Visible light driven photocatalytic degradation of methylene blue by ZnO nanostructures synthesized by glycine nitrate auto combustion route

Bhapkar, Abhishek R.; Prasad, Rishi; Jaspal, Dipika; Shirolkar, Mandar M.; Gheisari, Kh.; Bhame, Shekhar D.

doi:10.1016/j.inoche.2022.110311

Cited by 22 publications

(6 citation statements)

References 83 publications

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“…However, after adding photocatalyst the efficiency of light‐induced reaction was much improved (Figure S7c–f). The reaction rate constants and correlation coefficients for the MB photodegradation using ZnO‐based materials annealed at different temperatures were calculated using a pseudo‐first‐order kinetic model as reported elsewhere [27] and summarized in Table S2. The increase in MB degradation rate constant (Figure 4a) for Zn_Ba, Zn_Sr, Zn_Ca samples when the average crystallite size increases to ~40 nm (Figure 4b) during annealing was observed.…”

Section: Resultsmentioning

confidence: 99%

Photo(electro)catalytic Performance of ZnO‐Based Nanopowders Prepared through Pulse Alternating Current Electrosynthesis in Alkaline Earth Chloride Electrolytes

Ulyankina,

Tsarenko,

Yatsenko

et al. 2023

ChemistrySelect

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Photo(electro)catalysis is a technology that allows abundant and clean solar energy to be harvested as an essential step to achieving sustainable development goals. However, controllable and economically viable synthesis of nanocatalysts is one of the key challenges that hinder the practical application of many important energy‐related photo(electro)catalytic reactions. In this study insights into the electrosynthesis of ZnO‐based materials using pulse alternating current as a green oxidant and the alkaline earth metal chloride aqueous solutions as electrolytes were provided. The effect of electrolyte on composition and structure of final products was demonstrated. ZnO photocatalyst prepared in BaCl2 exhibited different activity tendency in photoelectrocatalytic and photocatalytic systems showing the highest photocurrent (0.18 mA cm−2) for ZnO photoelectrode annealed at 300 °C and maximum rate constant for methylene blue dye photodegradation in the presence of ZnO particles annealed at 500 °C. Optimized ZnO nanopowder was further employed for the degradation of 2,4‐dinitrophenol pollutant in a custom‐designed flow photoreactor operating under low‐power UV. 2,4‐dinitrophenol was degraded to 90.1 % at ZnO dosage of 0.2 mg L−1 within 280 min of illumination. Overall, the optimization of pulse alternating current electrosynthesis and post‐annealing might be promising and sustainable approach to ZnO‐based nanopowders for environmental photo(electro)catalytic applications.

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Section: Resultsmentioning

confidence: 99%

Photo(electro)catalytic Performance of ZnO‐Based Nanopowders Prepared through Pulse Alternating Current Electrosynthesis in Alkaline Earth Chloride Electrolytes

Ulyankina,

Tsarenko,

Yatsenko

et al. 2023

ChemistrySelect

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“…The vibration peak at 590 wavenumber corresponds to the characteristic stretching vibration in the structure of ZnO. In literature, depending upon synthesis and experimental conditions, various Zn-O band positions have been reported at 423 [13], 490 [14], 580 [15], 677…”

Section: Morphological and Structural Elucidation Of Izo Nanocompositementioning

confidence: 99%

Engineering piezoelectric efficiency in phase-separated PVDF nanocomposites using In 2 O 3 -ZnO heterostructure

Yempally,

Bhapkar,

Prasad

et al. 2024

Preprint

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The current research explores the piezoelectric output voltage efficiency of polyvinylidene fluoride (PVDF) nanocomposites containing In2O3-ZnO heterostructure fabricated by the phase separation methodology. Non-solvent induced phase separation using octanol creates uniform pores and spherulites within the polymer composites. Heterostructures of nanomaterials of ZnO quasi-spherical interface with In2O3 crystalline nucleus enhances the number of crystallites with reduced size, thereby contributing to the piezoelectric performance. Phase separation creates granular and rough surface morphology for the PVDF spherulites with advancement in the β-phase, which is the major reason for power generation. A specific circular sample of 2% PVDF/IZO with a diameter of 3cm and thickness of ~ 150 µm produced the highest output voltage of 1.32 V, almost 26 times higher than that obtained from the neat PVDF film of the same dimension. The study highlights the application of phase separation as a cost-effective self-polarization strategy to considerably increase the phase content and, thereby, sustainable energy harvesting.

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“…Though there are reports available for methylene blue degradation, [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] there is no report in the literature for MB degradation in the presence of H 2 O 2 . Moreover, the origin of uorescent species aer the treatment of H 2 O 2 and photocatalyst with dye for sensing applications is completely novel, as reported in this manuscript.…”

Section: Choice Of Mbmentioning

confidence: 99%

Photocatalytic degradation of methyl blue dye with H₂O₂ sensing

Sharma,

Ganguly,

Sahu

2024

RSC Adv.

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Visible light driven photocatalytic degradation of methylene blue by ZnO nanostructures synthesized by glycine nitrate auto combustion route

Cited by 22 publications

References 83 publications

Photo(electro)catalytic Performance of ZnO‐Based Nanopowders Prepared through Pulse Alternating Current Electrosynthesis in Alkaline Earth Chloride Electrolytes

Photo(electro)catalytic Performance of ZnO‐Based Nanopowders Prepared through Pulse Alternating Current Electrosynthesis in Alkaline Earth Chloride Electrolytes

Engineering piezoelectric efficiency in phase-separated PVDF nanocomposites using In 2 O 3 -ZnO heterostructure

Photocatalytic degradation of methyl blue dye with H₂O₂ sensing

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Visible light driven photocatalytic degradation of methylene blue by ZnO nanostructures synthesized by glycine nitrate auto combustion route

Cited by 22 publications

References 83 publications

Photo(electro)catalytic Performance of ZnO‐Based Nanopowders Prepared through Pulse Alternating Current Electrosynthesis in Alkaline Earth Chloride Electrolytes

Photo(electro)catalytic Performance of ZnO‐Based Nanopowders Prepared through Pulse Alternating Current Electrosynthesis in Alkaline Earth Chloride Electrolytes

Engineering piezoelectric efficiency in phase-separated PVDF nanocomposites using In 2 O 3 -ZnO heterostructure

Photocatalytic degradation of methyl blue dye with H2O2 sensing

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Photocatalytic degradation of methyl blue dye with H₂O₂ sensing