Gamal H. Sewify, Mohamed Mokhtar M. Mostafa, Mostafa S. Gouda, Reda. S. Salama, A. A. El-Hallag
{"title":"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","authors":"Gamal H. Sewify, Mohamed Mokhtar M. Mostafa, Mostafa S. Gouda, Reda. S. Salama, A. A. El-Hallag","doi":"10.1007/s10876-025-02856-5","DOIUrl":null,"url":null,"abstract":"<div><p>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 AgFeO<sub>2</sub> (~ 23.2 nm) with increased surface area (110.7 m<sup>2</sup>/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 AgFeO<sub>2</sub> 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<sup>−1</sup>). Under visible light, this composition also yielded the maximum hydrogen evolution rate of 0.475 mmol h<sup>−1</sup> g<sup>−1</sup> 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.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 4","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nickel-Decorated Silver Ferrite Nanocomposites for Enhanced Photodegradation of Rhodamine B and Efficient Hydrogen Production\",\"authors\":\"Gamal H. Sewify, Mohamed Mokhtar M. Mostafa, Mostafa S. Gouda, Reda. S. Salama, A. A. El-Hallag\",\"doi\":\"10.1007/s10876-025-02856-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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 AgFeO<sub>2</sub> (~ 23.2 nm) with increased surface area (110.7 m<sup>2</sup>/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 AgFeO<sub>2</sub> 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<sup>−1</sup>). Under visible light, this composition also yielded the maximum hydrogen evolution rate of 0.475 mmol h<sup>−1</sup> g<sup>−1</sup> 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.</p></div>\",\"PeriodicalId\":618,\"journal\":{\"name\":\"Journal of Cluster Science\",\"volume\":\"36 4\",\"pages\":\"\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-06-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Cluster Science\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10876-025-02856-5\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Cluster Science","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10876-025-02856-5","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Nickel-Decorated Silver Ferrite Nanocomposites for Enhanced Photodegradation of Rhodamine B and Efficient Hydrogen Production
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.
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.