Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies

Zia, Jannatun; Ajeer, Mohamed; Riaz, Ufana

doi:10.1016/j.jes.2018.11.021

Cited by 47 publications

(12 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, PPy, PANI, and PTP were also known to provide an outstanding pathway for the removal of organic compounds in water 6,9,10 . PPy has demonstrated the truth to be among the most efficient photocatalysts due to their easy synthesis and good thermal stability 12 . Furthermore, PPy is cost‐effective, non‐toxic, and has good environmental stability 11,13 .…”

Section: Introductionmentioning

confidence: 99%

“…6,9,10 PPy has demonstrated the truth to be among the most efficient photocatalysts due to their easy synthesis and good thermal stability. 12 Furthermore, PPy is cost-effective, nontoxic, and has good environmental stability. 11,13 Due to its extended π-conjugated electron system, PPy shows flexible and tunable properties such as being an effective electron transporter and holes acceptor.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High efficient degradation of organic dyes by polypyrrole‐multiwall carbon nanotubes nanocomposites

Pang

Arsad

Ahmadipour

et al. 2022

Polymers for Advanced Techs

View full text Add to dashboard Cite

Over the years, there has been an emphasis on the improvement of novel materials for photocatalytic processes for practical application in treating wastewater. In this sense, the ultrasonic-assisted in-situ chemical polymerization route was used to synthesize polypyrrole-multiwall carbon nanotubes (PPy-MWCNTs) nanocomposites. The transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet visible (UV-vis) analysis were employed to study the impact of MWCNTs on the properties of PPy. TEM showed that the PPy-MWCNTs nanocomposites consist of spherical PPy with 80 nm particle size, while the MWCNTs showed inner and outer diameters of 7 nm and 13 nm, respectively. XRD analysis showed that the crystallinity of the PPy increased with MWCNTs loading. The potential of PPy-MWCNTs nanocomposites as photocatalysts was evaluated via the photodegradation of rhodamine B (RhB) and methylene blue (MB) dyes. The photodegradation efficiency was found to have improved with increasing MWCNTs loading. Almost 99.36% and 78.30% of RhB and MB dye degradation were achieved after 35 min of reaction for the highest loading of MWCNTs. The remarkable nanocomposite photocatalytic activity was attributed to the optical bandgap energy (E g ) reduction with the addition of MWCNTs. These results foreshadow the potential use of the PPy-MWCNTs nanocomposites for water purification.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High efficient degradation of organic dyes by polypyrrole‐multiwall carbon nanotubes nanocomposites

Pang

Arsad

Ahmadipour

et al. 2022

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…37 The Tauc plot derivative maxima (Figure 3) were found at 2.29 and 2.78 eV, each of which corresponds to the band gap for Cd(OH) 2 and δ-MnO 2 , respectively. 37,38 To investigate the type of transitions, we plotted (αhν) 1/n vs energy, with "n" representing the nature of the transition. 39 The closest approximate value found near the earlier obtained values of 2.29 and 2.78 eV was found for the indirect allowed transition, indicating that the heterostructure materials have an indirect band gap.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Nanostructured δ-MnO₂/Cd(OH)₂ Heterojunction Constructed under Ambient Conditions as a Sustainable Cathode for Photocatalytic Hydrogen Production

Natarajan

Saraf

Gupta

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this study, we report the deposition of a thin layer of Cd(OH)2 over δ-MnO2 deposited on a fluorine-doped tin oxide (FTO) glass substrate, thereby forming a heterojunction with synergistic effects. Electrodes fabricated by a room-temperature, facile, and cost-effective chemical bath deposition method display enhanced photoactivity when used as cathodes for the hydrogen evolution reaction (HER) in a photoelectrochemical cell, with an observed photocurrent of 0.3 mA/cm2 at 0 V vs reversible hydrogen electrode (RHE). The electrodes also showcase a dark electrocatalytic current of 2.9 mA/cm2 without illumination. The δ-MnO2/Cd(OH)2 nano-heterostructure is analyzed thoroughly via various physicochemical, optical and electrochemical methods to understand the phenomena involved in the conduction characteristics. The enhanced photoconductivity is attributed to effective charge separation and transport by the presence of synergistic materials with optimal band gap energies. These results show promise for the use of birnessite-based materials as sustainable electro- or photocatalysts for the hydrogen evolution reaction.

show abstract

“…The authors predicated the degradation of bisphenol A using DFT calculations to compute the Fukui index which showed the radical attacking sites in BPA (f°) and (f − ). 81 The authors computed the band gap values and oscillator strength of luminol in acidic, basic, and neutral media via DFT studies using the B3LYP/6-31G(d) basis set to compare with the experimental data. 82…”

Section: Computational Studies On Miscellaneous Conducting Polymersmentioning

confidence: 99%

Theoretical studies of conducting polymers: a mini review

2022

Self Cite

View full text Add to dashboard Cite

show abstract

Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies

Cited by 47 publications

References 45 publications

High efficient degradation of organic dyes by polypyrrole‐multiwall carbon nanotubes nanocomposites

High efficient degradation of organic dyes by polypyrrole‐multiwall carbon nanotubes nanocomposites

Nanostructured δ-MnO₂/Cd(OH)₂ Heterojunction Constructed under Ambient Conditions as a Sustainable Cathode for Photocatalytic Hydrogen Production

Theoretical studies of conducting polymers: a mini review

Contact Info

Product

Resources

About

Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies

Cited by 47 publications

References 45 publications

High efficient degradation of organic dyes by polypyrrole‐multiwall carbon nanotubes nanocomposites

High efficient degradation of organic dyes by polypyrrole‐multiwall carbon nanotubes nanocomposites

Nanostructured δ-MnO2/Cd(OH)2 Heterojunction Constructed under Ambient Conditions as a Sustainable Cathode for Photocatalytic Hydrogen Production

Theoretical studies of conducting polymers: a mini review

Contact Info

Product

Resources

About

Nanostructured δ-MnO₂/Cd(OH)₂ Heterojunction Constructed under Ambient Conditions as a Sustainable Cathode for Photocatalytic Hydrogen Production