Intensification of the Orange II and Black 5 degradation by sonophotocatalysis using Ag-graphene oxide/TiO2 systems

May-Lozano, M.; López‐Medina, Ricardo; Escamilla, V. Mendoza; Rivadeneyra-Romero, Gabriela; Alonzo-Garcia, A.; Morales-Mora, M.; González‐Díaz, María Ortencia; Martinez-Degadillo, S.A.

doi:10.1016/j.cep.2020.108175

Cited by 22 publications

(7 citation statements)

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“…Another possible reason was related to the localized surface plasmon resonance effect in Ag nanoparticles, which enabled sonoluminescence light absorption by localized surface plasmon excitation [ 20 ]. This would generate electrons and occupy energy levels above the Fermi level of the Ag, thereby restraining the recombination of generated electron-hole pairs onto the surface of TiO 2 [ 15 ]. Thus, both electrons from surface plasmon resonance excited Ag nanoparticles and the electrons transferred from TiO 2 to Ag might be captured by the adsorbed O 2 on the catalyst surface to form radical superoxide anions.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, Ag is generally cheap and exhibits low toxicity and high antibacterial ability than compared to gold and platinum [ 14 ]. The incorporation of an appropriate amount of Ag can reduce the band gap energy of TiO 2 and inhibit the recombination of electron-hole pairs by trapping the electrons due to the prominent surface plasmon resonance [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

et al. 2021

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In this study, a novel cellulose/Ag/TiO2 nanocomposite was successfully synthesized via the hydrothermal method. The cellulose extracted from oil palm empty fruit bunch (OPEFB) could address the disposal issue created by OPEFB biomass. Characterization studies such as FESEM, EDX, HRTEM, XRD, FTIR, UV–Vis DRS, PL, XPS, and surface analysis were conducted. It was observed that the incorporation of cellulose could hinder the agglomeration, reduce the band gap energy to 3 eV, increase the specific surface area to 150.22 m3/g, and lower the recombination rate of the generated electron-hole pairs compared to Ag/TiO2 nanoparticles. The excellent properties enhance the sonocatalytic degradation efficiency of 10 mg/L Congo red (up to 81.3% after 10 min ultrasonic irradiation) in the presence of 0.5 g/L cellulose/Ag/TiO2 at 24 kHz and 280 W. The improvement of catalytic activity was due to the surface plasmon resonance effect of Ag and numerous hydroxyl groups on cellulose that capture the holes, which delay the recombination rate of the charge carriers in TiO2. This study demonstrated an alternative approach in the development of an efficient sonocatalyst for the sonocatalytic degradation of Congo red.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

et al. 2021

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“…At the same time, the light penetration was weakened and the absorption of visible light was affected by the composite. 54–56 UV-vis absorption spectra of MO and MG (Fig. 7e and f) reflect the photocatalytic degradation process.…”

Section: Resultsmentioning

confidence: 99%

AgBr nanoparticle surface modified SnO₂ enhanced visible light catalytic performance: characterization, mechanism and kinetics study

Dai,

Yang,

et al. 2023

RSC Adv.

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“…The photocatalytic efficiency of wt 15% BWO decreased, and the effect was mainly reflected in the photocatalytic stage rather than adsorption. The reason for this is that the adhesion of excessive black Ag 2 S on the surface of Bi 2 WO 6 led to the shielding of the active site on the surface of the photocatalyst, which weakened the transmission performance of the incident light and affected the absorption of visible light by the composite. − …”

Section: Resultsmentioning

confidence: 99%

Ag₂S Nanoparticles Supported on 3D Flower-Shaped Bi₂WO₆ Enhanced Visible Light Catalytic Degradation of Tetracycline

Dai,

Yang,

Tang

2023

ACS Omega

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A three-dimensional flower-shaped Bi2WO6 has been prepared by a hydrothermal procedure without the addition of an auxiliary agent and under neutral conditions with ultrapure water serving as solvent, and the Ag2S–Bi2WO6 composite with weight ratios of 5, 10, and 15% was prepared by a hydrothermal method. The crystallinity, morphology, mode of binding, and optical properties of the Ag2S–Bi2WO6 composite were characterized, the results of which showed that the composite had excellent dispersion, crystallinity, and purity. The composite with a weight ratio of 10% had the best photocatalytic performance, and the degradation rate of tetracycline reached 95.51% within 120 min, an increase of 27.35% over Bi2WO6. In experiments, some focus was given to the effect of the initial solution pH and the concentrations of humic acid and inorganic anions on the degradation efficiency. Based on free radical capture experiments and the semiconductor theory, the main active substances and mechanisms in the optical catalytic reaction process were studied, and speculation was given concerning the degradation pathway for the target pollutants. This study has conceived novel methods for the development of dual semiconductor systems consisting of a Ag NP composite and in doing so has provided new approaches for the development and photocatalysis for water pollution control.

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Intensification of the Orange II and Black 5 degradation by sonophotocatalysis using Ag-graphene oxide/TiO2 systems

Cited by 22 publications

References 49 publications

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

AgBr nanoparticle surface modified SnO₂ enhanced visible light catalytic performance: characterization, mechanism and kinetics study

Ag₂S Nanoparticles Supported on 3D Flower-Shaped Bi₂WO₆ Enhanced Visible Light Catalytic Degradation of Tetracycline

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Intensification of the Orange II and Black 5 degradation by sonophotocatalysis using Ag-graphene oxide/TiO2 systems

Cited by 22 publications

References 49 publications

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

AgBr nanoparticle surface modified SnO2 enhanced visible light catalytic performance: characterization, mechanism and kinetics study

Ag2S Nanoparticles Supported on 3D Flower-Shaped Bi2WO6 Enhanced Visible Light Catalytic Degradation of Tetracycline

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Product

Resources

About

AgBr nanoparticle surface modified SnO₂ enhanced visible light catalytic performance: characterization, mechanism and kinetics study

Ag₂S Nanoparticles Supported on 3D Flower-Shaped Bi₂WO₆ Enhanced Visible Light Catalytic Degradation of Tetracycline