Hwang, Jongkook Jo, Changshin Hur, Kahyun Lim, Jun Kim, Seongseop Lee, Jinwoo 2024-01-20T08:31:35Z 2024-01-20T08:31:35Z 2021-09-02 2014-11-12 0002-7863 https://pubs.kist.re.kr/handle/201004/126120 Hierarchically porous oxide materials have immense potential for applications in catalysis, separation, and energy devices, but the synthesis of these materials is hampered by the need to use multiple templates and the associated complicated steps and uncontrollable mixing behavior. Here we report a simple one-pot strategy for the synthesis of inorganic oxide materials with multiscale porosity. The inorganic precursor and block copolymer are coassembled into an ordered mesostructure (microphase separation), while the in situ-polymerized organic precursor forms organic-rich macrodomains (macrophase separation) around which the mesostructure grows. Calcination generates hierarchical meso/macroporous SiO2 and TiO2 with three-dimensionally interconnected pore networks. The continuous 3D macrostructures were clearly visualized by nanoscale X-ray computed tomography. The resulting TiO2 was used as the anode in a lithium ion battery and showed excellent rate capability compared with mesoporous TiO2. This work is of particular importance because it (i) expands the base of BCP self-assembly from mesostructures to complex porous structures, (ii) shows that the interplay of micro- and macrophase separation can be fully exploited for the design of hierarchically porous inorganic materials, and therefore (iii) provides strategies for researchers in materials science and polymer science. English AMER CHEMICAL SOC ONE-POT SYNTHESIS SPINODAL DECOMPOSITION PHASE-SEPARATION SILICA COPOLYMER NANOCOMPOSITES CARBON/SILICA MESOSTRUCTURE HOMOPOLYMER DESIGN Direct Access to Hierarchically Porous Inorganic Oxide Materials with Three-Dimensionally Interconnected Networks Article 10.1021/ja5091172 1 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.136, no.45, pp.16066 - 16072 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136 45 16066 16072 scie scopus 000344906100046 2-s2.0-84910019766 Chemistry, Multidisciplinary Chemistry Article ONE-POT SYNTHESIS SPINODAL DECOMPOSITION PHASE-SEPARATION SILICA COPOLYMER NANOCOMPOSITES CARBON/SILICA MESOSTRUCTURE HOMOPOLYMER DESIGN Block Copolymer Self-Assembly Hierarchical Structure Network Structure