Lei Han

Prof. Lei Han

orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 February 2018 in Advanced Functional Materials
Verified
Journal Article
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LHLei Han
Lei Han
HZHaijiao Zhang
Haijiao Zhang
DCDaoyuan Chen
Daoyuan Chen
FLFeng Li
Feng Li

15 June 2015 in ACS Applied Materials & Interfaces
Verified
Journal Article
Open access
LHLei Han
Lei Han
CLCuncheng Li
Cuncheng Li
TZTao Zhang
Tao Zhang
QLQiaolin Lang
Qiaolin Lang
ALAihua Liu
Aihua Liu
As substitutes for natural peroxidases, most nanomaterial-based enzyme mimetics (nanozymes) have unique properties such as high stability, low-cost, large surface area, and high catalytic activity. However, they usually work in acidic conditions and thus impede their real applications. In this work, by modulating the nanostructure, composition, and surface property of the bimetallic materials, the positively charged poly(diallyldimethylammonium)-stabilized [email protected] heterogeneous nanorods (NRs) were developed as synergistic peroxidase-like interfaces, which exhibited high activity over a wide pH range (pH 4.0–6.5) using 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt (ABTS) as the chromogenic substrate. At pH 6.5, the peroxidase-like activity for the [email protected] heterogeneous NRs was stable and optimal within 20–40 °C. Moreover, the [email protected] heterogeneous NRs showed excellent temperature stability and long-term storage stability. Given these characters, the detection of H2O2 at pH 6.5 was proposed on the basis of the [email protected] heterogeneous NRs catalyzing the colorimetric reaction of H2O2 and ABTS, where the oxidized ABTS showed a typical absorption peak at 414 nm. The absorbance at 414 nm was linear with H2O2 concentration from 0.01 to 10 mM. Further, considering that [email protected] heterogeneous NRs and glucose oxidase (GOx) have similar optimal pH for catalytic activities, a novel one-pot method for the detection of glucose was developed by the coupled catalytic reaction using GOx, [email protected] heterogeneous NRs, and ABTS at nearly neutral pH (pH 6.5) and 37 °C. This proposed method had simple and rapid processes, wide linear range (0.05–20 mM), and reliability for the successful analysis of real samples. On the basis of these attractive and unique characteristics, [email protected] heterogeneous NRs can become promising substitutes for peroxidase in analytical chemistry and environmental science.

1 October 2018 in Small
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Journal Article
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HZHaijiao Zhang
Haijiao Zhang
XLXin Liang
Xin Liang
LHLei Han
Lei Han
FLFeng Li
Feng Li

13 May 2020 in Advanced Functional Materials
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Journal Article
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XLXin Liang
Xin Liang
LHLei Han
Lei Han


1 November 2017 in Sensors and Actuators B: Chemical
Verified
Journal Article
Closed access
LHLei Han
Lei Han
JSJianguo Shi
Jianguo Shi
ALAihua Liu
Aihua Liu