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Preparation of PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2 nanocomposites and their application in catalytic degradation of methylene blue.

Zhang L, Jamal R, Zhao Q, Wang M, Abdiryim T - Nanoscale Res Lett (2015)

Bottom Line: The results displayed that nanocomposites were successfully synthesized, and PEDOT/GO had higher conjugation length and doped degree than pure PEDOT.However, the introduction of MnO2 could lead to the reduction of conjugation length and doped degree in PEDOT/MnO2 and PEDOT/GO/MnO2 nanocomposites.The field emission scanning electron microscope (FESEM) analysis also showed that both MnO2 and GO had some effect on the morphology of nanocomposites.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Oil and Gas Fine Chemicals, Educational Ministry of China, College of Chemistry and Chemical Engineering, Xinjiang University, Shengli Road No.14, Tianshan District, Urumqi, Xinjiang 830046 People's Republic of China ; Key Laboratory of Functional Polymers, Xinjiang University, Shengli Road No.14, Tianshan District, Urumqi, Xinjiang 830046 People's Republic of China.

ABSTRACT
The nanocomposite materials of poly(3,4-ethylenedioxythiophene)/graphene oxide (PEDOT/GO), poly(3,4-ethylenedioxythiophene)/MnO2 (PEDOT/MnO2), and poly(3, 4-ethylenedioxythiophene)/graphene oxide/MnO2 (PEDOT/GO/MnO2) were successfully prepared by facile and template-free solution method. The structure and morphology of nanonanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible absorption spectra (UV-vis), field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDX), respectively. The catalytic activities of nanocomposites were investigated through the degradation processes of methylene blue (MB) solution under dark, UV light, and nature sunlight irradiation, respectively. The results displayed that nanocomposites were successfully synthesized, and PEDOT/GO had higher conjugation length and doped degree than pure PEDOT. However, the introduction of MnO2 could lead to the reduction of conjugation length and doped degree in PEDOT/MnO2 and PEDOT/GO/MnO2 nanocomposites. The field emission scanning electron microscope (FESEM) analysis also showed that both MnO2 and GO had some effect on the morphology of nanocomposites. The catalytic activities of pure PEDOT and nanocomposites were in the order of PEDOT/GO/MnO2 > PEDOT/MnO2 > PEDOT/GO > pure PEDOT. Besides, the catalytic results also showed that the highest degradation efficiency of MB after 7 h occurred in the PEDOT/GO/MnO2 composite in three irradiation.

No MeSH data available.


FTIR spectra of pure PEDOT, PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2nanocomposites.
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Fig1: FTIR spectra of pure PEDOT, PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2nanocomposites.

Mentions: Figure 1 shows the FTIR spectra of PEDOT, PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2 nanocomposites. As shown in Figure 1, the characteristic absorption bands of the PEDOT and PEDOT/GO are at 1,510, 1,316, 1,176, 1,140, 1,044, 921, 831, and 704 cm−1, respectively. The bands of 1,510, 1,316, 1,176, 1,140, and 1,044 cm−1 are assigned to the aromatic C = C stretching in benzene ring of polythiophene and the C-O-C bond stretching in ethylenedioxy group, respectively [20]. The presence of C-S-C bond in the thiophene ring is indicated by the bands at 921, 831, and 704 cm−1 [21]. Moreover, several absorption bands around 3,395 and 1,630 cm−1 are observed in PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2 nanocomposites, which can be attributed to stretching and bending vibrations of the -OH group of crystal and adsorbed water molecules, respectively [22]. In addition, the band of Mn − O and Mn − O − Mn vibrations at 510 cm−1 is observed in the case of PEDOT/MnO2 and PEDOT/GO/MnO2 nanocomposites, which supports that the presence of MnO2 in nanocomposites [23].Figure 1


Preparation of PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2 nanocomposites and their application in catalytic degradation of methylene blue.

Zhang L, Jamal R, Zhao Q, Wang M, Abdiryim T - Nanoscale Res Lett (2015)

FTIR spectra of pure PEDOT, PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2nanocomposites.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385305&req=5

Fig1: FTIR spectra of pure PEDOT, PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2nanocomposites.
Mentions: Figure 1 shows the FTIR spectra of PEDOT, PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2 nanocomposites. As shown in Figure 1, the characteristic absorption bands of the PEDOT and PEDOT/GO are at 1,510, 1,316, 1,176, 1,140, 1,044, 921, 831, and 704 cm−1, respectively. The bands of 1,510, 1,316, 1,176, 1,140, and 1,044 cm−1 are assigned to the aromatic C = C stretching in benzene ring of polythiophene and the C-O-C bond stretching in ethylenedioxy group, respectively [20]. The presence of C-S-C bond in the thiophene ring is indicated by the bands at 921, 831, and 704 cm−1 [21]. Moreover, several absorption bands around 3,395 and 1,630 cm−1 are observed in PEDOT/GO, PEDOT/MnO2, and PEDOT/GO/MnO2 nanocomposites, which can be attributed to stretching and bending vibrations of the -OH group of crystal and adsorbed water molecules, respectively [22]. In addition, the band of Mn − O and Mn − O − Mn vibrations at 510 cm−1 is observed in the case of PEDOT/MnO2 and PEDOT/GO/MnO2 nanocomposites, which supports that the presence of MnO2 in nanocomposites [23].Figure 1

Bottom Line: The results displayed that nanocomposites were successfully synthesized, and PEDOT/GO had higher conjugation length and doped degree than pure PEDOT.However, the introduction of MnO2 could lead to the reduction of conjugation length and doped degree in PEDOT/MnO2 and PEDOT/GO/MnO2 nanocomposites.The field emission scanning electron microscope (FESEM) analysis also showed that both MnO2 and GO had some effect on the morphology of nanocomposites.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Oil and Gas Fine Chemicals, Educational Ministry of China, College of Chemistry and Chemical Engineering, Xinjiang University, Shengli Road No.14, Tianshan District, Urumqi, Xinjiang 830046 People's Republic of China ; Key Laboratory of Functional Polymers, Xinjiang University, Shengli Road No.14, Tianshan District, Urumqi, Xinjiang 830046 People's Republic of China.

ABSTRACT
The nanocomposite materials of poly(3,4-ethylenedioxythiophene)/graphene oxide (PEDOT/GO), poly(3,4-ethylenedioxythiophene)/MnO2 (PEDOT/MnO2), and poly(3, 4-ethylenedioxythiophene)/graphene oxide/MnO2 (PEDOT/GO/MnO2) were successfully prepared by facile and template-free solution method. The structure and morphology of nanonanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible absorption spectra (UV-vis), field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDX), respectively. The catalytic activities of nanocomposites were investigated through the degradation processes of methylene blue (MB) solution under dark, UV light, and nature sunlight irradiation, respectively. The results displayed that nanocomposites were successfully synthesized, and PEDOT/GO had higher conjugation length and doped degree than pure PEDOT. However, the introduction of MnO2 could lead to the reduction of conjugation length and doped degree in PEDOT/MnO2 and PEDOT/GO/MnO2 nanocomposites. The field emission scanning electron microscope (FESEM) analysis also showed that both MnO2 and GO had some effect on the morphology of nanocomposites. The catalytic activities of pure PEDOT and nanocomposites were in the order of PEDOT/GO/MnO2 > PEDOT/MnO2 > PEDOT/GO > pure PEDOT. Besides, the catalytic results also showed that the highest degradation efficiency of MB after 7 h occurred in the PEDOT/GO/MnO2 composite in three irradiation.

No MeSH data available.