Role of mode of heating on the synthesis of nanocrystalline zinc ferrite

Abstract

In the present work, microwave-assisted coprecipitation route was used for synthesis of nanocrystalline zinc ferrite and results were compared with conventionally prepared zinc ferrite. Synthesis conditions were kept uniform in both cases, except that the mode of heating was changed. The effects of mode of heating on the material properties were studied systematically. Microstructures of both samples were studied by scanning electron microscopy and transmission electron microscopy and the particle size was found to be in the range of 3-4 nm. Particle size distribution in microwaveprocessed MS-ZnFe 2 O 4 is found to be highly uniform compared to conventionally processed samples (CS-ZnFe 2 O 4 ). XRD data confirmed the presence of single-phase face-centered cubic structure for both the samples. The XRD data fitted well with Reitveld refinement. The functional groups were analyzed by FT-IR. Local distortions in the structures were studied by FT-Raman spectra of zinc ferrites at room temperature. This study concludes that the microwaveassisted synthesis route reduced the time of reaction by around 23 h and developed uniformly distributed fine-scaled particles. This method has high potential to synthesize other ferrite materials also.

Bioactivity evaluation of nanosized ZnFe2O4 fabricated by hydrothermal method

“…By plotting [F(R) • hν] 2 versus photon energy hν, through a linear adjustment of the straightest region of the curve, the bandgap value is obtained at the point where [F(R) • hν] 2 = 0 [57]. Figure 5a shows an E gap value of approximately 2.1 eV obtained via the Kubelka-Munk method for the ZnFe 2 O 4 nanoparticles, which agrees with the literature [58]. For a perfect crystal, E gap values of ∼2.5 eV are found [59].…”

The Synergistic Effect of Zinc Ferrite Nanoparticles Uniformly Deposited on Silver Nanowires for the Biofilm Inhibition of Candida albicans

“…The pure ZnFe 2 O 4 NPs exhibit characteristic diffraction peaks at 29.75°, 35.05°, 42.65°, 53.05°, 56.5°, and 62.05°, which are indexed to the (220), (311), (400), (422), (511), and (440) planes of ZnFe 2 O 4 crystal with cubic spinel structure (JCPDS card No. 82-1049) [36]. The pure AgNWs show sharp diffraction peaks, particularly at 37.95° and 44.15°, which correspond to the (111) and (200) planes of FCC Ag crystal (JCPDS card No.…”

Investigation of ZnFe2O4 Films Depending on the Complex Agent Ratio

“…Filmlerin Raman spektrumları genel olarak birbirine benzese de pH=9.6 örnekleri için 1100 cm -1 bölgesinde değişim gözlenmiştir. Çinko ferrit malzemelerinin Raman spektrumunda genellikle A 1g + E g + 3F 2g modları bulunur (Chaudhari, 2016). 600-800 cm −1 bögesindeki A 1g modları şunlardır; 410-550 cm −1 bölgesi F 2g(3) modlarına ve 260-380 cm −1 F 2g(2) modlarına karşılık gelir.…”