Article history: Different types of Cu-based nanoparticles, namely Cu O, Cu and CuO were homogeneously dispersed Received 28 April 2017 on cubic ordered mesoporous carbon CMK-8 (denoted as Cu O@CMK-8, Cu@CMK-8 and CuO@CMK-8, Received in revised form 4 August 2017 respectively) and their performances for catalytic reduction of 4-nitrophenol (4-NP) were comparatively Accepted 15 August 2017 studied. The average particle size of Cu O, Cu, and CuO nanoparticles conﬁned in CMK-8 were estimated Available online 20 August 2017 to be 4.0, 8.1, and 4.3 nm, respectively. In comparison to Cu@CMK-8 and CuO@CMK-8, the Cu O@CMK-8 −2 −1 nanocomposite exhibits an outstanding rate constant of 2.21 × 10 s and an exceptionally high activity Keywords: −1 −1 parameter of 203 s g when the actual Cu loading is considered. The uniform particle size distribution Cu Ordered mesoporous carbon along with high BET surface area and the ability to generate highly active nascent Cu(0) nanoparticles CMK-8 during the catalytic process activate both the 4-NP and BH to be efﬁciently adsorbed on the active Copper sites of Cu O@CMK-8. It is found that the catalytic properties of these Cu-based CMK-8 nanocomposites Nanoparticles 2 4-nitrophenol strongly depend on the state of Cu and
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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