{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T12:54:46Z","timestamp":1791204886898,"version":"4.1.0"},"reference-count":68,"publisher":"American Chemical Society (ACS)","issue":"39","license":[{"start":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T00:00:00Z","timestamp":1789689600000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T00:00:00Z","timestamp":1789689600000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T00:00:00Z","timestamp":1789689600000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-045"}],"funder":[{"DOI":"10.13039\/501100002822","name":"Central South University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002822","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52121004"],"award-info":[{"award-number":["52121004"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Horizontal Project in Dexing Copper Mine of Jiangxi Copper Co., Ltd.","award":["DTHB022025(07)"],"award-info":[{"award-number":["DTHB022025(07)"]}]},{"name":"Horizontal Project in Hunan Baiyu Technology Co., Ltd.","award":["KY20250515002018"],"award-info":[{"award-number":["KY20250515002018"]}]},{"name":"Thousand Talents Plan Project of Introducing and Training High-level Talents of Innovation and Entrepreneurship in Jiangxi Province","award":["jxsq2023105004"],"award-info":[{"award-number":["jxsq2023105004"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Selectively regulating feldspar surface hydrophobicity remains a key challenge for the flotation separation of quartz from feldspar. This challenge is closely related to its heterogeneous surface chemistry and the limited understanding of how cation leaching affects collector adsorption. To address this gap, this work elucidates a previously overlooked cation-vacancy-mediated adsorption mechanism of amine surfactants on the feldspar surface, and proposes a steric hindrance-regulation strategy to selectively weaken feldspar flotation. A series of fatty amines with different substitution patterns (primary, secondary, and tertiary) was investigated. The results reveal that amines promote cation leaching from the feldspar surface, and preferentially adsorb at the resulting cation-vacancy-associated sites. Increasing N-methyl substitution hinders the approach of amino groups to these vacancies, and weakens the hydrogen bonding with surrounding oxygen atoms, reducing adsorption-layer stability on feldspar. In contrast, adsorption on quartz is primarily driven by electrostatic attraction and is less affected by steric hindrance. Consequently, flotation selectivity is positively correlated with steric hindrance. An optimal flotation concentrate with 94.39% SiO2 grade and 76.90% recovery was obtained using 10\u20135 mol\/L DMDDA (tertiary amine) and 5 \u00d7 10\u20135 mol\/L sodium oleate as collectors at pH 7. This insight provides a valuable reference for flotation separation systems involving aluminosilicate minerals.<\/jats:p>","DOI":"10.1021\/acs.inorgchem.6c02866","type":"journal-article","created":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T12:01:33Z","timestamp":1789732893000},"page":"23005-23019","source":"Crossref","is-referenced-by-count":0,"title":["Steric Hindrance-Controlled Selective Adsorption of\nAmine Surfactants: The Crucial Role of Cation Vacancies on Aluminosilicate\nMineral Surface"],"prefix":"10.1021","volume":"65","author":[{"given":"Lingyun","family":"Fei","sequence":"first","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jia","family":"Wang","sequence":"additional","affiliation":[{"name":"Dexing Copper Mine of Jiangxi Copper Corporation Limited , , ,","place":["Shangrao, Jiangxi, China, 334224"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1108-5006","authenticated-orcid":true,"given":"Qingzhu","family":"Li","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Zheng","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yaqing","family":"Wang","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meiyan","family":"Zhou","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengying","family":"Si","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4981-6775","authenticated-orcid":true,"given":"Weichun","family":"Yang","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Liao","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhihui","family":"Yang","sequence":"additional","affiliation":[{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"Central South University , , ,","place":["Changsha, China, 410083"]},{"name":"State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals , ,","place":["Changsha, China, 410083"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,18]]},"reference":[{"issue":"23","key":"2026100508081578600_cit1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202520105","article-title":"Spatiotemporal plasma\u2013mediated\nlaser fabrication of ultrahigh-aspect-ratio nanochannel arrays for\nvertical perovskite nanowire semiconductor devices","volume":"36","author":"Wang","year":"2025","journal-title":"Adv. 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