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Materials 2016, 9(6), 457; doi:10.3390/ma9060457

Synergetic Effect of Ultrasound, the Heterogeneous Fenton Reaction and Photocatalysis by TiO2 Loaded on Nickel Foam on the Degradation of Pollutants

1
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150006, China
2
State Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150006, China
*
Author to whom correspondence should be addressed.
Academic Editors: Carlos Lodeiro, Jose Luis Capelo, Elisabete Oliveira and Hugo M. Santos
Received: 30 March 2016 / Revised: 4 May 2016 / Accepted: 17 May 2016 / Published: 8 June 2016
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Abstract

The synergistic effect of ultrasound, the heterogeneous Fenton reaction and photocatalysis was studied using a nickel foam (NF)-supporting TiO2 system and rhodamine B (RhB) as a target. The NF-supporting TiO2 system was prepared by depositing TiO2 on the skeleton of NF repeatedly and then calcining it. To optimize the conditions and parameters, the catalytic activity was tested in four systems (ultrasound alone (US), nickel foam (NF), US/NF and NF/US/H2O2). The optimal conditions were fixed at 0.1 g/mL NF, initial 5.00 mg/L RhB, 300 W ultrasonic power, pH = 3 and 5.00 mg/L H2O2. The effects of the dissolution of nickel from NF and quenching of the Fenton reaction were studied on degradation efficiency. When the heterogeneous Fenton reaction is combined with TiO2-photocatalysis, the pollutant removal efficiency is enhanced significantly. Through this synergistic effect, 22% and 80% acetochlor was degraded within 10 min and 80 min, respectively. View Full-Text
Keywords: Fenton reaction; nickel foam; TiO2; photocatalysis; acetochlor Fenton reaction; nickel foam; TiO2; photocatalysis; acetochlor
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Qiu, S.; Xu, S.; Li, G.; Yang, J. Synergetic Effect of Ultrasound, the Heterogeneous Fenton Reaction and Photocatalysis by TiO2 Loaded on Nickel Foam on the Degradation of Pollutants. Materials 2016, 9, 457.

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