Facile synthesis and characterization of nanocomposite Au0(NPs)/titanium dioxide: Photocatalytic degradation of Alizarin Yellow

Lalliansanga,; Tiwari, Diwakar; Tiwari, Alka; Shukla, Alok; Kim, Dong-Jin; Yoon, Yi-Yong; Lee, Seung Mok

doi:10.1016/j.jiec.2019.10.008

Cited by 31 publications

(8 citation statements)

References 79 publications

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“…This eventually caused an enhanced coulombic repulsions between the MO1 species and nanocomposite surface which resulted in gradual decrease of MO1 removal at pH>6.0 (pH 6~10). Photocatalytic removal of Alizarin Yellow using the catalyst Au 0 (NPs)/TiO 2 thin lm showed similar trends (Lalliansanga et al 2019b). Further, reaction was conducted employing UV-A and LED illuminations without using nanocomposite thin lms at a wide range of pH (pH 4.0-10.0).…”

Section: Photocatalytic Removal Of Mo1 Ph Dependence Removalmentioning

confidence: 73%

“…The Ag 0 (NP) are obtained by simple reduction process (Rashid et al;Lalliansanga et al 2019a). Further, the nanocomposite Ag 0 (NPs)/TiO 2 is obtained by a facile sol gel synthetic route and the thin lms are fabricated as described in detail elsewhere (Tiwari et al 2018(Tiwari et al , 2020.…”

Section: Methodsmentioning

confidence: 99%

“…The time dependence kinetics is carried out to assess the performance of nanocomposite photocatalyst in the elimination of MO1.The kinetic results are at varied concentrations of MO1 is shown in Table 1. It is observed that degradation of MO1 is proceeds through pseudo-rst-order rate equation (Lalliansanga et al 2019b). Further, the time dependent degradation kinetics of MO1 is favoured with the dilution i.e., increasing the concentration of the dyes result in decrease in the rate constant values.…”

Section: Kinetic Study Of Mo1 Degradationmentioning

confidence: 98%

“…Similar data is reported earlier where methylene blue was degraded using graphene decorated TiO 2 (Acosta-Esparza et al 2020). Additionally, the removal of MO1 is modelled to the Langmuir-Hinshelwood (L-H) rate kinetics using the standard equations (Lalliansanga et al 2019b). Therefore, the Langmuir-Hinshelwood (L-H) adsorption constant (k r ;mg/L/min) and the reaction rate constant (K; L/mg) are computed as 0.038 and 0.202 (R 2 : 0.997 for UV-A) and 0.018 and 0.255 (R 2 : 0.976 for LED), respectively.…”

Section: Kinetic Study Of Mo1 Degradationmentioning

confidence: 99%

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Noble metal-doped TiO2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process

Vanlalhmingmawia

Lalhriatpuia

Tiwari

et al. 2022

Environ Sci Pollut Res

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Nanocomposite Ag 0 (NPs)/TiO 2 is synthesized in a facile template method enabling ne particles of reduced Ag evenly distributed within the titania network. The morphological studies of nanocomposite were extensively performed employing SEM/EDX (Scanning Electron Spectroscopy/Energy Dispersive Xray), TEM (Transmission Electron Microscopy) and AFM (Atomic Force Microscopy). The newer insights in the photocatalytic elimination of Mordant Orange-1 (MO1) was obtained using the nanocomposite thin lm for various parametric studies utilizing the UV-A and LED illuminations. The kinetics of degradation of MO1 was performed and the rate constant was favoured at lower concentrations of MO1. However, the elimination e ciency of MO1 was favoured with decrease in solution pH. The NPOC results inferred that fairly good extent of MO1 was mineralized using thin lm catalyst for both the UV-A and LED illuminations. The minimal effect of several co-ions demonstrated applicability of thin lms in the elimination of MO1 and the stability of the thin lm has shown the potential applicability of thin lm catalyst. Further, mechanism of photocatalytic degradation was demonstrated with the radical scavengers studies and ascertained the reaction pathways.

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Section: Photocatalytic Removal Of Mo1 Ph Dependence Removalmentioning

confidence: 73%

Section: Methodsmentioning

confidence: 99%

Section: Kinetic Study Of Mo1 Degradationmentioning

confidence: 98%

Section: Kinetic Study Of Mo1 Degradationmentioning

confidence: 99%

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Noble metal-doped TiO2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process

Vanlalhmingmawia

Lalhriatpuia

Tiwari

et al. 2022

Environ Sci Pollut Res

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“…The synthetic template route fabricated Heterogenous Au/TiO 2 nanocomposite thin film. The thin film is efficient in degrading the Alizarin yellow under UV-A light irradiation and provides a high percentage of mineralization [34]. Photocatalytic falling film reactor with TiO 2 photocatalyst coated on the Pilkington Activ TM glass (PAG) is efficient in degrading the pharmaceuticals, viz., diclofenac (DCF) and ibuprofen (IBP) in an aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Vanlalhmingmawia¹,

Sreenivasa²,

Tiwari³

et al. 2022

Environmental Engineering Research

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The present investigation aims to synthesize the novel nanocomposite thin film and utilize the material to remove emerging dyes efficiently (i.e., Rhodamine B (R-B) and Rhodamine 6G (R-6G)), in an aqueous solution using LED visible light and UV-A light. A facile synthetic route was adopted to obtain the TiO2-supported bentonite and <i>in situ</i> decorated with Au nanoparticles (NPs) thin film. The advanced analytical techniques characterizes the materials. The laboratory scale reactor was utilized for efficient degradation of R-B and R-6G using thin film catalysts. The percentage removal of R-B was 54.13% (visible light) and 76.26% (UV-A light) and the R-6G, was removed 60.37% (visible light) and 84.68% (UV-A light) at the initial pollutant concentration of 0.5 mg/L and at pH 6.0 using the thin film photocatalyst. The parametric studies demonstrated the insights of degradation mechanisms in photocatalytic operations. A significant mineralization of these dyes is achieved, and the repeated use in reactor operations indicated the catalysts

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Recent Advances in Plasmonic Photocatalysis Based on TiO₂ and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

Kumar

Choudhary

Kumar

et al. 2021

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Facile synthesis and characterization of nanocomposite Au0(NPs)/titanium dioxide: Photocatalytic degradation of Alizarin Yellow

Cited by 31 publications

References 79 publications

Noble metal-doped TiO2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process

Noble metal-doped TiO2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Recent Advances in Plasmonic Photocatalysis Based on TiO₂ and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

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Facile synthesis and characterization of nanocomposite Au0(NPs)/titanium dioxide: Photocatalytic degradation of Alizarin Yellow

Cited by 31 publications

References 79 publications

Noble metal-doped TiO2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process

Noble metal-doped TiO2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Recent Advances in Plasmonic Photocatalysis Based on TiO2 and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

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Product

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Recent Advances in Plasmonic Photocatalysis Based on TiO₂ and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis