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Title: Large-scale synthesis of hierarchical-structured weissite (Cu{sub 2−x}Te) flake arrays and their catalytic properties

Graphical abstract: - Highlights: • Large-scale Cu{sub 2−x}Te flake arrays grown on copper foam were synthesized. • They possess superior catalytic efficiency on methylene blue with the assistance of H{sub 2}O{sub 2}. • The effects of preparing conditions on the growth of Cu{sub 2−x}Te flake arrays were investigated. - Abstract: Large-scale weissite (Cu{sub 2−x}Te) flake arrays with three-dimensional (3D) hierarchical structure have been successfully fabricated via a facile one-step solution-phase strategy through the reaction of tellurium powder and copper foam. At the end of the reaction Cu{sub 2−x}Te flakes were distributed evenly on the surface of a porous solid copper substrate. Field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analysis showed the abundance of flakes grown on the 3D porous copper architecture, while X-ray diffraction (XRD) and energy-dispersive X-ray spectra (EDS) were used to determine the crystal structure and phase composition of these products. A series of experiments discovered that the size and morphology of the products could be affected by some reactive parameters including the reaction time, synthesis temperature and volume ratio of absolute ethanol/deionized water. Catalysis experiments using the in situ synthesized of Cu{sub 2−x}Te flakes to catalyze the degradation of methylene blue (MB) demonstrated themore » strong catalytic ability of these flakes.« less
Authors:
 [1] ;  [2] ; ; ; ;  [1] ;  [1]
  1. State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab), School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096 (China)
  2. School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210046 (China)
Publication Date:
OSTI Identifier:
22348609
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 51; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CATALYSIS; COPPER; CRYSTAL STRUCTURE; EFFICIENCY; ETHANOL; FIELD EMISSION; METHYLENE BLUE; POROUS MATERIALS; SCANNING ELECTRON MICROSCOPY; SOLIDS; SOLUTIONS; SUBSTRATES; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; WATER; X-RAY DIFFRACTION; X-RAY SPECTRA