High sensitivity self-recovery ethanol sensor based on polyporous graphene oxide/melamine composites

Molecular Patching Engineering to Drive Energy Conversion as Efficient and Environment‐Friendly Cell toward Wireless Power Transmission

“…Figure a illustrates the process of PEDOT:PSS (PP) patching magnetic graphene. Typically, the graphene oxide (GO) prepared by a modified Hummers method exposes abundant and even‐distributed active sites (oxygen‐contain groups) . These active sites aggregated by negative charges introduce iron ions (Fe 3+ and Fe 2+ ), thereby confinedly growing Fe 3 O 4 nanocrystals on the graphene surface in a hybrid form.…”

A reduced graphene oxide–borate compound-loaded melamine sponge/silicone rubber composite with ultra-high dielectric constant

“…The MS has a moderate aperture size and can steadily support the GO sheets, obtaining a continuous GO membrane structure on the skeleton that can contribute to the further construction of an interconnected percolation network. 31 Fig. 3c shows that rGO/ borates are not uniformly coated on the MS skeleton, but loaded onto the MS skeleton in the forms of sheets and blocks.…”

“…The dielectric loss at low frequencies is mainly caused by the DC leakage of the composite material, and the lower the external eld frequency, the more obvious the inuence. 31 Therefore, when the rGO volume fraction exceeded 0.81 vol%, the dielectric loss increased signicantly as compared to that of the pure silicone rubber and the composite obtained using the rGO volume fraction of 0.20 vol%. When the rGO volume fraction was 1.25 vol% or 1.89 vol%, the dielectric loss exhibited a strong frequency dependence and a peak at around 10 5 MHz.…”

State of the Art in Alcohol Sensing with 2D Materials

“…Zhang et al [ 206 ] introduced porous melamine/GO sponge composite (GOMS) for selective ethanol sensing, and the sensor benefits from reasonably fast self-recovery. In order to form the composite, melamine sponge was first cut to size (3 cm 3 ) and dipped into GO solution and pressed until all of the trapped air removed and freeze-dried.…”