Specific charge separation of Sn doped MgO nanoparticles for photocatalytic activity under UV light irradiation

Chandrasekar, M.; Subash, M.; Perumal, Veeradasan; Panimalar, S.; Aravindan, S.; Uthrakumar, R.; Inmozhi, C.; Исаев, А. Б.; Muniyasamy, Sudhakar; Raja, A.; Kaviyarasu, K.

doi:10.1016/j.seppur.2022.121189

Cited by 42 publications

(4 citation statements)

References 49 publications

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“…It demonstrates that, 2-theta values from 20 0 to 80 0 purely corroborate the Cd-TiO2 anatase structure with respect to their hkl values. The major peaks 25.4 0 , 38.02 0 , 48.2 0 , 54.3 0 , 55.14 0 , 62.96 0 , 69.05 0 , 70.7 0 , and 75.53 0 with corresponding hkl values (101), (004), ( 200), ( 105), ( 211), ( 204), (216) (220), and (215) closely matches with the ICSD 98-007-6028 and purely matches with previously published articles [40][41]. This record proves that synthesised Cd-TiO 2 material was successfully synthesised by sol-gel followed hydrothermal process.…”

Section: Xrd Analysissupporting

confidence: 79%

“…Figure 3 of the above graphs depicts the results obtained from the FT-IR analysis of the Cd-TiO 2 . According to previously reported data [41], its intense peaks were recorded from 400cm − 1 to 800cm − 1 , while in our material the peaks were largely overlapped and it's di cult to differentiate the individual peaks. While peaks 3200-3600cm − 1 corresponds to O-H stretching vibrations and 2900cm − 1 relates to O-H stretching vibrations of dimer molecules present as a moisture content in the material characterization.…”

Section: Ft-ir Analysismentioning

confidence: 43%

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Cadmium-doped Titanium Dioxide Material for Electrochemical Sensing of CAP in Diverse Real-World Samples: A DFT Analysis

Ravikumar,

Subbareddy,

Shivamurthy

et al. 2024

Preprint

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The world is currently grappling with a significant challenge, marked by environmental pollution, amidst the abundance of energy and opportunities. Nevertheless, to overcome such adverse effects, scientific methodologies must be adapted, and among those, electrochemical sensors have emerged as a promising tool for the primary detection of various pollutants in real samples. Herein, we have developed the distinctive type of electrochemical sensor with Cd doped TiO2 as sensor material for the detection of a nitroaromatic contaminant, chloramphenicol (CAP). Cd-TiO2 was synthesised by the sol-gel, followed by a hydrothermal process to obtain the Cd-doped TiO2 sensor material. Further, it underwent various characterization techniques like XRD, FT-IR, HR-TEM, and EIS. Moreover, to determine the detection facility, CV and LSV techniques were deployed. Proven results with a remarkable low limit of detection 3.5 nM and a linear concentration range were found to be 1 µm to 25 µm. Real sample analysis was conducted with different samples: Honey and coconut water. Additionally, DFT studies were conducted to verify the HOMO-LUMO of CAP and electrostatic potential. The results obtained were accurate and could be chosen as best sensor material for the detection of CAP in real-world analysis.

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Section: Xrd Analysissupporting

confidence: 79%

Section: Ft-ir Analysismentioning

confidence: 43%

Cadmium-doped Titanium Dioxide Material for Electrochemical Sensing of CAP in Diverse Real-World Samples: A DFT Analysis

Ravikumar,

Subbareddy,

Shivamurthy

et al. 2024

Preprint

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“…On the surface of NiO‐doped Co nanoparticles, the electrons in the conduction band interact with adsorbed oxygen (O 2 ) molecules, leading to the production of superoxide radicals (O 2 − ). Instead of hydroxyl radicals (OH − ), reactive hydroxyl radicals (OH • ) can be formed by the interaction of these excited electrons with water molecules [54–57]. MB is degraded into smaller organic molecules due to the hydroxyl radicals generated in response to light exposure.…”

Section: Resultsmentioning

confidence: 99%

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

Venkatachalapathy,

Sambathkumar,

Rajasaravanan

et al. 2024

Luminescence

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In this study, we synthesize nanostructured nickel oxide (NiO) and doped cobalt (Co) by combining nickel(II) chloride hexahydrate (NiCl2.6H2O) and sodium hydroxide (NaOH) as initial substances. We analyzed the characteristics of the product nanostructures, including their structure, optical properties, and magnetic properties, using various techniques such as x‐ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet absorption spectroscopy (UV–Vis), Fourier transform infrared (FTIR) spectroscopy, and vibrating sample magnetometers (VSM). The NiO nanoparticles doped with Co showed photocatalytic activity in degrading methylene blue (MB) dye in aqueous solutions. We calculated the degradation efficiencies by analyzing the UV–Vis absorption spectra at the dye's absorption wavelength of 664 nm. It was observed that the NiO‐doped Co nanoparticles facilitated enhanced recombination and migration of active elements, which led to more effective degradation of organic dyes during photocatalysis. We also assessed the electrochemical properties of the materials using cyclic voltammetry (CV) and impedance spectroscopy in a 1 mol% NaOH solution. The NiO‐modified electrode exhibited poor voltammogram performance due to insufficient contact between nanoparticles and the electrolyte solution. In contrast, the uncapped NiO's oxidation and reduction cyclic voltammograms displayed redox peaks at 0.36 and 0.30 V, respectively.

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“…This band facilitates visible light‐induced electron injection from Au−Ag BMNPs to the conduction band of TiO 2 , promoting charge separation (Pathway 1, Scheme 1). [31,32] Even though the excitation probability of TiO 2 is minimal, electron transfer to the Au−Ag BMNPs absorbed on its surface is a viable pathway (Pathway 2, Scheme 1) when excited in the 200–380 nm wavelength region. The synergistic effect of these dual electron‐transfer pathways enhances the photo‐induced charge separation process that establishes Au−Ag@TiO 2 nanocomposite as a highly efficient photocatalyst for both organic and inorganic reactions [33]…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Au‐Ag@TiO₂ Nanocomposite for Photocatalytic Oxidation of Substituted Benzyl Alcohols

Hazarika,

Ahmed

2024

ChemistrySelect

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The scaling‐up of methodologies in the oxidation of alcohols to carbonyl compounds faced widespread hindrance in industries due to large‐scale use of toxic and expensive metal oxidants. Novel, cost‐effective and eco‐friendly approaches need to be developed to address these problems. Bimetallic nanoparticles (BMNPs) show synergistic effects at atomic level, which makes them excellent catalysts for organic transformations. Transition metal nanocomposite with unique physicochemical properties and high surface area offers a promising alternative to traditional catalysts. Herein, an environment‐friendly methodology was adopted for the synthesis of Au−Ag BMNPs using phenolic‐rich Ocimum basilicum (L.) leaf extract, which was then incorporated into TiO2 matrix for the synthesis of plasmonic Au−Ag@TiO2 nanocomposite. The formation of the nanocomposite was confirmed through analytical characterizations, such as UV–Vis. DRS, FT‐IR, PL, SEM, TEM and XRD. The nanocomposite exhibited excellent catalytic activity in the selective oxidation of primary and secondary alcohols in aqueous media using H2O2 as an oxidant under visible light irradiation at room temperature. The nanocomposite also demonstrated good reusability of 84 % in the fifth cycle, which established its promising candidature for wide‐scale applications. This work holds significant relevance for industries dealing with pharmaceuticals and personal care products, and thus, offers sustainable solution for organic transformations.

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Specific charge separation of Sn doped MgO nanoparticles for photocatalytic activity under UV light irradiation

Cited by 42 publications

References 49 publications

Cadmium-doped Titanium Dioxide Material for Electrochemical Sensing of CAP in Diverse Real-World Samples: A DFT Analysis

Cadmium-doped Titanium Dioxide Material for Electrochemical Sensing of CAP in Diverse Real-World Samples: A DFT Analysis

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

Green Synthesis of Au‐Ag@TiO₂ Nanocomposite for Photocatalytic Oxidation of Substituted Benzyl Alcohols

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Specific charge separation of Sn doped MgO nanoparticles for photocatalytic activity under UV light irradiation

Cited by 42 publications

References 49 publications

Cadmium-doped Titanium Dioxide Material for Electrochemical Sensing of CAP in Diverse Real-World Samples: A DFT Analysis

Cadmium-doped Titanium Dioxide Material for Electrochemical Sensing of CAP in Diverse Real-World Samples: A DFT Analysis

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

Green Synthesis of Au‐Ag@TiO2 Nanocomposite for Photocatalytic Oxidation of Substituted Benzyl Alcohols

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Green Synthesis of Au‐Ag@TiO₂ Nanocomposite for Photocatalytic Oxidation of Substituted Benzyl Alcohols