Plasmonic Ag/Ag2O nanoparticles anchored needle-like Bi2O3 as an efficient visible-light-driven nanocomposite photocatalyst

Journal Article · Tue May 15 04:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.01.053· OSTI ID:22803984

Mohammadian Fard, Ziba ^[1]; Bagheri, Mozhgan ^[2]; Rabieh, Sasan ^[3]

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1. Faculty of Chemistry, Semnan University, Semnan (Iran, Islamic Republic of)
2. Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Karaj (Iran, Islamic Republic of)
3. University College of Environment, Standard Sq., Karaj (Iran, Islamic Republic of)

Highlights: • Deposition of plasmonic Ag/Ag{sub 2}O NPs on the surface of Bi{sub 2}O{sub 3}. • Synthesis of Ag/Ag{sub 2}O@Bi{sub 2}O{sub 3} by thermal-assisted precipitation. • SPR of Ag enhances use of solar energy and transfer of carriers. • Degradation of Reactive Black 5 by CCD model. - Abstract: In this study, a thermal-assisted precipitation method was applied for the uniform deposition of plasmonic Ag/Ag{sub 2}O nanoparticles on the surface of needle-like Bi{sub 2}O{sub 3} to synthesis Ag/Ag{sub 2}O@Bi{sub 2}O{sub 3} nanocomposite. The synthesized nanocomposite was characterized by different techniques including UV–vis spectrophotometry, X-ray diffraction (XRD), scanning electronic microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray mapping, and photoluminescence (PL). The visible-light-driven photocatalytic activities of Ag{sub 2}O@Bi{sub 2}O{sub 3} and Ag/Ag{sub 2}O@Bi{sub 2}O{sub 3} were evaluated on photo-degradation of Reactive Black 5 (RB 5) dye as model pollutant. The effect of process variables including the initial dye concentration, reaction time, and pH on the photo-degradation of RB 5 was studied by Central Composite Design (CCD) methodology. It was found that the photo-degradation rate of Ag/Ag{sub 2}O@Bi{sub 2}O{sub 3} was higher than that of the Ag{sub 2}O@Bi{sub 2}O{sub 3} and Bi{sub 2}O{sub 3}. The highly efficient photocatalytic activity of Ag/Ag{sub 2}O@Bi{sub 2}O{sub 3} nanocomposite is mainly ascribed to enhancing photogenerated electron-hole separation and the surface plasmon resonance (SPR) influence of silver-based nanoparticles.

• OSTI ID: 22803984
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 101; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
BISMUTH OXIDES
DEPOSITION
ELECTRON-HOLE COUPLING
NANOCOMPOSITES
NANOPARTICLES
NANOSTRUCTURES
PH VALUE
PHOTOCATALYSIS
PHOTOLUMINESCENCE
PLASMONS
PRECIPITATION
SCANNING ELECTRON MICROSCOPY
SILVER
SILVER OXIDES
SOLAR ENERGY
SPECTROPHOTOMETRY
SPECTROSCOPY
VISIBLE RADIATION
X-RAY DIFFRACTION