Superior photocatalytic properties of carbonized PANI/TiO2 nanocomposites
Samo za registrovane korisnike
2017
Autori
Radoičić, Marija B.Ćirić-Marjanović, Gordana N.
Spasojević, Vuk D.
Ahrenkiel, Scott Phillip
Mitrić, Miodrag
Novaković, Tatjana
Šaponjić, Zoran
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A simple bottom-up method for the preparation of novel and very efficient photocatalytic nanocomposite system based on carbonized form of polyaniline (PANI) and colloidal TiO2 nanocrystals has been developed. The carbonized PANI/TiO2 nanocomposites were synthesized in a two-step procedure. Firstly, non-carbonized PANI/TiO2 nanocomposites were synthesized by the chemical oxidative polymerization of aniline (ANI) with ammonium peroxydisulfate, in the presence of colloidal TiO2 nanoparticles (TiO2 NPs) (d 4.5 nm). Initial [TiO2 NANI] mole ratios were 20, 50, and 80. In the second step, following the polymerization process, the carbonization of PANI/TiO2 nanocomposites was performed by thermal treatment in an inert atmosphere at 650 degrees C. The morphological and structural properties of the carbonized nanocomposites were studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and Raman spectroscopy. The accomplishment of c...omplete carbonization of PANI in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The appearance of anatase and rutile crystal forms in TiO2 NPs upon carbonization, with mass ratio depending on the initial molar ratio of ANI and TiO2 NPs was revealed by XRD measurements, TEM, SEM and Raman spectroscopy. The photocatalytic activities of carbonized PANI/TiO2 nanocomposites were evaluated following the photocatalytic degradation processes of Rhodamine B and Methylene blue. Carbonized PANI/TiO2 nanocomposites showed higher photocatalytic efficacy compared to bare TiO2 NPs and non-carbonized PANI/TiO2 nanocomposites. The porosity and surface structure of carbonized PANI/TiO2 nanocomposites, as well as crystalline structure of TiO2, affect photocatalytic activity of nanocomposites. (C) 2017 Elsevier B.V. All rights reserved.
Ključne reči:
Photocatalysis / TiO2 / Carbonized polyanilineIzvor:
Applied Catalysis. B: Environmental, 2017, 213, 155-166Finansiranje / projekti:
- Materijali redukovane dimenzionalnosti za efikasnu apsorpciju svetlosti i konverziju energije (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Uticaj veličine, oblika i strukture nanočestica na njihova svojstva i svojstva nanokompozita (RS-MESTD-Basic Research (BR or ON)-172056)
- Elektroprovodni i redoks-aktivni polimeri i oligomeri: sinteza, struktura, svojstva i primena (RS-MESTD-Basic Research (BR or ON)-172043)
DOI: 10.1016/j.apcatb.2017.05.023
ISSN: 0926-3373; 1873-3883
WoS: 000402633300016
Scopus: 2-s2.0-85018897251
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Radoičić, Marija B. AU - Ćirić-Marjanović, Gordana N. AU - Spasojević, Vuk D. AU - Ahrenkiel, Scott Phillip AU - Mitrić, Miodrag AU - Novaković, Tatjana AU - Šaponjić, Zoran PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1597 AB - A simple bottom-up method for the preparation of novel and very efficient photocatalytic nanocomposite system based on carbonized form of polyaniline (PANI) and colloidal TiO2 nanocrystals has been developed. The carbonized PANI/TiO2 nanocomposites were synthesized in a two-step procedure. Firstly, non-carbonized PANI/TiO2 nanocomposites were synthesized by the chemical oxidative polymerization of aniline (ANI) with ammonium peroxydisulfate, in the presence of colloidal TiO2 nanoparticles (TiO2 NPs) (d 4.5 nm). Initial [TiO2 NANI] mole ratios were 20, 50, and 80. In the second step, following the polymerization process, the carbonization of PANI/TiO2 nanocomposites was performed by thermal treatment in an inert atmosphere at 650 degrees C. The morphological and structural properties of the carbonized nanocomposites were studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and Raman spectroscopy. The accomplishment of complete carbonization of PANI in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The appearance of anatase and rutile crystal forms in TiO2 NPs upon carbonization, with mass ratio depending on the initial molar ratio of ANI and TiO2 NPs was revealed by XRD measurements, TEM, SEM and Raman spectroscopy. The photocatalytic activities of carbonized PANI/TiO2 nanocomposites were evaluated following the photocatalytic degradation processes of Rhodamine B and Methylene blue. Carbonized PANI/TiO2 nanocomposites showed higher photocatalytic efficacy compared to bare TiO2 NPs and non-carbonized PANI/TiO2 nanocomposites. The porosity and surface structure of carbonized PANI/TiO2 nanocomposites, as well as crystalline structure of TiO2, affect photocatalytic activity of nanocomposites. (C) 2017 Elsevier B.V. All rights reserved. T2 - Applied Catalysis. B: Environmental T1 - Superior photocatalytic properties of carbonized PANI/TiO2 nanocomposites VL - 213 SP - 155 EP - 166 DO - 10.1016/j.apcatb.2017.05.023 ER -
@article{ author = "Radoičić, Marija B. and Ćirić-Marjanović, Gordana N. and Spasojević, Vuk D. and Ahrenkiel, Scott Phillip and Mitrić, Miodrag and Novaković, Tatjana and Šaponjić, Zoran", year = "2017", abstract = "A simple bottom-up method for the preparation of novel and very efficient photocatalytic nanocomposite system based on carbonized form of polyaniline (PANI) and colloidal TiO2 nanocrystals has been developed. The carbonized PANI/TiO2 nanocomposites were synthesized in a two-step procedure. Firstly, non-carbonized PANI/TiO2 nanocomposites were synthesized by the chemical oxidative polymerization of aniline (ANI) with ammonium peroxydisulfate, in the presence of colloidal TiO2 nanoparticles (TiO2 NPs) (d 4.5 nm). Initial [TiO2 NANI] mole ratios were 20, 50, and 80. In the second step, following the polymerization process, the carbonization of PANI/TiO2 nanocomposites was performed by thermal treatment in an inert atmosphere at 650 degrees C. The morphological and structural properties of the carbonized nanocomposites were studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and Raman spectroscopy. The accomplishment of complete carbonization of PANI in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The appearance of anatase and rutile crystal forms in TiO2 NPs upon carbonization, with mass ratio depending on the initial molar ratio of ANI and TiO2 NPs was revealed by XRD measurements, TEM, SEM and Raman spectroscopy. The photocatalytic activities of carbonized PANI/TiO2 nanocomposites were evaluated following the photocatalytic degradation processes of Rhodamine B and Methylene blue. Carbonized PANI/TiO2 nanocomposites showed higher photocatalytic efficacy compared to bare TiO2 NPs and non-carbonized PANI/TiO2 nanocomposites. The porosity and surface structure of carbonized PANI/TiO2 nanocomposites, as well as crystalline structure of TiO2, affect photocatalytic activity of nanocomposites. (C) 2017 Elsevier B.V. All rights reserved.", journal = "Applied Catalysis. B: Environmental", title = "Superior photocatalytic properties of carbonized PANI/TiO2 nanocomposites", volume = "213", pages = "155-166", doi = "10.1016/j.apcatb.2017.05.023" }
Radoičić, M. B., Ćirić-Marjanović, G. N., Spasojević, V. D., Ahrenkiel, S. P., Mitrić, M., Novaković, T.,& Šaponjić, Z.. (2017). Superior photocatalytic properties of carbonized PANI/TiO2 nanocomposites. in Applied Catalysis. B: Environmental, 213, 155-166. https://doi.org/10.1016/j.apcatb.2017.05.023
Radoičić MB, Ćirić-Marjanović GN, Spasojević VD, Ahrenkiel SP, Mitrić M, Novaković T, Šaponjić Z. Superior photocatalytic properties of carbonized PANI/TiO2 nanocomposites. in Applied Catalysis. B: Environmental. 2017;213:155-166. doi:10.1016/j.apcatb.2017.05.023 .
Radoičić, Marija B., Ćirić-Marjanović, Gordana N., Spasojević, Vuk D., Ahrenkiel, Scott Phillip, Mitrić, Miodrag, Novaković, Tatjana, Šaponjić, Zoran, "Superior photocatalytic properties of carbonized PANI/TiO2 nanocomposites" in Applied Catalysis. B: Environmental, 213 (2017):155-166, https://doi.org/10.1016/j.apcatb.2017.05.023 . .