Self-template formation of porous Co₃O₄hollow nanoprisms for non-enzymatic glucose sensing in human serum

Abstract

Co3O4 hollow nanoprisms based non-enzymatic glucose sensor were prepared by a self-template process, exhibiting wide linear range, good selectivity and stability, which can directly monitoring blood glucose without any dilution pretreatment.

Zn–Co Bimetallic Zeolitic Imidazolate Frameworks as Nonenzymatic Electrochemical Glucose Sensors with Enhanced Sensitivity and Chemical Stability

“…9,10 In particular, cobalt and its oxides/hydroxides have been utilized to develop glucose sensors with various nanomaterials owing to their good catalytic activity, excellent conductivity, natural abundance, and low cost. 11,12 Metal−organic frameworks (MOFs), a new class of crystalline nanoporous materials characterized by large specific surface areas, regular pore structures, and controllable chemical/physical properties, have been widely applied in gas adsorption, separation, catalysis, and sensing. 13,14 Recently, various MOFs have been used as electrode materials for electrochemical applications owing to the redox activity of metal clusters and the possibility of functionalizing ligands with electroactive species.…”

“…In recent years, the application of noble metals, such as Pt, Pd, Au, and Ag and alloys thereof, has been extensively researched for the development of nonenzymatic glucose sensors owing to their remarkable electrocatalytic activity; however, their high cost and susceptibility to poisoning prevent their widespread applications. Various transition metals and their oxides/hydroxides have attracted increasing attention for the design of nonenzymatic glucose sensors as they are nontoxic and cost-effective. , In particular, cobalt and its oxides/hydroxides have been utilized to develop glucose sensors with various nanomaterials owing to their good catalytic activity, excellent conductivity, natural abundance, and low cost. , …”

Synthesis of Laser‐Induced Cobalt Oxide for Non‐Enzymatic Electrochemical Glucose Sensors

“…In most studies of non‐enzymatic glucose sensors using Co 3 O 4 as a catalyst, the Co 3 O 4 precursor is annealed at a temperature of 300 °C or higher for several hours for the sintering of cobalt oxide nanoparticles [14–20] . In this study we propose a synthesis method that uses a laser to shorten the existing Co 3 O 4 synthesis process, which requires several hours under high‐temperature conditions, to less than 1 ms without high‐temperature conditions using a laser.…”

“…[11][12][13] In most studies of non-enzymatic glucose sensors using Co 3 O 4 as a catalyst, the Co 3 O 4 precursor is annealed at a temperature of 300 °C or higher for several hours for the sintering of cobalt oxide nanoparticles. [14][15][16][17][18][19][20] In this study we propose a synthesis method that uses a laser to shorten the existing Co 3 O 4 synthesis process, which requires several hours under high-temperature conditions, to less than 1 ms without high-temperature conditions using a laser. The PI film and the spin-coated Co-hydrogel absorb the IR energy of the laser and generate a temperature of over 2000 K locally for less than 1 ms. [21] In this process, the residual solvent in the PI film and Co-hydrogel is explosively evaporated to form nanofiber-type graphene with cobalt oxide particles attached to it.…”

Nonenzymatic Glucose Sensor Based on Porous Co3O4 Nanoneedles

“…So far, a series of nanostructured materials based on precious metals and their alloys (such as Pt, Ag, Pd, Au, Pt-Pd, and Pt-Au) have excellent electrochemical catalytic oxidation activity, which has been proved to be used for the electrocatalytic oxidation of glucose [5][6][7][8]. However, due to the scarcity and high cost of these precious metals, the surface of precious metal based materials is usually easily polluted by adsorbed intermediates and chloride ions, which greatly affects the stability and sensitivity of the sensor [9,10]. In view of this, researchers try to develop electrode materials with high performance and low cost for nonenzymatic glucose sensing.…”