Nickel-Decorated Silver Ferrite Nanocomposites for Enhanced Photodegradation of Rhodamine B and Efficient Hydrogen Production

IF 3.6 4区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Gamal H. Sewify, Mohamed Mokhtar M. Mostafa, Mostafa S. Gouda, Reda. S. Salama, A. A. El-Hallag
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Abstract

Global challenges in water pollution and sustainable energy demand innovative solutions. This study presents a novel nickel-decorated silver ferrite (Ni-AGF) nanocomposite synthesized via a sol-gel method. The composite's structural, morphological, and compositional features were analyzed using techniques including TEM, SEM, BET, FTIR, and UV-Vis spectroscopy. Structural and morphological analyses revealed uniform dispersion of Ni nanoparticles (~ 4.3 nm) on AgFeO2 (~ 23.2 nm) with increased surface area (110.7 m2/g) at 6 wt% Ni loading. SEM and EDX confirmed the presence of Ni, Ag, Fe, and O elements, and TEM images suggested uniform dispersion of Ni nanoparticles on the AgFeO2 surface. While, UV-VIS spectroscopy allowed calculation of the band gap energies, showing that the nickel nanoparticles influence the composite's optical properties. Photocatalytic experiments demonstrated that the 6 wt% Ni-AGF achieved a 97% degradation of Rhodamine B within 90 minutes and exhibited the highest first-order rate constant (0.0178 min−1). Under visible light, this composition also yielded the maximum hydrogen evolution rate of 0.475 mmol h−1 g−1 using ethylene glycol as a sacrificial agent. The catalyst retained 88.1% of its activity after five cycles, enabled by its magnetic recoverability. These findings highlight the potential of Ni-AGF as a cost-effective, dual-functional material for wastewater treatment and sustainable energy applications.

镍修饰银铁氧体纳米复合材料增强罗丹明B光降解和高效制氢
水污染和可持续能源方面的全球挑战需要创新的解决方案。采用溶胶-凝胶法制备了一种新型镍修饰银铁氧体(Ni-AGF)纳米复合材料。利用TEM、SEM、BET、FTIR、UV-Vis等技术分析了复合材料的结构、形态和组成特征。结构和形态分析表明,Ni纳米粒子(~ 4.3 nm)均匀分散在AgFeO2 (~ 23.2 nm)上,在6 wt% Ni负载下,表面积增加(110.7 m2/g)。SEM和EDX证实了Ni、Ag、Fe和O元素的存在,TEM图像表明Ni纳米颗粒在AgFeO2表面均匀分散。同时,紫外可见光谱允许计算带隙能量,表明镍纳米颗粒影响复合材料的光学性质。光催化实验表明,6 wt% Ni-AGF在90分钟内对罗丹明B的降解率达到97%,并具有最高的一级速率常数(0.0178 min−1)。在可见光下,以乙二醇为牺牲剂,该组合物的最大析氢速率为0.475 mmol h−1 g−1。由于其磁性可恢复性,该催化剂在5次循环后仍保持了88.1%的活性。这些发现突出了Ni-AGF作为一种具有成本效益的双功能材料在废水处理和可持续能源应用方面的潜力。
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来源期刊
Journal of Cluster Science
Journal of Cluster Science 化学-无机化学与核化学
CiteScore
6.70
自引率
0.00%
发文量
166
审稿时长
3 months
期刊介绍: The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.
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