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Surface Modification Of Polypropylene Nonwoven With Chitosan, Tio$_{2}$, And Ag Nanoparticles For The Removal Of Acid Dye From Water, Aminoddin Haji, Mohsen Hadizadeh, Masoumeh Ferdosi
Surface Modification Of Polypropylene Nonwoven With Chitosan, Tio$_{2}$, And Ag Nanoparticles For The Removal Of Acid Dye From Water, Aminoddin Haji, Mohsen Hadizadeh, Masoumeh Ferdosi
Turkish Journal of Chemistry
In this study, polypropylene nonwoven was coated with chitosan after being activated by oxygen/argon low-pressure plasma. The chitosan-treated sample (PP-Ch) was coated with TiO$_{2}$ nanoparticles by a pad-dry method. Silver nanoparticles were in situ synthesized on the chitosan-TiO$_{2}$-coated sample by a chemical reduction method. The morphology of each of the samples mentioned above was evaluated by FESEM. The efficiency of each sample in the removal of C.I. Acid Brown 248 from aqueous media was evaluated. The PP-Ch sample removed 90% of the dye at pH=3. Coating the PP-Ch sample with TiO$_{2}$ and silver nanoparticles improved the dye removal efficiency under …
Synthesis Of Copper Nano/Microparticles Via Thermal Decomposition And Their Conversion To Copper Oxide Film, Çağdaş Allahverdi̇
Synthesis Of Copper Nano/Microparticles Via Thermal Decomposition And Their Conversion To Copper Oxide Film, Çağdaş Allahverdi̇
Turkish Journal of Chemistry
Copper nano/microparticles were synthesized in octadecene at 290 °C by thermal decomposition method. Copper acetate monohydrate, stearic acid, and 1-octadecanol were used as copper precursor, capping and mild reducing agents, respectively, at the synthesis. Borosilicate glass substrates submerged into the reaction solution during the synthesis were coated by copper nano/ microparticles. Thermal decomposition and coating techniques were combined in this study. Copper nano/microparticles were thoroughly characterised via X-ray powder diffraction, X-ray photoelectron, Raman, and attenuated total reflectance-Fourier transform infrared spectroscopies, and scanning and transmission electron microscopies. The average minimum Feret?s diameter of these synthesized copper particles was measured as ~87 …