公开(公告)号：US20220194793A1

公开(公告)日：2022-06-23

申请号：US17603597

申请日：2020-03-09

申请人： FUDAN UNIVERSITY

发明人： Yonghui DENG ,  Yuan REN ,  Yidong ZOU

IPC分类号： C01B13/18 ,  C01G39/02 ,  C01G41/00

摘要： A method for preparing an ordered cross-stacked metal oxide nanowire array is provided. The method includes the following steps: conducting synthesis by using an amphiphilic diblock copolymer as a structure directing agent, tetrahydrofuran (THF) as a solvent and polyoxometalates (POMs) as an inorganic precursor, where the diblock copolymer can interact with POMs via an electrostatic force to form a core-shell cylindrical micelle in the solvent, which self-assembles to form an ordered multilayer-crossed organic-inorganic composite nanostructure during an evaporation process; the template is removed by calcination in air, thereby obtaining ordered and crossed metal oxide nanowires with various elements doping. The nanowire array material has a high specific surface area, a high crystallinity, and realizes uniform doping of heteroatoms.

公开(公告)号：US20220194811A1

公开(公告)日：2022-06-23

申请号：US17603587

申请日：2020-03-09

申请人： FUDAN UNIVERSITY

发明人： Yonghui DENG ,  Liangliang LIU ,  Yidong ZOU ,  Xuanyu YANG

IPC分类号： C01G23/053 ,  C01B32/15 ,  C01B33/113 ,  C01F7/30 ,  C01G25/02 ,  C01F17/32 ,  C01F17/235 ,  B32B18/00

摘要： A method for preparing two-dimensional (2D) ordered mesoporous nanosheets by inorganic salt interface-induced assembly includes the following steps: carrying out, by using a soluble inorganic salt as a substrate and an amphiphilic block copolymer as a template, uniform mass diffusion of a target precursor solution at an inorganic salt crystal interface through vacuum filtration or low-speed centrifugation; forming a single-layer ordered mesoporous structure by using the solvent evaporation-induced co-assembly (EICA) technology; and promoting, through gradient temperature-controlled Ostwald ripening, the evaporation and induced formation of an organic solvent, and removing the template in N2 to obtain a 2D single-layer ordered mesoporous nanosheet material. The assembled nanosheet material has a large pore size, regular spherical pores and orderly arrangement. By changing the type of the precursor, a variety of mesoporous metal oxides, metal elements, inorganic non-metal nanosheets are synthesized.