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Novel Nano-Flowers of Nb2O5 by Template Free Synthesis and Enhanced Photocatalytic Response Under Visible Light

Idrees, Faryal and Cao, Chuan Bao and Ahmed, Rashid and Butt, Faheem K. and Butt, Sajid A. and Tahir, Muhammad Shamir and Tanveer, Muhammad Iftekhar and Aslam, Imran and Ali, Zulfiqar (2015) Novel Nano-Flowers of Nb2O5 by Template Free Synthesis and Enhanced Photocatalytic Response Under Visible Light. Science Of Advanced Materials, 7 (7). pp. 1298-1303. ISSN 1947-2935

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Official URL: http://dx.doi.org/10.1166/sam.2015.2044

Abstract

Niobium pentoxide (Nb2O5) has attracted considerable interest owing to its potential applications. A facile surfactant and template free hydrothermal method has been adopted to synthesize novel nanoflowers of Nb2O5. The incomplete oxidation process was completed by annealing in air at 400°C for 1 h. The initial band gap value varied from 3.1 eV to 2.9 eV with a red shift of 27.5 nm. Time dependent experiments were performed to understand growth mechanism. RhB under visible light was degraded by using Nb2O5 nanoflowers before and after annealing. The photdegradation constant k: 0.89 h-1 and 2.62 h-1 were calculated, respectively. The rate constant of Nb2O5 nanoflowers after annealing was found larger than commercial Nb2O5, Commercial TiO2 Degussa P25, HTiNbO5, N-TiO2, SnNb2O6 nanosheets, Bi3NbO7 nanocomposites and C, N-codoped InOOH microspheres.

Item Type:Article
Uncontrolled Keywords:hydrothermal, nanoflowers, optical properties, photocatalysis, semiconductor
Subjects:A General Works
ID Code:58660
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:13 Apr 2017 09:43

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