A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification
Using citric acid (CA) and ethylenediamine (EDA) as precursors, stable nitrogen-doped carbon dots (CD) nanosols were prepared by microwave procedure and characterized in detail. It was found that CD<sub>N</sub>s catalyze ethanol (Et)-HAuCl<sub>4</sub> to generate gold nanopar...
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MDPI AG
2021-09-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/19/5930 |
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| author | Hongyan Bai Haolin Wang Fuzhang Bai Aihui Liang Zhiliang Jiang |
| author_facet | Hongyan Bai Haolin Wang Fuzhang Bai Aihui Liang Zhiliang Jiang |
| author_sort | Hongyan Bai |
| collection | DOAJ |
| description | Using citric acid (CA) and ethylenediamine (EDA) as precursors, stable nitrogen-doped carbon dots (CD) nanosols were prepared by microwave procedure and characterized in detail. It was found that CD<sub>N</sub>s catalyze ethanol (Et)-HAuCl<sub>4</sub> to generate gold nanoparticles (AuNPs), which have strong surface plasmon resonance, Rayleigh scattering, (RRS) and a surface plasmon resonance (SPR) absorption (Abs) effect at 370 nm and 575 nm, respectively. Compled the new catalytic amplification indicator reaction with the specific As<sup>3+</sup> aptamer reaction, a new RRS/Abs dual-mode aptamer sensor for the assay of trace As<sup>3+</sup> was developed, based on the RRS/Abs signals increasing linearly with As<sup>3+</sup> increasing in the ranges of 5–250 nmol/L and 50−250 nmol/L, whose detection limits were 0.8 nmol/L and 3.4 nmol/L As<sup>3+</sup>, respectively. This analytical method has the advantages of high selectivity, simplicity, and rapidity, and it has been successfully applied to the detection of practical samples. |
| first_indexed | 2024-03-10T06:54:26Z |
| format | Article |
| id | doaj.art-ca77140404a94df2be30ef2262021e04 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T06:54:26Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-ca77140404a94df2be30ef2262021e042023-11-22T16:34:46ZengMDPI AGMolecules1420-30492021-09-012619593010.3390/molecules26195930A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic AmplificationHongyan Bai0Haolin Wang1Fuzhang Bai2Aihui Liang3Zhiliang Jiang4Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaUsing citric acid (CA) and ethylenediamine (EDA) as precursors, stable nitrogen-doped carbon dots (CD) nanosols were prepared by microwave procedure and characterized in detail. It was found that CD<sub>N</sub>s catalyze ethanol (Et)-HAuCl<sub>4</sub> to generate gold nanoparticles (AuNPs), which have strong surface plasmon resonance, Rayleigh scattering, (RRS) and a surface plasmon resonance (SPR) absorption (Abs) effect at 370 nm and 575 nm, respectively. Compled the new catalytic amplification indicator reaction with the specific As<sup>3+</sup> aptamer reaction, a new RRS/Abs dual-mode aptamer sensor for the assay of trace As<sup>3+</sup> was developed, based on the RRS/Abs signals increasing linearly with As<sup>3+</sup> increasing in the ranges of 5–250 nmol/L and 50−250 nmol/L, whose detection limits were 0.8 nmol/L and 3.4 nmol/L As<sup>3+</sup>, respectively. This analytical method has the advantages of high selectivity, simplicity, and rapidity, and it has been successfully applied to the detection of practical samples.https://www.mdpi.com/1420-3049/26/19/5930CD<sub>N</sub>AuNPscatalytic amplificationaptamerRRS/Abs dual-mode sensorAs<sup>3+</sup> |
| spellingShingle | Hongyan Bai Haolin Wang Fuzhang Bai Aihui Liang Zhiliang Jiang A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification Molecules CD<sub>N</sub> AuNPs catalytic amplification aptamer RRS/Abs dual-mode sensor As<sup>3+</sup> |
| title | A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification |
| title_full | A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification |
| title_fullStr | A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification |
| title_full_unstemmed | A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification |
| title_short | A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As<sup>3+</sup> Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification |
| title_sort | simple and sensitive nanogold rrs abs dimode sensor for trace as sup 3 sup based on aptamer controlled nitrogen doped carbon dot catalytic amplification |
| topic | CD<sub>N</sub> AuNPs catalytic amplification aptamer RRS/Abs dual-mode sensor As<sup>3+</sup> |
| url | https://www.mdpi.com/1420-3049/26/19/5930 |
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