Journal: Nano Select

Abbreviation

Publisher

Wiley-VCH

Journal Volumes

ISSN

2688-4011

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2021 - 20252
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Publications 1 - 2 of 2
  • A microwave-based one-pot process for homogeneous surface coating: improved electrochemical performance of Li(Ni1/3Mn1/3Co1/3)O2 with a nano-scaled ZnO:Al layer
    Item type: Journal Article
    Wolff, Michael; Lobe, Sandra; Dellen, Christian; et al. (2021)
    Nano Select
    In this article, a versatile process based on microwave-assisted sol–gel synthesis is introduced in order to apply a surface coating on cathode material for lithium-ion batteries. Here, a nano-scaled ZnO:Al (AZO) layer is coated homogeneously onto Li(Ni1/3Mn1/3Co1/3)O2 (NMC111) powder at temperatures below 210°C within a few minutes. In contrast to other wet-chemical coating techniques, the method described here is conducted in a one-pot reaction and does not require a post-annealing step at elevated temperatures. Investigations via high resolution transmission electron microscopy (HR-TEM), scanning transmission electron microscopy (STEM) and inductively-coupled plasma optical emission spectroscopy (ICP-OES) promote a thorough understanding of coating microstructure and quality in dependence of reaction temperature, duration and precursor concentration. The AZO protective coating on NMC111 significantly reduces capacity fading during cycling in the voltage range of 3.0-4.5 V. Furthermore, applying optimal quantities of the coating agent on NMC111 lead to enhanced specific capacities compared to the uncoated material.
  • Plasmonic Hafnium Nitride Nanoparticle-Decorated Graphitic Carbon Nitride for Plasmon-Enhanced Photocatalytic Dye Degradation
    Item type: Journal Article
    Soylukan, Caner; Hamedani, Ali Ansari; Günaydin, Beyza Nur; et al. (2025)
    Nano Select
    Photocatalytic dye degradation under visible light irradiation is restricted by the poor light absorption and the rapid recombination of photogenerated electron-hole pairs in traditional materials, such as graphitic carbon nitride (g-CN), hindering their practical applications. In this study, a plasmonic hafnium nitride (HfN)-decorated graphitic carbon nitride nanocomposite (HfN@g-CN) was developed by incorporating plasmonic HfN nanoparticles (NPs) into g-CN. The incorporation of plasmonic HfN NPs enhanced visible light absorption and facilitated efficient electron transfer. Moreover, SEM and TEM analyses confirmed the uniform distribution of HfN on the g-CN surface. The photocatalytic activity was tested during Rhodamine B (Rh B) dye degradation upon visible light irradiation and achieved a degradation rate of 3.7 x 10⁻³ g⋅h⁻¹⋅g⁻¹ catalyst, which is 3.7 times higher than that for pure g-CN. These findings highlight the potential of the developed plasmonic HfN@g-CN nanocomposite as efficient and stable photocatalysts for practical applications in environmental remediation and solar-driven chemical processes.
Publications 1 - 2 of 2