Surfactant-assisted synthesis of copper oxide nanorods for the enhanced photocatalytic degradation of Reactive Black 5 dye in wastewater

Rao, Martha Purna Chander; Kaviyarasan, K.; Ponnusamy, Vinoth Kumar; Wu, Jerry J.; Anandan, Sambandam

doi:10.1007/s11356-019-05434-1

Cited by 24 publications

(4 citation statements)

References 38 publications

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“…It is worth noting that an excess of alkali accelerates the precipitation of CuO and influences the length of the nanowires in the final stage. Besides, the long chain of (sodium dodecyl sulfate) SDS serves as a template for particles to adhere to one another and expand in a preferred direction, , which are transformed into long spikes like nanowires originating from a common core, with porosity in the structure, evidenced by BET analysis of the nanostructures, shown in Figure S1. Zhou et al report a significant increase in the concentration of adsorbed oxygen ions on the surface of Fe 2 O 3 @Pd@Rh with gradual structural modification starting from Fe 2 O 3 to Fe 2 O 3 @Pd to Fe 2 O 3 @Rh and finally to Fe 2 O 3 @Pd@Rh.…”

Section: Resultsmentioning

confidence: 99%

Ethanol Gas Sensors Using Semi-Hedgehog-like CuO Nanostructures: Studying the Role of Oxygen Vacancies, Unsaturated Cu-Sites, and Hole Accumulation Layer

Shaw,

Samanta,

Shaik

et al. 2023

ACS Appl. Nano Mater.

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Section: Resultsmentioning

confidence: 99%

Ethanol Gas Sensors Using Semi-Hedgehog-like CuO Nanostructures: Studying the Role of Oxygen Vacancies, Unsaturated Cu-Sites, and Hole Accumulation Layer

Shaw,

Samanta,

Shaik

et al. 2023

ACS Appl. Nano Mater.

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“…Another study uses TiO 2 /WO 3 -coated magnetic nanoparticles for degrading sixteen organic dyes, and notes a rapid rate of degradation, with complete decolorization noted in the case of ten dyes upon irradiation in direct sunlight [136]. Another type of photocatalyst includes copper-based nanoparticles, which exhibit effective degradability of organic dyes, as proven by Rao et al (2019), who report 98% efficiency upon degrading Reactive Black dye using copper oxide nanorods [30]. Furthermore, these nanoparticles report similar degradation efficiencies upon remediating methyl orange, methylene blue, and Congo red, simultaneously [137].…”

Section: Removal Of Dyes and Their Derivativementioning

confidence: 98%

Current Developments in the Effective Removal of Environmental Pollutants through Photocatalytic Degradation Using Nanomaterials

et al. 2022

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Photocatalysis plays a prominent role in the protection of the environment from recalcitrant pollutants by reducing hazardous wastes. Among the different methods of choice, photocatalysis mediated through nanomaterials is the most widely used and economical method for removing pollutants from wastewater. Recently, worldwide researchers focused their research on eco-friendly and sustainable environmental aspects. Wastewater contamination is one of the major threats coming from industrial processes, compared to other environmental issues. Much research is concerned with the advanced development of technology for treating wastewater discharged from various industries. Water treatment using photocatalysis is prominent because of its degradation capacity to convert pollutants into non-toxic biodegradable products. Photocatalysts are cheap, and are now emerging slowly in the research field. This review paper elaborates in detail on the metal oxides used as a nano photocatalysts in the various type of pollutant degradation. The progress of research into metal oxide nanoparticles, and their application as photocatalysts in organic pollutant degradation, were highlighted. As a final consideration, the challenges and future perspectives of photocatalysts were analyzed. The application of nano-based materials can be a new horizon in the use of photocatalysts in the near future for organic pollutant degradation.

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“…al., for CuO nanoparticles which are synthesized by chemical precipitation and thermal decomposition methods, respectively. [33,34] The band gap values estimated from Tauc's plot [Figure 5(b)] are found to be 1.47, 1.38, 1.33, 1.22 and 1.13 eV for C, RC1, RC2, RC3, and RC4 respectively. The blue shift in band gap value confirmed the formation of nanocomposites.…”

Section: Diffused Reflectance Uv-visible Absorption Spectroscopymentioning

confidence: 99%

Antimicrobial, Photocatalytic, and Non‐Enzymatic Glucose Sensors Applications of Nanoplate‐Structured CuO:rGO Nanocomposites**

Preethi¹,

Pachamuthu²,

Senthil

et al. 2023

ChemistrySelect

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In the current work, reduced graphene oxide (rGO) layers (20, 40, 60, and 80 mg) are decorated over the surface of copper oxide (CuO) nanoparticles using a simple and in‐situ hydrothermal reduction method. The notable variation in the XRD peak intensity of CuO:rGO samples indicates the formation of nanocomposite. HRTEM and FESEM analysis reveal a nanoplate‐like morphology with uniform particle distribution. Further, the nanocomposites are characterized using FTIR, DRS UV Visible, and XPS techniques. Here, multi‐functional applications of the synthesized nanocomposites are investigated through photocatalytic dye degradation, antimicrobial, and electrochemical sensing analyses. The photocatalytic activity of synthesized CuO:rGO nanocomposites with hydrogen peroxide (H2O2) showed higher efficiency (98 %) than pure CuO. The effects of pH, various scavengers, and different dyes on the degradation efficiencies of CuO:rGO nanocomposites are also investigated. Using the agar well diffusion method, these nanocomposites exhibited a zone of inhibition value of 32 mm against both gram positive (Bacillus subtilis) and gram negative (Escherichia coli) bacterial strains when compared to pure rGO and CuO nanoparticles. Also, nanocomposites are found to be suitable for non‐enzymatic glucose sensing with a detection limit in the range from 0.05 to 4 mM, as evidenced from the cyclic voltammetry (CV) analysis.

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Surfactant-assisted synthesis of copper oxide nanorods for the enhanced photocatalytic degradation of Reactive Black 5 dye in wastewater

Cited by 24 publications

References 38 publications

Ethanol Gas Sensors Using Semi-Hedgehog-like CuO Nanostructures: Studying the Role of Oxygen Vacancies, Unsaturated Cu-Sites, and Hole Accumulation Layer

Ethanol Gas Sensors Using Semi-Hedgehog-like CuO Nanostructures: Studying the Role of Oxygen Vacancies, Unsaturated Cu-Sites, and Hole Accumulation Layer

Current Developments in the Effective Removal of Environmental Pollutants through Photocatalytic Degradation Using Nanomaterials

Antimicrobial, Photocatalytic, and Non‐Enzymatic Glucose Sensors Applications of Nanoplate‐Structured CuO:rGO Nanocomposites**

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