{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T02:26:26Z","timestamp":1781663186809,"version":"3.54.5"},"reference-count":51,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2024,4,27]],"date-time":"2024-04-27T00:00:00Z","timestamp":1714176000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Taishan Scholars Program of Shandong Province","award":["tsqn201909104"],"award-info":[{"award-number":["tsqn201909104"]}]},{"name":"Taishan Scholars Program of Shandong Province","award":["DC2200000875"],"award-info":[{"award-number":["DC2200000875"]}]},{"name":"HighGrade Talents Plan of Qingdao University","award":["tsqn201909104"],"award-info":[{"award-number":["tsqn201909104"]}]},{"name":"HighGrade Talents Plan of Qingdao University","award":["DC2200000875"],"award-info":[{"award-number":["DC2200000875"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>An abnormal level of dopamine (DA), a kind of neurotransmitter, correlates with a series of diseases, including Parkinson\u2019s disease, Willis-Ekbom disease, attention deficit hyperactivity disorder, and schizophrenia. Hence, it is imperative to achieve a precise, rapid detection method in clinical medicine. In this study, we synthesized nanocomposite carbon aerogels (CAs) doped with iron and iron carbide, based on algae residue-derived biomass materials, using Fe(NO3)3 as the iron source. The modified glassy carbon electrode (GCE) for DA detection, denoted as CAs-Fe\/GCE, was prepared through surface modification with this composite material. X-ray photoelectron spectroscopy and X-ray diffraction characterization confirmed the successful doping of iron into the as-prepared CAs. Additionally, the electrochemical behavior of DA on the modified electrode surface was investigated and the results demonstrate that the addition of the CAs-Fe promoted the electron transfer rate, thereby enhancing their sensing performance. The fabricated electrochemical DA biosensor exhibits an accurate detection of DA in the concentration within the range of 0.01~200 \u00b5M, with a detection limit of 0.0033 \u00b5M. Furthermore, the proposed biosensor is validated in real samples, showing its high applicability for the detection of DA in beverages.<\/jats:p>","DOI":"10.3390\/s24092787","type":"journal-article","created":{"date-parts":[[2024,4,29]],"date-time":"2024-04-29T08:49:24Z","timestamp":1714380564000},"page":"2787","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Facile Synthesis of Fe-Doped, Algae Residue-Derived Carbon Aerogels for Electrochemical Dopamine Biosensors"],"prefix":"10.3390","volume":"24","author":[{"given":"Hao","family":"Wu","sequence":"first","affiliation":[{"name":"Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qin","family":"Wen","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Luan","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiwei","family":"Yang","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Guo","sequence":"additional","affiliation":[{"name":"Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3838-8659","authenticated-orcid":false,"given":"Gang","family":"Wei","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"10987","DOI":"10.1021\/acsami.0c22781","article-title":"Rational Confinement of Yttrium Vanadate within Three-Dimensional Graphene Aerogel: Electrochemical Analysis of Monoamine Neurotransmitter (Dopamine)","volume":"13","author":"Kokulnathan","year":"2021","journal-title":"ACS Appl. 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