Enhanced photocatalytic performance of PANI-rGO-MnO2 ternary composite for degradation of organic contaminants under visible light

Park, Yuri; Numan, Arshid; Ponomarev, Nikolai; Iqbal, Javed; Khalid, Mohammad

doi:10.1016/j.jece.2021.106006

Cited by 42 publications

(10 citation statements)

References 39 publications

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“…This calculated optical band gap goes well with the existing literature related to the material. 37 Cyclic voltammetry.-The cyclic voltammetry (CV) of PANI/MnO 2 in H 2 SO 4 solution (with molarity was 0.4 M) was also measured. The potential window for this experiment was put −0.1 V to +0.35 V and the scan rate was kept 10 mVs −1 .…”

Section: A D 2303 4 α = [ ]mentioning

confidence: 99%

Performance of a PANI/MnO₂ Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Rather¹,

Farooq²,

Ahmad³

2023

ECS J. Solid State Sci. Technol.

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Polyaniline/Manganese dioxide (PANI/MnO2) nanocomposite has been successfully prepared by in situ polymerization method. The X-ray Diffraction (XRD) data confirm the formation of PANI/MnO2 nanocomposites. Fourier Transform Infrared (FT-IR) spectroscopy confirms the vibrationsdominant by metal oxide and polymer in the complex format. The Scanning Electron Microscope (SEM) shows that these nanocomposites exhibits nano rods like morphologies. The optical properties were studied by UV–visible Spectroscopy and the optical band gaps were estimated to be around 1.62 eV. Also this composite follow indirect allowed transition. Cyclic Voltammetry (CV) of this composites were also studied, and from this data the specific capacitance (Cp), energy density (Ed), power density (Pd) and charge retention were also calculated. Additionally, from CV data, the energy levels such as the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) were also determined. A supercapacitor of this understudy material was designed and it’s charging and discharging under different conditions (like under the exposure of different wavelengths of light and various intensities of static magnetic fields)were also studied and explained. The preliminary designed supercapacitor shows good charge retention capacity. The specific capacitance of this capacitor remainsaround 463 Fg−1 at 200 cycles. Besides this, a planner diode of this composite was also fabricated and this diode was tested for current-voltage (IV) characteristics under various conditions like under exposure to photons of various wavelengths and in presence of different static magnetic fields.The various parameters related with this diode were analyzed and studied. The dielectric studies of this material were studied. The current materials could be explored as a good candidate for modern energy storage and optoelectronics applications.

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Section: A D 2303 4 α = [ ]mentioning

confidence: 99%

Performance of a PANI/MnO₂ Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Rather¹,

Farooq²,

Ahmad³

2023

ECS J. Solid State Sci. Technol.

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“…In recent years, MnO 2 -carbon materials have shown excellent performances in the photocatalytic degradation of organic dyes, which has attracted extensive research by researchers [ 239 , 240 , 241 , 242 , 243 , 244 , 245 , 246 , 247 , 248 , 249 ] ( Table 4 ). Park et al [ 250 ] synthesized PANI-rGO-MnO 2 ternary composites by polymerizing aniline with rGO and incorporating MnO 2 . PANI can act as an excellent electron donor and hole conductor, as channels for electron transport and storage, and is a suitable substrate for visible light-responsive photocatalysts.…”

Section: Applications Of Photocatalytic Technology In Water Treatmentmentioning

confidence: 99%

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

et al. 2023

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Water pollution is one of the most important problems in the field of environmental protection in the whole world, and organic pollution is a critical one for wastewater pollution problems. How to solve the problem effectively has triggered a common concern in the area of environmental protection nowadays. Around this problem, scientists have carried out a lot of research; due to the advantages of high efficiency, a lack of secondary pollution, and low cost, photocatalytic technology has attracted more and more attention. In the past, MnO2 was seldom used in the field of water pollution treatment due to its easy agglomeration and low catalytic activity at low temperatures. With the development of carbon materials, it was found that the composite of carbon materials and MnO2 could overcome the above defects, and the composite had good photocatalytic performance, and the research on the photocatalytic performance of MnO2-carbon materials has gradually become a research hotspot in recent years. This review covers recent progress on MnO2-carbon materials for photocatalytic water treatment. We focus on the preparation methods of MnO2 and different kinds of carbon material composites and the application of composite materials in the removal of phenolic compounds, antibiotics, organic dyes, and heavy metal ions in water. Finally, we present our perspective on the challenges and future research directions of MnO2-carbon materials in the field of environmental applications.

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“…36 It is clear that there is no other peak related to any impurity has been detected in the EDS. 39 Fig. 4b and c shows the EDS spectrum of the LMNS and LMNS/M2 nanoparticles, respectively.…”

Section: Njc Papermentioning

confidence: 99%

Li₂Mn_0.8Ni_0.2SiO₄/MnO₂ nanocomposite for high-performance supercapacitor applications

et al. 2023

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Enhanced photocatalytic performance of PANI-rGO-MnO2 ternary composite for degradation of organic contaminants under visible light

Cited by 42 publications

References 39 publications

Performance of a PANI/MnO₂ Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Performance of a PANI/MnO₂ Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

Li₂Mn_0.8Ni_0.2SiO₄/MnO₂ nanocomposite for high-performance supercapacitor applications

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Enhanced photocatalytic performance of PANI-rGO-MnO2 ternary composite for degradation of organic contaminants under visible light

Cited by 42 publications

References 39 publications

Performance of a PANI/MnO2 Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Performance of a PANI/MnO2 Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

Li2Mn0.8Ni0.2SiO4/MnO2 nanocomposite for high-performance supercapacitor applications

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Performance of a PANI/MnO₂ Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Performance of a PANI/MnO₂ Nanocomposite-Based Supercapacitor/Diode Under DC Magnetic Field and Visible and Ultraviolet Photon Irradiation

Li₂Mn_0.8Ni_0.2SiO₄/MnO₂ nanocomposite for high-performance supercapacitor applications