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author:

Han, L. (Han, L..) [1] | Zeng, L. (Zeng, L..) [2] | Wei, M. (Wei, M..) [3] | Li, C.M. (Li, C.M..) [4] | Liu, A. (Liu, A..) [5]

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Scopus

Abstract:

It is of great scientific and practical significance to explore inorganic mimetic enzymes to replace natural enzymes due to their instability and high cost. Herein we present an interesting discovery that a V2O3-ordered mesoporous carbon composite (V2O3-OMC) has a novel peroxidase-like activity towards fast redox reaction of typical peroxidase substrates H2O2 and 2,2′-azino-bis(3-ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt (ABTS). Due to the small size effect and large surface area of V2O3 nanoparticles supported by OMC, V2O3-OMC exhibited excellent catalytic performance with a kcat of 1.28 × 104 s-1, KM (ABTS) of 0.067 mM and KM (H2O2) of 0.16 mM, and a significantly higher catalytic efficiency (kcat/KM) towards the oxidation of ABTS in comparison with the natural peroxidases. Furthermore, the Ping-pong BiBi mechanism was proposed to explain the catalytic reaction by V2O3-OMC. Based on this highly active biomimetic peroxidase and the colorimetric detection of H2O2, a facile analytical method was developed to detect glucose by using V2O3-OMC and glucose oxidase, which had a wide linear range (0.01-4 mM glucose), good selectivity and reliability for successful detection of various real samples. Thus, the novel V2O3-OMC peroxidase mimetic holds great promise for broad potential applications. © The Royal Society of Chemistry 2015.

Keyword:

Community:

  • [ 1 ] [Han, L.]Laboratory for Biosensing, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao, 266101, China
  • [ 2 ] [Han, L.]University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
  • [ 3 ] [Zeng, L.]Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou Fujian, 350007, China
  • [ 4 ] [Wei, M.]Institute of Advanced Energy Materials, Fuzhou University, Fuzhou Fujian, 350002, China
  • [ 5 ] [Li, C.M.]Institute for Clean Energy and Advanced Materials, Southwest University, Chongqing, 400715, China
  • [ 6 ] [Liu, A.]Laboratory for Biosensing, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao, 266101, China
  • [ 7 ] [Liu, A.]University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China

Reprint 's Address:

  • [Wei, M.]Institute of Advanced Energy Materials, Fuzhou UniversityChina

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Source :

Nanoscale

ISSN: 2040-3364

Year: 2015

Issue: 27

Volume: 7

Page: 11678-11685

7 . 7 6

JCR@2015

5 . 8 0 0

JCR@2023

ESI HC Threshold:200

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 100

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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