Effect of annealing time on optical properties of CdS QDs containing glasses and their application for degradation of methyl orange dye

Janbandhu, S.Y.; Munishwar, S.R.; Sukhadeve, G.K.; Gedam, R.S.

doi:10.1016/j.matchar.2019.04.027

Cited by 33 publications

(10 citation statements)

References 44 publications

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“…PL signal as compared to pure TiO 2 [51][52][53] . The retardation in recombination of electron and hole implies that the huge number of electrons and holes will engage in photochemical reaction and accelerate the photocatalytic activity of doped samples [54] .…”

Section: Chemistryselectmentioning

confidence: 99%

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

et al. 2021

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TiO2 nanoparticles doped with Ag have been prepared by Sol‐gel route. Prepared materials were characterized by various characterization techniques. The phases of prepared samples were confirmed by X‐ray diffraction (XRD) and Raman analysis and the single phase anatase structure of TiO2 was identified. Spherical shape nanoparticles were observed in High‐resolution transmission electron microscopy (HR‐TEM). Optical absorption and Photoluminsescence (PL) measurements were carried out to find the energy band gap and recombination rate of charge carriers respectively. The photocatalytic activity of prepared samples was tested on Indigo Carmine (IC) dye as an organic pollutant under visible light irradiation. Improvement in degradation efficiency was observed with an increase in Ag concentration. Degree of mineralization of IC‐dye after photocatalytic activity was studied by total oraganic carbon (TOC) analysis.

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Section: Chemistryselectmentioning

confidence: 99%

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

et al. 2021

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“…−2 [29]. The lower PL intensity for sample p1_350 due to decrease in recombination of charge carriers results in improvement of charge separation [32].…”

Section: Pl Spectra Of Tio2mentioning

confidence: 98%

“…It is revived that the materials having less recombination rate of electron and hole shows high photocatalytic activity [32]. Since p1_350 shows low PL intensity among all samples, this sample was chosen to degrade the IC dye under visible light irradiation.…”

Section: Degradation Measurement Of Ic Dyementioning

confidence: 99%

Investigation of photocatalytic activity of TiO2 nanoparticles synthesized by sol–gel technique

et al. 2021

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Anatase phase TiO2 nanoparticles were synthesized by sol-gel method using titanium(IV) butoxide as a starting material. The pH of solution was maintained by adding HNO3 and NaOH.The obtained powder was heat treated at 350̊ C for 2 hours. The XRD study shows that the crystalline size and crystalinity of samples increases with pH of solution. Raman spectra confirm the dominance of anatase phase of TiO2. Morphology study of samples was done by scanning electron microscope (SEM). The size of prepared samples was calculated by XRD and confirmed by TEM analysis. The energy band gap was calculated by optical absorption spectra and it was found to decrease by increasing pH of the solution. The photodegration activity of IC dye under visible light irradiation was carried out by synthesized TiO2 Nanoparticles.

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“…where α -absorption coe cient, hν -energy of photon, A -constant, E g -optical energy band gap, n -depends on the transition (n = 1/2, 2 corresponding to allowed direct, allowed indirect transitions respectively) (Janbandhu et al 2019b).…”

Section: ): αHv = a (Hν -E G ) N (3)mentioning

confidence: 99%

Visible light assisted surface plasmon resonance triggered Ag/ZnO nanocomposites: synthesis and performance towards degradation of indigo carmine dye

Kumar

Janbandhu

Sukhadeve

et al. 2022

Environ Sci Pollut Res

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Water pollution caused by organic compounds, generated from different industries has gained attention worldwide today. In this regard, signi cant efforts have been made for suitable dye degradation technology. Zinc oxide (ZnO) based photocatalysts are considered novel materials to degrade organic e uents in contaminated water. The facile synthesis of Ag/ZnO nanocomposites and its application for the enhanced degradation of Indigo carmine (IC) dye under visible light irradiation is reported in this paper. The prepared photocatalysts were characterized using various analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), FTIR, Raman, Impedance study, UV-Vis, and photoluminescence (PL). Prepared Ag/ZnO nanocomposites were tested for degradation of IC dye in visible light. The degradation e ciency of IC dye was found to be 95.71% in 120 min, with a rate constant of 0.01957 min − 1 . This improved photocatalytic activity of Ag/ZnO nanocomposites was mainly due to the absorption of visible light caused by surface plasmon resonance (SPR) derived from Ag nanoparticles (NPs) and electronhole separation. Radical trapping experiments suggest that holes (h + ), and superoxide radical (O 2 • − ) are the key factors in photocatalytic IC dye degradation.

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Effect of annealing time on optical properties of CdS QDs containing glasses and their application for degradation of methyl orange dye

Cited by 33 publications

References 44 publications

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Investigation of photocatalytic activity of TiO2 nanoparticles synthesized by sol–gel technique

Visible light assisted surface plasmon resonance triggered Ag/ZnO nanocomposites: synthesis and performance towards degradation of indigo carmine dye

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Effect of annealing time on optical properties of CdS QDs containing glasses and their application for degradation of methyl orange dye

Cited by 33 publications

References 44 publications

Ag‐Doped TiO2Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Ag‐Doped TiO2Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Investigation of photocatalytic activity of TiO2 nanoparticles synthesized by sol–gel technique

Visible light assisted surface plasmon resonance triggered Ag/ZnO nanocomposites: synthesis and performance towards degradation of indigo carmine dye

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Product

Resources

About

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light