Metal Oxide Nanostructures (MONs) as Photocatalysts for Ciprofloxacin Degradation

Pascariu, Petronela; Gherasim, Carmen; Airinei, Anton

doi:10.3390/ijms24119564

Cited by 15 publications

(4 citation statements)

References 143 publications

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“…Enhancing volume-to-surface ratios and the impact of quantum properties on particle size are two ways that nanomaterials can change their physical characteristics [90]. Likewise, nanostructures differ greatly from conventional materials in terms of their magnetic, optical, and electrical properties.…”

Section: Nanostructuringmentioning

confidence: 99%

Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review

Mohd Raub,

Bahru,

Mohamed

et al. 2024

Nanotechnology

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Nanostructured metal oxide semiconductors have emerged as promising nanoscale photocatalysts due to their excellent photosensitivity, chemical stability, non-toxicity, and biocompatibility. Enhancing the photocatalytic activity of metal oxide is critical in improving their efficiency in radical ion production upon optical exposure for various applications. Therefore, this review paper provides an in-depth analysis of the photocatalytic activity of nanostructured metal oxides, including the photocatalytic mechanism, factors affecting the photocatalytic efficiency, and approaches taken to boost the photocatalytic performance through structure or material modifications. This paper also highlights an overview of the recent applications and discusses the recent advancement of ZnO-based nanocomposite as a promising photocatalytic material for environmental remediation, energy conversion, and biomedical applications. 

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Section: Nanostructuringmentioning

confidence: 99%

Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review

Mohd Raub,

Bahru,

Mohamed

et al. 2024

Nanotechnology

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“…Certain crystal structures can support both ferromagnetic ordering of electron spins and efficient charge carrier generation for photocatalysis. Defects, such as oxygen vacancies or dopants, can enhance both magnetic properties and photocatalytic performance by creating additional electronic states for carriers to populate [238].…”

Section: Correlation Between Magnetic and Photocatalytic Propertiesmentioning

confidence: 99%

Introduction and Advancements in Room-Temperature Ferromagnetic Metal Oxide Semiconductors for Enhanced Photocatalytic Performance

Sundaram,

Muniyandi,

Ethiraj

et al. 2024

ChemEngineering

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Recent advancements in the field of room-temperature ferromagnetic metal oxide semiconductors (RTFMOS) have revealed their promising potential for enhancing photocatalytic performance. This review delves into the combined investigation of the photocatalytic and ferromagnetic properties at room temperature, with a particular focus on metal oxides like TiO2, which have emerged as pivotal materials in the fields of magnetism and environmental remediation. Despite extensive research efforts, the precise mechanism governing the interplay between ferromagnetism and photocatalysis in these materials remains only partially understood. Several crucial factors contributing to magnetism, such as oxygen vacancies and various metal dopants, have been identified. Numerous studies have highlighted the significant role of these factors in driving room-temperature ferromagnetism and photocatalytic activity in wide-bandgap metal oxides. However, establishing a direct correlation between magnetism, oxygen vacancies, dopant concentration, and photocatalysis has posed significant challenges. These RTFMOS hold immense potential to significantly boost photocatalytic efficiency, offering promising solutions for diverse environmental- and energy-related applications, including water purification, air pollution control, and solar energy conversion. This review aims to offer a comprehensive overview of recent advancements in understanding the magnetism and photocatalytic behavior of metal oxides. By synthesizing the latest findings, this study sheds light on the considerable promise of RTFMOS as effective photocatalysts, thus contributing to advancements in environmental remediation and related fields.

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“…Notably, the utilization of α-FeOOH NPs for wastewater purification and as secondary battery electrodes holds immense significance in realizing future sustainable development goals. This is primarily due to their ability, non-toxic nature, stability, electrical conductivity, and photocatalytic activity under visible-light exposure [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic and Cathode Active Abilities of Ni-Substituted α-FeOOH Nanoparticles

Ibrahim,

Shiraishi,

Homonnay

et al. 2023

IJMS

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The present study investigates the relationship between the local structure, photocatalytic ability, and cathode performances in sodium-ion batteries (SIBs) and lithium-ion batteries (LIBs) using Ni-substituted goethite nanoparticles (NixFe1−xOOH NPs) with a range of ‘x’ values from 0 to 0.5. The structural characterization was performed applying various techniques, including X-ray diffractometry (XRD); thermogravimetry differential thermal analysis (TG-DTA); Fourier transform infrared spectroscopy (FT-IR); X-ray absorption spectroscopy (XANES/EXAFS), both measured at room temperature (RT); 57Fe Mössbauer spectroscopy recorded at RT and low temperatures (LT) from 20 K to 300 K; Brunauer–Emmett–Teller surface area measurement (BET), and diffuse reflectance spectroscopy (DRS). In addition, the electrical properties of NixFe1−xOOH NPs were evaluated by solid-state impedance spectroscopy (SS-IS). XRD showed the presence of goethite as the only crystalline phase in prepared samples with x ≤ 0.20, and goethite and α-Ni(OH)2 in the samples with x > 0.20. The sample with x = 0.10 (Ni10) showed the highest photo-Fenton ability with a first-order rate constant value (k) of 15.8 × 10−3 min−1. The 57Fe Mössbauer spectrum of Ni0, measured at RT, displayed a sextet corresponding to goethite, with an isomer shift (δ) of 0.36 mm s−1 and a hyperfine magnetic distribution (Bhf) of 32.95 T. Moreover, the DC conductivity decreased from 5.52 × 10−10 to 5.30 × 10−12 (Ω cm)–1 with ‘x’ increasing from 0.10 to 0.50. Ni20 showed the highest initial discharge capacity of 223 mAh g−1, attributed to its largest specific surface area of 174.0 m2 g−1. In conclusion, NixFe1−xOOH NPs can be effectively utilized as visible-light-activated catalysts and active cathode materials in secondary batteries.

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Metal Oxide Nanostructures (MONs) as Photocatalysts for Ciprofloxacin Degradation

Cited by 15 publications

References 143 publications

Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review

Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review

Introduction and Advancements in Room-Temperature Ferromagnetic Metal Oxide Semiconductors for Enhanced Photocatalytic Performance

Photocatalytic and Cathode Active Abilities of Ni-Substituted α-FeOOH Nanoparticles

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