Theoretical calculation based synthesis of a poly(p-phenylenediamine)–Fe3O4 composite: a magnetically recyclable photocatalyst with high selectivity for acid dyes

Siwei Yang; Caichao Ye; Xun Song; Lin He; Fang Liao

doi:10.1039/C4RA11138A

Theoretical calculation based synthesis of a poly(p-phenylenediamine)–Fe₃O₄ composite: a magnetically recyclable photocatalyst with high selectivity for acid dyes†

Siwei Yang,‡*^ab Caichao Ye,

‡^cd Xun Song,^a Lin He^a and Fang Liao*^a

Author affiliations

* Corresponding authors

^a Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, P. R. China
E-mail: liaozhang2003@163.com
Fax: +86 817 2568067
Tel: +86 817 2568067

^b State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China
E-mail: yangsiwei@mail.sim.ac.cn
Fax: +86 021 62511070 ext. 420
Tel: +86 021 62511070 ext. 420

^c School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

^d Materials and Process Simulation Center, California Institute of Technology, Pasadena 91125, USA

Abstract

A magnetically recyclable and highly photocatalytic poly(p-phenylenediamine)–Fe₃O₄ (PpPD–Fe₃O₄) composite photocatalyst was synthesised by a one-step chemical oxidation polymerisation based on theoretical calculation results. The band gap and selectivity of PpPD for acid dyes were studied by theoretical calculations. The calculation results showed that the PpPD molecules exhibited better conjugacy than PANI and that the band gap was more fit for use as a photocatalyst. The photocatalytic activities were evaluated by the degradation of various dyes. The stability and high selectivity of this composite was remarkable. The combination of Fe₃O₄ with PpPD lead to high photocatalytic activity in the degradation of the dyes under both ultraviolet, and visible light, irradiation, although Fe₃O₄ alone was inactive as a visible-light-driven photocatalyst.

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Article information

DOI: https://doi.org/10.1039/C4RA11138A
Article type: Paper
Submitted: 24 Sep 2014
Accepted: 17 Oct 2014
First published: 17 Oct 2014

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RSC Adv., 2014,4, 54810-54818

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Theoretical calculation based synthesis of a poly(p-phenylenediamine)–Fe₃O₄ composite: a magnetically recyclable photocatalyst with high selectivity for acid dyes

S. Yang, C. Ye, X. Song, L. He and F. Liao, RSC Adv., 2014, 4, 54810 DOI: 10.1039/C4RA11138A

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