BaTixFe12-(4/3)xO19六方纳米粒子的光谱分析、超电容、光催化

Ghoneim Amina Ibrahim
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摘要

显然,BaTixFe12-(4/3)xO19六方纳米晶体是水净化中光催化剂的优秀候选人,也可以用作超级电容器和储能应用的电极材料。采用共沉淀法合成了具有磁铅石结构的m型六方纳米粒子(BaTixFe12-(4/3)xO19, 0≤x≤1),并用XRD、FT-IR、拉曼、光致发光和UV-VL等技术对其进行了研究。XRD和FT-IR证实了结构,拉曼光谱显示了12个表征峰。光致发光发射光谱在448和501 nm处有两个峰。可见,BaTi0.75Fe11O19纳米晶作为m型六方铁氧体的一种,对降解有机染料(如;水晶紫、甲基橙等。此外;这些纳米晶体具有优异的电化学性能;这反过来又为超级电容器的应用引入了这些材料。由此可见,BaTi0.75Fe11O19纳米晶体对结晶紫(CV)染料(1 × 10-5 M)脱色的光催化活性优异,光催化效率可达约85%。另一方面;BaTi0.75Fe11O19纳米粒子在50 mV/s下的比电容为1858 mF/g。本研究介绍了BaTi0.75Fe11O19纳米颗粒作为超级电容和储能电极材料的应用前景。
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Optical spectroscopic analysis, supercapacitance, photocatalysis of BaTixFe12-(4/3)xO19 hexagonal nanoparticles
Obviously, BaTixFe12-(4/3)xO19 Hexagonal nanocrystals are excellent candidates as photocatalysts in water purification, as well as using them as electrode materials for supercapacitors and energy storage applications. M-Type Hexagonal nanoparticles (BaTixFe12-(4/3)xO19, 0 ≤ x ≤ 1) with the magneto-plumbite structure were formerly synthesized by co-precipitation procedure and investigated by several techniques such as XRD, FT-IR, Raman, Photoluminescence and UV-VL. XRD and FT-IR confirmed the structure, and Raman spectra showed 12 characterizing summits. Photoluminescence emission spectra indicated two summits at 448 and 501 nm. Optical UV-VL spectroscopic analysis parameters showed dependence on λ and x. Obviously, BaTi0.75Fe11O19 nanocrystals as a sort of M-Type Hexagonal Ferrites showed excellent Photocatalytic activity on the Degradation of Organic Dyes like; Crystal Violet, Methyl Orange, … etc. Furthermore; these nanocrystals possess excellent electrochemical performance; which in turn introduces these materials for Supercapacitors Applications. Thus, the Photo-catalytic activity of BaTi0.75Fe11O19 nanocrystals for the decolorization of Crystal Violet (CV) dye (1 × 10-5 M) illuminated excellent photocatalytic efficiency reaching ≈ 85%. On the other hand; BaTi0.75Fe11O19 nanoparticles exhibited a specific capacitance of 1858 mF/g at 50 mV/s. The current study introduces promising applications of BaTi0.75Fe11O19 nanoparticles as electrode materials for super capacitance and energy storage.
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