Cost-effective fabrication of (g-C3N4 + Mo) added photostable ZnO thin films for enhanced visible light responsive photocatalytic dye degradation

Journal Article · Sun Jul 15 04:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.03.007· OSTI ID:22804043

Sindhuja, E.; Shantha seelan, K. ^[1]

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1. Materials Science Research Laboratory, PG and Research Department of Physics, AVVM Sri Pushpam College (Autonomous), Poondi, Thanjavur 613 503, Tamil Nadu (India)

Highlights: • First report on ZnO:Mo/GCN films prepared by simple cost-effective jet nebulizer spray method for dye degradation. • A remarkable enhancement in the photocatalytic dye degradation efficiency is achieved for ZnO. • The mechanism for the enhanced degradation is explained on the basis of the obtained point of zero charge values. • Optical, PL, SEM and XPS studies support the discussion on the photocatalytic property of ZnO:Mo/GCN. - Abstract: The photocatalytic activity of ZnO:Mo/GCN (ZnO:Molybdenum/g-C{sub 3}N{sub 4}) thin films deposited using a simple cost-effective jet nebulizer spray pyrolysis technique with different Mo doping concentrations (1,2 and 3 at.%) was studied. The photocatalytic degradation test was carried out against Methylene blue (MB) and Rhodamine B (RhB) dyes under visible light. It is found that thin film of ZnO:Mo/GCN with 1 at.% of Mo exhibits superior photocatalytic efficiency compared with the other samples. The degradation rate constant of this sample is 0.0727 and 0.0268 min{sup −1} for the tested MB and RhB dyes, respectively which are nearly two times and four times greater than the respective rate constant values of pristine ZnO. The mechanism involved in the enhanced photocatalytic activity is addressed with the help of obtained results. The properties of the deposited samples are correlated appropriately with the photocatalytic efficiency of the samples. The photostability of the prepared catalysts is tested experimentally.

• OSTI ID: 22804043
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 103; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON NITRIDES
DOPED MATERIALS
FABRICATION
METHYLENE BLUE
MOLYBDENUM
PHOTOCATALYSIS
PYROLYSIS
REACTION KINETICS
RHODAMINES
SCANNING ELECTRON MICROSCOPY
SPRAYS
THIN FILMS
VISIBLE RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC OXIDES