Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture

Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture

Owing to the excellent self-assembly properties and chemical flexibility, amyloid peptide were employed to build multifunctional architectures. Herein, we demonstrated the self-assembly of gold nanoparticles (AuNPs) in assistant of a sequence-designed peptide. As both surface ligands and self-assemb...

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Main Authors: Wensi Zhang, Jundan Xi, Yongcao Zhang, Zhiqiang Su, Gang Wei
Format: Article
Language:English
Published: Elsevier 2020-01-01
Series:Arabian Journal of Chemistry
Online Access:http://www.sciencedirect.com/science/article/pii/S1878535217302277
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spelling doaj-9fe7603669d84791b427550b41da17172020-11-25T01:33:52ZengElsevierArabian Journal of Chemistry1878-53522020-01-0113114061414Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architectureWensi Zhang0Jundan Xi1Yongcao Zhang2Zhiqiang Su3Gang Wei4State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, China; Corresponding authors.Faculty of Production Engineering, University of Bremen, D-28359 Bremen, Germany; Corresponding authors.Owing to the excellent self-assembly properties and chemical flexibility, amyloid peptide were employed to build multifunctional architectures. Herein, we demonstrated the self-assembly of gold nanoparticles (AuNPs) in assistant of a sequence-designed peptide. As both surface ligands and self-assembly scaffolds of AuNPs, the formation of amyloid peptide nanofibrils could drive the self-assembly of AuNPs to form a fibrous hybrid architecture, which exhibits excellent electrochemical and colorimetric sensing performances. As a result, the electrochemical sensing towards H2O2 achieved a linear response range of from 0.1 to 25.85 mM (R2 = 0.997), and the detection limit was calculated to be 3.43 μM (S/N = 3). This self-assembled nanofiber was also employed for Hg2+ detection. The sensor produced a color change which can readout with naked eye and UV–visual spectroscopy, with a linear detection range of 10–70 μM of Hg2+ ion sample (R2 = 0.991). Keywords: Self-assembly, Peptide nanofibrils, Gold nanoparticles, Electrochemical sensor, Colorimetric sensorhttp://www.sciencedirect.com/science/article/pii/S1878535217302277
collection DOAJ
language English
format Article
sources DOAJ
author Wensi Zhang
Jundan Xi
Yongcao Zhang
Zhiqiang Su
Gang Wei
spellingShingle Wensi Zhang
Jundan Xi
Yongcao Zhang
Zhiqiang Su
Gang Wei
Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture
Arabian Journal of Chemistry
author_facet Wensi Zhang
Jundan Xi
Yongcao Zhang
Zhiqiang Su
Gang Wei
author_sort Wensi Zhang
title Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture
title_short Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture
title_full Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture
title_fullStr Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture
title_full_unstemmed Green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-Au nanofibril architecture
title_sort green synthesis and fabrication of an electrochemical and colorimetric sensor based on self-assembled peptide-au nanofibril architecture
publisher Elsevier
series Arabian Journal of Chemistry
issn 1878-5352
publishDate 2020-01-01
description Owing to the excellent self-assembly properties and chemical flexibility, amyloid peptide were employed to build multifunctional architectures. Herein, we demonstrated the self-assembly of gold nanoparticles (AuNPs) in assistant of a sequence-designed peptide. As both surface ligands and self-assembly scaffolds of AuNPs, the formation of amyloid peptide nanofibrils could drive the self-assembly of AuNPs to form a fibrous hybrid architecture, which exhibits excellent electrochemical and colorimetric sensing performances. As a result, the electrochemical sensing towards H2O2 achieved a linear response range of from 0.1 to 25.85 mM (R2 = 0.997), and the detection limit was calculated to be 3.43 μM (S/N = 3). This self-assembled nanofiber was also employed for Hg2+ detection. The sensor produced a color change which can readout with naked eye and UV–visual spectroscopy, with a linear detection range of 10–70 μM of Hg2+ ion sample (R2 = 0.991). Keywords: Self-assembly, Peptide nanofibrils, Gold nanoparticles, Electrochemical sensor, Colorimetric sensor
url http://www.sciencedirect.com/science/article/pii/S1878535217302277
work_keys_str_mv AT wensizhang greensynthesisandfabricationofanelectrochemicalandcolorimetricsensorbasedonselfassembledpeptideaunanofibrilarchitecture
AT jundanxi greensynthesisandfabricationofanelectrochemicalandcolorimetricsensorbasedonselfassembledpeptideaunanofibrilarchitecture
AT yongcaozhang greensynthesisandfabricationofanelectrochemicalandcolorimetricsensorbasedonselfassembledpeptideaunanofibrilarchitecture
AT zhiqiangsu greensynthesisandfabricationofanelectrochemicalandcolorimetricsensorbasedonselfassembledpeptideaunanofibrilarchitecture
AT gangwei greensynthesisandfabricationofanelectrochemicalandcolorimetricsensorbasedonselfassembledpeptideaunanofibrilarchitecture
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