Synthesis, Characterization, Magnetic Properties and Photocatalytic Activity of M-Type BaGdxAlxCrxFe(12-3x) O19 Hexagonal Ferrites
محورهای موضوعی : Journal of Nanoanalysis
Zahra Pakdel
1
,
Mohammad Yousefi
2
,
Malak Hekmati
3
,
Maryam Torbati
4
1 - Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 - Pharm. Sci. Branch
4 - Department of Chemistry, College of Basic Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, 3319118651 ,Iran
کلید واژه: Hexagonal Ferrites, Photocatalytic, Sol- gel, Magnetic,
چکیده مقاله :
In this study, BaGdxAlxCrxFe(12-3x)O19 (x = 0.0, 0.2, 0.4, 0.6, 0.8) hexagonal ferrites were synthesized by sol-gel combustion methods. The samples' X-ray diffraction pattern shows a hexagonal phase that was identified using JCPDS data (00-033-1340) and had hexagonal crystal symmetry in space group P63/MMC. On the FTIR spectrum of BaGdxAlxCrxFe(12-3x)O19, the bands at 431-605cm-1 correspond to the Fe-O stretching vibrations and prove the formation of nanohexagonal ferrites. Field emission electron microscopy (FESEM) pictures have represented the formation of hexagonal nanoparticles, but by increasing the dopants, which have less magnetic properties than iron (III) ions, the hexagonal structure can be seen well yet. A vibrating sample magnetometer (VSM) shows the Ms value of the barium hexaferrite (BHF) sample at approximately 63.76 emu/g, which is proportional to the predicted value for standard hexaferrites, and Hc at approximately 7000 Oe, confirming the magnetic hardness of the nanocomposite. The hysteresis diagrams show that the values of Ms and Hc decrease with increasing dopants. The degradability of methylene blue (MB) demonstrates that all samples have desirable photocatalytic properties in visible light. The degradability rates in all samples are 65%-99%. The results indicate that the degradability rate increases significantly as the dopant ions increase.
In this study, BaGdxAlxCrxFe(12-3x)O19 (x = 0.0, 0.2, 0.4, 0.6, 0.8) hexagonal ferrites were synthesized by sol-gel combustion methods. The samples' X-ray diffraction pattern shows a hexagonal phase that was identified using JCPDS data (00-033-1340) and had hexagonal crystal symmetry in space group P63/MMC. On the FTIR spectrum of BaGdxAlxCrxFe(12-3x)O19, the bands at 431-605cm-1 correspond to the Fe-O stretching vibrations and prove the formation of nanohexagonal ferrites. Field emission electron microscopy (FESEM) pictures have represented the formation of hexagonal nanoparticles, but by increasing the dopants, which have less magnetic properties than iron (III) ions, the hexagonal structure can be seen well yet. A vibrating sample magnetometer (VSM) shows the Ms value of the barium hexaferrite (BHF) sample at approximately 63.76 emu/g, which is proportional to the predicted value for standard hexaferrites, and Hc at approximately 7000 Oe, confirming the magnetic hardness of the nanocomposite. The hysteresis diagrams show that the values of Ms and Hc decrease with increasing dopants. The degradability of methylene blue (MB) demonstrates that all samples have desirable photocatalytic properties in visible light. The degradability rates in all samples are 65%-99%. The results indicate that the degradability rate increases significantly as the dopant ions increase.
REFERENCES
[1] Mesdaghi S, Yousefi M, Sadr MH, Mahdavian A. Effect of Sn 4+–Zn 2+–Co 2+ Doping on Structural and Magnetic Properties of M-Type Barium Hexaferrites. IEEE Transactions on Magnetics. 2018; 55(1):1-6.
[2] Ghezelbash S, Yousefi M, Hossainisadr M, Baghshahi S. Structural and magnetic properties of Sn 4+ doped strontium hexaferrites prepared via sol–gel auto-combustion method. IEEE Transactions on Magnetics. 2018; 54(9):1-6.
[3] Tavakolinia F, Yousefi M, Afghahi SSS, Baghshahi S, Samadi S. Synthesis of novel hard/soft ferrite composites particles with improved magnetic properties and exchange coupling. Processing and Application of Ceramics. 2018; 12(3):248-256.
[4] Almessiere MA, Slimani Y, Gungunes H, Sertkol M, Nawaz M, Algarou NA, Baykal A, Ercan I. Tb3+ substituted strontium hexaferrites: structural, magnetic and optical investigation and cation distribution. Journal of Rare Earths. 2020; 38(4):402-410.
[5] Almessiere MA, Slimani Y, Korkmaz AD, Güner S, Maarouf A, Baykal A. Comparative study of sonochemically synthesized Co-Zr and Ni-Zr substituted Sr-hexaferrites: magnetic and structural investigations. Journal of Magnetism and Magnetic Materials. 2020; 497:165996.
[6] Mesdaghi S, Yousefi M,Mahdavian A. The effect of PANI and MWCNT on magnetic and photocatalytic properties of substituted barium hexaferrite nanocomposites. Materials Chemistry and Physics. 2019; 236:121786.
[7] Asghar G, Anis-ur-Rehman M. Structural, dielectric and magnetic properties of Cr–Zn doped strontium hexa-ferrites for high frequency applications. Journal of alloys and compounds. 2012; 526:85-90.
[8] Ashiq MN, Shakoor S, Najam-ul-Haq M, Warsi MF, Ali I, Shakir I. Structural, electrical, dielectric and magnetic properties of Gd-Sn substituted Sr-hexaferrite synthesized by sol–gel combustion method. Journal of Magnetism and Magnetic Materials. 2015; 374:173-178.
[9] Kumar P, Chand P, Joshi A, Luxmi V,Singh V. Rare earth substituted Bi0. 84RE0. 16FeO3 (RE= La, Gd)-an efficient multiferroic photo-catalyst under visible light irradiation. International Journal of Hydrogen Energy. 2020; 45(34):16944-16954.
[10] Pakdel Z, Yousefi M, Hekmati M, Torbati MB. The effect of dopped Al3+-Gd3+-Cr3+ on the chemical structure of M− type strontium hexaferrite and investigation on their photocatalysis properties. Inorganic Chemistry Communications. 2021; 134:108969.
[11] Shlyk L, Vinnik D, Zherebtsov D, Hu Z, Kuo C-Y, Chang C-F, Lin H-J, Yang L-Y, Semisalova A, Perov N. Single crystal growth, structural characteristics and magnetic properties of chromium substituted M-type ferrites. Solid State Sciences. 2015; 50:23-31.
[12] Iorgu A, Maxim F, Matei C, Ferreira LP, Ferreira P, Cruz M, Berger D. Fast synthesis of rare-earth (Pr3+, Sm3+, Eu3+ and Gd3+) doped bismuth ferrite powders with enhanced magnetic properties. Journal of Alloys and Compounds. 2015; 629:62-68.
[13] Ali I, Islam M, Awan M, Ahmad M. Effects of Ga–Cr substitution on structural and magnetic properties of hexaferrite (BaFe12O19) synthesized by sol–gel auto-combustion route. Journal of Alloys and Compounds. 2013; 547:118-125.
[14] Sharma S, Satyapal HK, Kumar SS, Aryan R, Manash A, Kumar V. Effect of Gd3+ substitution on the structural and magnetic properties of barium hexaferrite nanomaterials. Materials Today: Proceedings. 2021; 44:2587-2592.
[15] Almessiere MA, Slimani Y, Tashkandi N, Baykal A, Saraç MF, Trukhanov A, Ercan İ, Belenli İ, Ozçelik B. The effect of Nb substitution on magnetic properties of BaFe12O19 nanohexaferrites. Ceramics International. 2019; 45(2):1691-1697.
[16] Slimani Y, Selmi A, Hannachi E, Almessiere MA, Mumtaz M, Baykal A, Ercan I. Study of tungsten oxide effect on the performance of BaTiO 3 ceramics. Journal of Materials Science: Materials in Electronics. 2019; 30:13509-13518.
[17] López-Ortega A, Lottini E, Fernandez CdJ, Sangregorio C. Exploring the magnetic properties of cobalt-ferrite nanoparticles for the development of a rare-earth-free permanent magnet. Chemistry of materials. 2015; 27(11):4048-4056.
[18] Slimani Y, Baykal A, Amir M, Tashkandi N, Güngüneş H, Guner S, El Sayed H, Aldakheel F, Saleh TA, Manikandan A. Substitution effect of Cr3+ on hyperfine interactions, magnetic and optical properties of Sr-hexaferrites. Ceramics International. 2018; 44(13):15995-16004.
[19] Smail S, Benyoussef M, Taïbi K, Bensemma N, Manoun B, El Marssi M, Lahmar A. Structural, dielectric, electrocaloric and energy storage properties of lead free Ba0. 975La0. 017 (ZrxTi0. 95-x) Sn0. 05O3 (x= 0.05; 0.20) ceramics. Materials Chemistry and Physics. 2020; 252:123462.
[20] Xu M, Zhang J, Wang S, Guo X, Xia H, Wang Y, Zhang S, Huang W, Wu S. Gas sensing properties of SnO2 hollow spheres/polythiophene inorganic–organic hybrids. Sensors and Actuators B: Chemical. 2010; 146(1):8-13.
[21] Afghahi SSS, Jafarian M, Atassi Y, Stergiou CA. Single and double-layer composite microwave absorbers with hexaferrite BaZn0. 6Zr0. 3X0. 3Fe10. 8O19 (X= Ti, Ce, Sn) powders. Materials Chemistry and Physics. 2017; 186(584-591.
[22] Güner S, Almessiere MA, Slimani Y, Baykal A, Ercan I. Microstructure, magnetic and optical properties of Nb3+ and Y3+ ions co-substituted Sr hexaferrites. Ceramics International. 2020; 46(4):4610-4618.
[23] Xie T, Liu C, Xu L, Yang J, Zhou W. Novel heterojunction Bi2O3/SrFe12O19 magnetic photocatalyst with highly enhanced photocatalytic activity. The Journal of Physical Chemistry C. 2013; 117(46):24601-24610.
[24] Yousefi M, Afghahi S, Amini M, Torbati MB. An investigation of structural and magnetic properties of Ce–Nd doped strontium hexaferrite nanoparticles as a microwave absorbent. Materials Chemistry and Physics. 2019; 235:121722.
[25] Dhiman M, Singhal S. Effect of doping of different rare earth (europium, gadolinium, dysprosium and neodymium) metal ions on structural, optical and photocatalytic properties of LaFeO3 perovskites. Journal of Rare Earths. 2019; 37(12):1279-1287.
[26] Ahmad R, Mondal PK. Adsorption and photodegradation of methylene blue by using PAni/TiO2 nanocomposite. Journal of dispersion science and technology. 2012; 33(3):380-386.
