{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T09:16:00Z","timestamp":1785402960685,"version":"3.56.0"},"reference-count":67,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T00:00:00Z","timestamp":1783036800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Nature Science Foundation of China","doi-asserted-by":"crossref","award":["22372085"],"award-info":[{"award-number":["22372085"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"award":["22372085"],"award-info":[{"award-number":["22372085"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Ningde Normal University","award":["2024Y04"],"award-info":[{"award-number":["2024Y04"]}]},{"name":"Ningde Normal University","award":["2022FZ23"],"award-info":[{"award-number":["2022FZ23"]}]},{"name":"Ningde Normal University","award":["2023ZX02"],"award-info":[{"award-number":["2023ZX02"]}]},{"name":"Ningde Normal University","award":["2026T03"],"award-info":[{"award-number":["2026T03"]}]},{"award":["2024Y04"],"award-info":[{"award-number":["2024Y04"]}],"id":[{"id":"https:\/\/ror.org\/01p996c64","id-type":"ROR","asserted-by":"publisher"}]},{"award":["2022FZ23"],"award-info":[{"award-number":["2022FZ23"]}],"id":[{"id":"https:\/\/ror.org\/01p996c64","id-type":"ROR","asserted-by":"publisher"}]},{"award":["2023ZX02"],"award-info":[{"award-number":["2023ZX02"]}],"id":[{"id":"https:\/\/ror.org\/01p996c64","id-type":"ROR","asserted-by":"publisher"}]},{"award":["2026T03"],"award-info":[{"award-number":["2026T03"]}],"id":[{"id":"https:\/\/ror.org\/01p996c64","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003392","name":"Natural Science Foundation of Fujian Province","doi-asserted-by":"crossref","award":["2024J01929"],"award-info":[{"award-number":["2024J01929"]}],"id":[{"id":"10.13039\/501100003392","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100003392","name":"Natural Science Foundation of Fujian Province","doi-asserted-by":"crossref","award":["2022J05268"],"award-info":[{"award-number":["2022J05268"]}],"id":[{"id":"10.13039\/501100003392","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A novel composite catalyst for photothermal CO2 cycloaddition was developed by integrating the ionic liquid 1-ethylpyridinium bromide (EPB) with a copper-based metal\u2013organic framework (HKUST-1). HKUST-1 was synthesized via a hydrothermal method and functionalized with EPB through a wet impregnation strategy to enhance its catalytic performance. Under xenon lamp irradiation and optimized conditions (80 \u00b0C, 1 MPa CO2 pressure, 12 h, and 0.07% mol of TBAB bromide as a co-catalyst), the HK@EPB composite exhibited outstanding performance in catalyzing the conversion of CO2 and various epoxides into cyclic carbonates. The exceptional catalytic activity arises from a synergistic multicomponent mechanism: the incorporation of EPB not only enhances CO2 adsorption capacity but also provides photothermal energy for the reaction; simultaneously, EPB dissociates bromide ions to effectively initiate epoxide ring-opening. In particular, propylene oxide achieved a selectivity of 95% for the desired cyclic carbonate, surpassing most previously reported MOF-based catalysts. This system enables efficient catalysis under mild conditions through the synergistic contributions of the high CO2 adsorption capacity and Cu2+\/Cu+ redox-mediated electron transfer of HKUST-1, the provision of nucleophilic Br-species from EPB to promote epoxide ring-opening, and the cooperative effect of TBAB. This study demonstrates that ionic-liquid-functionalized MOF composites can serve as sustainable and versatile catalytic platforms, offering an environmentally friendly pathway for large-scale CO2 utilization.<\/jats:p>","DOI":"10.3390\/molecules31132332","type":"journal-article","created":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T07:59:47Z","timestamp":1783065587000},"page":"2332","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ionic Liquid Microenvironment Engineering in HKUST-1 for Efficient Photothermal CO2 Cycloaddition"],"prefix":"10.3390","volume":"31","author":[{"given":"Renkun","family":"Huang","sequence":"first","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"},{"name":"Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haohao","family":"Yan","sequence":"additional","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"},{"name":"State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Runling","family":"Huang","sequence":"additional","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"},{"name":"State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Zhou","sequence":"additional","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiuzhong","family":"Li","sequence":"additional","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lu","family":"Chen","sequence":"additional","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2354-6201","authenticated-orcid":false,"given":"Ruowen","family":"Liang","sequence":"additional","affiliation":[{"name":"Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"131901","DOI":"10.1016\/j.seppur.2025.132831","article-title":"Ligand-regulated oxygen vacancies in Ti-MOFs for visible-light-driven CO2 cycloaddition to cyclic carbonates","volume":"366","author":"Wu","year":"2025","journal-title":"Sep. 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