1. Top-down fabrication of hematite mesocrystals with tunable morphologies.
- Author
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Cai, Jinguang, Chen, Suyue, Hu, Jun, Wang, Zhi, Ma, Yurong, and Qi, Limin
- Subjects
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HEMATITE crystals , *CHEMICAL synthesis , *NANOROD synthesis , *PHOTOCATALYSIS , *CRYSTAL structure research - Abstract
Novel hematite mesocrystals including hierarchical microcones and microdiscs were synthesized by selective HCl etching of hematite pseudocubes. These porous mesocrystals adopting a single-crystal-like structure consist of radially aligned α-Fe2O3 nanorods, which elucidates the intrinsic mesocrystalline structure of the initial hematite pseudocubes. The hematite mesocrystals exhibited enhanced visible-light photocatalytic activity and high Cr(vi) removal capacity. This result provides an effective top-down approach towards mesocrystals with tunable morphologies and architectures. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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