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Title: Quaternary heterostructured Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} composite: Synthesis and enhanced visible-light-driven photocatalytic activity

In this work, a novel quaternary heterostructured Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} composite was fabricated through a low-temperature solution-phase route. The XRD, SEM, EDX and XPS results indicated the as-prepared sample is a four-phase composite of Bi{sub 2}O{sub 2}CO{sub 3}, Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}, Bi{sub 2}MoO{sub 6}, and Ag. The photocatalytic activities of the as-synthesized samples were evaluated towards the degradation of phenol red aqueous solution. The results showed that the as-synthesized Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} photocatalysts displayed much higher photocatalytic activities in comparison with pure Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}, pure Bi{sub 2}MoO{sub 6}, and Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} composite. Among them, the 2.5% Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} sample performed the best. The enhanced photocatalytic activity of the composite photocatalyst was attributed predominantly to the efficient separation of photoinduced electrons and holes. In addition, Ag nanoparticles were photodeposited on the surface of the composite to increase visible-light absorption via the surface plasmon resonance, which is also beneficial to the enhancement of photocatalytic performance. The possible photocatalytic mechanism of the quaternary heterostructure was also discussed in detail. - Graphical abstract: Quaternary heterostructured Ag–Bi{sub 2}O{sub 2}CO{submore » 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} were fabricated. The as-synthesized Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} photocatalysts displayed much higher photocatalytic activities in comparison with pure Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}, pure Bi{sub 2}MoO{sub 6}, and Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} composite. - Highlights: • Quaternary heterostructured Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} composites were fabricated. • Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} samples were characterized by various characterization technologies. • Ag–Bi{sub 2}O{sub 2}CO{sub 3}/Bi{sub 3.64}Mo{sub 0.36}O{sub 6.55}/Bi{sub 2}MoO{sub 6} composites presented excellent photocatalytic performances.« less
Authors:
 [1] ; ; ;  [1] ;  [2] ;  [1]
  1. Key Laboratory of Preparation and Application Environmentally Friendly Materials of Ministry of Education, Jilin Normal University, Siping 136000, PR China (China)
  2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China (China)
Publication Date:
OSTI Identifier:
22486752
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 229; Other Information: Copyright (c) 2015 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:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AQUEOUS SOLUTIONS; BISMUTH COMPOUNDS; COBALT OXIDES; COMPARATIVE EVALUATIONS; COMPOSITE MATERIALS; HETEROJUNCTIONS; HOLES; MOLYBDATES; NANOPARTICLES; PHENOL; PHOTOCATALYSIS; PLASMONS; SCANNING ELECTRON MICROSCOPY; SILVER COMPOUNDS; SURFACES; SYNTHESIS; VISIBLE RADIATION; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY