Mechanistic understanding of microstructure formation during synthesis of metal oxide/carbon nanocomposites

Elmanzalawy, Mennatalla; Innocenti, Alessandro; Zarrabeitia, Maider; Peter, Nicolas J.; Passerini, Stefano; Augustyn, Veronica; Fleischmann, Simon

doi:10.1039/d3ta01230a

Cited by 3 publications

(1 citation statement)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The enhancement of photocatalytic efficiency for ZnO-carbon doped might be due to the good dye adsorption capacity, direct photo-oxidation of dye, and inhibition of photo-induced electron–hole recombination 29 . Doping synthesis usually need sophisticated methods lacking simplicity and high yield production 30 , 31 . Solid state synthesis of metal oxides from molecular precursor have several advantages over the other synthetic approaches as it is simple, gives good yields that facilitates large scale 32 .The use of ZnO as a photo-catalyst was studied in the degradation of Rhodamine B dye under UV radiation 33 – 35 .…”

Section: Introductionmentioning

confidence: 99%

ZnO doped C: Facile synthesis, characterization and photocatalytic degradation of dyes

Hosny,

Gomaa,

Elmahgary

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Carbon doped ZnO nanoparticles have been synthesized from the thermal decomposition of Zinc citrate precursor. The precursor was synthesized from semi-solid paste and then subjected to calcination at 700 °C to produce ZnO nanoparticles. The precursor and ZnO were characterized by Fourier Transform Infrared Spectroscopy, UV–visible (UV–Vis) spectra, Transmission Electron Microscope, Field Emission Scanning Electron Microscope, Energy Dispersive Analysis by X-ray (EDAX), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results ensured the formation of hexagonal 2D-ZnO nanoparticles with a layer thickness of 25 nm. The optical band gap of ZnO was determined and found to be 2.9 eV, which is lower than the bulk. Photocatalytic degradation of Fluorescein dye as an anionic dye and Rhodamine B as a cationic dye was evaluated via C-ZnO NPs under UV irradiation. ZnO displayed 99% degradation of Fluorescein dye after 240 min and a complete photocatalytic degradation of Rhodamine B dye after 120 min under UV irradiation.

show abstract

Section: Introductionmentioning

confidence: 99%

ZnO doped C: Facile synthesis, characterization and photocatalytic degradation of dyes

Hosny,

Gomaa,

Elmahgary

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

MoOxNWs with mechanical damage – oriented synergistic photothermal / photodynamic therapy for highly effective treating wound infections

Xu,

Zhang,

Zhang

et al. 2024

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Analysis of Battery-like and Pseudocapacitive Ion Intercalation Kinetics via Distribution of Relaxation Times

Malik,

Braig,

Simon

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

Improving the kinetics of electrochemical ion intercalation processes is of interest for realizing high-power electrochemical energy storage. This includes classical battery-like intercalation and pseudocapacitive intercalation processes with a capacitor-like electrochemical signature. Electrochemical methods are needed to probe the kinetics of such complex multistep processes in detail. Here, we present the use of the distribution of relaxation times (DRT) analysis of electrochemical impedance data to identify the kinetic limits of intercalation reactions. We study the lithium intercalation reaction in TiS2 from organic and aqueous electrolytes as a model system. The material can exhibit both battery-like and pseudocapacitive intercalation regimes depending on the potential range, variable diffusion lengths by adjusting its particle size, and a tunable degree of solvent cointercalation by choosing the electrolyte solvent. Using DRT, we can distinguish between the kinetic limitations imposed by solid-state ion diffusion, interfacial ion adsorption and transport, and ion desolvation processes. Thus, DRT analysis can complement existing methods, such as voltammetry or 3D-Bode analysis, to better understand the kinetics of intercalation reactions.

show abstract

Mechanistic understanding of microstructure formation during synthesis of metal oxide/carbon nanocomposites

Abstract: Nanocomposite materials consisting of metal oxide and carbon are of interest as electrode materials for both high rate intercalation-type and high capacity conversion-type charge storage processes. Facile synthesis processes like...

Cited by 3 publications

References 50 publications

ZnO doped C: Facile synthesis, characterization and photocatalytic degradation of dyes

ZnO doped C: Facile synthesis, characterization and photocatalytic degradation of dyes

MoOxNWs with mechanical damage – oriented synergistic photothermal / photodynamic therapy for highly effective treating wound infections

Analysis of Battery-like and Pseudocapacitive Ion Intercalation Kinetics via Distribution of Relaxation Times

Contact Info

Product

Resources

About