{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T01:13:10Z","timestamp":1778634790108,"version":"3.51.4"},"reference-count":43,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2023,12,4]],"date-time":"2023-12-04T00:00:00Z","timestamp":1701648000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Natural Science Foundation of China","award":["62274047"],"award-info":[{"award-number":["62274047"]}]},{"name":"the National Natural Science Foundation of China","award":["62304062"],"award-info":[{"award-number":["62304062"]}]},{"name":"the National Natural Science Foundation of China","award":["IR2021204"],"award-info":[{"award-number":["IR2021204"]}]},{"name":"the Interdisciplinary Research Foundation of Harbin Institute of Technology, China","award":["62274047"],"award-info":[{"award-number":["62274047"]}]},{"name":"the Interdisciplinary Research Foundation of Harbin Institute of Technology, China","award":["62304062"],"award-info":[{"award-number":["62304062"]}]},{"name":"the Interdisciplinary Research Foundation of Harbin Institute of Technology, China","award":["IR2021204"],"award-info":[{"award-number":["IR2021204"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this work, a flexible electrochemical sensor was developed for the detection of organophosphorus pesticides (OPs). To fabricate the sensor, graphene was generated in situ by laser-induced graphene (LIG) technology on a flexible substrate of polyimide (PI) film to form a three-electrode array, and pralidoxime (PAM) chloride was used as the probe molecule. CeO2 was used to modify the working electrode to improve the sensitivity of the sensor because of its electrocatalytic effect on the oxidation of PAM, and the Ag\/AgCl reference electrode was prepared by the drop coating method. The effects of the laser power, laser scanning speed, and CeO2 modification on the electrochemical properties of the sensor were studied in detail. The results prove that the sensor has good repeatability, stability, and anti-interference ability, and it shows an excellent linear response in the chlorpyrifos concentration range from 1.4 \u00d7 10\u22128 M to 1.12 \u00d7 10\u22127 M with the detection limit of 7.01 \u00d7 10\u221210 M.<\/jats:p>","DOI":"10.3390\/s23239605","type":"journal-article","created":{"date-parts":[[2023,12,4]],"date-time":"2023-12-04T05:28:21Z","timestamp":1701667701000},"page":"9605","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["A Laser-Induced Graphene-Based Sensor Modified with CeO2 for Determination of Organophosphorus Pesticides with Improved Performance"],"prefix":"10.3390","volume":"23","author":[{"given":"Wenna","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiu","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuelin","family":"Zhang","sequence":"additional","affiliation":[{"name":"MEMS Center, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weijian","family":"Yuan","sequence":"additional","affiliation":[{"name":"MEMS Center, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianfeng","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Toxicology and Medical Countermeasures and Laboratory of Toxicant Analysis, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"148625","DOI":"10.1016\/j.scitotenv.2021.148625","article-title":"Do pesticides promote or hinder sustainability in agriculture? 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