A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation and enhanced photocatalytic activity of Pd–CuO/palygorskite nanocomposites
Abstract Silicate nanofibers (palygorskite, Pal) coated with CuO nanoparticles were prepared via a precipitation method using copper oxalate as a precursor and subsequently modified with PVP–Pd solution. Characterization by X-ray diffraction and transmission electron microscope demonstrated that the surfaces of the Pal fibers with 20–30nm in diameter and 400–500nm in length were uniformly decorated with CuO nanoparticles of 16nm in average size. The CuO/Pal and Pd–CuO/Pal nanocomposites exhibited higher photocatalytic activities than the pure CuO for the photodegradation of methyl orange under UV-light. The enhanced photocatalytic activity of CuO/Pal and Pd–CuO/Pal composites may be ascribed to the surface adsorption and efficient electron–hole separation at the coupled interface. The combination of nanoparticles and nano-scale fibers can lead to a remarkable improvement in photocatalytic activity; this concept can be expected to find interesting applications in the environmental field.
Graphical abstract Display Omitted Highlights ► Nanosized CuO was uniformly deposited on the surface of palygorskite (Pal) fibers. ► CuO/Pal nanocomposites exhibited higher photocatalytic activities than pure CuO. ► Mechanism for enhanced photocatalytic activity of nanocomposites was suggested.
Preparation and enhanced photocatalytic activity of Pd–CuO/palygorskite nanocomposites
Abstract Silicate nanofibers (palygorskite, Pal) coated with CuO nanoparticles were prepared via a precipitation method using copper oxalate as a precursor and subsequently modified with PVP–Pd solution. Characterization by X-ray diffraction and transmission electron microscope demonstrated that the surfaces of the Pal fibers with 20–30nm in diameter and 400–500nm in length were uniformly decorated with CuO nanoparticles of 16nm in average size. The CuO/Pal and Pd–CuO/Pal nanocomposites exhibited higher photocatalytic activities than the pure CuO for the photodegradation of methyl orange under UV-light. The enhanced photocatalytic activity of CuO/Pal and Pd–CuO/Pal composites may be ascribed to the surface adsorption and efficient electron–hole separation at the coupled interface. The combination of nanoparticles and nano-scale fibers can lead to a remarkable improvement in photocatalytic activity; this concept can be expected to find interesting applications in the environmental field.
Graphical abstract Display Omitted Highlights ► Nanosized CuO was uniformly deposited on the surface of palygorskite (Pal) fibers. ► CuO/Pal nanocomposites exhibited higher photocatalytic activities than pure CuO. ► Mechanism for enhanced photocatalytic activity of nanocomposites was suggested.
Preparation and enhanced photocatalytic activity of Pd–CuO/palygorskite nanocomposites
Huo, Chengli (author) / Yang, Huaming (author)
Applied Clay Science ; 74 ; 87-94
2012-07-01
8 pages
Article (Journal)
Electronic Resource
English
Preparation and enhanced photocatalytic activity of Pd–CuO/palygorskite nanocomposites
| Online Contents | 2013
Palygorskite- and Halloysite-TiO2 nanocomposites: Synthesis and photocatalytic activity
| Online Contents | 2010
Palygorskite-cerium oxide filled rubber nanocomposites
| Online Contents | 2012