Issue 87, 2017

Photoelectrocatalytic degradation of partially hydrolyzed polyacrylamide using a novel particle electrode

Abstract

Tetrapyrazinoporphyrazines and their metal derivatives (TPyzPzs) are the most widely studied class of phthalocyanines azaanalogues. The present study describes a two-step synthesis for the cobalt complex of tetra-2,3-(5,6-di-tert-butyl-pyrazino) porphyrazine (tBu-TPyzPzCo) starting from pivalil, 2,3-diaminomaleonitrile, metal salts, and urea. The product was ultrasonically impregnated onto carbon black (CB), wherein particle electrodes (tBu-TpyzPzCo/CB) were employed for the degradation of partially hydrolyzed polyacrylamide (HPAM) in a three-dimensional electrocatalytic system under xenon lamp. HPAM exhibited more efficient degradation in the presence of a supporting catalyst using the photoelectrocatalytic process than by photocatalytic or electrocatalytic oxidation or even the sum of the two in saline water. The effects of HPAM degradation on various parameters in the photoelectrocatalytic reactor, such as the catalyst dosage, following the application of a cell voltage and an electrolyte were investigated in detail. Hydroxyl radicals and superoxide radicals were determined as the main active species in the reaction. The reaction mechanism was also discussed.

Graphical abstract: Photoelectrocatalytic degradation of partially hydrolyzed polyacrylamide using a novel particle electrode

Article information

Article type
Paper
Submitted
22 Oct 2017
Accepted
22 Nov 2017
First published
07 Dec 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 55496-55503

Photoelectrocatalytic degradation of partially hydrolyzed polyacrylamide using a novel particle electrode

D. Wang, H. Li, G. Wu, R. Guo, L. Li, C. Zhao, F. Liu and Y. Wang, RSC Adv., 2017, 7, 55496 DOI: 10.1039/C7RA11658F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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