Hierarchically Assembled Two‐dimensional Hybrid Nanointerfaces: A Platform for Bioelectronic Applications | Zendy

Kumari Renu | Zendy; Osikoya Adeniyi Olugbenga | Zendy; Anku William Wilson | Zendy; Shukla Sudheesh Kumar | Zendy; Govender Penny Poomani | Zendy

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Hierarchically Assembled Two‐dimensional Hybrid Nanointerfaces: A Platform for Bioelectronic Applications

Author(s) -

Kumari Renu,

Osikoya Adeniyi Olugbenga,

Anku William Wilson,

Shukla Sudheesh Kumar,

Govender Penny Poomani

Publication year - 2018

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201800338

Subject(s) - biosensor , cyclic voltammetry , graphene , detection limit , nanotechnology , horseradish peroxidase , materials science , colloidal gold , nanoparticle , molybdenum disulfide , conjugated system , chemistry , electrochemistry , electrode , polymer , organic chemistry , chromatography , composite material , metallurgy , enzyme

We introduce a hybrid two‐dimensional nanointerface structure for bioelectronic systems. We fabricated smart hierarchically self‐assembled 2D electrobiocatalytic interface system based on the combination of gold nanoparticles doped graphene oxide (GO)‐molybdenum disulfide (MoS 2 ) layered nanohybrid, conjugated with poly (N‐isopropylacrylamide, PNIPAAm) resulting in GO/AuNPs/MoS 2 /PNIPAAm interface. Horseradish peroxidase (HRP) was subsequently immobilized on the GO/AuNPs/MoS 2 /PNIPAAm interface through electrostatic interactions giving GO/AuNPs/MoS 2 /PNIPAAm/Peroxidase electrobiocatalytic interface system as a platform for electrobiocatalysis reactions for biosensing and bioelectronic applications. The electrobiocatalytic activity of the nanohybrid interface structure was studied using hydrogen peroxide (H 2 O 2 ) as a model analyte. Cyclic Voltammetry showed diffusion controlled electron transfer properties at the interface. The fabricated bioelectrode exhibits a wide linear response to the detection of H 2 O 2 from 1.57 to 11.33 mM, with a detection limit of 3.34 mM (S/N=3) and a capacitance of 8.6 F/cm 2 .

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