Now showing items 1-10 of 12
Ultrasensitive Profiling of Metabolites Using Tyramine-Functionalized Graphene Quantum Dots
Graphene quantum dots (GQDs) are emerging fluorescence reporters attractive for optical sensing, owing to their high photostability, highly tunable photoluminescence, molecular size, atomically thin structure, biocompatibility, ...
Graphene quantum dots for ultrasensitive detection of acetylcholinesterase and its inhibitors
Graphene quantum dots (GQDs) are emerging zero-dimensional materials promising a wide spectrum of novel applications including development of optical sensors. Herein, a GQD-based fluorometric sensor is devised to detect ...
Enzymeless multi-sugar fuel cells with high power output based on 3D graphene–Co3O4 hybrid electrodes
Biofuel cells (BFCs), which use enzymes as catalysts to harvest energy from green and sustainable fuels abundantly producible from biological systems, are promising next-generation energy devices. However, the poor stability ...
Microfiber devices based on carbon materials
Microfiber devices are able to extend the micro/nano functionalities of materials or devices to macroscopic scale with excellent flexibility and weavability, promising a variety of unique applications and, sometimes, also ...
Synthesis of a MnO2–graphene foam hybrid with controlled MnO2 particle shape and its use as a supercapacitor electrode
A simple approach was developed to synthesize the three-dimensional (3D) hybrid of manganese dioxide (MnO2) and graphene foam. The morphology of the MnO2 nanostructures can be readily controlled by the solution acidity. ...
3D grapheme-cobalt oxide electrode for high-performance supercapacitor and enzymeless glucose detection
Using a simple hydrothermal procedure, cobalt oxide (Co3O4) nanowires were in situ synthesized on three-dimensional (3D) graphene foam grown by chemical vapor deposition. The structure and morphology of the resulting 3D ...
3D graphene foam as a monolithic and macroporous carbon electrode for electrochemical sensing
Graphene, a single-atom-thick monolayer of sp2 carbon atoms perfectly arranged in a honeycomb lattice, is an emerging sensing material because of its extraordinary properties, such as exceptionally high specific surface ...
Nanoporous tin oxide photoelectrode prepared by electrochemical anodization in aqueous ammonia to improve performance of dye sensitized solar cell
In this work, a nanoporous thin film consisting of sieve-like tin oxide (SnO2) sheets was prepared by anodization of tin foil in aqueous ammonia and applied as a photoelectrode for dye-sensitized solar cell (DSSC). Compared ...
A grapheme-cobalt oxide based needle electrode for non-enzymatic glucose detection in micro-droplets
A novel graphene–cobalt oxide hybrid needle-like electrode was fabricated for non-enzymatic glucose detection. Taking advantage of its small size, the needle electrode can probe glucose in a micro-droplet with high sensitivity.
Heteroatom-doped graphene materials: syntheses, properties and applications
Heteroatom doping can endow graphene with various new or improved electromagnetic, physicochemical, optical, and structural properties. This greatly extends the arsenal of graphene materials and their potential for a ...