{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:15:15Z","timestamp":1785420915471,"version":"3.56.0"},"reference-count":54,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2026,5,22]],"date-time":"2026-05-22T00:00:00Z","timestamp":1779408000000},"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":"crossref","award":["52479126"],"award-info":[{"award-number":["52479126"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["51879093"],"award-info":[{"award-number":["51879093"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["52108206"],"award-info":[{"award-number":["52108206"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"award":["52479126"],"award-info":[{"award-number":["52479126"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"award":["51879093"],"award-info":[{"award-number":["51879093"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"award":["52108206"],"award-info":[{"award-number":["52108206"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100007129","name":"Natural Science Foundation of Shandong Province","doi-asserted-by":"crossref","award":["ZR2024YQ023"],"award-info":[{"award-number":["ZR2024YQ023"]}],"id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Jiangsu Science and Technology Department of China","award":["BE2022605"],"award-info":[{"award-number":["BE2022605"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>The development of highly efficient and stable photoanodes is essential for advancing photoelectrochemical cathodic protection towards practical applications. Herein, a novel ternary sulfide heterojunction was engineered through the construction of a three-dimensional interlocked architecture of ZnIn2S4 on SnIn4S8 nanosheets via a sequential hydrothermal synthesis. This unique three-dimensional interlocked configuration creates an intimate interface and continuous charge transfer highways, effectively addressing the slow electron movement and poor interfacial contact that plague conventional photoelectrodes. Spectroscopic and electrochemical analyses verified the formation of a Type-II band alignment, which drives the directional migration of photogenerated electrons from ZnIn2S4 to SnIn4S8 under an intrinsic built-in electric field. Upon coupling with 304 stainless steel, the ZnIn2S4\/SnIn4S3 heterojunction exhibited outstanding photoelectrochemical cathodic protection performance. It delivered impressive photocurrent densities of 15.22, 19.76, and 72.27 \u03bcA\u00b7cm\u22122 in 3.5 wt% NaCl, 0.1 M Na2S2O3, and 0.1 M Na2S\/NaOH electrolytes, respectively, along with a prominent 720 mV cathodic potential shift in the Na2S\/NaOH system. Most importantly, its good activity and stability in the scavenger-free 3.5 wt% NaCl solution and natural seawater highlight the strong practical potential of this 3D interlocked photoanode for sustainable marine metal corrosion control. Through a strategic multi-electrolyte assessment, the underlying protection mechanisms were decoupled, revealing that the synergy between the heterojunction-induced charge separation enabled by the three-dimensional interlocked structure and electrolyte-specific hole scavenging is key to the enhanced performance.<\/jats:p>","DOI":"10.3390\/nano16110652","type":"journal-article","created":{"date-parts":[[2026,5,22]],"date-time":"2026-05-22T16:06:08Z","timestamp":1779465968000},"page":"652","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Three-Dimensional Interlocked Heterojunction Photoanode for Sustainable Metal Corrosion Control in Marine Environments"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2696-6925","authenticated-orcid":false,"given":"Xiaoyan","family":"Liu","sequence":"first","affiliation":[{"name":"College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China"},{"name":"Institute of Corrosion Protection, Hohai University, Nanjing 210098, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuchu","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, Hohai University, Nanjing 213000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yumei","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xilong","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, Hohai University, Nanjing 213000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiurui","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leiying","family":"Han","sequence":"additional","affiliation":[{"name":"College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Liu, S., Li, J., Zhang, Y., Zhang, X., Ding, Y., Zhang, W., Rao, J., and Zhang, Y. 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