Fabrication of an α-MoO3 nanobelt membrane showing a three-dimensional cross-linked nano-scale network structure for water and oil mixture separation

Abstract

α-MoO₃ nanobelts with amphiphilic properties have been successfully fabricated via a hydrothermal method. The nanobelt membrane with a three-dimensional cross-linked nano-scale network structure was prepared on a filter paper surface by a suction filtration process. After being modified with water, the wetted membrane could be applied for the separation of nonpolar liquids and water, especially in emulsions. The separation process was simple, without employing any extra power, and the nanobelt membrane was easily recyclable. Based on this study, a separation mechanism was proposed. Our results suggest an innovative inorganic material that has excellent oil/water selectivity in the cleanup of oil from water.