This article presents MoS ₂ -based FETs as potential Hg ²⁺ sensors, providing a genuine insight into the affinity between heavy metal ions and defectiveness in 2D materials. The sensors markedly displayed high selectivity, sensitivity and reversibility.

Li–S batteries (LSBs) comprising two Kagome imine COFs as modifiers for Celgard separators are fabricated. The work highlights the cooperative effect of polysulfide trapping, Li⁺ sieving and electrocatalytic properties for high-performance LSBs.

A gold nanoparticles transparent electrode was realized by chemical reduction. This work aims to compare the transparent gold nanoparticles electrode with a more commonly utilized gold-film-coated electrode in order to investigate its potential use as counter-electrode (CE) in dye-sensitized solar cells (DSSCs). A series of DSSC devices, utilizing I⁻/I³⁻ and Co(III)/(II) polypyridine redox mediators [Co(dtb)3]³⁺/²⁺; dtb = 4,4′ditert-butyl-2,2′-bipyridine)], were evaluated. The investigation focused firstly on the structural characterization of the deposited gold layers and then on the electrochemical study. The novelty of the work is the realization of a gold nanoparticles CE that reached 80% of average visible transmittance. We finally examined the performance of the transparent gold nanoparticles CE in DSSC devices. A maximum power conversion efficiency (PCE) of 4.56% was obtained with a commercial I⁻/I³⁻-based electrolyte, while a maximum 3.1% of PCE was obtained with the homemade Co-based electrolyte.