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@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.

Keywords

• reduction of Cr(VI)
• heterojunction
• photocatalysis
• C3N4
• nickel nanoparticles