Titanium dioxide-graphene composite electrochemical sensor for detection of hexavalent chromium

Soft template-assisted copper-doped sodium dititanate nanosheet/graphene oxide heterostructure for photoreduction of carbon dioxide to liquid fuels

“…S1(d) †) provides an intense peak at 12.2 , a broad peak at 25.6 , and a small peak at 43.4 . The peaks at 12.2 and 43.4 represent the (001) and (100) planes of the GO, 24,28 while the broad peak at 25.6 marks the presence of reduced graphene oxide (rGO). 30 The FTIR spectrum (Fig.…”

“…It is clear that with no assistance from the NaOH, TiO 2 takes the form of nanoparticles with diameter sizes ranging from 3 to 11 nm. 7,24,32 CTN (Fig. 2(d)) appears as a combination of nanosheets and nanoparticles, in which the nanoparticle has an average size of 6.4 AE 1.8 nm and nanosheets provide an average size of 51.7 AE 18.7 Â 60.1 AE 26.5 nm 2 .…”

“…4,13,15,23 Graphene is a superior choice for one-half of the 2D-2D heterostructure since it has a good charge transfer ability, chemical stability, and outstanding light absorption properties. 2,24 It can be synthesized following a chemical exfoliation approach, yielding GO, which is a few layers of graphene sheet with carbon-hydrogen-oxygen functional groups. The functional groups serve as defects in the nanostructure and provide sites for the precipitation and immobilization of metal/metal oxide nanostructures.…”

Electrochemical Sensor Based on a Composite of Reduced Graphene Oxide and Molecularly Imprinted Copolymer of Polyaniline–Poly(o-phenylenediamine) for Ciprofloxacin Determination: Fabrication, Characterization, and Performance Evaluation

“…GO can be chemically reduced to remove some functional groups and form rGO, a semiconductive material. rGO is a popular transducer and has been demonstrated as a sensitive element for charge-transfer enhancement in electrochemical sensors. − …”

Extending Silver Nanowire Modified Electrodes to Industrial Zinc Electrolyte for Copper Ion Detection

“…14 But due to their toxicity, volatility, and the costs associated with their disposal, Mercury-based electrodes are no longer the best choice for sustainable applications, so people are turning to solid electrodes such as graphite, glassy carbon, metal, and metal oxide electrode. 15,16 Electrode modification has become an essential step to improve the sensing performance of solid-state electrodes. 17,18 Chemically modified electrodes based on metallic nanowires have been used to improve the performance of electrochemical sensors.…”