Removal and recycling of aqueous selenite anions using cobalt-based metal–organic-framework coated on multi-walled carbon nanotubes composite membrane

This study prepared a novel composite membrane coated with the cobalt-based metal–organic framework coated on multi-walled carbon nanotubes (Co-MOF@MWCNTs). The composite membrane can also be used as an electrocatalytic material after removing selenite acid from wastewater. This strategy offers the dual advantage of removing selenium from wastewater and resource upgrading.