In situ growth of CuS decorated graphene oxide-multiwalled carbon nanotubes for ultrasensitive H₂O₂ detection in alkaline solution

Abstract

A novel hybrid nanomaterial composed of nanoparticles, nanotubes and nanosheets for electrochemical H2O2 detection.

Copper nanoparticles/polyaniline/molybdenum disulfide composite as a nonenzymatic electrochemical glucose sensor

“…5 (d) displays a plot of glucose concentration (mM) and anodic current (Ip). A linear regression line with Ip (μA) = 27.3x + 76.5 (R 2 = 0.9804), reveals that a diffusion-controlled reaction occurred on the Cu@Pani/MoS 2 electrode surface [ 90 , 91 ]. MoS 2 nano structure improves the electrocatalytic activity because of its high surface area, electron transfer abilities and rapid diffusion of the electrons and ions on the electrode surface, providing active sites for the electrocatalytic reactions during electrochemical glucose oxidation [ 92 ].…”

MWCNT‐Organoimido Polyoxomolybdate Hybrid Material: Analytical Applications for Amperometric Sensing of Hydrogen Peroxide

“…Table 1 also compares the response of non‐enzymatic hydrogen peroxide sensors based on other hybrid materials. Among them, our sensor presents a very competitive performance with lower detection limit than most of them [36–38, 42–44, 48, 56–58], comparable to [39, 40, 45, 46, 50–52] and higher than [15, 41, 47, 53–55]. In general, the sensors that present better detection limits than our sensor, are built with several constituents that can make the preparation of the sensor more time consuming, like MWCNTs dispersed in avidin and Ru [15], GO, Fe 3 O 4 , PAMAM and Pd [41], Ag@Cu 2 O and N‐rGO [47], Pt nanoparticles and polyazure A [53], three‐dimensional CuO inverse opals coated with NiO nanoflowers [54] or Au and Ag nanoparticles in connection with a potential of −0.700 V [55].…”

The role of carbonaceous materials as water channels in membrane sensors together with acrylate polymerized cyclodextrin, for determination of azoxystrobin in canned food

“…Incorporation of carbonaceous matter enhanced the passage of large fungicide molecule across the membrane. The superior electrical conductivity, high surface area and great stability of graphene oxide nanoparticles (GO) and multi-walled carbon nanotubes (CNTs), explained their role in enhancing the sensors sensitivity [23]. On the other side, graphene quantum dots (GQDs) were more preferred in electrochemical biosensing due to their intrinsic low toxicity, high solubility in many solvents, excellent electronic properties, robust chemical inertness, large speci c surface area, abundant edge sites for functionalization, great biocompatibility, low cost, and versatility [24].…”