One-dimensional hierarchical Bi2WO6 hollow tubes with porous walls: synthesis and photocatalytic property

• DOI: 10.1039/c3ce40237a
• Publication Date: 2013-03-19T12:09:23Z
• Authors: Shu-Juan Liu; Ya-Fei Hou; Sheng-Liang Zheng; Yu Zhang; You Wang
• Keywords: Kirkendall Effect; Rod; Ethanol content

One-dimensional hierarchical Bi2WO6 hollow tubes with porous walls have been solvothermally synthesized using Bi2O3 rods as both template and reactant, characterized by FESEM, TEM XRD. Experimental results indicate that the of these micro-tubes are made nanoplates stacking in a disordered state, which creates an interesting macro-mesoporous structure. Influencing factors on resulting products including adding order reactants, ethanol content, pH value systematically investigated. A possible mechanism based Kirkendall effect is proposed. What more, comparison commercial TiO2 powders (P25) tube structure exhibits superior shape-associated photocatalytic activity degrading RhB under simulated sunlight irradiation. The high performance can be attributed to novel structure, enables good permeability, large BET surface areas, proper energy band. Moreover, employed "sacrificial template" method extended synthesis other Bi-based photocatalysts successfully.