Ultrasensitive and specific photoelectrochemical sensor for hydrogen peroxide detection based on pillar[5]arene-functionalized Au nanoparticles and MWNTs hybrid BiOBr heterojunction
A photoelectrochemical sensor for target detection of hydrogen peroxide was designed based on a new heterojunction nanocomposite which was sulfhydryl-borate ester–modified A1/B1-type pillar[5]arene (BP5)–functionalized Au NPs and multi-walled carbon nanotubes hybridized with bismuth bromide oxide (AuBP5/MWNTs-BiOBr). The specific sensor was based on the direct induction of oxidation by hydrogen peroxide of the borate ester group of pillar[5]arene. Additionally, the local surface plasmon resonance (LSPR) of Au NPs enhanced visible light capture, the host–guest complexation of BP5 with $ H_{2} $$ O_{2} $ enhanced photocurrent response, the layer-by-layer stacked nanoflower structure of BiOBr provided large specific surface area with more active sites, and the conductivity of MWNTs enhanced the charge separation efficiency and significantly improves the stability of PEC. Their synthesis effect significantly increased the photocurrent signal and further enhanced the detection result. Under the optimal conditions, the linear concentration range of $ H_{2} $$ O_{2} $ detected by the Au@BP5/MWNTs-BiOBr sensor was from 1 to 60 pmol/L. The limit of detection (LOD) and the limit of quantification (LOQ) of the method were 0.333 pmol/L and 1 pmol/L, respectively, and the sensitivity was 6.471 pmol/L. Importantly, the PEC sensor has good stability, reproducibility, and interference resistance and can be used for the detection of hydrogen peroxide in real cells. Graphical Abstract.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:191 |
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| Enthalten in: |
Microchimica acta - 191(2024), 5 vom: 16. Apr. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Jin [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| BKL: | |
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| Themen: |
Au@BP5/MWNTs-BiOBr |
| Anmerkungen: |
© The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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| doi: |
10.1007/s00604-024-06302-7 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a A photoelectrochemical sensor for target detection of hydrogen peroxide was designed based on a new heterojunction nanocomposite which was sulfhydryl-borate ester–modified A1/B1-type pillar[5]arene (BP5)–functionalized Au NPs and multi-walled carbon nanotubes hybridized with bismuth bromide oxide (AuBP5/MWNTs-BiOBr). The specific sensor was based on the direct induction of oxidation by hydrogen peroxide of the borate ester group of pillar[5]arene. Additionally, the local surface plasmon resonance (LSPR) of Au NPs enhanced visible light capture, the host–guest complexation of BP5 with $ H_{2} $$ O_{2} $ enhanced photocurrent response, the layer-by-layer stacked nanoflower structure of BiOBr provided large specific surface area with more active sites, and the conductivity of MWNTs enhanced the charge separation efficiency and significantly improves the stability of PEC. Their synthesis effect significantly increased the photocurrent signal and further enhanced the detection result. Under the optimal conditions, the linear concentration range of $ H_{2} $$ O_{2} $ detected by the Au@BP5/MWNTs-BiOBr sensor was from 1 to 60 pmol/L. The limit of detection (LOD) and the limit of quantification (LOQ) of the method were 0.333 pmol/L and 1 pmol/L, respectively, and the sensitivity was 6.471 pmol/L. Importantly, the PEC sensor has good stability, reproducibility, and interference resistance and can be used for the detection of hydrogen peroxide in real cells. Graphical Abstract | ||
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| 650 | 4 | |a Au@BP5/MWNTs-BiOBr |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Hydrogen peroxide |7 (dpeaa)DE-He213 | |
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| 700 | 1 | |a Bei, Jiali |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Tingting |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Juan |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Yong |e verfasserin |4 aut | |
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