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Issue 21, 2017
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Improving photocatalytic reduction of 4-nitrophenol over ZrO2–TiO2 by synergistic interaction between methanol and sulfite ions

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Abstract

The effect of two sacrificial agents (methanol and sodium sulfite) on the photocatalytic reduction of 4-nitrophenol employing a ZrO2–TiO2 photocatalyst is reported. The experimental results showed a decrease in the generation of OH˙ radicals and diminution in the charge transfer resistance that favor the electron transfer toward 4-nitrophenolate ions. Based on the results, it is possible to establish that methanol acts as a hole scavenger while sulfite ions act as radical scavengers, improving the reduction from 4-nitrophenol to 4-aminophenol. The synergistic effect has been corroborated by photoluminescence and photoelectrochemical measurements.

Graphical abstract: Improving photocatalytic reduction of 4-nitrophenol over ZrO2–TiO2 by synergistic interaction between methanol and sulfite ions

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Publication details

The article was received on 24 Jun 2017, accepted on 11 Sep 2017 and first published on 29 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ02260C
Citation: New J. Chem., 2017,41, 12655-12663
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    Improving photocatalytic reduction of 4-nitrophenol over ZrO2–TiO2 by synergistic interaction between methanol and sulfite ions

    D. Guerrero-Araque, P. Acevedo-Peña, D. Ramírez-Ortega and R. Gómez, New J. Chem., 2017, 41, 12655
    DOI: 10.1039/C7NJ02260C

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