Facile synthesis of palladium nanoparticle doped polyaniline nanowires in soft templates for catalytic applications

Kshirasagar, Krushna J.; Markad, Uddhav S.; Saha, Abhijit; Sharma, Kiran K.; Sharma, Geeta

doi:10.1088/2053-1591/aa5947

Cited by 16 publications

(6 citation statements)

References 51 publications

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“…e one-dimensional PANi nanostructures can be fabricated using chemical and/or electrochemical routes [24][25][26]. In the development of electrochemical DNA sensors based on onedimensional nanostructures, electrosynthesis methods have shown many advantages compared to chemical methods, such as rapidity, ease of mass production, uniformity, and low cost [27].…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Effective Surface Area of a Polyaniline Nanowire-Based Platinum Microelectrode and Development of an Electrochemical DNA Sensor

Tran

Cao

et al. 2022

Journal of Nanotechnology

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Electrochemical DNA sensors based on nanocomposite materials of polyaniline nanowires (PANi NWs) have been published in the literature. However, it is interesting that there are very few research studies related to the development of electrochemical DNA sensors based on PANi NWs individually. In this study, PANi NWs were synthesized site-specifically on a Pt microelectrode with only 0.785 mm2 area using an electropolymerization procedure. The electrosynthesis allows direct deposition of PANi NWs onto the Pt microelectrode in a rapid and cost-effective way. The good properties of PANi NWs including uniform size, uniform distribution throughout the Pt working electrode, and H2SO4 doping which improved the conductivity of the PANi material were obtained. Especially, the electrochemically effective surface area of the PANi NW-based Pt microelectrode determined in this work is nearly 19 times larger than that of the Pt working electrode. The PANi NW layer with large electrochemically effective surface area and high biocompatibility is consistent with the application in electrochemical DNA sensors. The fabricated DNA sensors show advantages such as simple fabrication, direct detection, high sensitivity (with the detection limit of 2.48 × 10−14 M), good specificity, and low sample volume requirement. This study also contributes to confirm the role of PANi NWs in DNA probe immobilization as well as in electrochemical signal transmission in the development of electrochemical DNA sensors.

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Section: Introductionmentioning

confidence: 99%

Electrochemically Effective Surface Area of a Polyaniline Nanowire-Based Platinum Microelectrode and Development of an Electrochemical DNA Sensor

Tran

Cao

et al. 2022

Journal of Nanotechnology

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“…I D /I G is used to characterize the level of disorder. For high quality GO, without defects and amorphous carbon, the I D /I G ratio is less than 2.0 [28]. The I D /I G ratio of GO and GO-PANI nanocomposites are calculated to be 1.10 and 1.06 respectively indicating increasing defects of GO-PANI nanocomposite.…”

Section: Resultsmentioning

confidence: 95%

“…The sp 3 /sp 2 intensity ratio of these two bands is close to unity which suggests conducting nature with minimum defects. The Raman intensity increases for the three separate disorder peaks corresponding to: D (1350 cm −1 ), which scatters from K to K′ (intervalley); D′ (1620 cm −1 ), [28]. Figure 2(b) shows the Raman spectra of GO-PANI nanocomposite, a bipolaronic N-H bonding vibration at 1597 cm −1 is the indicative of pressence of PANI.…”

Section: Resultsmentioning

confidence: 98%

Swollen liquid crystalline mesophase assisted synthesis of GO-PANI nanocomposite as a fluorescent probe for purines

Tayade

Tawade

Talele

et al. 2019

Methods Appl. Fluoresc.

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This article focuses on the use of graphene oxide-polyaniline (GO-PANI) nanocomposite as fluorescent probe for sensing of adenine (A) and guanine (G). Swollen liquid crystalline mesophase were used for the synthesis of graphene oxide-polyaniline nanocomposite. GO-PANI nanocomposite showed enhanced fluorescent at 441 nm (ƛexcitation = 361 nm) on interaction of purines viz A and G solutions in dimethyl sulfoxide, GO exhibited quenching at 540 nm (ƛexcitation = 261 nm). The fluorescence emission spectra of GO-PANI nanocomposite and GO were recorded in the the pressence of A and G concentrations upto 1.2 × 10−4 M. The limits of detection (LOD) calculated from the concentration dependence study for GO-PANI nanocomposite and GO are 7.5 × 10−6 M and 13.4 × 10−6 M respectively. The LOD in the case of GO is identical for both A (13.0 × 10−6) and G (13.6 × 10−6 M). The binding constant (Kb) determined for GO-PANI with purines are in the range of 0.05-0.08 × 103 M−1 which is higher in the case of GO (2.42–7.52 × 103 M−1). The lifetime measurement demonstrates, an excited state interaction of GO-PANI nanocomposite and GO with purines. This is evident from the increasing lifetime from 4.3 ns to 29.2 ns for GO-PANI nanocomposite, while 17.5 ns to 37.2 ns for GO respectively. The relatively short lifetime of the GO-PANI nanocomposite in comparison with GO suggest an electronic charge dissipation of the excited state between polyaniline and graphene oxide possibly due to the alignment of polyaniline on the graphene oxide sheet. The photopysical properties of GO-PANI nanocomposite and GO observed in this study is new and has potential for application as fluorescent probe for the detection of purines.

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“…Pd nanowires were also synthesized in hexagonal mesophases using electron beams [71]. A combination of chemical oxidation and radiolysis was successfully used to synthesize well-defined 1D Pd-PANI nanocomposites in the confinement of swollen liquid crystalline mesophases [72]. Figure 8 presents TEM images of Pd and Pt-Pd nanostructures synthesized in hexagonal mesophases using ionizing radiation.…”

Section: Stabilization Of the Formed Nanostructures And Supported Nan...mentioning

confidence: 99%

“…Materials 2024, 17, x FOR PEER REVIEW 11 of 23 [72]. Figure 8 presents TEM images of Pd and Pt-Pd nanostructures synthesized in hexagonal mesophases using ionizing radiation.…”

Section: Stabilization Of the Formed Nanostructures And Supported Nan...mentioning

confidence: 99%

Synthesis of Metallic Nanostructures Using Ionizing Radiation and Their Applications

Remita,

Lampre

2024

Materials

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This paper reviews the radiation-induced synthesis of metallic nanostructures and their applications. Radiolysis is a powerful method for synthesizing metallic nanoparticles in solution and heterogeneous media, and it is a clean alternative to other existing physical, chemical, and physicochemical methods. By varying parameters such as the absorbed dose, dose rate, concentrations of metallic precursors, and nature of stabilizing agents, it is possible to control the size, shape, and morphology (alloy, core-shell, etc.) of the nanostructures and, consequently, their properties. Therefore, the as-synthesized nanoparticles have many potential applications in biology, medicine, (photo)catalysis, or energy conversion.

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Facile synthesis of palladium nanoparticle doped polyaniline nanowires in soft templates for catalytic applications

Cited by 16 publications

References 51 publications

Electrochemically Effective Surface Area of a Polyaniline Nanowire-Based Platinum Microelectrode and Development of an Electrochemical DNA Sensor

Electrochemically Effective Surface Area of a Polyaniline Nanowire-Based Platinum Microelectrode and Development of an Electrochemical DNA Sensor

Swollen liquid crystalline mesophase assisted synthesis of GO-PANI nanocomposite as a fluorescent probe for purines

Synthesis of Metallic Nanostructures Using Ionizing Radiation and Their Applications

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