Metal organic framework derived Cu–carbon composite: An efficient non-noble metal catalyst for reduction of hexavalent chromium and pendimethalin

A Cu–carbon composite was facilely synthesized via one step calcination of a Cu-based metal organic frameworks (MOF), HKUST-1, under N₂ atmosphere. Physicochemical characteristics of the composite were examined with a series of spectroscopy and surface analyzer. The composite was used as a catalyst in the reduction of Cr(VI) and pendimethalin using HCOOH and NaBH₄ as reductants, respectively. The composite was very efficient in both reduction reactions, completing the reactions in several minutes. The composite also exhibited a robust reusability in the completion of four repeated Cr(VI) reduction cycles, demonstrating its potential utility as an alternative to noble-metal catalysts.