Bioelectrocatalytic current based on direct heterogeneous electron transfer reaction of glucose oxidase adsorbed onto multi-walled carbon nanotubes synthesized on platinum electrode surfaces

A novel biosensor using entangled carbon nanotubes layer grown on an alumina substrate by CCVD of methane on FeOx–MgO

“…Efforts to this end have involved the chemical modification of GOx with electron-relay groups [13][14][15], the immobilization of the enzyme into biopolymer matrix [12,16] or silicon material [17][18][19] and the adsorption of GOx onto different nanomaterials, such as Au nanoparticles [20,21] and carbon nanotubes (CNTs) [22][23][24][25][9][10]. Such surface modifications promote the direct electrochemistry of GOx and facilitate the bio-sensing application for glucose detection.…”

“…Recently, the combination of CNTs and GOx is receiving considerable interest because of their unique properties [25][26][27][28][29] for glucose biosensor with fast response time and high sensitivity [30,31].…”

Catalytic Current Based on Direct Electron Transfer Reactions of Enzymes Immobilized onto Carbon Nanotubes

“…It is thought that CNTs can communicate with the enzyme redox centers as molecular wires because of their small diameters and conductivities. In fact, direct electron transfer reactions between enzymes and CNTs have been previously reported (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). In this study, we observed for the first time that the direct electron transfer reaction of glucose oxidase (GOX) immobilized onto CNTs modified electrode at the redox potential of flavin adenine dinucleotide as a prosthetic group of GOX under physiological pH values.…”

Interfacial electron transfer of glucose oxidase on poly(glutamic acid)-modified glassy carbon electrode and glucose sensing

“…The DET-based glucose sensor has also been controversial since it depends on the specific conditions and setups of the experiments [14,15]. Despite a large number of publications suggesting that the GOx can undergo DET on modified electrodes, such as ZnO nanotubes [16], nanostructured gold [17], carbon ionic liquid electrode [18], mesoporous carbon M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 FDU-15 [19], carbon paste [20,21], graphene modified electrode [10,[22][23][24], carbon nanotubes [25][26][27], three-dimensional porous zirconium phosphate-carbon aerogel composite [28], TiO 2 -graphene/nickel oxide nanocomposite [29], multi-walled carbon nanotubes/gold nanorods composite modified electrode [30] multi-walled carbon nanotubes synthesized on platinum electrode [31] and poly-phenanthroline modified glassy carbon electrode [32]. But, there is only a little of publications [31] which undergoing the DET.…”