Titania (TiO₂)/silica (SiO₂) nanospheres or NSs amalgamated on a pencil graphite electrode to sensel-ascorbic acid electrochemically and augmented NSs for antimicrobial behaviour

Abstract

An electrochemical sensing electrode based on titania (anatase) and silica nanospheres (TiO2@SiO2 NSs) loaded on pencil graphite electrode (TiO2@SiO2NSs/PGE) was fabricated and scrutinized for L-ascorbic acid detection. PGE surface was...

Common Transition Metal Oxide Nanomaterials in Electrochemical Sensors for the Diagnosis of Monoamine Neurotransmitter‐Related Disorders

“…Therefore, the bare electrode offered ~2% lower anodic peak current than that at an Au/TiO 2 . Compared to a bare electrode, the very little (~2 %) or no observable change in the response of [Fe(CN) 6 ] 3−/4− at an Au/TiO 2 , [127] a 75 % higher charge transfer resistance at a screen‐printed carbon electrode/TiO 2 , [131] and a 97 % lower charge transfer resistance at a pencil graphite electrode/TiO 2 [132] were used to infer that TiO 2 NPs either impeded or improve the electron transfer process of [Fe(CN) 6 ] 3−/4− across the surface of the bare electrodes, as depicted in Figure 3g and h. However, when TiO 2 NPs were included as part of a composite involving other nanomaterials or polymers, [127] they enhanced the current response of [Fe(CN) 6 ] 3−/4− by ~77 % at such composite modified electrodes (Figure 3g).…”

A simple and low-cost electrochemical sensor based on a graphite sheet electrode modified by carboxylated multiwalled carbon nanotubes and gold nanoparticles for detection of acyclovir

“…[25][26][27][28][29][30][31][32][33][34][35] In electrochemical research, efficient modifiers including different metal and metal oxide nanoparticles, 36,37 carbon nanomaterials, 38 conducting polymers 39,40 and metal organic frameworks 41,42 have been developed for the modification of electrodes in order to improve the LOD, LDR and their selectivity in determining drug molecules. On the other hand, the most common modified electrodes are those carbon-based electrodes such as the glassy carbon electrode (GCE), 43 carbon paste electrode (CPE), 44 pencil graphite electrode (PGE) 45 and graphite sheet electrode (GSE). 46 To the best of our knowledge, no study has been reported for the determination of ACV by using a graphite sheet electrode (GSE).…”

Prolific intercalation of VO2 (D)/polypyrrole/g-C3N4 as an energy storing electrode with remarkable capacitance

“…9 Secondly, pseudo-capacitors work on a faradaic process through a redox reaction where transfer of charge occurs between electrolyte and electrode. 10 Conducting polymers [11][12][13] and metal oxides 14 are used as electro-active materials. However, pseudocapacitors have been verified to display higher specific capacitance and energy density.…”