One-dimensional metal hydroxide nanomaterials with macroscopically controlled orientation and aggregation: fascinating surface hydroxyl groups on anisotropic structures for functionalities

This review briefly describes recent advances on the fabrication methods affording macroscopically controlled orientation and aggregation of one-dimensional (1D) metal hydroxide nanomaterials and the structuralization-driven functional applications. A special attention is focused on the functionalization based on two approaches: 1) superhydrophobic adhesive surface, and monolithic cation-exchangers and photocatalysts by controlled orientation and aggregation of titanate nanotubes, 2) a supported catalyst, electrothermal sensor and switchable fluorescence film by the structuralization of metal organic framework (MOF) derived from orientation/aggregation-controlled copper hydroxide nanotubes/nanobelts.