{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,13]],"date-time":"2026-09-13T03:22:19Z","timestamp":1789269739377,"version":"build-2803163510"},"reference-count":34,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2025,7,7]],"date-time":"2025-07-07T00:00:00Z","timestamp":1751846400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003787","name":"Natural Science Foundation of Hebei Province","doi-asserted-by":"publisher","award":["E2022110002"],"award-info":[{"award-number":["E2022110002"]}],"id":[{"id":"10.13039\/501100003787","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003787","name":"Natural Science Foundation of Hebei Province","doi-asserted-by":"publisher","award":["221001005D"],"award-info":[{"award-number":["221001005D"]}],"id":[{"id":"10.13039\/501100003787","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003787","name":"Natural Science Foundation of Hebei Province","doi-asserted-by":"publisher","award":["cxtdl2302"],"award-info":[{"award-number":["cxtdl2302"]}],"id":[{"id":"10.13039\/501100003787","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Natural Science Foundation of Cangzhou City","award":["E2022110002"],"award-info":[{"award-number":["E2022110002"]}]},{"name":"Natural Science Foundation of Cangzhou City","award":["221001005D"],"award-info":[{"award-number":["221001005D"]}]},{"name":"Natural Science Foundation of Cangzhou City","award":["cxtdl2302"],"award-info":[{"award-number":["cxtdl2302"]}]},{"name":"Advanced Composite Materials and Coating Research and Innovation Team of Cangzhou Normal University","award":["E2022110002"],"award-info":[{"award-number":["E2022110002"]}]},{"name":"Advanced Composite Materials and Coating Research and Innovation Team of Cangzhou Normal University","award":["221001005D"],"award-info":[{"award-number":["221001005D"]}]},{"name":"Advanced Composite Materials and Coating Research and Innovation Team of Cangzhou Normal University","award":["cxtdl2302"],"award-info":[{"award-number":["cxtdl2302"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The limited oxidation resistance of MoSi2 between 400 \u00b0C and 600 \u00b0C restricts its aerospace applications. This study develops a silica-sol derived core-shell MoSi2@SiO2 composite to enhance the low-temperature oxidation resistance of MoSi2. Acidic, neutral, and basic silica sols were systematically applied to coat MoSi2 powders through sol-adsorption encapsulation. Two pathways were used, one was ethanol-mediated dispersion, and the other was direct dispersion of MoSi2 particles in silica sol. Analysis demonstrated that ethanol-mediated dispersion significantly influenced the coating efficiency and oxidation resistance, exhibited significantly decreased coating weight gains (maximum 27%) and increased oxidation weight gains (10\u201320%) between 340 \u00b0C and 600 \u00b0C compared with direct dispersion of MoSi2 particles with silica sol, ascribe to the kinetic inhibition of hydroxyl group condensation and steric hindrance of MoSi2-silica sol interface interactions of ethanol. Systematic investigation of silica sol encapsulation of MoSi2 revealed critical correlations between colloid properties and oxidation resistance of MoSi2@SiO2. Basic silica sol coated MoSi2 (BS-MoSi2) exhibits the lowest coating efficiency (coating weight gain of 7.74 \u00b1 0.06%) as well as lowest oxidation weight gain (18.45%) between 340 \u00b0C and 600 \u00b0C compared with those of acid and neutral silica sol coated MoSi2 (AS-MoSi2 and NS-MoSi2), arises from optimal gelation kinetics, enhanced surface coverage via reduced agglomeration, and suppressed premature nucleation through controlled charge interactions under alkaline conditions.<\/jats:p>","DOI":"10.3390\/ma18133203","type":"journal-article","created":{"date-parts":[[2025,7,7]],"date-time":"2025-07-07T08:58:23Z","timestamp":1751878703000},"page":"3203","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Effect of Silica Sol on the Preparation and Oxidation Resistance of MoSi2@SiO2"],"prefix":"10.3390","volume":"18","author":[{"given":"Linlin","family":"Guo","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Cangzhou Normal University, Cangzhou 061001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinjun","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Cangzhou Normal University, Cangzhou 061001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengpeng","family":"Miao","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Cangzhou Normal University, Cangzhou 061001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuang","family":"Feng","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Cangzhou Normal University, Cangzhou 061001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaozhen","family":"Fan","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Cangzhou Normal University, Cangzhou 061001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5662-4427","authenticated-orcid":false,"given":"Haiyan","family":"Du","sequence":"additional","affiliation":[{"name":"Key Lab of Advanced Ceramics and Machining Technology of the Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiachen","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Lab of Advanced Ceramics and Machining Technology of the Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1894-3758","authenticated-orcid":false,"given":"Mingchao","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Science, Civil Aviation University of China, Tianjin 300300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,7,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.jmst.2021.02.026","article-title":"Secrets of high thermal emission of transition metal disilicides TMSi2 (TM = Ta, Mo)","volume":"89","author":"Huimin","year":"2021","journal-title":"J. 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