A new hierarchical porous zirconium phosphate membrane and its adsorption properties

• A new hierarchical porous zirconium phosphate membrane was prepared.
• The porous structures were found to be bridged and limited by edge of (–Si–O–)n.
• The porous membrane has a high adsorption efficiency on Cu2+ ions.

A hierarchical porous zirconium phosphate membrane was prepared from bis(hexamethylenetriaminepenta(methylenephosphonic acid)), ZrOCl2·8H2O, SiF4 and hexadecyl trimethyl ammonium bromide. The membrane contains macropores of 200 nm in diameter, and mesopores of 19.2 nm in diameter. The membranes pores were bridged and limited by (–Si–O–)n edges. The porous membrane exhibited high efficiency in removing Pb2+ and Cu2+ from wastewater.

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