A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion
In this study, a colorimetric sensor was developed for the detection of organophosphorus pesticides (OPs) using a heterogeneous nanozyme with phosphatase-like activity. Herein, this heterogeneous nanozyme (Au-pCeO<sub>2</sub>) was obtained by the modification of gold nanoparticles on por...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/12/15/2980 |
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| author | Fengnian Zhao Mengyue Li Li Wang Min Wang |
| author_facet | Fengnian Zhao Mengyue Li Li Wang Min Wang |
| author_sort | Fengnian Zhao |
| collection | DOAJ |
| description | In this study, a colorimetric sensor was developed for the detection of organophosphorus pesticides (OPs) using a heterogeneous nanozyme with phosphatase-like activity. Herein, this heterogeneous nanozyme (Au-pCeO<sub>2</sub>) was obtained by the modification of gold nanoparticles on porous cerium oxide nanorods, resulting in synergistic hydrolysis performance for OPs. Taking methyl parathion (MP) as the target pesticide, the catalytic performance and mechanism of Au-pCeO<sub>2</sub> were investigated. Based on the phosphatase-like Au-pCeO<sub>2</sub>, a dual-mode colorimetric sensor for MP was put forward by the analysis of the hydrolysis product via a UV-visible spectrophotometer and a smartphone. Under optimum conditions, this dual-mode strategy can be used for the on-site analysis of MP with concentrations of 5 to 200 μM. Additionally, it can be applied for MP detection in pear and lettuce samples with recoveries ranging from 85.27% to 115.87% and relative standard deviations (RSDs) not exceeding 6.20%, which can provide a simple and convenient method for OP detection in agricultural products. |
| first_indexed | 2024-03-11T00:27:33Z |
| format | Article |
| id | doaj.art-a26a18a70a4343a1862bcf20f272ad74 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-11T00:27:33Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-a26a18a70a4343a1862bcf20f272ad742023-11-18T22:55:49ZengMDPI AGFoods2304-81582023-08-011215298010.3390/foods12152980A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl ParathionFengnian Zhao0Mengyue Li1Li Wang2Min Wang3College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, ChinaCollege of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, ChinaCollege of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, ChinaCollege of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, ChinaIn this study, a colorimetric sensor was developed for the detection of organophosphorus pesticides (OPs) using a heterogeneous nanozyme with phosphatase-like activity. Herein, this heterogeneous nanozyme (Au-pCeO<sub>2</sub>) was obtained by the modification of gold nanoparticles on porous cerium oxide nanorods, resulting in synergistic hydrolysis performance for OPs. Taking methyl parathion (MP) as the target pesticide, the catalytic performance and mechanism of Au-pCeO<sub>2</sub> were investigated. Based on the phosphatase-like Au-pCeO<sub>2</sub>, a dual-mode colorimetric sensor for MP was put forward by the analysis of the hydrolysis product via a UV-visible spectrophotometer and a smartphone. Under optimum conditions, this dual-mode strategy can be used for the on-site analysis of MP with concentrations of 5 to 200 μM. Additionally, it can be applied for MP detection in pear and lettuce samples with recoveries ranging from 85.27% to 115.87% and relative standard deviations (RSDs) not exceeding 6.20%, which can provide a simple and convenient method for OP detection in agricultural products.https://www.mdpi.com/2304-8158/12/15/2980heterogeneous nanozymecerium oxidegold nanoparticlesphosphatase-like activitymethyl parathion |
| spellingShingle | Fengnian Zhao Mengyue Li Li Wang Min Wang A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion Foods heterogeneous nanozyme cerium oxide gold nanoparticles phosphatase-like activity methyl parathion |
| title | A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion |
| title_full | A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion |
| title_fullStr | A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion |
| title_full_unstemmed | A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion |
| title_short | A Colorimetric Sensor Enabled with Heterogeneous Nanozymes with Phosphatase-like Activity for the Residue Analysis of Methyl Parathion |
| title_sort | colorimetric sensor enabled with heterogeneous nanozymes with phosphatase like activity for the residue analysis of methyl parathion |
| topic | heterogeneous nanozyme cerium oxide gold nanoparticles phosphatase-like activity methyl parathion |
| url | https://www.mdpi.com/2304-8158/12/15/2980 |
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