{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T18:06:16Z","timestamp":1774980376789,"version":"3.50.1"},"reference-count":66,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2020,2,13]],"date-time":"2020-02-13T00:00:00Z","timestamp":1581552000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61901037"],"award-info":[{"award-number":["61901037"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61601037"],"award-info":[{"award-number":["61601037"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Beijing Information Science and Technology Project of Beijing Educational Committee","award":["KM202011232016"],"award-info":[{"award-number":["KM202011232016"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A novel electrochemical sensor based on electropolymerized ion imprinted poly (o-phenylenediamine) PoPD\/electrochemical reduced graphene (ERGO) composite on glass carbon electrode (GCE) was fabricated for selective and sensitive determination of trace Cd(II) in water. ERGO was first deposited on the surface of GCE by electrochemical cyclic voltammetry (CV) scanning to enhance the electron transport activity at electrode surface. The ion imprinted polymer (IIP) of imprinted PoPD was then in situ electropolymerized on ERGO via CV scanning with oPD as functional monomer and Cd(II) ions as template, following removal of the template using electrochemical peroxidation method. The obtained imprinted PoPD\/RERGO composites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray energy spectroscopy (EDS) for the observation of their morphologies and components. The electrochemical behavior of the imprinted PoPD\/ERGO\/GCE was performed by CV and SWASV. The fabricated sensor of the imprinted PoPD\/ERGO\/GCE showed a good selectivity toward target Cd(II) ions in the presence of other heavy metal ions. Under the optimized experimental conditions, the sensor exhibited a good linear relationship between SWASV stripping peak values and Cd(II) concentration in the range of 1 to 50 ng\/mL, with the limit of detection as 0.13 ng\/mL (S\/N = 3). The proposed electrochemical sensor of imprinted PoPD\/ERGO\/GCE was successfully applied for trace Cd(II) determination in real water samples.<\/jats:p>","DOI":"10.3390\/s20041004","type":"journal-article","created":{"date-parts":[[2020,2,20]],"date-time":"2020-02-20T03:20:03Z","timestamp":1582168803000},"page":"1004","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["A Novel Electrochemical Sensor Based on Electropolymerized Ion Imprinted PoPD\/ERGO Composite for Trace Cd(II) Determination in Water"],"prefix":"10.3390","volume":"20","author":[{"given":"Jiyang","family":"Wang","sequence":"first","affiliation":[{"name":"Beijing key Laboratory of sensor, Beijing Information Science &amp; Technology University, Beijing 100101, China"},{"name":"Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing 100192, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jingfang","family":"Hu","sequence":"additional","affiliation":[{"name":"Beijing key Laboratory of sensor, Beijing Information Science &amp; Technology University, Beijing 100101, China"},{"name":"Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing 100192, China"},{"name":"State Key Laboratories of Transducer Technology, Shanghai Institute of Microsystems and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shiwei","family":"Hu","sequence":"additional","affiliation":[{"name":"Beijing key Laboratory of sensor, Beijing Information Science &amp; Technology University, Beijing 100101, China"},{"name":"Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing 100192, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guowei","family":"Gao","sequence":"additional","affiliation":[{"name":"Beijing key Laboratory of sensor, Beijing Information Science &amp; Technology University, Beijing 100101, China"},{"name":"Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing 100192, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu","family":"Song","sequence":"additional","affiliation":[{"name":"Beijing key Laboratory of sensor, Beijing Information Science &amp; Technology University, Beijing 100101, China"},{"name":"Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing 100192, China"},{"name":"State Key Laboratories of Transducer Technology, Shanghai Institute of Microsystems and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"98","DOI":"10.1016\/j.jelechem.2011.03.029","article-title":"carbon paste electrode impregnated with cd2+ imprinted polymer as a new and high selective electrochemical sensor for determination of ultra-trace cd2+ in water samples","volume":"657","author":"Alizadeh","year":"2011","journal-title":"J. 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