Application of MWCNTs/Fe3O4 modified electrode under inducing adsorption for rapid and sensitive detection of cadmium in a lab-on-valve system

Development of a novel vinylene‐linked covalent organic framework decorated with multi‐walled carbon nanotubes for electrochemical detection of tryptophan, uric acid, and 8‐hydroxy‐2′‐deoxyguanosine

“…In this study, V‐COF‐1 was combined with MWCNTs to test its adsorption capacity for analytes. MWCNTs have the advantages of providing conductive paths, [ 28 ] high thermal stability, greater active surface area, [ 29 ] extraordinary adsorption performance [ 30 ] and greater electron transfer, [ 31 ] and they can effectively improve adsorption analyte and method sensitivity. Upon the addition of V‐COF‐1, the agglomeration effect of MWCNTs is completely disabled.…”

Green synthesized nanospherical silver for selective and sensitive sensing of Cd2+colorimetrically

“…4 In general, human exposure to and contamination by Cd is possible due to environmental sources such as air, water, soil and food. 5 According to Food and Agriculture Organization, Environmental Protection Agency and World Health Organization, Cd is immediate concern due to the fact that it easily enters into the food chain and imposes severe human health hazards. The drinking water guideline value recommended for Cd is strictly restricted to 0.003 to 0.005 mg L À1 .…”

Rapid removal of cadmium ions using green-synthesized Fe3O4 nanoparticles capped with diethyl-4-(4 amino-5-mercapto-4H-1,2,4-triazol-3-yl)phenyl phosphonate

“…[29][30][31] However, practical difficulties in separation processes (e.g., gravitational sedimentation, centrifugation, or ltration) involving common nanoparticles have limited their widespread application. 32 Magnetic nano-composites have been widely used in various applications including wastewater treatment, 33,34 biomedical drug delivery, 35 magnetic resonance imaging, 36 ferro-uids technology, 37 catalysis, 38 and lithium ion batteries, 39 owing to their interesting magnetic behavior. Hence, magnetic adsorbents like porous Fe 3 O 4 have been considered ideal water treatment materials to remove heavy metals because of their low operating cost, facile magnetic separation, high adsorption capacities, and thermal stabilities.…”