Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles
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Radoičić, Marija B.Šaponjić, Zoran
Janković, Ivana A.
Ćirić-Marjanović, Gordana N.
Ahrenkiel, Scott Phillip
Čomor, Mirjana
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Polyaniline/TiO2 nanocomposite powders were successfully synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in water without the addition of acid, in the presence of colloidal TiO2 nanoparticles (d similar to 4.5 nm). The morphological, structural, and optical properties of the synthesized nanocomposites prepared at initial TiO2/aniline mole ratios of 50,100, and 150 were studied using transmission electron microscopy, X-ray powder diffraction, Raman and UV-vis spectroscopies. The presence of emeraldine salt and the base form of linear polyaniline (PANI) chains as well as the presence of phenazine units, branched PANI chains, oligomeric structures and short PANI chains in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The anatase crystal structure of TiO2 nanopartides in all the nanocomposites was confirmed by X-ray powder diffraction measurements and by Raman spectroscopy. The photocatalytic activities of PANI/TiO2 nanocomposites were e...valuated using the photocatalytic degradation of Rhodamine B and Methylene blue as model compounds and compared with the activity of bare colloidal TiO2 nanoparticles. Enhanced degradation efficiencies in the dyes used were observed. A possible explanation for the PANI/TiO2 photocatalytic activities was suggested, taking into account the influence of the molecular structures of the used dyes and PANI in PANI/TiO2 nanocomposites. (C) 2013 Elsevier B.V. All rights reserved.
Keywords:
Photocatalysis / TiO2 / PolyanilineSource:
Applied Catalysis. B: Environmental, 2013, 136, 133-139Funding / projects:
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites (RS-MESTD-Basic Research (BR or ON)-172056)
- Electroconducting and redox-active polymers and oligomers: synthesis, structure, properties and applications (RS-MESTD-Basic Research (BR or ON)-172043)
DOI: 10.1016/j.apcatb.2013.01.007
ISSN: 0926-3373
WoS: 000317539400016
Scopus: 2-s2.0-84874528795
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VinčaTY - JOUR AU - Radoičić, Marija B. AU - Šaponjić, Zoran AU - Janković, Ivana A. AU - Ćirić-Marjanović, Gordana N. AU - Ahrenkiel, Scott Phillip AU - Čomor, Mirjana PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5418 AB - Polyaniline/TiO2 nanocomposite powders were successfully synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in water without the addition of acid, in the presence of colloidal TiO2 nanoparticles (d similar to 4.5 nm). The morphological, structural, and optical properties of the synthesized nanocomposites prepared at initial TiO2/aniline mole ratios of 50,100, and 150 were studied using transmission electron microscopy, X-ray powder diffraction, Raman and UV-vis spectroscopies. The presence of emeraldine salt and the base form of linear polyaniline (PANI) chains as well as the presence of phenazine units, branched PANI chains, oligomeric structures and short PANI chains in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The anatase crystal structure of TiO2 nanopartides in all the nanocomposites was confirmed by X-ray powder diffraction measurements and by Raman spectroscopy. The photocatalytic activities of PANI/TiO2 nanocomposites were evaluated using the photocatalytic degradation of Rhodamine B and Methylene blue as model compounds and compared with the activity of bare colloidal TiO2 nanoparticles. Enhanced degradation efficiencies in the dyes used were observed. A possible explanation for the PANI/TiO2 photocatalytic activities was suggested, taking into account the influence of the molecular structures of the used dyes and PANI in PANI/TiO2 nanocomposites. (C) 2013 Elsevier B.V. All rights reserved. T2 - Applied Catalysis. B: Environmental T1 - Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles VL - 136 SP - 133 EP - 139 DO - 10.1016/j.apcatb.2013.01.007 ER -
@article{ author = "Radoičić, Marija B. and Šaponjić, Zoran and Janković, Ivana A. and Ćirić-Marjanović, Gordana N. and Ahrenkiel, Scott Phillip and Čomor, Mirjana", year = "2013", abstract = "Polyaniline/TiO2 nanocomposite powders were successfully synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in water without the addition of acid, in the presence of colloidal TiO2 nanoparticles (d similar to 4.5 nm). The morphological, structural, and optical properties of the synthesized nanocomposites prepared at initial TiO2/aniline mole ratios of 50,100, and 150 were studied using transmission electron microscopy, X-ray powder diffraction, Raman and UV-vis spectroscopies. The presence of emeraldine salt and the base form of linear polyaniline (PANI) chains as well as the presence of phenazine units, branched PANI chains, oligomeric structures and short PANI chains in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The anatase crystal structure of TiO2 nanopartides in all the nanocomposites was confirmed by X-ray powder diffraction measurements and by Raman spectroscopy. The photocatalytic activities of PANI/TiO2 nanocomposites were evaluated using the photocatalytic degradation of Rhodamine B and Methylene blue as model compounds and compared with the activity of bare colloidal TiO2 nanoparticles. Enhanced degradation efficiencies in the dyes used were observed. A possible explanation for the PANI/TiO2 photocatalytic activities was suggested, taking into account the influence of the molecular structures of the used dyes and PANI in PANI/TiO2 nanocomposites. (C) 2013 Elsevier B.V. All rights reserved.", journal = "Applied Catalysis. B: Environmental", title = "Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles", volume = "136", pages = "133-139", doi = "10.1016/j.apcatb.2013.01.007" }
Radoičić, M. B., Šaponjić, Z., Janković, I. A., Ćirić-Marjanović, G. N., Ahrenkiel, S. P.,& Čomor, M.. (2013). Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles. in Applied Catalysis. B: Environmental, 136, 133-139. https://doi.org/10.1016/j.apcatb.2013.01.007
Radoičić MB, Šaponjić Z, Janković IA, Ćirić-Marjanović GN, Ahrenkiel SP, Čomor M. Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles. in Applied Catalysis. B: Environmental. 2013;136:133-139. doi:10.1016/j.apcatb.2013.01.007 .
Radoičić, Marija B., Šaponjić, Zoran, Janković, Ivana A., Ćirić-Marjanović, Gordana N., Ahrenkiel, Scott Phillip, Čomor, Mirjana, "Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles" in Applied Catalysis. B: Environmental, 136 (2013):133-139, https://doi.org/10.1016/j.apcatb.2013.01.007 . .