CoS2-decorated ionic liquid-functionalized graphene as a novel hydrazine electrochemical sensor

Chemically synthesized chevron-like graphene nanoribbons for electrochemical sensors development: determination of epinephrine

“…S1 . The measured peak current is related with the electrochemical surface area through the Randles–Sevick equation 48 , 49 where Ip is the measured peak current, n the number of electrons, A the electrochemical surface area, D the diffusion coefficient of Ru(NH 3 ) 6 2+/3+ (7.9 × 10 –6 cm 2 s −1 at 22 °C 50 ), v the scan rate, and C the concentration of the redox compound. From the slope of the corresponding I p versus v 1/2 plots (Supplementary Fig.…”

The synthesis of graphene oxide covalently linked with nickel tetraamino phthalocyanine: A photoelectrochemical sensor for the analysis of rifampicin irradiated with blue light

“…[20][21][22] In particular, phthalocyanine (Pc) is an organic ligand with a porphyrin-like structure [23,24] forming numerous macrocyclic metal complexes, which have recently emerged as promising materials for catalytic dehydrogenation, photoelectric conversion, biological simulation, and fuel cell operation due to exhibiting excellent catalytic activity and photochemical, thermal, and chemical stability. [33][34][35] The abundance of oxygenated functional groups (e.g., carboxyl, epoxy, and hydroxy) in GO [36] makes it more reactive than graphene. The amino groups of NiTAPc allow it to be covalently linked with graphene oxide (GO) [29] to form a highly oxidized carbon material with large surface areas by using the modified Hummer's method.…”

“…[30][31][32] The application of carbon material in electrochemical sensing has been widely investigated. [33][34][35] The abundance of oxygenated functional groups (e.g., carboxyl, epoxy, and hydroxy) in GO [36] makes it more reactive than graphene. [37,38] In our previous reports, [29,39] modification with NiTAPc (Scheme 1) could enhance the PEC activity, sensitivity, stability, and selectivity of GO toward RIF detection, [29,39] revealing that the thus obtained NiTAPc-functionalized GO (NiTAPc-GO) exhibits enhanced adsorptive and optical properties [40] together with the well-pronounced photoconductivity typical of Pc derivatives.…”

Environmental separation and enrichment of gold and palladium ions by amino-modified three-dimensional graphene

“…Graphene-based materials have been extensively studied in applications such as electrochemical catalysis, 14,15 energy storage, 16,17 electrochemical sensors, [18][19][20][21][22] and other aspects. Three-dimensional graphene (3DG) is a recently developed three-dimensional structure carbonaceous material, constructed with small lamellar-size graphene.…”