{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T15:45:13Z","timestamp":1792079113770,"version":"4.4.0"},"reference-count":57,"publisher":"Wiley","issue":"36","license":[{"start":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T00:00:00Z","timestamp":1782950400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T00:00:00Z","timestamp":1782950400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22578327"],"award-info":[{"award-number":["22578327"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22578328"],"award-info":[{"award-number":["22578328"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2026,9,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    CH\n                    <jats:sub>4<\/jats:sub>\n                    \u2010rich coal\u2010bed methane (CBM) is often contaminated with N\n                    <jats:sub>2<\/jats:sub>\n                    , but their similar properties make conventional separation energy\u2010intensive and inefficient. Herein, we report a photocatalytic strategy for selective N\n                    <jats:sub>2<\/jats:sub>\n                    conversion over CH\n                    <jats:sub>4<\/jats:sub>\n                    , achieving simultaneous CBM purification and nitrogen valorization. A Co\u2010Ni metal\u2010organic framework (CoNi\u2010PYZ) features isolated bimetallic sites, where ligand\/Co units donate electrons to Ni, establishing spatially separated reduction and oxidation centers. This structural motif drives a photocatalytic cascade nitrogen fixation that N\n                    <jats:sub>2<\/jats:sub>\n                    is first reduced to NH\n                    <jats:sub>3<\/jats:sub>\n                    at the Ni sites; subsequently, the generated NH\n                    <jats:sub>3<\/jats:sub>\n                    outcompetes CH\n                    <jats:sub>4<\/jats:sub>\n                    for the Co sites, leading to its oxidation to NO\n                    <jats:sub>3<\/jats:sub>\n                    <jats:sup>\u2013<\/jats:sup>\n                    . This remarkable selectivity is governed by the high polarity and lone\u2010pair electron donation of NH\n                    <jats:sub>3<\/jats:sub>\n                    , favoring its adsorption over nonpolar CH\n                    <jats:sub>4<\/jats:sub>\n                    . Notably, the optimal catalyst achieves high activity under mild conditions without sacrificial agents, delivering NH\n                    <jats:sub>4<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    and NO\n                    <jats:sub>3<\/jats:sub>\n                    <jats:sup>\u2013<\/jats:sup>\n                    production rates of 599.8 and 199.8\u00a0\u00b5mol g\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    h\n                    <jats:sup>\u2212<\/jats:sup>\n                    <jats:sup>1<\/jats:sup>\n                    , respectively. Mechanism analysis reveals that ligand engineering optimizes the d\u2010band center to balance adsorption and desorption, thereby minimizing the rate\u2010determining step barriers for both half\u2010reactions, consistent with the Sabatier principle. This work provides a reaction\u2010driven alternative to traditional phase\u2010separation, establishing a novel paradigm for CBM upgrading coupled with selective N\n                    <jats:sub>2<\/jats:sub>\n                    transformation.\n                  <\/jats:p>","DOI":"10.1002\/anie.6707086","type":"journal-article","created":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T16:27:20Z","timestamp":1783009640000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Photocatalytic Cascade Nitrogen Fixation for Selective Purification of Methane\u2010Rich Coal\u2010Bed Gas Over a Bimetallic MOF"],"prefix":"10.1002","volume":"65","author":[{"given":"Jian","family":"Li","sequence":"first","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. China"},{"name":"Cangzhou Institute of Tiangong University  Cangzhou P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenli","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenfa","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenjuan","family":"Xue","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9794-5286","authenticated-orcid":false,"given":"Xiangyu","family":"Guo","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9690-9259","authenticated-orcid":false,"given":"Hongliang","family":"Huang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7546-5580","authenticated-orcid":false,"given":"Jiandong","family":"Pang","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering TKL of Metal and Molecule\u2010Based Material Chemistry National Institute for Advanced Materials Nankai University  Tianjin P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7921-9923","authenticated-orcid":false,"given":"Chongli","family":"Zhong","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Separation Membrane Materials School of Chemistry and Chemical Engineering School of Materials Science and Engineering Tiangong University  Tianjin P.R. 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