{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:13:03Z","timestamp":1788221583203,"version":"build-2803163510"},"reference-count":58,"publisher":"American Chemical Society (ACS)","issue":"33","license":[{"start":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T00:00:00Z","timestamp":1786320000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007750","name":"National Cheng Kung University","doi-asserted-by":"publisher","award":["NA"],"award-info":[{"award-number":["NA"]}],"id":[{"id":"10.13039\/501100007750","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100020950","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["NSTC 114-2221-E-006-068-MY3"],"award-info":[{"award-number":["NSTC 114-2221-E-006-068-MY3"]}],"id":[{"id":"10.13039\/501100020950","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,25]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>A facile synthesis method via the ball-milling coupled with simultaneous carbonization and activation with KOH at different temperatures was employed to prepare \u03b3-Fe2O3 nanoparticles-supported N-doped mesoporous carbons (denoted as \u03b3-Fe2O3@N-doped CX-T) from a variety of biomass raw materials (sugar cane bagasse, coffee grounds, and luffa) as precursors. The obtained \u03b3-Fe2O3@N-doped CX-T catalysts are characterized by using various spectroscopic measurements (i.e., X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS)) and tested for oxygen reduction reaction (ORR) in an alkaline solution via cyclic and liner sweep voltammetry. As a result, the \u03b3-Fe2O3@N-doped CS-600 catalyst prepared from sugar cane bagasse at 600 \u00b0C exhibits the superior catalytic performance toward ORR with positive onset potential (1.01 V vs reversible hydrogen electrode), 4-electron transfer pathway, methanol-resistance, and operation stability, which is comparable to a commercially obtainable Pt\/C catalyst. XPS analysis reveals that the nitrogen-doped carbons, i.e., pyridinic-N and graphitic-N, are the active species of catalysts for ORR. XRD and TEM images show that the formation of \u03b3-Fe2O3 on N-doped mesoporous carbons may also be the cocatalysts for boosting ORR performance. This study not only proposes a promising candidate as a nonprecious ORR cathode for alkaline fuel cells but also realizes the purpose of resource recovery and utilization.<\/jats:p>","DOI":"10.1021\/acsomega.6c05376","type":"journal-article","created":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T06:02:21Z","timestamp":1786341741000},"page":"50082-50092","source":"Crossref","is-referenced-by-count":0,"title":["Mechanochemical\nSynthesis of \u03b3-Fe2O3 Nanoparticles@N-Doped\nMesoporous Carbons Derived\nfrom Biomass for Oxygen Reduction"],"prefix":"10.1021","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-0290-1981","authenticated-orcid":true,"given":"Hung-Ta","family":"Yu","sequence":"first","affiliation":[{"name":"National Cheng Kung University , , ,","place":["Tainan, Taiwan, 70101"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling-Wei","family":"Wei","sequence":"additional","affiliation":[{"name":"National Cheng Kung University , , ,","place":["Tainan, Taiwan, 70101"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4852-874X","authenticated-orcid":true,"given":"Shou-Heng","family":"Liu","sequence":"additional","affiliation":[{"name":"National Cheng Kung University , , ,","place":["Tainan, Taiwan, 70101"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,8,10]]},"reference":[{"key":"2026083119140241000_cit1","doi-asserted-by":"publisher","first-page":"18155","DOI":"10.1021\/acsomega.5c13315","article-title":"Enhanced ORR\nActivity of Modified Recycled Graphite-Based Anode Materials","volume":"11","author":"Sukanya","year":"2026","journal-title":"ACS Omega"},{"key":"2026083119140241000_cit2","doi-asserted-by":"publisher","first-page":"27289","DOI":"10.1021\/acsomega.6c01383","article-title":"Enhanced PEMFC Performance\nand Durability Enabled by a Highly Oxygen-Permeable Ionomer Binder","volume":"11","author":"Tong","year":"2026","journal-title":"ACS Omega"},{"key":"2026083119140241000_cit3","doi-asserted-by":"publisher","first-page":"279","DOI":"10.1016\/j.jpowsour.2013.11.011","article-title":"Synthesis and characterization\nof carbon incorporated Fe-N\/carbon for methanol-tolerant oxygen reduction\nreaction of polymer electrolyte fuel cells","volume":"250","author":"Liu","year":"2014","journal-title":"J. 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