Piezocatalytic dye degradation using Bi2O3-ZnO-B2O3 glass-nanocomposites

Porwal, Chirag; Sharma, Moolchand; Vaish, Rahul; Chauhan, Vishal Singh; Ahmed, Samia ben; Hwang, Wonseop; Sung, Tae Hyun; Kumar, Anuruddh

doi:10.1016/j.jmrt.2022.10.041

Cited by 36 publications

(4 citation statements)

References 34 publications

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“…At the same time, the holes in the VB of BZOP oxidize H 2 O into • OH radicals, whereas the electrons relocate from the CB of BZOP to the Ag dopant that behaves as an electron trap center. The electron trap centers decrease the electron–hole pairs’ rate of recombination and enhance the lifetime and interfacial CT . The scavenger study reveals that radicals such as O 2 •– and • OH are responsible for MB and RB mineralization under visible-light irradiation.…”

Section: Mechanismmentioning

confidence: 93%

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi₂Zr₂O₇ Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Pompapathi,

Anantharaju,

Karuppasamy

et al. 2024

ACS Environ. Au

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Novel visible-light-driven Ag (X)-doped Bi2Zr2O7 (BZO) nanocomposites in pudina (P) extract (Mentha spicata L.), X-1, 3, 5, 7, and 9 mol %, were synthesized by the one-pot greener solution combustion method. The as-synthesized nanocomposite materials were characterized by using various spectral [X-ray diffraction (XRD), Fourier transform infrared, UV–visible, UV– diffuse reflectance spectra, X-ray photoelectron spectroscopy], electrochemical (cyclic voltammetry, electrochemical impedance spectroscopy), and analytical (scanning electron microscopy–energy-dispersive X-ray spectroscopy, transmission electron microscopy, Brunauer–Emmett–Teller) techniques. The average particle size of the nanocomposite material was found to be between 14.8 and 39.2 nm by XRD. The well-characterized Ag-doped BZOP nanocomposite materials exhibited enhanced photocatalytic degradation activity toward hazardous dyes such as methylene blue (MB) and rose bengal (RB) under visible light irradiation ranges between 400 and 800 nm due to their low energy band gap. As a result, 7 mol % of Ag-doped BZOP nanocomposite material exhibited excellent photodegradation activity against MB (D.E. = 98.7%) and RB (D.E. = 99.3%) as compared to other Ag-doped BZOP nanocomposite materials and pure BZOP nanocomposite, respectively, due to enhanced semiconducting and optical behaviors, high binding energy, and mechanical and thermal stabilities. The Ag-doped BZOP nanocomposite material-based electrochemical sensor showed good sensing ability toward the determination of lead nitrate and dextrose with the lowest limit of detection (LOD) of 18 μM and 12 μM, respectively. Furthermore, as a result of the initial antibacterial screening study, the Ag-doped BZOP nanocomposite material was found to be more effective against Gram-negative bacteria (Escherichia coli) as compared to Gram-positive (Staphylococcus aureus) bacteria. The scavenger study reveals that radicals such as O2 •– and •OH are responsible for MB and RB mineralization. TOC removal percentages were found to be 96.8 and 98.5% for MB and RB dyes, and experimental data reveal that the Ag-doped BZOP enhances the radical (O2 •– and •OH) formation and MB and RB degradation under visible-light irradiation.

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Section: Mechanismmentioning

confidence: 93%

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi₂Zr₂O₇ Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Pompapathi,

Anantharaju,

Karuppasamy

et al. 2024

ACS Environ. Au

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“…These materials are able to convert mechanical energy into electrical energy via the direct piezoelectric effect 4,5 . Since these materials exhibit a high efficiency for energy conversion, the processes of piezocatalysis has emerged that uses the direct piezoelectric effect as an advanced oxidation process [6][7][8][9][10][11][12] . During piezocatalysis, or the piezo-electric-chemical coupling process, the charge generated under mechanical stimulation are separated and react with O2/OHto give rise to strong oxidizing active species, which are accountable for weakening organic contaminants [13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Poling and Porosity on BaTiO3 for Piezocatalytic Dye Degradation

Gaur

Sharma

Chauhan

et al. 2023

Preprint

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The presence of both organic and inorganic pollutants in water can represent a threat to our ecosystems and pose a challenge to long-term sustainability. As a result, there is a need to investigate novel methods for addressing environmental remediation. Among a variety of techniques available, piezoelectric catalysis has attracted attention due to its abililty to harness the piezoelectric effect for efficient degradation of pollutants. Herein, porous ceramic barium titnate (BaTiO3) pellets for piezocatalytic dye degradation were synthesized using polymethyl methacrylate (PMMA) as a pore former in 0-30 wt% proportion through solid state reaction method. The synthesized porous BaTiO3 pellets were characterized in detail by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and field emission scanning electron microscopy. An increase in the degradation of a Methylene Blue (MB) dye with an increase in porosity within the BaTiO3 materials, were a maximum degradation was observed for 30 wt% PMMA pellet which has a degradation rate that was ~1.75 greater than the dense (0 wt% PMMA) BaTiO3 ceramic pellet. Furthermore, the synthesized porous BaTiO3 ceramic pellets were pulse poled, where the piezoelectric coefficient (d33) decreased with an increase in porosity. The poled 30 wt% PMMA porous BaTiO3 pellet showed approximately ~57% MB dye degradation in 180 minutes, which was comparable with 30 wt % PMMA unpoled BaTiO3 and dense 0 wt% PMMA poled BaTiO3 ceramic pellet. The study provides insights on the influence of poling of a low density porous ceramic pellets, which are utilised as the piezocatalyst for water remediation.

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“…9 Through continuous exploration and research, a new method of sewage treatment, piezoelectric catalysis, has gradually entered the field of scientific research. 10,11 Compared with traditional sewage treatment methods, piezoelectric catalysis is a novel catalytic method that can convert mechanical energy into chemical energy for utilization. [12][13][14] In recent years, piezoelectric materials have been used for catalytic degradation of organic dyes in wastewater, including BaTiO 3 , Na 0.5 Bi 0.5 TiO 3 , K 0.5 Na 0.5 NbO 3 , and BiOCl.…”

Section: Introductionmentioning

confidence: 99%

Solvothermal synthesis of (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ piezoelectric catalyst with morphotropic-phase-boundary structure for efficient dye degradation

Xie

Hou

et al. 2023

New J. Chem.

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Piezocatalytic dye degradation using Bi2O3-ZnO-B2O3 glass-nanocomposites

Cited by 36 publications

References 34 publications

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi₂Zr₂O₇ Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi₂Zr₂O₇ Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Effect of Poling and Porosity on BaTiO3 for Piezocatalytic Dye Degradation

Solvothermal synthesis of (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ piezoelectric catalyst with morphotropic-phase-boundary structure for efficient dye degradation

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Piezocatalytic dye degradation using Bi2O3-ZnO-B2O3 glass-nanocomposites

Cited by 36 publications

References 34 publications

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi2Zr2O7 Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi2Zr2O7 Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Effect of Poling and Porosity on BaTiO3 for Piezocatalytic Dye Degradation

Solvothermal synthesis of (Na0.8K0.2)0.5Bi0.5TiO3 piezoelectric catalyst with morphotropic-phase-boundary structure for efficient dye degradation

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Product

Resources

About

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi₂Zr₂O₇ Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Visible-Light-Driven Mentha spicata L.-Mediated Ag-Doped Bi₂Zr₂O₇ Nanocomposite for Enhanced Degradation of Organic Pollutants, Electrochemical Sensing, and Antibacterial Applications

Solvothermal synthesis of (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ piezoelectric catalyst with morphotropic-phase-boundary structure for efficient dye degradation