g-C{sub 3}N{sub 4}/NaTaO{sub 3} organic–inorganic hybrid nanocomposite: High-performance and recyclable visible light driven photocatalyst

Journal Article · Wed Jan 01 04:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.09.013· OSTI ID:22341840

Kumar, Santosh ^[1]; Kumar, Bharat ^[2]; Surendar, T. ^[1]; Shanker, Vishnu ^[1]

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1. Department of Chemistry, National Institute of Technology Warangal, 506004 A.P. (India)
2. Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016 (India)

Graphical abstract: High-performance and recyclable visible-light driven g-C{sub 3}N{sub 4}/NaTaO{sub 3} hybrid nanocomposite photocatalysts have been prepared by a facile ultrasonic dispersion method. The hybrid nanocomposite photocatalyst can be promising photocatalytic material for practical application in water splitting and environmental remediation. - Highlights: • Novel g-C{sub 3}N{sub 4}/NaTaO{sub 3} nanocomposites as a high performance and recyclable photocatalysts. • These catalysts exhibited significantly enhanced photocatalytic activity under UV–visible light irradiation. • More attractively, dramatic activity is generated under visible light irradiation due to the g-C{sub 3}N{sub 4} loaded. • Interestingly, the as-prepared hybrid nanocomposites possess high reusability. - Abstract: Novel g-C{sub 3}N{sub 4}/NaTaO{sub 3} hybrid nanocomposites have been prepared by a facile ultrasonic dispersion method. Our results clearly show the formation of interface between NaTaO{sub 3} and g-C{sub 3}N{sub 4} and further loading of g-C{sub 3}N{sub 4} did not affect the crystal structure and morphology of NaTaO{sub 3}. The g-C{sub 3}N{sub 4}/NaTaO{sub 3} nanocomposites exhibited enhanced photocatalytic performance for the degradation of Rhodamine B under UV–visible and visible light irradiation compared to pure NaTaO{sub 3} and Degussa P25. Interestingly, the visible light photocatalytic activity is generated due to the loading of g-C{sub 3}N{sub 4}. A mechanism is proposed to discuss the enhanced photocatalytic activity based on trapping experiments of photoinduced radicals and holes. Under visible light irradiation, electron excited from the valance band (VB) to conduction band (CB) of g-C{sub 3}N{sub 4} could directly inject into the CB of NaTaO{sub 3}, making g-C{sub 3}N{sub 4}/NaTaO{sub 3} visible light driven photocatalyst. Since the as-prepared hybrid nanocomposites possess high reusability therefore it can be promising photocatalyst for environmental applications.

• OSTI ID: 22341840
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 49; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NITRIDES
CATALYSTS
CRYSTAL STRUCTURE
DISPERSIONS
IRRADIATION
NANOCOMPOSITES
NANOSTRUCTURES
PHOTOCATALYSIS
SYNTHESIS
WATER