@article { author = {Grayeli Korpi, A.R. and Bahmanpour, Kh. M.}, title = {Influence of nitrogen ion implantation on the nanostructure and corrosivity of Ni/stainless steel substrates}, journal = {Progress in Color, Colorants and Coatings}, volume = {9}, number = {2}, pages = {77-83}, year = {2016}, publisher = {Institute for Color Science and Technology (ICST)}, issn = {2008-2134}, eissn = {2383-1790}, doi = {10.30509/pccc.2016.75879}, abstract = {Ion implantation is a surface modification technology to produce new material on the surface by impingement of high energy ions from the ion accelerator. In this work, AISI 304 stainless steels were coated with 90 nm Ni film by electron beam deposition and implanted by a flow of 5×1017 N cm−2 at 400 K temperature with different implantation energies of 10, 20, 30 and 40 keV. The prepared samples were corrosion tested in 3.5 NaCl solution using potentiodynamic polarization technique. Crystallographic and morphological structure of the samples were analyzed by Xray diffraction XRD and scanning electron microscope SEM respectively. A clear correlation between the physical analyses XRD and SEM and the potentiodynamic results is achieved. The highest corrosion resistance with a corrosion current density of 0.172 µA cm2 was achieved in case of sample which was N ion implanted at 20 keV energy.}, keywords = {Ni Thin Films,corrosion,Potentiodynamic,Stainless steel,SEM}, url = {https://pccc.icrc.ac.ir/article_75879.html}, eprint = {https://pccc.icrc.ac.ir/article_75879_a0ece96ca3999f68dc3f3eda1c88771d.pdf} } @article { author = {Mahmoodi, N.M. and Soltani-Gordefaramarzi, Sajjad}, title = {Dye Removal from Single and Quaternary Systems Using Surface Modified Nanoparticle: Isotherm and Kinetics}, journal = {Progress in Color, Colorants and Coatings}, volume = {9}, number = {2}, pages = {85-97}, year = {2016}, publisher = {Institute for Color Science and Technology (ICST)}, issn = {2008-2134}, eissn = {2383-1790}, doi = {10.30509/pccc.2016.75880}, abstract = {In this paper, dye removal ability of the surface modified nanoparticle SMN copper ferrite from single and quaternary systems was investigated. Acid Blue 92 AB92, Direct Green 6 DG6, Direct Red 23 DR23 and Direct Red 80 DR80 were used as model compounds. The effect of surfactant concentration, adsorbent dosage, dye concentration and pH on dye removal was evaluated. The adsorption isotherm and kinetic were studied. The maximum dye adsorption capacity Q0 was 178.571 mg/g AB92, 49.261 mg/g DG6, 39.841 mg/g DR23 and 43.290 mg/g DR80 for SMN. It was found that dye adsorption onto SMN followed Langmuir isotherm. Adsorption kinetic of dyes was found to conform to pseudo-second order kinetics. The results showed that the SMN being a magnetic adsorbent might be a suitable alternative to remove dyes from colored aqueous solutions.}, keywords = {Quaternary system,Dye removal,Surface modified nanoparticle,Isotherm,Kinetic}, url = {https://pccc.icrc.ac.ir/article_75880.html}, eprint = {https://pccc.icrc.ac.ir/article_75880_c39d6460478df952ca304ff85e21fe17.pdf} } @article { author = {Ziapour, A. and Sefidrooh, M. and Moadeli, M.R.}, title = {Adsorption of Remazol Black B Dye from Aqueous Solution Using Bagasse}, journal = {Progress in Color, Colorants and Coatings}, volume = {9}, number = {2}, pages = {99-108}, year = {2016}, publisher = {Institute for Color Science and Technology (ICST)}, issn = {2008-2134}, eissn = {2383-1790}, doi = {10.30509/pccc.2016.75881}, abstract = {The dye of wastewater is a major environmental problem. Chemical and biological treatment of wastewaters containing dye is difficult due to the low level of adsorption and chemical stability of dyes. Activated carbon is usually used for adsorption of these materials, but because of high prices and restore problems, researchers trying to find available, low-cost materials with high adsorption. In this study, bagasse was used for adsorption of Remzol Black B dye and its capability was examined. Variables were concentration, temperature, pH and contact time, and the degree of adsorption was examined in different situations. Then, adsorption isotherm following of Langmuir and Freundlich models was investigated. The results showed that adsorption efficiency depends more on pH of solution and less on temperature of the solution. Maximum adsorption of Remzol Black B dye by bagasse was in the first 15 minutes of contact. The study of adsorption isotherm showed that both models are suitable for description of adsorption of Remzol Black B dye by bagasse. Maximum adsorption of Remzol Black B dye by bagasse was calculated as 7.51 mg/g. Results of this study showed that bagasse could be used as a low-cost bio adsorbent for the adsorption of Remzol Black B from aqueous solution.}, keywords = {Adsorption,Adsorption Isotherm,Bagasse,Remzol Black B Dye}, url = {https://pccc.icrc.ac.ir/article_75881.html}, eprint = {https://pccc.icrc.ac.ir/article_75881_16fbdca52d3cf23cc92d5b890490769e.pdf} } @article { author = {Lotfi, R. and Abedini Khorrami, S. and Olya, M. E. and Moradi, S. and Motiee, F.}, title = {Effect of molar ratio and calcination temperature on particle size of CeO2/-Al2O3 nanocomposites prepared via reverse micelle process}, journal = {Progress in Color, Colorants and Coatings}, volume = {9}, number = {2}, pages = {109-116}, year = {2016}, publisher = {Institute for Color Science and Technology (ICST)}, issn = {2008-2134}, eissn = {2383-1790}, doi = {10.30509/pccc.2016.75876}, abstract = {A porous composite of cerium oxide and gama aluminum oxide pigments were prepared via sol-gel processing controlled within reverse micelles of nonionic surfactant Triton X-114 in cyclohexane. The precursor in heated at several calcinations temperature between 823 to 1123K. This process includes three steps. In the first step of preparation the ceria sol was prepared. In the second step, cyclohexane was mixed with surfactant and distilled water by the addition of ceria sol. In final step, nano gama aluminum oxide was fluently injected into the mixture. The precursor micellar ceria/-alumina sol with different molar ratio was mechanically stirred to form a homogeneous suspension. The mixture was washed with some organic solvent. Also, the effect of different molar ratio of Ce:Al on the crystallization was studied. The study of X-ray diffraction XRD, transmission electron microscopy TEM, scanning electron microscopy SEM, temperature programmed reduction TPR and N2 adsorption/desorption isotherm suggested that well crystalline nanosized pigments are obtained. The product pigments posses mesoporosity with broadly distributed pores between 20 to 45 nm diameters. Surface area increases by increasing the calcination temperature. Also, the particle size of the pigments decreases with an increasing in molar ratio of Ce:Al.}, keywords = {Nanocomposite,Reverse Micelle,calcination temperature,Molar Ratio,cerium oxide,aluminum oxide}, url = {https://pccc.icrc.ac.ir/article_75876.html}, eprint = {https://pccc.icrc.ac.ir/article_75876_b23514b4bf70b4fee09c44b4e059e64b.pdf} } @article { author = {Mohammadi, A. and Hosseini, S.M.A. and Bahrami, M.J. and Shahidi, M.}, title = {Corrosion Inhibition of Mild Steel in Acidic Solution by Apricot Gum as a Green Inhibitor}, journal = {Progress in Color, Colorants and Coatings}, volume = {9}, number = {2}, pages = {117-134}, year = {2016}, publisher = {Institute for Color Science and Technology (ICST)}, issn = {2008-2134}, eissn = {2383-1790}, doi = {10.30509/pccc.2016.75877}, abstract = {The inhibitive effect of apricot gum AG on mild steel in 0.5 M phosphoric acid solution was investigated by potentiodynamic polarization, electrochemical impedance spectroscopy EIS, linear polarization resistance and electrochemical noise EN techniques. The inhibition efficiency increased with increasing AG concentration up to a certain value and decreased with increasing temperature. Polarization curves indicated that AG acts as a mixed type inhibitor. The EN data were analyzed by statistical and wavelet methods. The results obtained from analysis of EN data was in good agreement with those arising from the polarization and EIS measurements. The adsorption of the inhibitor on the alloy surface in 0.5 M H3PO4 followed the Langmuir isotherm. According to the calculated values of free energy and enthalpy adsorption it was revealed that the adsorption of inhibitor on the steel surface was a combination of physical and chemical adsorption. The morphologies of the uninhibited and inhibited mild steel surfaces in 0.5 M H3PO4 were analyzed by scanning electron microscope SEM. SEM images showed that the alloy surface damage is significantly decreased in presence of the inhibitor.}, keywords = {Corrosion inhibitor,Electrochemical Impedance Spectroscopy (EIS),Electrochemical noise resistance,Phosphoric acid,polarization,Scanning electron microscopy (SEM)}, url = {https://pccc.icrc.ac.ir/article_75877.html}, eprint = {https://pccc.icrc.ac.ir/article_75877_2788b244817f8797653e1f9e821aa434.pdf} } @article { author = {Mehrizad, A. and Gharbani, P.}, title = {Removal of methylene blue from aqueous solution using nano-TiO2/UV process: Optimization by response surface methodology}, journal = {Progress in Color, Colorants and Coatings}, volume = {9}, number = {2}, pages = {135-143}, year = {2016}, publisher = {Institute for Color Science and Technology (ICST)}, issn = {2008-2134}, eissn = {2383-1790}, doi = {10.30509/pccc.2016.75878}, abstract = {This work describes the photocatalytic removal of methylene blue from aqueous solution by titanium dioxide nanoparticles under ultraviolet irradiation in a batch system. The effect of operational parameters such as irradiation time, nano titanium dioxide dosage, pH and initial methylene blue concentration were analyzed and optimized by response surface methodology in the nano titanium dioxide/ultraviolet irradiation process. As results, the predicted values were best fitted with the experimental data R2 0.9736. The maximum removal efficiency was in the following conditions: irradiation time of 31.5 min, nano titanium dioxide dosage of 1.19 g L-1, pH of 7.8 and initial methylene blue concentration of 4.5 mg L-1. Under the optimized status, the removal yield was obtained more than 80. Carrying out the experiment under this optimum condition resulted in the same removal efficiency, which indicated the success and suitability of the central composite design model for the optimization of the process.}, keywords = {Methylene blue,Nano,TiO2,optimization,photocatalyst,Response Surface Methodology}, url = {https://pccc.icrc.ac.ir/article_75878.html}, eprint = {https://pccc.icrc.ac.ir/article_75878_f3ca81255c910f2b9fd7bf6befc083fa.pdf} }