Photocatalytic dye degradation and biological activities of the Fe2O3/Cu2O nanocomposite

Abhilash, M. R.; Gangadhar, Akshatha; Srikantaswamy, S.

doi:10.1039/c8ra09929d

Cited by 132 publications

(49 citation statements)

References 69 publications

(48 reference statements)

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“…One of the most extensively investigated applications is the Cu 2 O-catalysed, light-driven purification of wastewater [10]. For example, various combinations of metal-Cu 2 O nanoparticles have been used for the decontamination of water polluted with dyes or hydrogen peroxide [11]. Here, Cu 2 O particles are labeled cleaning "nano-swimmers" or "micromotors" as they exhibit self-propelled movement, driven by gases that are generated at one end of the Cu 2 O particle.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Cu2O Synthesized via Bipolar Electrochemistry

et al. 2019

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Cuprous oxide (Cu2O) was synthesized for the first time via an open bipolar electrochemistry (BPE) approach and characterized in parallel with the commercially available material. As compared to the reference, Cu2O formed through a BPE reaction demonstrated a decrease in particle size; an increase in photocurrent; more efficient light scavenging; and structure-correlated changes in the flat band potential and charge carrier concentration. More importantly, as-synthesized oxides were all phase-pure, defect-free, and had an average crystallite size of 20 nm. Ultimately, this study demonstrates the impact of reaction conditions (e.g., applied potential, reaction time) on structure, morphology, surface chemistry, and photo-electrochemical activity of semiconducting oxides, and at the same time, the ability to maintain a green synthetic protocol and potentially create a scalable product. In the proposed BPE synthesis, we introduced a common food supplement (potassium gluconate) as a reducing and complexing agent, and as an electrolyte, allowing us to replace the more harmful reactants that are conventionally used in Cu2O production. In addition, in the BPE process very corrosive reactants, such as hydroxides and metal precursors (required for synthesis of oxides), are generated in situ in stoichiometric quantity, providing an alternative methodology to generate various nanostructured materials in high yields under mild conditions.

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Section: Introductionmentioning

confidence: 99%

Nanostructured Cu2O Synthesized via Bipolar Electrochemistry

et al. 2019

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“…This method includes the qualitative assessment of the cell disinfection by the zone of inhibition on the solid agar plates. The clear portion in the Figure shows the zone of inhibition and activity of the catalyst for cell viability …”

Section: Recent Advancement In the Area Of Disinfection Researchmentioning

confidence: 99%

“… Antibacterial activity of different materials by disc diffusion method (a) E. coli ; (b) P. aeruginosa ; (c) Staph. aureus ; (d) B. subtilis [reprinted with the permission of copyright clearance center] .…”

Section: Recent Advancement In the Area Of Disinfection Researchmentioning

confidence: 99%

Bacterial Lysis via Photocatalysis ‐ A Critical Mechanistic Review

Gupta

Modak

2020

ChemCatChem

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This Review discusses one of the most important area of photocatalytic reactions. In current research scenario, photocatalysis is well utilized strategy for a wide variety of applications including organic/ inorganic decontamination, solar fuel generation, microbial disinfection etc. This Review touches upon the mechanistic aspect of microbial disinfection, the growth in the research, issues to be addressed in future to make it a sustainable technology for this application. This Review discusses the fundamental understanding of photocatalysis, important strategies to tune their optical properties to enhance the spectral range of absorption in visible and near infrared wavelength region. Various photocatalysis reports these days don't focus on the stability, reusability and recovery of the photocatalysts. However, these issues are very important to deal with for large scale viability of the process. Therefore, we have tried to address these issues along with the detailed experimental information and eliminate the misconceptions about bacterial disinfection. The details provided in this Review would help the researchers working in this area to a large extent and would open various questions for them to answer.

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“…The catalytic performance for degradation of JGB in the as-synthesized Ag•ZnO•AC composite was compared with different catalysts from recent literatures [6,23,42,43]. sThe reaction condition and degradation efficiency of these catalysts are listed in Table 3.…”

Section: The Degradation Of Other Dyes and Organic Compounds And Compmentioning

confidence: 99%

Synthesis of Nano-Flakes Ag•ZnO•Activated Carbon Composite from Rice Husk as A Photocatalyst under Solar Light

Pham

Tran

et al. 2020

Bull. Chem. React. Eng. Catal.

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This study aimed to synthesize Ag•ZnO•Activated carbon (Ag•ZnO•AC ) composite from rice husk for degradation of dyes. The deposition of Ag and ZnO on AC led to decreasing the surface area and pore volume of Ag•ZnO•AC composite. In addition, when Ag and ZnO were dispersed on activated carbon, the Ag•ZnO flakes became denser and tighter, but the particle size of Ag became smaller from 5 to 7 nm. The photocatalytic ability of Ag•ZnO•AC composite was evaluated by degradation of Janus Green B (JGB) and compared with that of AC, ZnO, Ag•ZnO, and ZnO•AC samples. The effects of catalyst dosages, pH values, and initial dye concentrations on photocatalytic degradation were investigated in detail. The Ag•ZnO•AC composite had a high degradation efficiency of 100% in 60 min, showing the reaction rate of 0.120 min-1 and degradation capacity of 17.8 mg/g within 20 min. The photocatalytic performance of the Ag•ZnO•AC composite was also evaluated by cyclic test and the degradation of other persistent dyes such as Methylene Blue, Tartrazine, Congo Red, and organic compounds (Caffeine and Bisphenol A). Based on the experimental results, the possible destruction route of JGB by the as-synthesized Ag•ZnO•AC composite was suggested. Copyright © 2020 BCREC Group. All rights reserved

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Photocatalytic dye degradation and biological activities of the Fe₂O₃/Cu₂O nanocomposite

Abstract: The present study reports the synthesis of the Fe2O3/Cu2O nanocomposite via a facile hydrothermal route.

Cited by 132 publications

References 69 publications

Nanostructured Cu2O Synthesized via Bipolar Electrochemistry

Nanostructured Cu2O Synthesized via Bipolar Electrochemistry

Bacterial Lysis via Photocatalysis ‐ A Critical Mechanistic Review

Synthesis of Nano-Flakes Ag•ZnO•Activated Carbon Composite from Rice Husk as A Photocatalyst under Solar Light

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