Monitoring of Chemical Risk Factors for Sudden Infant Death Syndrome (SIDS) by Hydroxyapatite-Graphene-MWCNT Composite-Based Sensors

Abstract

Sensing properties of chemical sensors based on ternary hydroxyapatite-graphene-multiwalled carbon nanotube (HA-GN-MWCNT) nanocomposite in the detection of chemical substances representing risk factors for sudden infant death syndrome (SIDS), have been evaluated. Characterization data of the synthesized composite have shown that the graphene-MWCNT network serves as a matrix to uniformly disperse the hydroxyapatite nanoparticles and provide suitable electrical properties required for developing novel electrochemical and conductometric sensors. A HA-GN-MWCNT composite-modified glassy carbon electrode (HA-GN-MWCNT/GCE) has been fabricated and tested for the simultaneous monitoring of nicotine and caffeine by cyclic voltammetry (CV) and square wave voltammetry (SWV), whereas a HA-GN-MWCNT conductive gas sensor has been tested for the detection of CO2 in ambient air. Reported results suggest that the synergic combination of the chemical properties of HA and electrical/electrochemical characteristics of the mixed graphene-MWCNT network play a prominent role in enhancing the electrochemical and gas sensing behavior of the ternary HA-GN-MWCNT hybrid nanostructure. The high performances of the developed sensors make them suitable for monitoring unhealthy actions (e. g. smoking, drinking coffee) in breastfeeding women and environmental factors (bad air quality), which are associated with an enhanced risk for SIDS.

Marine biological macromolecules as matrix material for biosensor fabrication

“…By monitoring the reduction signal of the bio‐catalytically generated quinone species at −0.2 V, the constructed biosensor was used to identify phenolic chemicals (vs. saturated calomel electrode). Sudhan et al (2019) utilized the tannery HAp‐graphene multiwalled carbon nanotube's sensing capability to detect a chemical that represents risk factors for sudden infant death syndrome (SIDS). This sensor helps in estimating the risk factors associated with SIDS.…”

LoRa Sensor Network Development for Air Quality Monitoring or Detecting Gas Leakage Events

“…Conversely, chemoresistors employing carbon nanomaterials (graphene and carbon nanotubes) have been suggested as an alternative to detect low concentrations of some air pollutants at ppb to ppm levels. These nanomaterials present favourable electronic properties and can be easily modified or functionalised to reach remarkable sensitivity and acceptable selectivity towards air pollutants [ 31 , 32 , 33 ]. In addition, carbon nanomaterial chemoresistors can be operated slightly above or even at room temperature, which allows reducing power consumption in portable solutions, leading to low-power devices [ 32 , 34 ].…”

Electrochemical Sensing of Serotonin by a Modified MnO2-Graphene Electrode

“…However, its relatively poor electrical conductivity usually demands the addition of conductive supportive matrix (like graphene) to enhance the charge transfer rate. Graphene, as a two-dimensional carbonaceous material, is the most accredited in the field of electrochemical sensors due to its strong interaction and increased contact area which greatly promote the electrocatalyst stability and give a high electrical conductivity [22]. Recently, much research has been focused on coupling of MnO 2 with graphene to form hybrid material with enhanced performance as compared to their individual counterparts.…”