Cu/Cu2O/CuO loaded on the carbon layer derived from novel precursors with amazing catalytic performance

Abstract

• We present an effective catalyst for reductive degradation of organic dyes and phenols in water.• Compared with noble metals, Cu/Cu 2 O/ CuO@C particles are more efficient and less expensive • The porous structure provided a large contact area and channels for the pollutions and active site. , infrared spectroscopy and Raman analysis, revealed that it was composed of graphitized carbon with numerous nanoparticles (100 nm in diameter) of Cu/CuO/Cu 2 O that were uniformly distributed on internal and external surfaces of the carbon support. Gallic acid (GA) has been used as both organic ligand and carbon precursor with metal organic frameworks (MOFs) as the sacrificial template and metal oxide precursor in this green synthesis. The material combined the advantages of MOFs and Cu-containing materials, the porous structure provided a large contact area and channels for the pollutions, which results in more rapid catalytic degradation of pollutants and leads to greater efficiency of catalysis. The material gave excellent catalytic performance for organic dyes and phenols. In this study, Cu/Cu 2 O/CuO@C was used as catalytic to reduce 4-NP, which has been usually adopted as a model reaction to check the catalytic ability. Catalytic experiment results show that 4-NP was degraded approximately 3 min by use of 0.04 mg of catalyst and the conversion of pollutants can reach more than 99%. The catalyst exhibited little change in efficacy after being utilized five times. Rates of degradation of dyes, such as Methylene blue (MB) and Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v Rhodamine B (RhB) and phenolic compounds such as O-Nitrophenol (O-NP) and 2-Nitroaniline (2-NA) were all similar.

MOF-Derived Cu@Cu2O Nanocatalyst for Oxygen Reduction Reaction and Cycloaddition Reaction

“…This ratio was found to be an important factor affecting the catalytic activity [ 19 , 20 ]. Such copper-copper oxide (Cu-CuO, Cu-Cu 2 O, Cu 2 O-CuO) core-shell nanoparticles are widely used as catalysts for several organic transformations, including cross-coupling reactions, cycloaddition reactions, catechol oxidation reactions, styrene oxidation reactions, CO oxidation, photocatalytic degradation and reductive degradation [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. In addition, when combined with other metal species or supports, copper/copper oxide hybrid nanoparticles not only exhibit better catalytic activity, but also present superior stability and physicochemical properties.…”

Highly Efficient, Rapid, and Simultaneous Removal of Cationic Dyes from Aqueous Solution Using Monodispersed Mesoporous Silica Nanoparticles as the Adsorbent

“…Up to now, many approaches have been developed to deal with dye contaminants in wastewater, including adsorption [ 8 , 9 ], flocculation [ 10 ], coagulation [ 11 ], electrolysis [ 12 ], biodegradation [ 13 ], and photocatalytic degradation [ 14 , 15 , 16 ]. Among these methods and techniques, adsorption is considered to be a promising strategy due to its inherently high efficiency, economic feasibility, good biocompatibility, and simplicity in operation [ 6 , 17 , 18 ].…”

CuO/Cu2O nanowire arrays grafted by reduced graphene oxide: synthesis, characterization, and application in photocatalytic reduction of CO2

“…7 The modi-cation of copper oxides with some highly conductive carbon materials could improve their performance. 19,20 Reduced graphene oxide (rGO) is a promising additive for hybrid materials, because of its unique properties such as superior mobility of charge carriers, extremely high specic surface area, and excellent conductivity. 21,22 Thus, rGO may be added to the CuO/ Cu 2 O system to improve the photocatalytic performance for CO 2 reduction.…”