Low-Temperature Chemical Synthesis of CoWO₄ Nanospheres for Sensitive Nonenzymatic Glucose Sensor

Abstract

Herein, we report a novel and facile synthesis of CoWO4 nanospheres for the nonenzymatic glucose sensor application. The detailed synthesis and material characterizations were reported. Interestingly, the glucose sensor performance of the CoWO4 nanospheres exhibits a low detection limit as low as 0.7 μM with an ultrahigh sensitivity of 1416.2 μA mM–1 cm–2. The unique properties with the excellent electrochemical performance achieved by such facilely prepared CoWO4 nanospheres render their prospective applications as low-cost and stable nonenzymatic glucose sensors.

Block‐Copolymer‐Assisted Electrochemical Synthesis of Mesoporous Gold Electrodes: Towards a Non‐Enzymatic Glucose Sensor

“…It indicates that there is a strong electron transfer between the redox reaction center and the electrode. Figure c displays the linear relationship between the peak current versus the square root of the scan rate with a correlation coefficient of 0.999, showcasing a quasi‐ideal diffusion‐controlled process …”

Bifunctional electro-catalytic performances of CoWO4 nanocubes for water redox reactions (OER/ORR)

“…Synthesis of CoWO 4 nanoparticles (particle size from 30 to 200 nm) were also reported elsewhere using the co-precipitation 23,25,47 and hydrothermal methods. 28,29 Porous CoWO 4 nanobers were reported by Sheng-Hui Liao et al using the electrospinning method followed by ring at high temperature (625 C).…”

A Facile Electrochemical Preparation of Violarite (Ni2FeS4) Nanosheets on Carbon Sheet and its Application towards Non-Enzymatic Glucose Sensing

“…In order to compare the sensing performance of NFS/CS towards glucose with other reported Ni based glucose sensors, a table has been made which is shown in Table S1. From the table, it can be seen that the electrode materials namely Ni 3 S 2 , Ni 3 S 2 /CNT, NiS 2 , NiS, and CoWO 4 showed very high sensitivity value with very low detection limit than that of NFS nanosheets. However, the sensor result showed linearity in a very narrow range of 0.15 mM to 4.5 mM.…”

“…While, the developed sensor in the present study shows good sensor performance in terms of wide linear range encompassing normal blood glucose level (2.3 to 7.7 mM). The presence of wide linear range for NFS/CS has been attributed to the superior catalytic activity to glucose compared with other Ni based nanomaterials …”