Synthesis, and New Design into Enhanced Photocatalytic Activity of Porphyrin Immobilization on the Surface of Bismuth Ox
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Synthesis, and New Design into Enhanced Photocatalytic Activity of Porphyrin Immobilization on the Surface of Bismuth Oxyhalides Modified with Polyaniline Marzieh Yaghoubi‑berijani1 · Bahram Bahramian1 Received: 28 March 2020 / Accepted: 27 June 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract One important topic to recovery the photocatalytic process is to prevent the recombination of electrons and holes generated by light excitation of the photocatalyst. Different strategies have been used for this purpose. Composite of compounds is an appropriate way to reduce the recombination. On the other hand, to optimize the use of visible light, components can be composited with visible active components. In this article, sensitization with porphyrin and tin porphyrin complex was carried out using solar light for more activation of composite in visible light. The results on the synthesis of BiOBr/BiOCl/ PANI@TCPP (BPT) and BiOBr/BiOCl/PANI@SnTCPP (BPST) nanocomposites were reported using a simple method. The resulting nanocomposites were characterized by the XRD, FT-IR, FE-SEM equipped with EDS, PL, Raman, and UV–Vis DRS analytical techniques. Furthermore, the photocatalytic activity of nanocomposites sensitized with porphyrin for degradation of methyl orange (MO) as the model organic pollutant was investigated. The maximum degradation efficiency of 96% is achieved under visible light irradiation within 10 min. The photocatalytic performance of BPT and BPST nanocomposites was much higher than that of BiOBr/BiOCl/PANI (BP). Keywords Bismuth oxyhalide · Tin porphyrin · Photodegradation · Self-cleaning · Visible light
1 Introduction Organic pollutants with high toxicity require effective techniques to convert them into non-hazardous compounds. The chemical degradation methods are the main techniques available to remove dangerous organic pollutants. Among these techniques, the semi-conducting photocatalysis method is environmentally friendly, and can entirely eliminate the organic pollutants rapidly and cheaply. This technique has been suggested as one of the most impressive methods available to remove organic pollutants [1–5]. In the photocatalytic process, to optimize the use of visible light, ultraviolet active components can be composed with visible active components [6]. The conducting polymers have recently been received great attention in a variety of fields because of their π-conjugated chains, environmental stability, and * Bahram Bahramian [email protected] 1
Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran
controllable chemical and electrochemical properties, lightweight and easy processability [7–9]. Polyaniline (PANI) is one of the most potential conducting polymers and promising materials due to its high electrical conductivity, charge transport mechanism, environmental stability and low synthesis cost [10–12]. PANI nanocomposites consisting of both organic and inorganic moieties have been attracting much attention [13–17]. Among inorgan
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