3D graphene network@WO₃ nanowire composites: a multifunctional colorimetric and electrochemical biosensing platform

Abstract

A three dimensional graphene network (3DGN)@WO3 nanowire (NW) sensor is proposed which can perform colorimetric and electrochemical sensing techniques to detect H2O2, ascorbic acid and dopamine. The 3DGN provides three functions: anchoring, separating, conducting, while the WO3 NWs maximize surface area and catalyse reactions.

Carbon Nanozymes: Enzymatic Properties, Catalytic Mechanism, and Applications

“…Besides their intrinsic enzymatic activity,CNMs and their derivatives can be also utilized as modulators to further improve the catalytic activity and stability of artificial peroxidase.M any classic artificial peroxidases,f or instance, metal oxides (for example,F e 3 O 4 , FeO x H, [94] Fe 2 O 3 , [95][96][97] Co 3 O 4 , [98][99][100] ZnO, [101] CuO, [102][103][104][105] Cu 2 O, [106] CeO 2 , [92] Co-Fe 2 O 4 , [107,108] and WO 3 [109] ), metal hydroxide, [110] metal chalcogenides (for example,C oSe 2 , [111] CuS, [112,113] and MoS 2 [114] ), metal nanoparticles (for example,P t, [92,[115][116][117][118][119][120][121] Pd, [82,88,122,123] Au, [84,88,[124][125][126][127][128][129][130][131][132][133]…”

Hydrothermal preparation and supercapacitive performance of flower-like WO3·H2O/reduced graphene oxide composite

“…Amongst, graphene, a flat monolayer of carbon atoms arranged in a 2D honeycomb lattice, has been confirmed to be an ideal candidate to fabricate composites due to its fascinating properties such as superior electrical conductivity, large surface area and excellent mechanical flexibility [31]. To date, a variety of WO 3 /graphene composites have been successfully synthesized and their photo/electrochemical and catalytic properties have been widely studied [32][33][34][35][36][37][38]. However, the incorporation of hierarchical WO 3 nanostructures with graphene sheets to prepare composites and their electrochemical performances as supercapacitor electrodes have been few investigated [26].…”

Effect of Amine Adlayer on Electrochemical Uric Acid Sensor Conducted on Electrochemically Reduced Graphene Oxide

“…Graphene, the thinnest and strongest carbon material, has unusual properties such as high thermal conductivity, high mechanical stiffness, and extraordinary electronic transport . Graphene oxide (GO), a family member of graphene, can be obtained through the oxidation of graphite.…”

“…Interestingly, the conductivity of GO can be highly improved by a reduction process, resulting in reduced grapheme oxide (RGO), due to the restoration of graphitic sp 2 bonds . And these prominent characteristics of graphene can be useful in electrochemical biosensor applications or in related areas …”