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Hanifehpour, Younes,Soltani, Behzad,Amani-Ghadim, Ali Reza,Hedayati, Behnam,Khomami, Bamin,Joo, Sang Woo Elsevier 2016 Materials research bulletin Vol.76 No.-
<P><B>Abstract</B></P> <P>We prepared pure and samarium-doped ZnS (Sm<SUB>x</SUB>Zn<SUB>1−x</SUB>S<SUB>1+0.5x</SUB>) nanoparticles via hydrothermal process at 160°C for 24h. XRD analysis shows that the particles were well crystallized and corresponds to a cubic sphalerite phase. SEM and TEM images indicate that the sizes of the particles were in the range of 20–60nm. The photocatalytic activity of Sm-doped ZnS nanoparticles was evaluated by monitoring the decolorization of Reactive Red 43 in aqueous solution under visible light irradiation. The color removal efficiency of Sm<SUB>0.04</SUB>Zn<SUB>0.96</SUB>S and pure ZnS was 95.1% and 28.7% after 120min of treatment, respectively. Among the different amounts of dopant agent used, 4% Sm-doped ZnS nanoparticles indicated the highest decolorization. We found that the presence of inorganic ions such as Cl<SUP>−</SUP>, CO<SUB>3</SUB> <SUP>2−</SUP> and other radical scavengers such as buthanol and isopropyl alcohol reduced the decolorization efficiency.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Sm-doped ZnS Nanomaterials were synthesized by hydrothermal method. </LI> <LI> The as-prepared compounds were characterized by XRD, TEM, XPS, SEM and UV techniques. </LI> <LI> The photocatalytic effect of compounds was determined by Reactive Red 43 degradation. </LI> <LI> The degradation of RRed 43 followed the Langmuir–Hinshelwood kinetic model. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Fatemeh Khodam,Zolfaghar Rezvani,Ali Reza Amani-Ghadim 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
We reported a facile strategy for assembling NiCoAl-layered double hydroxide/multi-walled carbonnanotubes (NiCoAl-LDH/MWCNTs) nanohybrid through noncovalent bonds. The assembling process andstructures of exfoliated LDH/CNTs nanohybrid were characterized by scanning electron microscopy(SEM), powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared(FT-IR) and specific surface area measurement. The effect of nanohybrid dosage, pH and contact time onthe adsorption process was optimized and modeled. The removal percentage of dye by nanohybrid was65% and the maximum adsorption capacity (qm) was 196.08 mg g 1 at the optimized conditions. Isotherm and kinetic of the adsorption process were investigated.
요네스피로즈살라리,Behzad Soltani,Ali Reza Amani-Ghadim,Behnam Hedayati,Bamin Khomami,주상우 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-
Pr-doped ZnS nanoparticles with variable praseodymium contents were successfully synthesized via ahydrothermal process. The products were characterized by XRD, SEM, TEM, XPS, TGA and UV–vistechniques. The photocatalytic performance of the as-synthesized nanoparticles was investigated for thedecolorization of Reactive Blue 19 solution under visible light irradiation. The highest decolorizationwas achieved with 3% Pr-doped ZnS nanoparticles. The order of inhibitory effect of radical scavengerswas butanol > Cl > CO32 > isopropyl alcohol. The Langmuir–Hinshelwood (L-H) adsorption and ratecoefficients for the photocatalytic process were successfully established.
Fatemeh Khodam,Hamid Reza Amani-Ghadim,Soheil Aber,Ali Reza Amani-Ghadim,Iraj Ahadzadeh 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
Herein, the Neodymium ion (Nd3+) doped CoAl-LDH have been successfully prepared via co-precipitation method and was used as a precursor of Nd-doped CoAl-mixed metal oxides (MMO). The photocatalytic activity of doped LDH and MMO was investigated in the degradation of an azo dye, C.I. Acid Red 14, under visible light irradiation. DRS and PL analysis demonstrated decreasing in the band gap energy and recombination of photo-induced charge carriers of Nd-doped LDH and MMO compared with the pristine CoAL-LDH. Due to significant difference in photocatalytic performance. A power law empirical kinetic model was obtained for predicting the photocatalytic degradation efficiency.