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Here we report a floating, confining aerogel that couples broadband light absorption with dual\u2010scale photothermal regulation. The confining aerogel immobilizes FBBov@MoS\n                    <jats:sub>2<\/jats:sub>\n                    catalytic units within a hierarchically porous exoskeleton, enabling full\u2010spectrum (UV\u2013Vis\u2013NIR, 320\u20132500\u00a0nm) harvesting and the formation of spatially confined photothermal domains. Under full\u2010spectrum irradiation the construct simultaneously generates long\u2010lived microscale hotspots at the catalyst\u2010liquid interface (&gt; 19.5\u00b0C increase) and macroscopic heat accumulation at the air\u2013water boundary (\u0394\n                    <jats:italic>T<\/jats:italic>\n                    \u2248 9.5\u00b0C at 10\u00b0C), producing a synergistic photothermal field that accelerates charge separation and surface redox chemistry. Consequently, the confining aerogel achieves 99.1% tetracycline degradation within 120\u00a0min at 10\u00b0C and retains high activity (\u2248 92% removal) even at 6\u00b0C. Mechanistic probes identify \u2022O\n                    <jats:sub>2<\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    and \u2022OH as dominant reactive oxygen species and confirm that UV initiates high\u2010energy carrier pathways, visible light sustains carrier flux, while NIR enforces photothermal promotion\u2014their coupled action yields a nonlinear performance enhancement. The material also demonstrates broad pollutant scope, excellent durability over 28 days, and effective operation in real river water. This dual\u2010scale photothermal\u2013photocatalytic coupling constitutes a generalizable design principle for high\u2010performance photocatalysis in cold environments.\n                  <\/jats:p>","DOI":"10.1002\/smll.74394","type":"journal-article","created":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T10:36:24Z","timestamp":1783679784000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Full\u2010Spectrum\u2010Activated Confining Aerogel With Dual\u2010Scale Photothermal Regulation for Ultra\u2010Efficient Low\u2010Temperature Water Purification"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-6937-8770","authenticated-orcid":false,"given":"Jiaxin","family":"Ni","sequence":"first","affiliation":[{"name":"Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences  Chongqing People's Republic of China"},{"name":"Chongqing School University of 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Academy of Sciences  Chongqing People's Republic of China"},{"name":"Chongqing School University of Chinese Academy of Sciences  Chongqing People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2056-8600","authenticated-orcid":false,"given":"Dongmei","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Urban\u2010rural Water Resource and Environment School of Environment Harbin Institute of Technology  Harbin People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zongsu","family":"Wei","sequence":"additional","affiliation":[{"name":"Centre for Water Technology (WATEC) Department of Biological and Chemical Engineering Aarhus University  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9429-5780","authenticated-orcid":false,"given":"Zipeng","family":"Xing","sequence":"additional","affiliation":[{"name":"Department of Environmental Science School of Chemistry and Materials Science Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People's Republic of China Heilongjiang University  Harbin People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong","family":"Liu","sequence":"additional","affiliation":[{"name":"Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences  Chongqing People's Republic of China"},{"name":"Chongqing School University of Chinese Academy of Sciences  Chongqing People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,10]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s44221\u2010025\u201000400\u20103"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c14073"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.4c07699"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1039\/d5ta00415b"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.heliyon.2024.e25955"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41893\u2010025\u201001591\u2010z"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apcatb.2024.124533"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.est.5c00209"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.3866\/Pku.Whxb201905087"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jwpe.2024.105000"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.matt.2022.06.004"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.0c05354"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201061185\u20103"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.est.9b07903"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.adx7189"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202408185"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.5c05361"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2021.129969"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1039\/d3en00216k"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201060636\u20101"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202509444"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202500733"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.4c05707"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsmaterialslett.5c00413"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/advs.202412214"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.watres.2025.124332"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202508960"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1038\/s43246\u2010025\u201000747\u2010w"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201056339\u20102"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsenergylett.3c02218"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929\u2010026\u201001500\u20103"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.carbon.2022.09.026"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jclepro.2025.146368"},{"key":"e_1_2_9_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apcatb.2025.125904"},{"key":"e_1_2_9_36_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2025.169441"},{"key":"e_1_2_9_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.seppur.2025.134562"},{"key":"e_1_2_9_38_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.5c14486"},{"key":"e_1_2_9_39_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c11357"},{"key":"e_1_2_9_40_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202512757"},{"key":"e_1_2_9_41_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2025.164097"},{"key":"e_1_2_9_42_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apcatb.2025.125858"},{"key":"e_1_2_9_43_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.est.4c14335"},{"key":"e_1_2_9_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202416283"},{"key":"e_1_2_9_45_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201701266"},{"key":"e_1_2_9_46_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2019.107303"},{"key":"e_1_2_9_47_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.nanoen.2025.111238"},{"key":"e_1_2_9_48_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.memsci.2025.124381"},{"key":"e_1_2_9_49_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2025.161072"},{"key":"e_1_2_9_50_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201060951\u20107"},{"key":"e_1_2_9_51_1","doi-asserted-by":"publisher","DOI":"10.1039\/d2ta00838f"},{"key":"e_1_2_9_52_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsaem.4c02496"},{"key":"e_1_2_9_53_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.est.4c10364"},{"key":"e_1_2_9_54_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.watres.2025.123345"},{"key":"e_1_2_9_55_1","unstructured":"C.Ma 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