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Au@Ag Heterogeneous Nanorods as Nanozyme Interfaces with Peroxidase-Like Activity and Their Application for One-Pot Analysis of Glucose at Nearly Neutral pH
Han, Lei1,2,3; Li, Cuncheng4; Zhang, Tao4; Lang, Qiaolin1,2; Liu, Aihua1,2,3
2015-07-08
Source PublicationACS APPLIED MATERIALS & INTERFACES
Volume7Issue:26Pages:14463-14470
Abstract

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 Au@.Ag 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 Au@Ag heterogeneous NRs was stable and optimal within 20-40 degrees C. Moreover, the Au@Ag 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 Au@Ag 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 nrn was linear with H2O2 concentration from 0.01 to 10 mM. Further, considering that Au@Ag heterogeneous NRs and glucose wddase (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, Au@Ag heterogeneous NRs, and ABTS at nearly neutral pH (pH 6.5) and 37 degrees 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, Au@Ag heterogeneous NRs can become promising substitutes for peroxidase in analytical chemistry and environmental science.

SubtypeArticle
KeywordAu@ag Heterogeneous Nanorods Bimetallic Catalysts Peroxidase Mimetics Nearly Neutral Ph Spectrophotometric Detection Of Glucose
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acsami.5b03591
WOS KeywordIRON-OXIDE NANOPARTICLES ; HYDROGEN-PEROXIDE ; ARTIFICIAL ENZYMES ; FE3O4 NANOPARTICLES ; GRAPHENE OXIDE ; HORSERADISH-PEROXIDASE ; MAGNETIC NANOPARTICLES ; CORE/SHELL NANORODS ; GOLD NANOPARTICLES ; CATALYTIC-ACTIVITY
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000357963700034
Citation statistics
Cited Times:83[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/6516
Collection生物传感技术团队
Affiliation1.Chinese Acad Sci, Lab Biosensing, Qingdao 266101, Peoples R China
2.Chinese Acad Sci, Key Lab Biofuels, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Jinan, Sch Chem & Chem Engn, Key Lab Chem Sensing & Anal Univ Shandong, Jinan 250022, Peoples R China
Recommended Citation
GB/T 7714
Han, Lei,Li, Cuncheng,Zhang, Tao,et al. Au@Ag Heterogeneous Nanorods as Nanozyme Interfaces with Peroxidase-Like Activity and Their Application for One-Pot Analysis of Glucose at Nearly Neutral pH[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(26):14463-14470.
APA Han, Lei,Li, Cuncheng,Zhang, Tao,Lang, Qiaolin,&Liu, Aihua.(2015).Au@Ag Heterogeneous Nanorods as Nanozyme Interfaces with Peroxidase-Like Activity and Their Application for One-Pot Analysis of Glucose at Nearly Neutral pH.ACS APPLIED MATERIALS & INTERFACES,7(26),14463-14470.
MLA Han, Lei,et al."Au@Ag Heterogeneous Nanorods as Nanozyme Interfaces with Peroxidase-Like Activity and Their Application for One-Pot Analysis of Glucose at Nearly Neutral pH".ACS APPLIED MATERIALS & INTERFACES 7.26(2015):14463-14470.
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