Efficient and selective removal of Congo red by a C@Mo composite nanomaterial using a citrate-based coordination polymer as the precursor

To research the effect of structural diversity on citrate-based coordination polymers (CPs), citric acid (H 4 cit) was selected to combine with Cu( ii ) under hydrothermal conditions. A new CP [Cu 2 (cit)(H 2 O) 2 ] ( 1 ) was synthesized and structurally characterized. The title complex shows a 3D 2,4,6-connected topology with the point symbol of {4 3 ·6 3 }{4 4 ·6 6 ·8 5 }{4}. Inspired by the decomposition and functional molybdenum component, 1 was used as a catalyst precursor to synthesize a carbon-based material ( C-1 ) and a C@Mo material ( C-Mo-1 ) by the chemical vapor deposition (CVD) method and characterized in detail. The selective removal of a contaminant (Congo red) by complex 1 , C-1 and C-Mo-1 in the aqueous phase was also comparatively investigated. A carbon-based material ( C-1 ) and a C@Mo material ( C-Mo-1 ) as novel efficient adsorbents with selective properties for the removal of organic dyes have been successfully synthesized by the CVD method from the catalyst precursor of a new Cu-cit CP.