Macroporous polypyrrole-TiO2 composites with improved photoactivity and electrochemical sensitivity

Li, Xiangcun; Sun, Jiasi; He, Gaohong; Jiang, Guanglan; Tan, Yi; Xue, Bing

doi:10.1016/j.jcis.2013.08.052

Cited by 26 publications

(41 citation statements)

References 46 publications

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“…Route 2 (Figure 1 (b)): TiO 2 and acid are dispersed into an aqueous solution, followed by the addition of Py, and the oxidant agent that also starts the polymerization reaction. 28,34,35,40,41…”

Section: Synthesis Of the Ppy/tio2 Compositesmentioning

confidence: 99%

“…SEM images of (a) pure PPy and (b) PPy/TiO 2 composite; 32 (c) macroporous TiO 2 and (d) PPy/macroporous TiO 2 composite; 34 (e) TiO 2 nanofibers and (f) TiO 2 /Ag-AgCl@PPy composite. 65 “Reprinted from Sangareswari and Sundaram , 32 Copyright © 2015 at Springer Nature Switzerland AG, distributed under the terms of the Creative Commons Attribution License (open access).…”

Section: Properties Of Ppy/tio2 Compositesmentioning

confidence: 99%

“…Thus, the conductive polymer acts on the composite as a photosensitizer improving the efficiency of charge separation at the stable organic-inorganic interface. 34…”

Section: Photocatalytic Activitymentioning

confidence: 99%

“…Effect of different scavengers: (a) Photocatalytic degradation of methylene blue (10 mg/L) over macroporous PPy /TiO 2 composite (150 mg/L) under simulated sunlight using 1.0 mM of EDTA (disodium ethylenediamine tetraacetate) and TBA (tert-butyl alcohol) as scavengers of holes (h + ) and hydroxyl radicals (•OH), respectively; 34 and (b) Photoconversion of 4-chlorophenol (10 mg /L) with PPy/TiO 2 (500 mg/L) under simulated sunlight using 0.1 mM of EDTA, BQ (benzoquinone) and IPA (isopropyl alcohol) as scavengers of holes, superoxide radials (•O 2 - ) and hydroxyl radicals (•OH), respectively. 39 …”

Section: Photocatalytic Activitymentioning

confidence: 99%

See 3 more Smart Citations

Synthesis, characterization, and application of polypyrrole/TiO₂ composites in photocatalytic processes: A review

Amorim

Steffen

et al. 2020

Polymers and Polymer Composites

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Hybrid materials composed of semiconductor oxide metals and conducting polymers have been highlighted as a new class of materials, with superior properties compared to their pure constituents. Among the studied composites to photocatalytic applications, the hybrids of titanium dioxide (TiO2) and polypyrrole (PPy) are promising due to several advantages over the pure TiO2 nanoparticles. The PPy/TiO2 composite has been effectively synthetized by chemical polymerization methods as in situ polymerization, photopolymerization, electrochemical polymerization, and molecular imprinting polymerization (MIP). All the cited methods appear to be effective in reducing the band gap energy, which suggests an increase in the formation of photoexcited electron-hole pairs and, consequently, an improvement of the light absorption in the visible region (400–700 nm). In addition, the doping of PPy/TiO2 with noble metals improves the separation of charges in the semiconductor particle, inhibiting the recombination of photogenerated electron-hole pairs. All advantages are evidenced by the characterization results of SEM, TEM, HRTEM, UV-vis DRS, FTIR, XRD, PL, TGA and electrical properties. Finally, results from literature present that PPy/TiO2 composites have better photocatalytic activity than the pure TiO2, being an alternative photocatalyst promising for visible light applications. Thus, this work presents a review of the synthesis, characterization, and application of PPy/TiO2 composites in the photocatalytic processes.

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Section: Synthesis Of the Ppy/tio2 Compositesmentioning

confidence: 99%

Section: Properties Of Ppy/tio2 Compositesmentioning

confidence: 99%

“…Thus, the conductive polymer acts on the composite as a photosensitizer improving the efficiency of charge separation at the stable organic-inorganic interface. 34…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Section: Photocatalytic Activitymentioning

confidence: 99%

See 2 more Smart Citations

Synthesis, characterization, and application of polypyrrole/TiO₂ composites in photocatalytic processes: A review

Amorim

Steffen

et al. 2020

Polymers and Polymer Composites

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show abstract

“…Literature survey shows that the conducting polymer composites offer various advantageous properties in the use of EMI shielding applications. PPY is a nitrogen based cyclic conducting polymer which offers good conductivity, environmental stability, and ease of synthesis [5,6]. However, conducting polymers lack in mechanical strength, it restricts their fabrication as an EMI shield for commercial applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electromagnetic shielding behaviour of multilayer graphene anchored luminescent TiO2 in PPY matrix

Gupta

Varshney²,

Goyal

et al. 2015

Materials Letters

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Synthesis and characterization of polypyrrole and its application for solar cell

et al. 2017

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Macroporous polypyrrole-TiO2 composites with improved photoactivity and electrochemical sensitivity

Cited by 26 publications

References 46 publications

Synthesis, characterization, and application of polypyrrole/TiO₂ composites in photocatalytic processes: A review

Synthesis, characterization, and application of polypyrrole/TiO₂ composites in photocatalytic processes: A review

Enhanced electromagnetic shielding behaviour of multilayer graphene anchored luminescent TiO2 in PPY matrix

Synthesis and characterization of polypyrrole and its application for solar cell

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Macroporous polypyrrole-TiO2 composites with improved photoactivity and electrochemical sensitivity

Cited by 26 publications

References 46 publications

Synthesis, characterization, and application of polypyrrole/TiO2 composites in photocatalytic processes: A review

Synthesis, characterization, and application of polypyrrole/TiO2 composites in photocatalytic processes: A review

Enhanced electromagnetic shielding behaviour of multilayer graphene anchored luminescent TiO2 in PPY matrix

Synthesis and characterization of polypyrrole and its application for solar cell

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Synthesis, characterization, and application of polypyrrole/TiO₂ composites in photocatalytic processes: A review

Synthesis, characterization, and application of polypyrrole/TiO₂ composites in photocatalytic processes: A review