Facile Fabrication of PANI/Fe2.85Ni0.15O4 Nanocomposites and Their Application for the Effective Degradation of Rhodamine B Dye

IF 2.6 4区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Magnetochemistry Pub Date : 2023-07-29 DOI:10.3390/magnetochemistry9080195
D. H. Manh, T. Thi, N. T. N. Anh, V. H. Ky, Nguyen Manh Nghia, T. D. Thanh
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Abstract

Nanocomposites of polyaniline (PANI)/Fe2.85Ni0.15O4 (PFN) were successfully prepared using the co-precipitation method combined with an in-situ polymerization process. The FN and PFN nanocatalysts were characterized using various methods for the photocatalytic degradation of Rhodamine B (RhB). The XRD, Raman, TEM, and DTA-DTG analyses suggest that the FN nanoparticles (NPs) were effectively coated by PANI and that there were interactions between FN and PANI. Magnetic measurements indicated that PFN nanocomposites exhibited good superparamagnetic behavior and high saturation magnetization (39.5–57.6 emu/g), which are suitable for separating photocatalysts from solution for reuse. Adsorption-desorption analysis showed that the specific surface area of PFN was higher than that of FN. The UV-vis absorption spectra of FN and PFN nanocomposites exhibited strong absorption of visible light, attributed to the doping of Ni, which resulted in the reduction of the band-gap energy (Eg) of Fe3O4 to 2.4 eV. PFN nanocomposites with different mass ratios of PANI demonstrated superior photocatalytic activity compared to FN NPs. Furthermore, it was observed that PFN with a 10% mass ratio of PANI exhibited the highest RhB degradation efficiency, achieving a rate of approximately 98% after 300 min of irradiation. Finally, the possible photocatalytic degradation mechanisms of the PFN nanocomposites on RhB were discussed. PFN photocatalysts with good photocatalytic activity, inexpensive materials, and easy preparation could be potential candidates for wastewater purification applications.
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PANI/Fe2.85Ni0.15O4纳米复合材料的制备及其在罗丹明B染料有效降解中的应用
采用共沉淀法结合原位聚合工艺成功制备了聚苯胺(PANI)/Fe2.85Ni0.15O4(PFN)纳米复合材料。采用多种光催化降解罗丹明B(RhB)的方法对FN和PFN纳米催化剂进行了表征。XRD、Raman、TEM和DTA-DTG分析表明,聚苯胺有效地包覆了FN纳米颗粒,并且FN和聚苯胺之间存在相互作用。磁性测量表明,PFN纳米复合材料表现出良好的超顺磁行为和高饱和磁化强度(39.5–57.6 emu/g),适用于将光催化剂从溶液中分离出来重复使用。吸附-解吸分析表明,PFN的比表面积高于FN。FN和PFN纳米复合材料的UV-vis吸收光谱表现出对可见光的强吸收,这归因于Ni的掺杂,这导致Fe3O4的带隙能量(Eg)降低到2.4eV。与FN NP相比,具有不同PANI质量比的PFN纳米复合材料表现出优异的光催化活性。此外,观察到PANI质量比为10%的PFN表现出最高的RhB降解效率,在照射300分钟后达到约98%的降解率。最后,讨论了PFN纳米复合材料在RhB上的光催化降解机理。PFN光催化剂具有良好的光催化活性、廉价的材料和易于制备的优点,是废水净化应用的潜在候选者。
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来源期刊
Magnetochemistry
Magnetochemistry Chemistry-Chemistry (miscellaneous)
CiteScore
3.90
自引率
11.10%
发文量
145
审稿时长
11 weeks
期刊介绍: Magnetochemistry (ISSN 2312-7481) is a unique international, scientific open access journal on molecular magnetism, the relationship between chemical structure and magnetism and magnetic materials. Magnetochemistry publishes research articles, short communications and reviews. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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