Photoinduced synthesis of inorganic nanomaterials has attracted great attention recently. Herein, we demonstrate the facile photoinduced synthesis of Bi2O3 nanotubes with a uniform pore size of about 2.2 nm at room temperature. Ultraviolet irradiation promoted the crystallization of amorphous bismuth hydroxide into bismuth oxide. The formation of this special tubular morphology of a-Bi2O3 was attributed to the small size of the bismuth hydroxide precursor and oriented attachment mechanism. What's more, a-Bi2O3 nanotubes \ncan further convert to Bi2O2CO3 nanosheets in organic solution with ultraviolet irradiation.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the National Basic Research Program of China (No. 2013CB933402 and 2016YFA0301004) and National Natural Science Foundation of China (No. 21527803, 21471009, and 21621061). We also thank Sinopec for the financial support.