Showing papers by "Xinjian Feng published in 2015"

Rhodium Nanoparticle-mesoporous Silicon Nanowire Nanohybrids for Hydrogen Peroxide Detection with High Selectivity

Abstract: Developing nanostructured electrocatalysts, with low overpotential, high selectivity and activity has fundamental and technical importance in many fields. We report here rhodium nanoparticle and mesoporous silicon nanowire (RhNP@mSiNW) hybrids for hydrogen peroxide (H2O2) detection with high electrocatalytic activity and selectivity. By employing electrodes that loaded with RhNP@mSiNW nanohybrids, interference caused from both many electroactive substances and dissolved oxygen were eliminated by electrochemical assaying at an optimal potential of +75 mV. Furthermore, the electrodes exhibited a high detection sensitivity of 0.53 μA/mM and fast response (< 5 s). This high-performance nanohybrid electrocatalyst has great potential for future practical application in various oxidase-base biosensors.

Super-hydrophobic solid-liquid-gas three-phase coexistence bio-enzyme sensor and preparation method thereof

Abstract: The invention discloses a super-hydrophobic solid-liquid-gas three-phase coexistence bio-enzyme sensor and a preparation method thereof. The super-hydrophobic solid-liquid-gas three-phase coexistence bio-enzyme sensor comprises a substrate with surface having super-hydrophobic performance, a catalysis material having hydrogen peroxide catalysis function, and biological enzyme capable of being reacted with a substance to be measured to generate hydrogen peroxide from down to up. By forming a solid-liquid-gas three-phase coexistence state on the surface of the super-hydrophobic material, sufficient oxygen can be provided for supplying the enzymatic reaction, so that the sensor has the characteristics of wide detection scope, low detection limit, fast response speed, accurate detection result, stable performance, easy preparation and low cost.