TY - JOUR
T1 - Branched mesoporous TiO2 mesocrystals by epitaxial assembly of micelles for photocatalysis
AU - Zhang, Pengfei
AU - Tian, Zhangliu
AU - Hung, Chin Te
AU - Liu, Yong
AU - Jia, Bingquan
AU - Lan, Kun
AU - Kong, Biao
AU - Huang, Fuqiang
AU - Mai, Liqiang
AU - Zhao, Dongyuan
N1 - Funding Information:
This work was supported by the National Key R&D Program of China (2018YFA0209401 and 2017YFA0207303), NSFC (grant no. 21733003), and Science and Technology Commission of Shanghai Municipality (17JC1400100). We are grateful to Professor Jiaguo Yu of Wuhan University of Technology for strong support and materials characterization. Conceptualization, P.Z. and D.Z.; Methodology, P.Z. F.H. L.M. and D.Z.; Investigation, P.Z. Z.T. C.-T.H. Y.L. B.J. K.L. and B.K.; Writing ? Original Draft, P.Z. and D.Z.; Writing ? Review and Editing, P.Z. L.M. and D.Z.; Supervision, D.Z.; Funding Acquisition, D.Z. The authors declare no competing interests.
Publisher Copyright:
© 2020 The Authors
PY - 2020/7/22
Y1 - 2020/7/22
N2 - The understanding and control of the structural complexity of mesoporous semiconductors with single-crystal-like nature are both attractive and challenging. Here, we report a crystallization-driven epitaxial assembly from monomicelles to construct branched mesoporous TiO2 mesocrystals (m-TiO2 MCs) with coherent atomic domains. The star-shaped multipods are obtained by two-step evaporation with nanocrystal mediation, primarily consisting of arms along < 001 >, < 101 >, and < 111 > crystal directions. For each arm, ordered open mesochannels arrange in parallel along the growth direction. The m-TiO2 MC multipods have a surface area of ∼116 m2/g and single-crystal-like frameworks and are good hydrogen evolution photocatalysts. Under full-spectrum irradiation, the branched m-TiO2 MCs exhibit a hydrogen evolution rate of 8 mmol h−1 g−1, which is more than four times higher than that of commercial TiO2 P25. This crystallization-driven self-assembly approach may provide valuable insight into designing programmable mesoporous mesocrystals by controlling the oriented assembly of monomicelle building blocks.
AB - The understanding and control of the structural complexity of mesoporous semiconductors with single-crystal-like nature are both attractive and challenging. Here, we report a crystallization-driven epitaxial assembly from monomicelles to construct branched mesoporous TiO2 mesocrystals (m-TiO2 MCs) with coherent atomic domains. The star-shaped multipods are obtained by two-step evaporation with nanocrystal mediation, primarily consisting of arms along < 001 >, < 101 >, and < 111 > crystal directions. For each arm, ordered open mesochannels arrange in parallel along the growth direction. The m-TiO2 MC multipods have a surface area of ∼116 m2/g and single-crystal-like frameworks and are good hydrogen evolution photocatalysts. Under full-spectrum irradiation, the branched m-TiO2 MCs exhibit a hydrogen evolution rate of 8 mmol h−1 g−1, which is more than four times higher than that of commercial TiO2 P25. This crystallization-driven self-assembly approach may provide valuable insight into designing programmable mesoporous mesocrystals by controlling the oriented assembly of monomicelle building blocks.
UR - https://www.scopus.com/pages/publications/85100622044
U2 - 10.1016/j.xcrp.2020.100081
DO - 10.1016/j.xcrp.2020.100081
M3 - Article
AN - SCOPUS:85100622044
SN - 2666-3864
VL - 1
JO - Cell Reports Physical Science
JF - Cell Reports Physical Science
IS - 7
M1 - 100081
ER -