A novel approach for the synthesis of monodispere polypyrrole nanospheres

Ning, Xutao; Zhong, Wenbin; Li, Shichao; Long, Wei

doi:10.1016/j.matlet.2013.12.014

Cited by 13 publications

(13 citation statements)

References 18 publications

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“…For instance, the PPy microtubules have been synthesized using the template-free method in the presence of bnaphthalene sulfonic acid as the dopant (Liu and Wan 2001). The PPy nanospheres have been obtained by employing F108, a PEO-PPO-PEO triblock surfactant, as a soft template (Ning et al 2014). Also, the PPy hollow spheres have been prepared by adsorbing and polymerizing pyrrole monomers on the surface of SiO 2 spheres to form PPy shell first and then remove the SiO 2 core (Liu et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Wang

Cao

2015

J Nanopart Res

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The size-controllable polypyrrole (PPy) nanospheres are successfully synthesized by oxidative polymerization of pyrrole using N-methylene phosphonic chitosan (NMPC) as a structure-directing agent. By simply changing the amount of NMPC, the size of the PPy nanospheres can be adjusted from 190 to 50 nm in diameter. The spectrometric results suggest that the electrostatic interactions of phosphate groups in NMPC molecule with pyrrole ring might be a driving force for formation of the uniform and sizecontrollable PPy nanospheres. The PPy nanospheres with the diameter of 100 nm exhibit the largest capacity and a good cycling stability as electrode materials of supercapacitors. The as-prepared PPy nanospheres also can be combined with carbon dots to form composite nanospheres presenting enhanced fluorescence intensity, which show potential application in fluorescence detection.

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Section: Introductionmentioning

confidence: 99%

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Wang

Cao

2015

J Nanopart Res

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“…XRD patterns showed that the above samples were amorphous structures with wider diffraction peaks at 20-30 • (Figure S6). The negligible difference in the diffraction peaks of PPy/HMSNs and HMSNs indicated that PPy did not change the structure of HMSNs [24].…”

Section: Resultsmentioning

confidence: 97%

Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles

Gao

Liu

et al. 2020

Nanomaterials

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The removal of Cr(VI) in wastewater plays an important role in human health and environment. In this work, polypyrrole/hollow mesoporous silica particle (PPy/HMSNs) adsorbents have been newly synthesized by in-situ polymerization, which prevent the aggregation of pyrrole in the process of polymerization and exhibit highly selective and powerful adsorption ability for Cr(VI). The adsorption process was in good agreement with the quasi-second-order kinetic model and the Langmuir isotherm model. And the maximum adsorption capacity of Cr(VI) was 322 mg/g at 25 °C. Moreover, the removal rate of Cr(VI) by PPy/HMSNs was ~100% in a number of binary systems, such as Cl−/Cr(VI), NO3−/Cr(VI), SO42−/Cr(VI), Zn2+/Cr(VI), Fe3+/Cr(VI), Sn4+/Cr(VI), and Cu2+/Cr(VI). Thus, the PPy/HMSNs adsorbents have great potential for the removal of Cr(VI) in wastewater.

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“…From the X-ray diffraction pattern (Fig.1A), it is observed that there is a wide diffraction peak at about 23.4º corresponding to a d-space of 0.38 nm, which is the characteristic of the doped PPy product. [37][38][39] The SEM image (Fig.1B) respectively, due to the deformation caused by interaction between Se and the PPy. 40 In addition, it is noticed that some peaks of pure PPy were enhanced or appeared due to the formation of Se/PPy nanocomposite.…”

Section: Characterization Resultsmentioning

confidence: 99%

“…37 For PPy product, when heating from 200℃ to about 570℃, the mass fraction decreased gradually which was caused by the dissociation of the SO 4 2absorbed on PPy. During the temperature increasing to 200℃,the weight loss of products resulted from the volatilization of absorbed water.…”

Section: Physical Chemistry Chemical Physics Accepted Manuscriptmentioning

confidence: 99%

Self-catalytic polymerization of a water-soluble selenium/polypyrrole nanocomposite and its nonlinear optical properties

Zhang

et al. 2015

Phys. Chem. Chem. Phys.

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A facile one-step method for the synthesis of a water-soluble selenium/polypyrrole (Se/PPy) nanocomposite was developed. In the aqueous synthesis process, the pyrrole acted as a reductant for the reduction of H2SeO3, and then the elemental Se formed in situ acted as a catalyst for the polymerization of pyrrole. The characterization results show that the as-obtained composite (Se/PPy) is a spherical (Φ80 nm) product that is made up of amorphous Se particles coated by PPy layers. The formation mechanism and influence factors of the products were discussed, based on a series of experiments. It is proposed that remainder H2SeO3 adsorbed on the PPy chains increased the water-solubility and conductivity of the Se/PPy nanocomposite. Significantly, relying on the synergistic effect of photo-conductive Se nanoparticles and electric-conductive PPy molecules, the Se/PPy nanocomposite possesses a large two-photon absorption (2PA) cross-section and good optical limiting properties, which were demonstrated by the Z-scan technique using a femtosecond laser. We believe that this work should be an interesting strategy for developing polymer composites with excellent optoelectrical properties.

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A novel approach for the synthesis of monodispere polypyrrole nanospheres

Cited by 13 publications

References 18 publications

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles

Self-catalytic polymerization of a water-soluble selenium/polypyrrole nanocomposite and its nonlinear optical properties

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