Highly selective detection of cellular guanine and xanthine by polyoxometalate modified 3D graphene foam

Chitosan assisted synthesis of 3D graphene@Au nanosheet composites: catalytic reduction of 4-nitrophenol

“…3DG was synthesized according to previous work via CVD growth using ethanol as carbon source. 2,36,37 3D structure of graphene is clearly shown in Fig. 1a, which will facilitate the mass transfer during our next heterogeneous catalytic reaction.…”

“…3DG is synthesized according to our previous method. 36,37 3DG was obtained by etching away nickel foam in 1 M FeCl 3 aqueous solution (1 M HCl). 3DG@Au: 3DG foam (1 Â 1 cm) was soaked in 2 mL water containing 1 mg mL À1 HAuCl 4 $3H 2 O, and the mixture was incubated for 1 h at r.t. 100 mL 0.1 M NaBH 4 was injected drop by drop into the above solution to initiate the formation of Au nanostructure.…”

Fullerene Black Modified Screen Printed Electrodes for the Quantification of Acetaminophen and Guanine

“…Figure shows the quantitative calibration plot (in presence of different concentration values of G, performed by DPV and the corresponding quantitative parameters are reported on Table . FB‐SPE shows the widest range of linearity for the analytical responses to the concentration of G; a good sensitivity (lower than that exhibited by the as reported Graphitized Mesoporous Carbon (GMC) modified GCE, probably for the highest surface nominal area exhibited by the GMC electrodic materials) and the lowest detection limit, if compared with other electrochemical devices reported in literature , and summarized in Table . Also the FB‐SPE show the best intra‐ and inter‐electrodes reproducibility, and the fastest response time (useful to carry out a real time analysis of a large number of samples during the same day, applying disposable, miniaturized and partially automated electrochemical sensors, modified with functionalized fullerenes).…”

An Enzyme Assisted Electrochemical Detection System of Purine Intracellular Utilizing MWCNTs-IL Modified Glassy Carbon Electrode

“…In 2014, two new modified electrode have been prepared by us, in one of which the overlapped signal of A/H was further separately detected as two signals, at the same time, the overlapped signal of G/X can't be separated [23]. Similarly, the overlapped signal of G/X was also separately detected as two signals with the overlapped signal of A/H in the other modified electrode [24]. However, the two overlapped signals have been unable to be separated completely as four independent signals.…”