Nanofluid Based on Carbon Dots Functionalized with Ionic Liquids for Energy Applications

Abstract

The development of materials that can help overcome the current limitations in energy storage and consumption is a pressing need. Recently, we developed non-Newtonian nanofluids based on non-toxic, carbon nanoparticles (NPs), carbon dots (Cdots) functionalized with ionic liquids. Here, we wanted to prove that these new nanofluids are, not only interesting as possible electrolytes, but also as new organic/inorganic hybrid separators. As such, we developed an entrapment method using poly(vinyl alcohol) (PVA). Indeed, the highly conductive Cdots were successfully retained inside the membrane even upon the application of several wetting/drying cycles. Moreover, the morphological characteristics did not change upon wetting/drying cycles and remained constant for more than four months. These nanofluids could be an interesting approach to tackle some of the current problems in the fields of solid-state batteries, and energy storage, among others.

Carbon Dots: An Emerging Smart Material for Analytical Applications

“…Highly conductive Cdots, Cdots/[Bmim]Cl/[Tmi][Trif] and CdotsCHI/[Bmim]Cl/[Tmi][Trif], could be entrapped in poly(vinyl alcohol) membrane, which exhibited high proton conductivity. Moreover, the nanofluid’s features remain constant for four months, even on wetting/drying cycles [ 81 ]. One of the most common applications of CDs is in the field of photocatalysis.…”

Accelerated ultraviolet aging of structural and luminescent properties of the ureasil-polyether hybrid materials U-PEO:Eu3+ and U-PPO:Eu3+

“…The FTIR spectra of 50 μm thick OIH films, either undoped or doped with Eu 3+ at [O carb ]/[Eu 3+ ] = 3, are compared in Figure 2. Irrespective of the nature and chain length of the PE, the spectra of all the undoped OIHs presented an envelope composed of three components in the amide I region, at 1717-1721 (weak), 1678-1694 (average), and 1634-1641 cm -1 (intense), together with a single intense band at 1559-1564 cm -1 in the amide II region [15,19,47,48]. Comparison of the spectra evidenced that the changes induced by Eu 3+ doping could be classified into two families.…”