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Zhang Q.,Liaoning Prov Key Laboratory For Green Synthesis And Preparative Chemistry Of Advanced Materials | Zhang Q.,Liaoning University | Yang S.,Liaoning Prov Key Laboratory For Green Synthesis And Preparative Chemistry Of Advanced Materials | Yang S.,Liaoning University | And 9 more authors.
Nanotechnology | Year: 2011

A novel hybrid nanomaterial (GO-MWNTs) was explored based on the self-assembly of multiwall carbon nanotubes (MWNTs) and graphene oxide (GO). Compared with pristine MWNTs, such a nanocomposite could be well dispersed in aqueous solution and exhibit a negative charge. Driven by the electrostatic interaction, positively charged horseradish peroxidase (HRP) could then be immobilized onto GO-MWNTs at the surface of a glassy carbon (GC) electrode to form a HRP/GO-MWNT/GC electrode under mild conditions. TEM was used to characterize the morphology of the GO-MWNT nanocomposite. UV-vis and FTIR spectra suggested that HRP was immobilized onto the hybrid matrix without denaturation. Furthermore, the immobilized HRP showed enhanced direct electron transfer for the HRP-Fe(III)/Fe(II) redox center. Based on the direct electron transfer of the immobilized HRP, the HRP/GO-MWNT/GC electrode exhibited excellent electrocatalytic behavior to the reduction of H2O 2 and NaNO2, respectively. Therefore, GO-MWNTs could provide a novel and efficient platform for the immobilization and biosensing of redox enzymes, and thus may find wide potential applications in the fabrication of biosensors, biomedical devices, and bioelectronics. © IOP Publishing Ltd. Source


Ji X.,CAS Institute of Chemistry | Ji X.,Liaoning Prov Key Laboratory For Green Synthesis And Preparative Chemistry Of Advanced Materials | Zhang Q.,Liaoning Prov Key Laboratory For Green Synthesis And Preparative Chemistry Of Advanced Materials | Liang F.,CAS Institute of Chemistry | And 7 more authors.
Chemical Communications | Year: 2014

Ionic liquid functionalized Janus nanosheets are synthesized by selective treatment of the imidazolin terminated side of Janus nanosheets while the other side is preserved. The Janus performance of the nanosheets and thus emulsion stability are reversibly triggered by anion exchange. © the Partner Organisations 2014. Source

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