Fabrication of PANI-TiO2/rGO hybrid composites for enhanced photocatalysis of pollutant removal and hydrogen production

Ma, Jing; Dai, Jianan; Duan, Yinli; Zhang, Jiajia; Li, Qiang; Xue, Juanqin

doi:10.1016/j.renene.2020.04.104

Cited by 96 publications

(37 citation statements)

References 64 publications

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“…Many researchers have examined the properties of CPA using appropriate materials and different synthetic processes 8 . PANI based nanocomposite materials have been utilized as an efficient sorbent for the photocatalytic degradation of different types of organic pollutants as reported in previously in the literature 9 – 13 . Cross-linking may be suitable for developing electrical and electrochemical properties of the conductive polymers.…”

Section: Introductionmentioning

confidence: 99%

Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

Katowah

Saleh

Alqarni

et al. 2021

Sci Rep

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A unique network core–shell hybrid design-based cross-linked polyaniline (CPA), which was coated with CuO nanoparticles (NPs) and decorated with nitrogen-doped SWCNT/GO/cellulose N-SWCNTS-GO-CE, has been fabricated using the oxidative polymerization technique. This hybrid nanocomposite shows excellent photocatalytic degradation and an acceptable adsorption capability for Methyl Orange (MO) dye in aqueous solutions with a very slight effect for the N-SWCNTS-GO-CE CuO component. The prepared nanocomposites were used for the removal of a carcinogenic and noxious dye, Methyl Orange, from aqueous samples under various adsorption conditions. Approximately 100% degradation of 10 mg/L of Methylene orange dye was observed within 100 min at pH 6.0 using 50 mg/L CPA/N-SWCNTS-GO-CE/CuO nanocomposite under UV radiation. Additionally, significant factors were investigated on the degradation process including the contact time, MO initial concentration (Ci), solution pH, and dosage of the CuO nanocomposite. All investigated experiments were performed under UV radiation, which provided significant data for the MO degradation process. Furthermore, the recovery of the nanocomposite was studied based on the photocatalytic process efficiency. The obtained data provide the high opportunity of reusing CPA/N-SWCNTS-GO-CE/CuO nanocomposite for numerous photocatalytic processes. The CPA/N-SWCNTS-GO-CE/CuO nanocomposite was prepared via chemical oxidative copolymerization of polyaniline (PANI) with p-phenylenediamine (PPDA) and triphenylamine (TPA) in the presence of N-SWCNTS-GO-CE and CuO NPs. The morphology, structure and thermal properties of the CPA/N-SWCNTS-GO-CE/CuO nanocomposite were investigated using various techniques, including FTIR, XRD, RAMAN, SEM, MAP, EDX, TEM, TGA and DTG. Therefore, CPA/N-SWCNTS-GO-CE/CuO nanocomposite can be effectively used as a convenient and reusable adsorbent to remove hazardous dye from wastewater.

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Section: Introductionmentioning

confidence: 99%

Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

Katowah

Saleh

Alqarni

et al. 2021

Sci Rep

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“…C 1s core-shell spectrum of GO drop-casted film shows strong signals ascribed to graphitic carbon atoms (284.7 eV) and oxidized carbon species (C-O 286.9 eV, C=O 288.5 eV). [14] Upon electrochemical treatment, the peak associated with graphitic carbon atoms becomes prominent while the peaks ascertained to OFGs becomes weaker (see table 1). The most significant change in XPS spectra is observed in the concentration of C-O groups (epoxy) which is in good agreement with CV records.…”

Section: Morphological and Structural Behaviors Of Pani/rgo/spementioning

confidence: 99%

“…[13] As mentioned above (section 3.2.1), the existence of previously deposited rGO layer with high compactness might offer more nucleation sites, thus increased the disposition rate of PANi. [36] Last but not least, the adhesion of PANi with amino groups onto basal planes of graphitic flakes with abundant OFGs should be strengthened by cross-linking bonds [14,17] as well as π-π stacking interaction between these two materials.…”

Section: -mentioning

confidence: 99%

“…N 1s signals for PANi/rGO film can be deconvoluted to assign benzenoid amine -NH-(399.3 eV) and cationic radical N + (401.3 eV). [14,43,44] The first peak relevant to amine group is located at higher binding energy compared to neutral amine (at 399.5 eV), [37] indicating the occurence of partially charged nitrogen in electrodeposited polymer chains. The second peak is typical for PANi at doped state.…”

Section: Morphological and Structural Behaviors Of Pani/rgo/spementioning

confidence: 99%

“…The use of graphitic material as one supporting layer provides the solution to overcome insulating nature and structural shrinkage of PANi in dedoping states. [13,14] Moreover, the addition of soft PANi material make carbonaceous materials become less rigid and more biocompatible. For instance, the PANi ad-layer electrodeposited on graphitic electrodes has been shown to improve voltammetric signals during analysis of redox probes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Acetylcholinesterase sensor based on PANi/rGO film electrochemically grown on screen‐printed electrodes

Thanh

Nga²,

Lam

et al. 2021

Vietnam Journal of Chemistry

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In this work, the polyaniline/reduced graphene oxide (PANi/rGO) bilayer was directly electrodeposited on carbon screen‐printed electrodes (SPE). Some details in growth of PANi/rGO bilayer were revealed from cyclic voltammograms and X‐ray photoelectron spectra. The growth of stacked rGO film at high compactness on the electrode surface is mainly accompanied with reduction of epoxy functional groups at basal planes of graphitic flakes. The as‐grown rGO layer with abundent hydroxyl functional groups at basal planes is preferable to attract intrinsic fibrillar‐like PANi polymer chains in protonated aqueous media. The as‐prepared PANi/rGO hybrid bilayer has shown good conductivity, high porosity, good adhesion to biomolecules, and fast electron transfer rate (increased by 3.8 times). Herein, PANi/rGO film has been further utilized to develop disposable acetylcholinesterase sensors able to detect acetylthiocholine (ATCh) with apparent Michaelis ‐ Menten constant of 0.728 mM. These sensors provide a very promising technical solution for in‐situ monitoring acetylthiocholine level in patients with neuro‐diseases and determination of neuro‐toxins such as sarin and pesticides.

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Photocatalytic Decontamination of Organic Pollutants from Water

Kausor¹,

Chakrabortty²

2022

Photocatalysts and Electrocatalysts in Water Remediation

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Fabrication of PANI-TiO2/rGO hybrid composites for enhanced photocatalysis of pollutant removal and hydrogen production

Cited by 96 publications

References 64 publications

Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

Acetylcholinesterase sensor based on PANi/rGO film electrochemically grown on screen‐printed electrodes

Photocatalytic Decontamination of Organic Pollutants from Water

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