Photoactivity of nanostructured spheres of BiVO4 synthesized by ultrasonic spray pyrolysis at low temperature

Aguilera-Ruiz, Eduardo; Zambrano‐Robledo, Patricia del Carmen; Vazquez‐Arenas, Jorge; Cruz-Ortiz, Brenda R.; Peral, José; García-Pérez, Ulises M.

doi:10.1016/j.materresbull.2021.111447

Cited by 21 publications

(3 citation statements)

References 36 publications

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“…It is speculated that the surface facets of particles produced by LASiS result from energy minimisation approaching a thermodynamic equilibrium-driven shape [ 17 ]. This might be caused by the short crystal growth time due to the high cooling rates [ 8 , 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…The precursor solutions were prepared in deionised water by dissolving defined amounts of AgNO 3 with concentrations varying as 0.01 M, 0.005 M, 0.002 M and 0.001 M. The typical synthesis was performed with a single-step USP equipment comprised of carrier and/or reaction gas, flow regulator, ultrasonic aerosol generator (1.7 MHz; Gapusol, RBI, France), horizontal wall heated furnace with a quartz tube reactor and the washing bottles filled with ethanol, to capture the nanoparticles ( Figure 10 b). Details of this equipment have been previously described in the literature [ 8 , 18 ]. The optimal nitrogen flow of 1.5 L/min and reaction temperature of 800 °C were fixed to assure complete decomposition of silver nitrate.…”

Section: Methodsmentioning

confidence: 99%

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Production of Silver Nano-Inks and Surface Coatings for Anti-Microbial Food Packaging and Its Ecological Impact

Manikandan

McCann

Kakavas

et al. 2023

IJMS

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Food spoilage is an ongoing global issue that contributes to rising carbon dioxide emissions and increased demand for food processing. This work developed anti-bacterial coatings utilising inkjet printing of silver nano-inks onto food-grade polymer packaging, with the potential to enhance food safety and reduce food spoilage. Silver nano-inks were synthesised via laser ablation synthesis in solution (LaSiS) and ultrasound pyrolysis (USP). The silver nanoparticles (AgNPs) produced using LaSiS and USP were characterised using transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, UV-Vis spectrophotometry and dynamic light scattering (DLS) analysis. The laser ablation technique, operated under recirculation mode, produced nanoparticles with a small size distribution with an average diameter ranging from 7–30 nm. Silver nano-ink was synthesised by blending isopropanol with nanoparticles dispersed in deionised water. The silver nano-inks were printed on plasma-cleaned cyclo-olefin polymer. Irrespective of the production methods, all silver nanoparticles exhibited strong antibacterial activity against E. coli with a zone of inhibition exceeding 6 mm. Furthermore, silver nano-inks printed cyclo-olefin polymer reduced the bacterial cell population from 1235 (±45) × 106 cell/mL to 960 (±110) × 106 cell/mL. The bactericidal performance of silver-coated polymer was comparable to that of the penicillin-coated polymer, wherein a reduction in bacterial population from 1235 (±45) × 106 cell/mL to 830 (±70) × 106 cell/mL was observed. Finally, the ecotoxicity of the silver nano-ink printed cyclo-olefin polymer was tested with daphniids, a species of water flea, to simulate the release of coated packaging into a freshwater environment.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Production of Silver Nano-Inks and Surface Coatings for Anti-Microbial Food Packaging and Its Ecological Impact

Manikandan

McCann

Kakavas

et al. 2023

IJMS

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“…On examining the ZnO/BiVO 4 heterojunction, it is noted that many techniques have been used for the preparation of the ZnO/BiVO 4 binary composite. − ,,,− Among these various methods, ultrasonication is one of the most popular techniques for the creation of the photocatalyst heterojunction. This is due to the advantages of low cost, low energy consumption, and easy control. − …”

Section: Introductionmentioning

confidence: 99%

Ultrasound-Assisted Synthesis of a ZnO/BiVO₄ S-Scheme Heterojunction Photocatalyst for Degradation of the Reactive Red 141 Dye and Oxytetracycline Antibiotic

et al. 2023

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The preparation of novel sunlight active photocatalysts for complete removal of pollutants from aqueous solutions is a vital research topic in environmental protection. The present work reports the synthesis of a ZnO/BiVO4 S-scheme heterojunction photocatalyst for degradation of the reactive red dye and oxytetracycline antibiotic in wastewater. ZnO and BiVO4 were first fabricated by a hydrothermal technique, and then, the ZnO/BiVO4 heterostructure was synthesized using an ultrasonic route. An increase of the surface area, compared to that of ZnO, was found in ZnO/BiVO4. The enhancement of charge separation efficiency at the interface was obtained so that a remarkable enhancement of the photocatalytic performance was detected in the prepared heterojunction photocatalyst. Complete detoxification of harmful pollutants was achieved by using the economical solar energy. The removal of the pollutants follows the first-order reaction with the highest rate constant of 0.107 min–1. The stability of the prepared photocatalyst was detected after five cycles of use. The ZnO/BiVO4 S-scheme heterostructure photocatalyst still provides high photoactivity even after five times of use. Hydroxyl radicals play an important role in the removal of the pollutant. This work demonstrates a new route to create the step-scheme heterojunction with high photoactivity for complete removal of the toxic dye and antibiotic in the environment.

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Recent Advances in the Large‐Scale Production of Photo/Electrocatalysts for Energy Conversion and beyond

Li,

Sun

et al. 2024

Advanced Energy Materials

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Photocatalysis and electrocatalysis have emerged as promising technologies for addressing the energy crisis and environmental issues. However, the widespread application of these technologies is hampered by the challenge of scaling up the production of photo/electrocatalysts that are not only highly active and stable but also cost‐effective and environmentally benign. This review delves into the latest advancements in the large‐scale synthesis of photo/electrocatalysts. The factors to be considered in the large‐scale production of catalysts are discussed first. The synthesis methods for batch preparation of photo/electrocatalysts are then comprehensively introduced, with a thorough discussion of their respective advantages and limitations. Moreover, the data analysis via machine learning techniques, which not only accelerates the identification and refinement of potential new catalysts but also offers insights for enhancing the high‐throughput synthesis of catalysts, is introduced in detail. Then the representative examples are presented to illustrate the applications of large‐scale catalysts in the field of industrial‐level photo/electrocatalysis. Finally, the challenges and prospects in the development of large‐scale production of photo/electrocatalysts are discussed. By bridging the gap between laboratory research and industrial application, this review aims to provide a reference for the future of large‐scale preparation of photo/electrocatalysts in sustainable energy conversion and beyond.

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Photoactivity of nanostructured spheres of BiVO4 synthesized by ultrasonic spray pyrolysis at low temperature

Cited by 21 publications

References 36 publications

Production of Silver Nano-Inks and Surface Coatings for Anti-Microbial Food Packaging and Its Ecological Impact

Production of Silver Nano-Inks and Surface Coatings for Anti-Microbial Food Packaging and Its Ecological Impact

Ultrasound-Assisted Synthesis of a ZnO/BiVO₄ S-Scheme Heterojunction Photocatalyst for Degradation of the Reactive Red 141 Dye and Oxytetracycline Antibiotic

Recent Advances in the Large‐Scale Production of Photo/Electrocatalysts for Energy Conversion and beyond

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Photoactivity of nanostructured spheres of BiVO4 synthesized by ultrasonic spray pyrolysis at low temperature

Cited by 21 publications

References 36 publications

Production of Silver Nano-Inks and Surface Coatings for Anti-Microbial Food Packaging and Its Ecological Impact

Production of Silver Nano-Inks and Surface Coatings for Anti-Microbial Food Packaging and Its Ecological Impact

Ultrasound-Assisted Synthesis of a ZnO/BiVO4 S-Scheme Heterojunction Photocatalyst for Degradation of the Reactive Red 141 Dye and Oxytetracycline Antibiotic

Recent Advances in the Large‐Scale Production of Photo/Electrocatalysts for Energy Conversion and beyond

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Ultrasound-Assisted Synthesis of a ZnO/BiVO₄ S-Scheme Heterojunction Photocatalyst for Degradation of the Reactive Red 141 Dye and Oxytetracycline Antibiotic