Document Type : Research

Authors

1 department of physics, faculty of science,Vali-e-asr University of Rafsanjan

2 Physics Department Faculty of Science Vali-e-Asr University of Rafsanjan

3 ,department of physics, faculty of science,Vali-e-asr University of Rafsanjan

Abstract

In this paper, functionalized carbon nanotubes were covered with a biocompatible shell of silica (MWCNT/SiO2). Having a high amount of OH groups, silica shells avoid nanotubes agglomeration and are able to uniformly capture and stabilize arbitrary amounts of nanoparticles on their surface. MWCNT/SiO2 doped with different amounts of Fe3O4 nanoparticles. Three samples of Fe3O4/SiO2/MWCNT nanocomposites prepared by 1, 2, and 3 weight ratio of Fe3O4 to SiO2/MWCNT are labeled S1, S2, and S3, respectively. Then, they were characterized by X-ray diffraction spectroscopy (XRD) and scanning electron microscopy (SEM). The magnetic property of samples was investigated with vibrational sample magnetometer (VSM), which indicated the superparamagnetic property of nanocomposites. Due to their biocompatibility, nanocomposites were used as recyclable photocatalysts to remove methylene blue dye

Keywords

[1] مشجور، سکینه؛ یوسف‌زادی، مرتضی؛ علیشاهی، مجتبی (1397). ارزیابی سمیت سوسپانسیون آبی نانوذرات مگنتیت (Fe3O4) بر شاخص‌های زیستی آب شور )بارناکل( و آب شیرین )روتیفر(، مجله علمی شیلات ایران، سال بیست و هفت، شماره 3، اردیبهشت 97.
 
 
[2] S.Xie, W.Zh.Pan, B.Chang, L.fengSun, Mechanical and physical properties on carbon nanotube, J. Phys. Chem. Solids 61 (2000) 1153-1158.
[3] M. Arvand, M. Hassannezhad, Magnetic core–shell Fe3O4@SiO2/MWCNT nanocomposite modified carbon paste electrode for amplified electrochemical sensing of uric acid. Mater. Sci.Eng. C 36 (2014) 160-167.
[4] L. Zhu, X.Zeng, M.Chen, R.Yu, Controllable permittivity in 3D Fe3O4/CNTs network for remarkable microwave absorption performances, RSC Adv. 7 (2017) 26801-26808.
[5] A. P. Francis, T. Devasena, Toxicity of carbon nanotubes: A review, TOXICOL IND HEALTH.  34(3) 2018 200-210.
[6] D. Wang, D. laiHan, Zh. Shi, J. Wang, J. Yang, X. Li, H. Song, Optimized design of three - dimensional multi - shell Fe3O4/SiO2/ZnO/ZnSe microspheres with type II heterostructure for photocatalytic applications, APPL CATAL B-ENVIRON  227 (2018) 61-69.
[7] H. Rezaei, A. Vahidiana, R. Zareia, A. Soleymani, Degradation of nitro-aromatic explosives using recyclable magnetic photocatalyst: Catalyst synthesis and process optimization, J. Hazard. Mater. 325 (2017) 310-318.
[8] B. Hameed, M. El-Khaiary, Equilibrium kinetics and mechanism of malachite green adsorption on activated carbon prepared from bamboo by K2CO3 activation and subsequent gasification with CO2 J Hazard Mater 157 (2008) 344-351.
[9] F. Farahbakhsh, M. Ahmadi, H. S. Hekmatara, M. Sabet, E. Heydari-Bafrooei, Improvement of Photocatalyst Properties of Magnetic NPs by New Anionic Surfactant, MATER CHEM PHYS. 224 (2018) 279-285.
[10] M. Dehghani-Dashtabi, H. Hekmatara, J. Seyed-Yazdi, Synthesis and improved photoactivity of magnetic quaternary nanocomposites consisting of Fe3O4@ZnO core@shell nanoparticles decorated on graphene-oxide grafted poly-citric acid Physica B Condens. Matter 553 (2018) 11-17.