Effect of SrTiO3 Nanoparticles in Conductive Polymer on the Thermoelectric Performance for Efficient Thermoelectrics

Park, Dabin; Ju, Heongkyu; Kim, Jooheon

doi:10.3390/polym12040777

Cited by 15 publications

(4 citation statements)

References 42 publications

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“…When the Polyindole/DNA nanomaterials were imaged on silicon and mica (Figures 7 and 8, respectively), nanostructures were clearly observed which exhibited a regular and smooth shape with complete and continuous coverage of the duplex DNA by the polymer material. The nanostructures have shown relatively similar morphologies to other polymer nanowires prepared using DNA as a template (Pruneanu et al 2008;Park et al 2020).…”

Section: Resultsmentioning

confidence: 58%

Comparative AFM Studies on the Morphology of Conducting Polymers/DNA Templated Nanowires

Ibrahim¹

2022

JMESR

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Comparative morphological studies of three conductive polymers (polyimidazole (Plm), polyindole (Pln), and polypyrrole (Ppy)) templated with deoxyribonucleic (DNA) were carried out on silicon (Si)/mica substrate with the aim of finding more insight about the extent of mixing of the polymers with the DNA and the size of the nanowires formed. Atomic force microscope (AFM) height images of bare DNA on pre-treated substrates revealed a two-dimensional network structure with an average height of approximately 1.60 ± 0.01 nm; which is close to the double stranded DNA chain height. Plm/DNA exhibits globular and agglomerate nanostructures for the concentrated polymers, while the diluted form reveals a dispersed network with a diameter of 3 - 5 nm mostly. In Pln/DNA, the AFM images show dense networks of nanowires in their concentrated form, while the diluted samples displayed individual single wires with regular and smooth morphologies. Statistical analysis of the nanowires AFM heights revealed the dominance of wires with diameters in the range of 3 - 4 nm. The most common nanowire height range was 9 - 10 nm. Comparing the three polymer AFM studies, it can be said that polypyrrole has the highest nanowires range of 9 - 10 nm, then Plm/DNA (3 - 5 nm) and the least is Pln/DNA with 3 - 4 nm range. From the nanowire sizes and morphologies (uniform, smooth and continuous), it can be concluded that both polymers have good potentials for DNA templating and application in nanoelectronic devices as they can be aligned on nanoelectrodes for passage of electricity.

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Section: Resultsmentioning

confidence: 58%

Comparative AFM Studies on the Morphology of Conducting Polymers/DNA Templated Nanowires

Ibrahim¹

2022

JMESR

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“…The XRD energy spectra of the samples such as CF/SrTiO 3 /CdS, CF/SrTiO 3 , CF, SrTiO 3 , and CdS are each exhibited in Figure 1. The characteristic diffraction peaks of the pure SrTiO 3 sample were mainly distributed at 32.4 • , 39.9 • , 46.5 • , 57.8 • , 67.8 • , and 77.1 • , which can be respectively identified as the (110), (111), (200), (211), (220), and (310) crystal faces (PDF#35-0734) [26,27]. Compared with the characteristic diffraction peak energy spectrum of the pure SrTiO 3 sample, the shapes and positions of distinctive characteristic diffraction peaks in the XRD energy spectra of the CF/SrTiO 3 and CF/SrTiO 3 /CdS samples were similar to those of the pure SrTiO 3 , indicating that SrTiO 3 was coated smoothly on these carbon fibers.…”

Section: Experimental Results and Analysismentioning

confidence: 99%

One-Dimensional CdS/SrTiO3/Carbon Fiber Core–Shell Photocatalysts for Enhanced Photocatalytic Hydrogen Evolution

Niu

Zhang

et al. 2022

Coatings

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The photocatalytic hydrogen production efficiency of a single SrTiO3 photocatalytic catalyst is often low, which is mainly due to the serious combination of electrons and holes produced by photocatalysis as well as the mismatch of the redox capacity and light absorption range. Construction of semiconductor heterojunctions can solve these problems. CdS has a narrow band gap, which can effectively utilize visible light, and it has a band structure matched with that of SrTiO3. Therefore, CdS is considered as an ideal candidate for constructing heterojunctions with SrTiO3. In this paper, bamboo pulp fibers were used as the substrate, and SrTiO3 was coated on the substrate through the solvothermal process. CF/SrTiO3 rich in oxygen vacancies was formed by high temperature carbonization, and heterojunctions were formed by loading CdS on the surface of the CF/SrTiO3 composite material through the hydrothermal method, thus obtaining one-dimensional CF/SrTiO3/CdS core–shell photocatalysts. The structure and photocatalytic hydrogen production performance of the CF/SrTiO3/CdS core–shell photocatalysts were mainly studied. The photocatalytic hydrogen production experiment showed that the hydrogen production rate of the CF/SrTiO3/CdS-2 sample under the optimized process was as high as 577.39 μmol/g·h, which was about 11 times that of the CF/SrTiO3 sample. In this composite photocatalytic material system, the loading of the CdS nanospheres could enhance the visible light absorption capacity of the composite catalyst, promote the rapid separation and high-speed migration of photocarriers, and significantly improve the photocatalytic activity.

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“…Over the past few years, the synthesis of (semi)conducting polymer nanocomposites (PNCs) has undergone in-depth investigations with a careful selection of polymer matrixes and nanofillers [ 1 , 2 , 3 ]. With this aim, conductive nanomaterials are often dispersed in insulating polymer matrixes to fabricate (semi)conducting PNCs, which are promising resources for biomedical, optoelectronic and sensing applications [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Stereolithography of Semiconductor Silver and Acrylic-Based Nanocomposites

et al. 2022

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Polymer nanocomposites (PNCs) attract the attention of researchers and industry because of their potential properties in widespread fields. Specifically, electrically conductive and semiconductor PNCs are gaining interest as promising materials for biomedical, optoelectronic and sensing applications, among others. Here, metallic nanoparticles (NPs) are extensively used as nanoadditives to increase the electrical conductivity of mere acrylic resin. As the in situ formation of metallic NPs within the acrylic matrix is hindered by the solubility of the NP precursors, we propose a method to increase the density of Ag NPs by using different intermediate solvents, allowing preparation of Ag/acrylic resin nanocomposites with improved electrical behaviour. We fabricated 3D structures using stereolithography (SLA) by dissolving different quantities of metal precursor (AgClO4) in methanol and in N,N-dimethylformamide (DMF) and adding these solutions to the acrylic resin. The high density of Ag NPs obtained notably increases the electrical conductivity of the nanocomposites, reaching the semiconductor regime. We analysed the effect of the auxiliary solvents during the printing process and the implications on the mechanical properties and the degree of cure of the fabricated nanocomposites. The good quality of the materials prepared by this method turn these nanocomposites into promising candidates for electronic applications.

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Effect of SrTiO3 Nanoparticles in Conductive Polymer on the Thermoelectric Performance for Efficient Thermoelectrics

Cited by 15 publications

References 42 publications

Comparative AFM Studies on the Morphology of Conducting Polymers/DNA Templated Nanowires

Comparative AFM Studies on the Morphology of Conducting Polymers/DNA Templated Nanowires

One-Dimensional CdS/SrTiO3/Carbon Fiber Core–Shell Photocatalysts for Enhanced Photocatalytic Hydrogen Evolution

Stereolithography of Semiconductor Silver and Acrylic-Based Nanocomposites

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