Graphene nanoplatelets and other 2D-materials as protective means against the fading of coloured inks, dyes and paints

Abstract

The present work demonstrates the ability of graphene nanoplatelets (GNPs) and other two-dimensional materials (2DMs) like tungsten disulfide (WS2), molybdenum disulfide (MoS2) and hexagonal boron nitride (hBN) to act as...

Comparison study between two different precursors of RGO/AuNPs one pot synthesis

“…Firstly, RGO formations were validated by GO's absorption peak shifting from 234 nm to 246 nm in RGO-AA/AuNPs spectrum and materialisation of RGO peak at 250 nm in RGO-DHA/AuNPs spectrum. These peaks correspond to π-π * transition related to C=C bond in an aromatic ring of the graphene and their observation is a strong indicator for RGO [18,22]. The intensity of RGO peak in figure 2(b) is comparatively smaller, implying that there are low percentage of RGO compared to sucrose precursor present in the measured sample.…”

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

“…Additionally, Kotsidi et al demonstrated that the use of graphene and GRMs as additives in inks and paints hinders fading effects with a protection factor reaching ≈40% (Figure 3B). [116] The authors identified different mechanisms of action for the different types of graphene adopted. Graphene nanoplatelets act thanks to the synergy between two main actions: preventing oxidation due to the absorption of the radiation in the UV range and scavenging free radicals, such as OH • .…”

Exceptionally large fracture strength and stretchability of 2D ReS2 and ReSe2

“…Importantly, these values are also much larger than the maximal strain reported for silicon (∼2%) and larger than the maximal strain of polydimethylsiloxane (PDMS) and polyimide (PI) (∼7%) that are commonly used in flexible electronics. Recent studies demonstrated that the stretchability of 2D materials is attractive for many high-end applications, including flexible photodetectors, 56 electronic skin, 57 strain sensors, 58 and stretchable transistors. 59 Thus, the outstanding stretchability of ReS 2 and ReSe 2 alongside its optoelectronic properties makes them promising candidate materials for advanced flexible devices.…”