سنتز و مشخصه یابی نانو ذرات اسپینلی پایه آهن با پوشش های مختلف و بررسی توانایی آنها در تخریب فتوکاتالیستی متیلن آبی

در اﯾﻦ ﭘﮋوﻫﺶ ﻧﺎﻧﻮ ذرات tio2-zn0.5ni0.5fe2o4 ، zn0.5ni0.5fe2o4 ،nife2o4 و tio2-zn0.5ni0.5fe2o4-rgo ﺑﻪ ﺗﺮﺗ ﯿﺐ ﺑﻪ روش ﺳﻞ-ژل اﺣﺘﺮاﻗﯽ، ﻫﻤﺮ ﺳﻮﺑﯽ و دو ﻧﻤﻮﻧﻪ ﻧﺎﻧﻮ ﮐﺎﻣﭙﻮزﯾﺖ ﺑﻪ روش اﺧﺘﻼط ﻓﯿﺰﯾﮑﯽ ﺳﻨﺘﺰ ﺷﺪﻧﺪ. ﺑﺮای ﻣ ﺸﺨ ﺼﻪ ﯾﺎﺑﯽ ﻧﺎﻧﻮذرات از آﻧﺎﻟﯿﺰﻫﺎی ﺗﺒﺪﯾﻞ ﻓﻮرﯾﻪ ﻣﺎدون ﻗﺮﻣﺰ ft-ir ، اﻟﮕﻮی ﭘﺮاش ﭘﺮﺗﻮ اﯾﮑﺲ xrd ، ﻣﯿﮑﺮوﺳﮑﻮپ اﻟﮑﺘﺮوﻧﯽ روﺑﺸﯽ sem ، ﻣﻐﻨﺎﻃﯿﺲ ﺳﻨﺞ ﻧﻤﻮﻧﻪ ارﺗﻌﺎﺷﯽ vsm ، ﻃﯿﻒ ﺳﻨﺠﯽ ﺑﺎزﺗﺎﺑﯽ drs و اﻧﺪازه ﮔﯿﺮی ﺗﺨﻠﺨﻞ ﺳﻨﺠﯽ ﺟﺬب و واﺟﺬب ﺑﺎ bet ا ﺳﺘﻔﺎده ﺷﺪه ا ﺳﺖ. ﻧﺘﺎﯾﺞ ﻧ ﺸﺎن ﻣﯽدﻫﺪ ﮐﻪ ذرات ﺳﻨﺘﺰ ﺷﺪه در ﻣﻘﯿﺎس ﻧﺎﻧﻮ ﻣﯽﺑﺎﺷﻨﺪ و ﻓﺮاﯾﻨﺪ ﺟﺬب در داﺧﻞ ﺣﻔﺮات ﺻﻮرت ﻣﯽﮔﯿﺮد. ﻫﻤﭽﻨﯿﻦ ﻓﺮاﯾﻨﺪ اﮐﺴﯿﺪاﺳﯿﻮن ﭘﯿﺸﺮﻓﺘﻪ aop1 ﺑﺎ اﺳﺘﻔﺎده از ﻓﺘﻮﮐﺎﺗﺎﻟﯿﺴﺖ ﺑﺮای ﻧﺎﻧﻮ ذرات ﻣﻮرد ارزﯾﺎﺑﯽ ﻗﺮار ﮔﺮﻓﺖ و ﺑﻬﺘﺮﯾﻦ ﻋﻤﻠﮑﺮد را ﻧﺎﻧﻮ ﮐﺎﻣﭙﻮزﯾﺖ tio2-zn0.5ni0.5fe2o4-rgo ﺑﺎ ﻣﻐﻨﺎﻃﯿﺲ اﺷﺒﺎع emu/g 65/88 و درﺻﺪ ﺗﺨﺮﯾﺐ 95 % ﻧﺸﺎن داد.

synthesis and characterization of iron-based spinel nanoparticles with different coatings and their ability in photocatalytic degradation of methylene blue

in this research, nanoparticles of nife2o4, zn0.5ni0.5fe2o4, tio2-zn0.5ni0.5fe2o4 and tio2-zn0.5ni0.5fe2o4-rgo were synthesized respectively by combustion sol-gel method, co-precipitation and two nanocomposite samples by physical mixing method. for the characterization of nanoparticles from fourier transform infrared ft-ir analysis, x-ray diffraction pattern xrd , scanning electron microscopy sem , vibrating sample magnetometer vsm , diffuse reflectance spectroscopy drs and porosimetry measurements. adsorption and desorption have been used with bet. the results show that the synthesized particles are nanoscale ,and the absorption process takes place inside the holes. also, the advanced oxidation process aop was evaluated using photocatalyst for nanoparticles and the best performance was tio2-zn0.5ni0.5fe2o4-rgo nanocomposite with saturation magnetism emu/g of 65.88 with it showed a destruction of 95%.