An novel catalyst based on Ni@C 3 N 4 heterojunction for efficient reduction of Cr(VI)

In order to effectively deal with chromium pollution in the environment, a heterojunction catalyst Ni@C 3 N 4 was prepared via in situ method. The nickel particles were deposited on the surface of O-C 3 N 4 . With the synergistic effect of O-C 3 N 4 and nickel particles, The Cr(VI) could be reduced completely to Cr(III) within 20 min at the present of Ni@C 3 N 4 under ultraviolet irradiation. Therefore, the composite photocatalyst had demonstrated that it could play an important role in the field of heavy metal wastewater treatment.