An novel catalyst based on Ni@C₃N₄ heterojunction for efficient reduction of Cr(VI)

Abstract

In order to effectively deal with chromium pollution in the environment, a heterojunction catalyst Ni@C3N4 was prepared via in-situ method. The nickel particles were deposited on the surface of O-C3N4. With the synergistic effect of O-C3N4 and nickel particles, The Cr(VI) could be reduced completely to Cr(Ⅲ) within 20 minutes at the present of Ni@C3N4 under ultraviolet irradiation. Therefore, the composite photocatalyst had demonstrated that it could play an important role in the field of heavy metal wastewater treatment.