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Improved photocatalytic degradation of rhodamine B under visible light and magnetic properties using microwave combustion grown Ni doped copper ferrite spinel nanoparticles
Solid State Sciences ( IF 3.5 ) Pub Date : 2021-01-14 , DOI: 10.1016/j.solidstatesciences.2021.106542
A. Tony Dhiwahar , S. Maruthamuthu , R. Marnadu , M. Sundararajan , M. Aslam Manthrammel , Mohd Shkir , P. Sakthivel , Vasudeva Reddy Minnam Reddy

Nanoparticles (NPs) of Cu1-xNixFe2O4 (0 ≤ x ≤ 0.5) have been facilely prepared via combustion through microwave technique. X-ray diffraction outcomes confirmed single-cubic phase synthesis of titled material and mean crystallites size and lattice constants were calculated in range of 19.37–22.69 nm and 8.319–8.248 Å, respectively. The XPS study confirms the chemical elements and oxidations states of Cu0.6Ni0.4Fe2O4 NPs. The high-resolutionSEM study reveals spherical NPs with agglomeration and composition of elements in Cu1-xNixFe2O4 (0 ≤ x ≤ 0.5) was confirmed through EDX study. The Kubelka-Munk model was employed to determine the energy gap of Cu1-xNixFe2O4 NPs and noticed to vary from 2.30 to 2.06 eV. Photoluminescence spectra study explained the rate of recombination of electron and hole pairs. The detailed magnetic study was carried out and magnetization of remanence (Mr), coercivity (Hc) & saturation (Ms) values were estimated through recording the hysteresis plots. The magnetic Mr & Ms values are noticed to be enhanced from 5.21 to 11.02 emu/g &17.37–31.37 emu/g with Ni content. Furthermore, the Cu1-xNixFe2O4 (0 ≤ x ≤ 0.5) NPs were studied by means of visible light induced RhB dye degradation and investigates major active species and a probable mechanism for degradation has been conferred. The photocatalytic activity of CuFe2O4 NPs has been improved via Ni doping. Photoluminescence spectra showed the rate of recombination of electron-hole pairs and presence of defects.



中文翻译:

微波燃烧生长的镍掺杂铜铁氧体尖晶石纳米粒子在可见光和磁性下改善罗丹明B的光催化降解

纳米颗粒(NP)的Cu 1- X的Ni X的Fe 2 ö 4(0≤  X  ≤0.5)具有通过微波技术通过燃烧被轻便制备。X射线衍射结果证实了标题材料的单立方相合成,平均晶体尺寸和晶格常数的计算范围分别为19.37-22.69 nm和8.319-8.248Å。XPS研究证实了Cu 0.6 Ni 0.4 Fe 2 O 4 NPs的化学元素和氧化态。高分辨率SEM研究揭示了Cu 1- x Ni x Fe中球形NP的团聚和元素组成2 ø 4(0≤  X  ≤0.5)通过EDX研究证实。使用Kubelka-Munk模型确定Cu 1- x Ni x Fe 2 O 4 NP的能隙,发现其在2.30至2.06 eV之间变化。光致发光光谱研究解释了电子和空穴对的复合速率。进行了详细的磁研究,并通过记录磁滞曲线估算了剩磁(M r),矫顽力(H c)和饱和度(M s)值的磁化强度。磁M r&M s镍含量将其值从5.21提高到11.02 emu / g和17.37–31.37 emu / g。此外,在Cu 1- X的Ni X的Fe 2 ö 4(0≤  X  ≤0.5)的NP是由可见光引起的罗丹明染料的降解,并调查主要活性物质和用于降解的可能机制已被赋予的方法研究。Ni掺杂提高了CuFe 2 O 4 NPs的光催化活性。光致发光光谱显示电子-空穴对的重组速率和缺陷的存在。

更新日期:2021-01-28
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