氧化锌和铁酸镍纳米复合材料作为结晶紫染料降解的高效光催化剂,Solid State Communications

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氧化锌和铁酸镍纳米复合材料作为结晶紫染料降解的高效光催化剂
Solid State Communications ( IF 2.1 ) Pub Date : 2024-04-17 , DOI: 10.1016/j.ssc.2024.115517
Komal , R.C. Srivastava , Chandra Shekhar Joshi , Harendra Kumar Verma

在本研究中，研究了 NiFeO/ZnO 纳米复合材料对结晶紫染料降解的光催化活性。采用微波辅助绿色合成方法合成ZnO纳米粒子(NPs)。采用溶胶-凝胶自燃烧法合成 NiFeO (NiF) NPs。采用固相反应法合成了NiF/ZnO纳米复合材料。通过 X 射线衍射研究证实了结构相。 ZnO 纳米颗粒呈纤锌矿六方结构，而 NiF 呈立方尖晶石结构。在两个相中均观察到 NiF/ZnO 纳米复合材料。 NiF、ZnO 和 NiF/ZnO 纳米复合材料的微晶尺寸分别为 31 1、18 2 和 (95 1)/(98 1) nm。通过紫外-可见光谱测定，NiF、ZnO 和 NiF/ZnO 纳米复合材料的光学带隙分别为 1.67 0.03、2.70 0.08 和 1.70 0.05 eV。 NiF 的红外研究显示出四面体和八面体谱带，而 ZnO 则观察到特征谱带。 NiF/ZnO 纳米复合材料的 FESEM 显微照片显示形成了团聚的球形颗粒和极少量的棒状颗粒，表明 NiF/ZnO 纳米复合材料的形成。研究了NiF、ZnO和NiF/ZnO纳米复合材料对结晶紫染料降解的光催化活性。结果发现，NiF、ZnO和NiF/ZnO纳米复合材料在60、120和50分钟内的降解率分别为89%、90.46%和87.21%。

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Zinc oxide and nickel ferrite nanocomposite as an efficient photocatalyst for crystal violet dye degradation

In the present study, photocatalytic activity of NiFeO/ZnO nanocomposite was studied for the degradation of crystal violet dye. Microwave assisted green synthesis method was used for the synthesis of ZnO nanoparticles (NPs). Sol-gel auto-combustion method was used to synthesize NiFeO (NiF) NPs. NiF/ZnO nanocomposite was synthesized through solid-state reaction method. Structural phase was confirmed through X-ray diffraction studies. ZnO NPs were found in wurtzite hexagonal structure whereas cubic spinel structure was found for NiF. NiF/ZnO nanocomposite was observed in both phases. The crystallite size was found to be 31 1, 18 2 and (95 1)/(98 1) nm, for NiF, ZnO and NiF/ZnO nanocomposite, respectively. The optical band gap was determined through UV–Visible spectroscopy and is found to be 1.67 0.03, 2.70 0.08 and 1.70 0.05 eV for NiF, ZnO and NiF/ZnO nanocomposite, respectively. Infrared study of NiF showed the tetrahedral and octahedral band whereas for ZnO the characteristic band was observed. FESEM micrographs of NiF/ZnO nanocomposite showed the formation of agglomerated spherical particles and very less number of rod-like grains indicating the formation of NiF/ZnO nanocomposite. The photocatalytic activity of NiF, ZnO and NiF/ZnO nanocomposite for the degradation of crystal violet dye was studied. It was found that NiF, ZnO and NiF/ZnO nanocomposite showed 89 %, 90.46 % and 87.21 % degradation rate in 60, 120 and 50 min respectively.

更新日期：2024-04-17

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