phase thermal treatment is preformed and the morphology iscompared with the obtained ZnO nanohemispheres.
Jilla Saffari,Davood Ghanbari,Noshin Mir,Khatereh Khandan-Barani 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
CoFe2O4 (CoFe) nanoparticles were synthesized via a facile surfactant-free sonochemical reaction. Forpreparation of magnetic polymeric films, CoFe2O4 nanoparticles were added to polystyrene (PS). Nanoparticles were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM),and transmission electron microscopy (TEM). Magnetic properties of the samples were investigatedusing an alternating gradient force magnetometer (AGFM). CoFe2O4 nanoparticles exhibit aferromagnetic behaviour with a saturation magnetization of 62 emu/g and a coercivity of 640 Oe atroom temperature. By preparing magnetic films the coercivity is increased. The coercivity of PS/CoFe2O4(10%) nanocomposites is higher than that obtained for PS/CoFe2O4 (30%).
Mahnaz Dadkhah,Masoud Salavati-Niasari,Noshin Mir 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
Nanoparticulated TiO2 materials with anatase structure were synthesized by using two stephydrothermal method and using amine ligands as shape controllers. The products were characterizedby X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electronspectroscopy (TEM), scanning electron microscopy (SEM), and UV–vis spectroscopy. Dye-sensitizedsolar cells (DSSCs) employing these materials achieved conversion efficiencies as high as 2.61% forsmallest nanoparticles that was resulted of an effective shape controller.
Rozita Foulady Dehaghi,Mohsen Behpour,Noshin Mir 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.8
In Scheme 1 in the original publication, “Basic Blue 28” should be replaced with “Basic Blue 41”. The corrected scheme appears below: In the original publication, the charges of all the resonance forms in Scheme 2(b) and 2(c) should be positive. Also, the corresponding explanation of this scheme which is placed in paragraph 3, page 7 should be corrected. The corrected scheme and paragraph appears below and the changes to the paragraph are shown in bold: Moreover, it can be observed that Basic Yellow 28 is more degraded at acidic pH=2 than two other dyes. This difference could be attributed to the possible resonance forms of three different dyes (Scheme 2). By drawing two different resonance forms of the dyes, it is observed that all dyes have two different resonance forms which both of them are cationic. It is more likely that in acidic pH, the instantly cationic structures of two later dyes are absorbed on TiO2 surface with positive potential zeta due to their bigger size and high charge distribution and be degraded. Thus, it is observed that in acidic pH, Basic Red 46 and Basic Blue 41 dyes are more degraded than Basic Yellow 28 dye.
Purification of textile wastewater by using coated Sr/S/N doped TiO2 nanolayers on glass orbs
Rozita Foulady Dehaghi,Mohsen Behpour,Noshin Mir 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.7
Simultaneous doping of TiO2 nanoparticles with three elements including Sr, S, and N is reported. The resulting material shows superior photocatalytic performance toward degradation of textile waste under visible and sunlight. The pure and doped TiO2 nanolayers were prepared by sol-gel method and were fixed on a bed of glass orbs. The immobilized TiO2 were characterized by a variety of techniques: X-ray diffraction (XRD), scanning electron microscopy (SEM), spectroscopy diffusion reflection (DRS), energy dispersive X-ray spectrometry (EDS) and elemental analysis (CHNS). The photocatalytic activity of the prepared fixed-bed materials toward degradation of the textile wastes was determined by using ultraviolet-visible spectroscopy (UV-Vis) and measurement of the chemical oxygen demand testing (COD). The best photocatalytic activity was observed with the use of Sr/S/N-TiO2 nano-layers. Afterwards, the experimental conditions were optimized by tuning reaction parameters, including amount of doped metal ion on photocatalyst structure, sample solution pH and photoreactor output flow rate. The results confirmed that at natural pH 5.9 of sample solution, maximum decomposition of 91-99% of azo dyes was obtained in 8 h under visible irradiation. Finally, the experiments were repeated under 1.5 AM sunlight with high volume of reactants in order to confirm the cost-effectiveness of the designed photocatalyst.