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Synthesis and characterization of TiO2 doped cobalt ferrite nanoparticles via microwave method: Investigation of photocatalytic performance of congo red degradation dye
Surfaces and Interfaces ( IF 6.2 ) Pub Date : 2021-06-24 , DOI: 10.1016/j.surfin.2021.101296
C. Maria Magdalane , G. Maria Assuntha Priyadharsini , K. Kaviyarasu , A. Irudaya Jothi , G. Gnanamani Simiyon

Microwave improved porous CoFe2O4 and TiO2 doped CoFe2O4 nanostructures were designed using L-threonine as a fuel in our current research work. The synthesized nanomaterials were characterised and investigated to determine the photocatalytic degradation of congo red dye on irradiation of visible light. The powder XRD pattern proved that the obtained crystallite size of CoFe2O4 is 44 nm and TiO2 doped CoFe2O4 is 25 nm. It has been observed that the crystalline size is much lower for TiO2 doped CoFe2O4 when compared to the CoFe2O4, which is due to the doping of titania. Furthermore, the SEM images of titania doped CoFe2O4 indicates that the smaller particles are dispersed with a high agglomeration, due to the interfacial surface tension between the titania and cobalt ferrite particles. DRS spectra proved the measured bandgap of the corresponding CoFe2O4 and TiO2 doped CoFe2O4 nanostructures are 3.01 eV and 2.88 eV. The microstructure and the dimension of the synthesized CoFe2O4 and TiO2 doped CoFe2O4 spinel ferrites nanostructures were explored by high resolution transmission electron microscope (HR-TEM). The association of photocatalytic properties of CoFe2O4 and TiO2 doped CoFe2O4 in a solitary particle is the projected advantage of the current work.



中文翻译:

TiO 2掺杂铁氧体钴纳米粒子的微波合成与表征:刚果红降解染料的光催化性能研究

在我们目前的研究工作中,使用 L-苏氨酸作为燃料设计了微波改进的多孔 CoFe 2 O 4和 TiO 2掺杂的 CoFe 2 O 4纳米结构。对合成的纳米材料进行表征和研究,以确定刚果红染料在可见光照射下的光催化降解。粉末XRD图证明获得的CoFe 2 O 4 的微晶尺寸为44nm ,TiO 2掺杂的CoFe 2 O 4为25nm。已经观察到,TiO 2掺杂的 CoFe 2 O 4的晶体尺寸小得多与 CoFe 2 O 4相比,这是由于二氧化钛的掺杂。此外,二氧化钛掺杂的 CoFe 2 O 4的 SEM 图像表明,由于二氧化钛和钴铁氧体颗粒之间的界面表面张力,较小的颗粒以高附聚分散。DRS光谱证明相应的CoFe 2 O 4和TiO 2掺杂的CoFe 2 O 4纳米结构的测量带隙为3.01eV和2.88eV。合成的CoFe 2 O 4和TiO 2掺杂的CoFe 2 O的微观结构和尺寸通过高分辨率透射电子显微镜 (HR-TEM) 探索了4 种尖晶石铁氧体纳米结构。CoFe 2 O 4和掺杂TiO 2 的CoFe 2 O 4在单独粒子中的光催化性能的关联是当前工作的预期优势。

更新日期:2021-06-24
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