Photocatalytic CO2 reduction and environmental remediation using mineralization of toxic metal cations products

Exploring a sustainable route for the efficient treating/recycling of heavy metal (like Ni2+, Cd2+, Cu2+) contamination water is highly desirable both from environment and resource view. Herein, we reported scale-up synthesis monolayer magnesium-aluminium layered double hydroxide (m-MgAl-LDH) nanosheets, which showed exceptional ability to mineralize Cd2+ Cu2+ rapidly efficiently. Furthermore, m-MgAl-LDH can purify 1 ppm Cu2+, Ni2+ safe levels. The sorption sites ions were revealed. substitute Mg2+ within MgAl-LDH layers, while anchor on surface with high dispersion. mineralized products cations further excellent performance in visible-light-induced photocatalytic reduction CO2 removal anions PO43- toxic AsO2- ions) efficiently, providing an alternative mitigation energy crisis.