文献类型：期刊文献

英文题名：Novel ultrathin Bi@Fe-based metal-organic frameworks nanosheets for efficient solar-driven photocatalytic water purification: Synergistic effect of localized surface plasmon resonance and high-density exposed metal active centers

作者：Song, Yanyu[1];Sun, Xianbo[1];Nghiem, Long D.[2];Duan, Jun[3];Liu, Wen[4];Liu, Yongdi[1];Cai, Zhengqing[1,5]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[2]Univ Technol Sydney, Ctr Technol Water & Wastewater, Sch Civil & Environm Engn, Ultimo, NSW 2007, Australia;[3]Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA;[4]Peking Univ, Coll Environm Sci & Engn, Key Lab Water & Sediment Sci, Minist Educ, Beijing 100871, Peoples R China;[5]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200237, Peoples R China

年份：2025

卷号：689

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20251018011058);WOS:【SCI-EXPANDED(收录号:WOS:001444371900001)】；

基金：This study was financially supported by the National Natural Science Foundation of China (22176061, 41807340) , Natural Science Founda-tion of Shanghai [21ZR1415600] , and the Science and Technology Commission of Shanghai Municipality (21230712000) .

语种：英文

外文关键词：2D Fe-MOFs nanosheets; Bi nanoparticles; Localized surface plasmon resonance; Exposed active sites; Solar-driven photocatalytic decontamination

摘要：Fe-based metal-organic frameworks (Fe-MOFs) have been extensively studied as fascinating photocatalysts due to their tunable structure and appealing light response. However, the application of traditional three-dimensional (3D) Fe-MOFs is limited by rapid carrier recombination and inaccessible active sites. In this work, a novel twodimensional (2D) Bi decorated Fe-MOFs nanosheet photocatalyst was constructed, which exhibits significantly enhanced solar-driven photocatalytic activity due to the synergistic effect of localized surface plasmon resonance (LSPR) and surface high-density exposed metal active sites. Unlike 3D structures, 2D nanosheets enable surface densely exposed Fe-O clusters, which can be conveniently triggered by incident light to improve light response. 2D Fe-MOFs exhibit narrower bandgap and faster electron transfer thanks to the superior electronic effects of ultrathin nanosheets, including quantum confinement, electron delocalization and induction effects. Moreover, the unique 2D structure drastically reduces mass transfer resistance and guarantees quick pollutant diffusion, thus achieving adequate contact between pollutants and more accessible reactive sites. Bi nanoparticles (NPs), a non-precious plasma metal, further facilitate carrier separation and migration through LSPR effect. Driven by local electromagnetic field, photoinduced hot electrons move from Bi NPs to 2D Fe-MOFs, where they contribute to the production of active species. Meanwhile, light scattering effect of Bi NPs endows the catalyst with boosted light absorption by prolonging the incident photons path. With carbamazepine as target pollutant, the photocatalysis rate of 2D Bi decorated Fe-MOFs (Bi@Fe-MOFs) under solar light is 10.3 times that of 3D Fe-MOFs. This work provides new insights for designing MOFs photocatalysts with efficient solar-driven photocatalytic water purification.