{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T21:11:46Z","timestamp":1792789906634,"version":"4.5.0"},"reference-count":37,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T00:00:00Z","timestamp":1791417600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T00:00:00Z","timestamp":1791417600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science and Technology Council (NSTC), Taiwan","award":["NSTC 113-2221-E-259-017-MY3"],"award-info":[{"award-number":["NSTC 113-2221-E-259-017-MY3"]}],"id":[{"id":"https:\/\/ror.org\/02kv4zf79","id-type":"ROR","asserted-by":"crossref"}]},{"name":"National Science and Technology Council (NSTC), Taiwan","award":["MOST 111-2221-E-259-004-MY3"],"award-info":[{"award-number":["MOST 111-2221-E-259-004-MY3"]}],"id":[{"id":"https:\/\/ror.org\/02kv4zf79","id-type":"ROR","asserted-by":"crossref"}]},{"name":"National Science and Technology Council (NSTC), Taiwan","award":["MOST 113-2112-M-027-004"],"award-info":[{"award-number":["MOST 113-2112-M-027-004"]}],"id":[{"id":"https:\/\/ror.org\/02kv4zf79","id-type":"ROR","asserted-by":"crossref"}]},{"award":["NSTC 113-2221-E-259-017-MY3"],"award-info":[{"award-number":["NSTC 113-2221-E-259-017-MY3"]}],"id":[{"id":"https:\/\/ror.org\/02kv4zf79","id-type":"ROR","asserted-by":"publisher"}]},{"award":["MOST 111-2221-E-259-004-MY3"],"award-info":[{"award-number":["MOST 111-2221-E-259-004-MY3"]}],"id":[{"id":"https:\/\/ror.org\/02kv4zf79","id-type":"ROR","asserted-by":"publisher"}]},{"award":["MOST 113-2112-M-027-004"],"award-info":[{"award-number":["MOST 113-2112-M-027-004"]}],"id":[{"id":"https:\/\/ror.org\/02kv4zf79","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>A facile, one-step galvanic replacement route was used to grow hierarchical copper nanodendrites (Cu NDs) directly on aluminum (Al) foil, providing a dual-function plasmonic platform for surface-enhanced Raman scattering (SERS) and enzyme-free photoelectrochemical (PEC) detection of hydrogen peroxide (H2O2). The Cu NDs were formed by immersing Al foil in an acidified CuSO4 solution at room temperature, and their fern-leaf morphology, phase purity, and metallic Cu(0) oxidation state were confirmed by scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Using 4-mercaptobenzoic acid (4-MBA) as a probe molecule, the Cu NDs\/Al foil substrate achieved SERS detection down to 10\u22127 M with an approximate enhancement factor of ~106, consistent with strong localized surface plasmon resonance (LSPR)-driven electromagnetic enhancement. Under simulated solar illumination, LSPR-excited hot carriers additionally accelerated the electrocatalytic reduction of H2O2, raising the detection sensitivity from 110.6 to 145.3 \u03bcA cm\u22122 mM\u22121 relative to dark conditions. Wavelength- and intensity-dependent photocurrent measurements confirmed that this enhancement tracks the LSPR absorption band of the Cu NDs rather than photothermal heating. These results establish low-cost, earth-abundant Cu nanodendrites as an effective plasmonic platform for combined optical and electrochemical (bio)sensing.<\/jats:p>","DOI":"10.3390\/nano16191269","type":"journal-article","created":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T11:26:53Z","timestamp":1791458813000},"page":"1269","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Plasmon-Enhanced Copper Nanodendrites as Dual-Function SERS Substrates and Photoelectrochemical H2O2 Sensors"],"prefix":"10.3390","volume":"16","author":[{"given":"Ying-Chu","family":"Chen","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Road, Taipei 10608, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]},{"given":"Cing-Jhen","family":"Shih","sequence":"additional","affiliation":[{"name":"Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"methodology","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"}]},{"given":"Yu-Kuei","family":"Hsu","sequence":"additional","affiliation":[{"name":"Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"methodology","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,10,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Ma, X., Zhou, S., Xu, X., and Du, Q. 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