Synthesis and characterization of GaN/PEDOT–PPY nanocomposites and its photocatalytic activity and electrochemical detection of mebendazole

Munusamy, S.; Suresh, R.; Giribabu, K.; Manigandan, R.; Kumar, S. Praveen; Muthamizh, S.; Chandran, Bagavath; Stephen, A.; Kumar, J.; Narayanan, Vijaykrishnan

doi:10.1016/j.arabjc.2015.10.012

Cited by 20 publications

(8 citation statements)

References 27 publications

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“…The FTIR absorption band at 566 cm −1 in Ppy-PEDOT:PSS clarifies the interaction between Ppy and PEDOT:PSS, and the remaining bands were related to the PEDOT:PSS and Ppy-PEDOT:PSS composites. 22 Moreover, the peak located at 677 cm −1 attributed to Ga−O confirms the existence of GaN in all hybrid samples. 19 Also, the shifting of the band stretching modes toward a lower wavenumber suggested the hybridization in between Ppy and PE-DOT:PSS.…”

Section: Resultsmentioning

confidence: 99%

“…FTIR spectroscopy was used to explain the chemical bonds and the functional groups within the prepared devices, as shown in the Supporting Information Figure S1a. The FTIR absorption band at 566 cm –1 in Ppy-PEDOT:PSS clarifies the interaction between Ppy and PEDOT:PSS, and the remaining bands were related to the PEDOT:PSS and Ppy-PEDOT:PSS composites . Moreover, the peak located at 677 cm –1 attributed to Ga–O confirms the existence of GaN in all hybrid samples .…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 257 and 298 nm are due to the aromatic rings of PSS. However, the small absorption located at around 370 nm can be attributed to the π–π* transitions in the Ppy-PEDOT:PSS nanocomposite. − After loading of Ag NWs into the Ppy-PEDOT:PSS composite, the peaks appeared approximately at 265, 274, 308, and 368 nm. , Further, the peaks were shifted to 265 and 368 nm with reference to Ppy-PEDOT:PSS and Ag NWs. Moreover, the increased absorption peak intensities indicate the successful interaction between Ag NWs and the Ppy-PEDOT:PSS composite. , Moreover, the strong absorption peak arises at 368 nm, which represents the existence of surface plasmonic nature in the composite polymer.…”

Section: Resultsmentioning

confidence: 99%

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Ag Nanowire-Plasmonic-Assisted Charge Separation in Hybrid Heterojunctions of Ppy-PEDOT:PSS/GaN Nanorods for Enhanced UV Photodetection

Pasupuleti

Reddeppa

Park

et al. 2020

ACS Appl. Mater. Interfaces

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The surface states, poor carrier life, and other native defects in GaN nanorods (NRs) limit their utilization in high-speed and large-gain ultraviolet (UV) photodetection applications. Making a hybrid structure is one of the finest strategies to overcome such impediments. In this work, a polypyrrole (Ppy)-poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/GaN NRs hybrid structure is introduced for self-powered UV photodetection applications. This hybrid structure yields high photodetection performance, while pristine GaN NRs showed negligible photodetection properties. The ability of the photodetector is further boosted by functionalizing the hybrid structure with Ag nanowires (NWs). The Ag NWsfunctionalized hybrid structure exhibited a responsivity of 3.1 × 10 3 (A/W), detectivity of 3.19 × 10 14 Jones, and external quantum efficiency of 1.0 6 × 10 6 (%) under a UV illumination of λ = 382 nm. This high photoresponse is due to the huge photon absorption rising from the localized surface plasmonic effect of a Ag NWs network. Also, the Ag NWs significantly improved the rising and falling times, which were noted to be 0.20 and 0.21 s, respectively. The model band diagram was proposed with the assistance of X-ray photoelectron spectroscopy to explore the origin of the superior performance of the Ag NWs-decorated Ppy-PEDOT:PSS/GaN NRs photodetector. The proposed hybrid structure seems to be a promising candidate for the development of high-performance UV photodetectors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Ag Nanowire-Plasmonic-Assisted Charge Separation in Hybrid Heterojunctions of Ppy-PEDOT:PSS/GaN Nanorods for Enhanced UV Photodetection

Pasupuleti

Reddeppa

Park

et al. 2020

ACS Appl. Mater. Interfaces

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“…The optical bandgap of Ppy was estimated to be 3.1 eV from Tauc plot (see inset of Figure 1c). [8,9] The band at 557 cm À1 (C─N) and others suggested the existence of related functional groups and their vibrational bands in Ppy, and the peak at 669 cm À1 corresponds to Ga─O, [10,11] confirming the successful deposition of Ppy into the GaN NRs surface, as shown in Figure S1a, Supporting Information. The XPS survey scan exhibited the peaks, related to the Ga 2p, Ga 3d, O 1s, C 1s, and N 1s states of Ppy/GaN NRs and Ppy, as displayed in Figure S1b, Supporting Information.…”

mentioning

confidence: 77%

Efficient Charge Separation in Polypyrrole/GaN‐Nanorod‐Based Hybrid Heterojunctions for High‐Performance Self‐Powered UV Photodetection

Pasupuleti

Reddeppa

Park

et al. 2021

Physica Rapid Research Ltrs

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The ozonosphere is infiltrated by UV‐A rays (λ = 320–400 nm) that reach the Earth's atmosphere, posing serious health problems such as premature aging and skin cancer. Owing to the importance of UV‐A ray detection, highly detective, novel, and high‐speed UV‐A photodetectors have recently attracted considerable attention. The integration of organic and inorganic hybrid structures yields highly attractive optoelectronic properties that make them attractive candidates for high‐performance self‐powered UV‐A photodetectors. Herein, the integration of conductive polypyrrole (Ppy) and GaN nanorods for high‐performance self‐powered UV‐A photodetectors is demonstrated. The device exhibits superior photoresponse properties such as detectivity, responsivity, and external quantum efficiency values as 5.0 × 1012 Jones, 102 A W−1, and 29.8 × 103%, respectively, at a power density of 1.32 mW cm−2 (λ = 382 nm) and zero bias, which are relatively higher than those of pristine GaN nanorods. Furthermore, the device exhibits good stability and reproducibility with fast rising (350 ms) and falling (410 ms) times. The high photoresponse is attributed to the large built‐in potential formed at the interface junction of the Ppy and the GaN nanorods. Furthermore, the mechanism behind the high photoresponse is investigated using an X‐ray photoelectron spectroscopy (XPS) analysis and energy band theory.

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“…Other nanocomposites based on Gallium nitride nanoparticles (GaN) and poly(3,4-ethylenedioxythiophene)-co-polypyrrole (GaN/PEDOT-PPY) were synthesized using supercritical ammonia method and by chemical oxidative polymerization method. The nanocomposite was used as an electrochemical catalyst for the oxidation of an antihelminthic drug mebendazole using differential pulse voltammetry [153]. Bismuth recognized with a low toxicity and widely used in electroanalytical as environmentally friendly electrode since the first publication of Wang et al, [154].…”

Section: Other Metal-polymer Nanocompositesmentioning

confidence: 99%

Recent progress in nanocomposites based on conducting polymer: application as electrochemical sensors

et al. 2018

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Over the years, intensive research works have been devoted to conducting polymers due to their potential application in many fields such as fuel cell, sensors, and capacitors. To improve the properties of these compounds, several new approaches have been developed which consist in combining conducting polymers and nanoparticles. Then, this review intends to give a clear overview on nanocomposites based on conducting polymers, synthesis, characterization, and their application as electrochemical sensors. For this, the paper is divided into two parts: the first part will highlight the nanocomposites synthesized by combination of carbon nanomaterials (CNMs) and conducting polymers. The preparation of polymer/CNMs such as graphene and carbon nanotube modified electrode is presented coupled with relevant applications. The second part consists of a review of nanocomposites synthesized by combination of metal nanoparticles and conducting polymers.

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Synthesis and characterization of GaN/PEDOT–PPY nanocomposites and its photocatalytic activity and electrochemical detection of mebendazole

Cited by 20 publications

References 27 publications

Ag Nanowire-Plasmonic-Assisted Charge Separation in Hybrid Heterojunctions of Ppy-PEDOT:PSS/GaN Nanorods for Enhanced UV Photodetection

Ag Nanowire-Plasmonic-Assisted Charge Separation in Hybrid Heterojunctions of Ppy-PEDOT:PSS/GaN Nanorods for Enhanced UV Photodetection

Efficient Charge Separation in Polypyrrole/GaN‐Nanorod‐Based Hybrid Heterojunctions for High‐Performance Self‐Powered UV Photodetection

Recent progress in nanocomposites based on conducting polymer: application as electrochemical sensors

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