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Title: Light-dependent controlled synthesis and photocatalytic properties of stable Ag{sub 3} nanocrystals

The silver phosphate (Ag{sub 3}PO{sub 4}) is applied in organic matter photodegradation as a novel catalyst materials, however, its instability reduces the photocatalytic life and limits its further applications. In this work, a series of Ag{sub 3}PO{sub 4} crystalline nanoparticle clusters have been synthesized by a photocontrol method. By comparing their sunlight photocatalytic properties, the Ag{sub 3}PO{sub 4} nanoparticles with dominant (2 2 0) facets have a lower surface energy (1.05 J m{sup −2}) than existing Ag{sub 3}PO{sub 4} crystals which can offer a longer catalyst service life. The photodegradation rate of the Ag{sub 3}PO{sub 4} nanoparticles is about 3 times that of common Ag{sub 3}PO{sub 4} bulk materials and the sunlight is used as the power source instead of high cost artificial visible light sources in this catalytic system. An effective continuous photodegradation reactor using Ag{sub 3}PO{sub 4} nanoparticles is successfully fabricated to degrade rhodamine B solution. At the same time, this work provides an example for how oxidation photocatalyst works without extra adding sacrificial reagent.
Authors:
 [1] ;  [1] ;  [1] ;  [2]
  1. Key Laboratory for Advanced Materials, East China University of Science and Technology, Shanghai 200237 (China)
  2. Department of Chemistry, Chizhou University, Chizhou 247000 (China)
Publication Date:
OSTI Identifier:
22420718
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 60; 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; CATALYSTS; COMPARATIVE EVALUATIONS; CRYSTALS; LIGHT SOURCES; NANOPARTICLES; NANOSTRUCTURES; ORGANIC MATTER; OXIDATION; PHOTOCATALYSIS; REAGENTS; SEMICONDUCTOR MATERIALS; SILVER PHOSPHATES; SURFACE ENERGY; SYNTHESIS; VISIBLE RADIATION