{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T20:05:36Z","timestamp":1762113936360,"version":"build-2065373602"},"reference-count":55,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,4,11]],"date-time":"2023-04-11T00:00:00Z","timestamp":1681171200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"China Postdoctoral Science Foundation","award":["2021M700651","3132022216","3132022217"],"award-info":[{"award-number":["2021M700651","3132022216","3132022217"]}]},{"name":"Fundamental Research Funds for the Central Universities","award":["2021M700651","3132022216","3132022217"],"award-info":[{"award-number":["2021M700651","3132022216","3132022217"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>L-cysteine, a component of the symmetric L-cystine, is essential in numerous biological activities. Thus, detecting cysteine rapidly, selectively, and sensitively is of tremendous interest. Herein, g-C3N4@CdS composites were employed as sensing elements in a photoelectrochemical platform for L-cysteine sensing. In this system, g-C3N4@CdS composites provided much better optoelectronic function than bare CdS materials owing to their high photon-to-current conversion efficiency and excellent anti-photocorrosion properties. The innovative photoelectrochemical sensor has a wide determination range of 5 to 190 \u00b5M, a very low detection limit of 1.56 \u00b5M, a fast response time, and good long-term stability (ca. 1 month). Without applying any separation procedures, a low concentration of CySH was successfully detected in human urine samples, which is compatible with the results of chemiluminescence.<\/jats:p>","DOI":"10.3390\/sym15040896","type":"journal-article","created":{"date-parts":[[2023,4,12]],"date-time":"2023-04-12T03:49:17Z","timestamp":1681271357000},"page":"896","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Ultrasensitive Determination of L-Cysteine with g-C3N4@CdS-Based Photoelectrochemical Platform"],"prefix":"10.3390","volume":"15","author":[{"given":"Hefeng","family":"Zhang","sequence":"first","affiliation":[{"name":"Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian 116026, China"}]},{"given":"Shengliang","family":"Qi","sequence":"additional","affiliation":[{"name":"Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian 116026, China"}]},{"given":"Haidong","family":"Wang","sequence":"additional","affiliation":[{"name":"Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian 116026, China"}]},{"given":"Guanghui","family":"Zhang","sequence":"additional","affiliation":[{"name":"Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian 116026, China"}]},{"given":"Kaixin","family":"Zhu","sequence":"additional","affiliation":[{"name":"Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian 116026, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4092-3710","authenticated-orcid":false,"given":"Weiguang","family":"Ma","sequence":"additional","affiliation":[{"name":"Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian 116026, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1038\/s41556-021-00822-7","article-title":"Cysteine oxidation of copper transporter CTR1 drives VEGFR2 signalling and angiogenesis","volume":"24","author":"Das","year":"2022","journal-title":"Nat. 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