In situ growth of Prussian blue nanocubes on polypyrrole nanoparticles: facile synthesis, characterization and their application as fiber optic gas sensor

Muthusamy, Suganthi; Charles, Julie; Renganathan, B.; Sastikumar, D.

doi:10.1007/s10853-018-2733-2

Cited by 31 publications

(11 citation statements)

References 45 publications

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“…The XRD pattern of the PB nanoparticles (Figure 2a) is assignable to a typical face-centered cubic PB crystal structure (JCPDS No. 73-0687) [19]. The diffraction peaks of PB still remain in the PB/GO composite even after the hybridization with GO, however the characteristic peaks of the GO nanosheets are not detected because the anchored PB nanoparticles cover the surface of GO nanosheets, thus preventing their restacking.…”

Section: Resultsmentioning

confidence: 99%

Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications

et al. 2019

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This work reports the successful preparation of nanoporous iron oxide/carbon composites through the in-situ growth of Prussian blue (PB) nanoparticles on the surface of graphene oxide (GO) nanosheets. The applied thermal treatment allows the conversion of PB nanoparticles into iron oxide (Fe2O3) nanoparticles. The resulting iron oxide/carbon composite exhibits higher specific capacitance at all scan rates than pure GO and Fe2O3 electrodes due to the synergistic contribution of electric double-layer capacitance from GO and pseudocapacitance from Fe2O3. Notably, even at a high current density of 20 A g−1, the iron oxide/carbon composite still shows a high capacitance retention of 51%, indicating that the hybrid structure provides a highly accessible path for diffusion of electrolyte ions.

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Section: Resultsmentioning

confidence: 99%

Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications

et al. 2019

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“…Besides, the proposed sensor has the advantages of simple structure and low cost of PPy films. [36] Silica microfiber PMMA microwire 0-15,000 250, 9.4 [37] single-mode silica fiber nano-sized SnO 2 1000-20,000 10, 55 (1000 ppm) [38] multimode PMMA fiber polypyrrole/Prussian blue 0-500 none This paper POF-PPy2 PPy films 140-3500 5, 8 (140 ppm)…”

Section: Reactant Concentrationmentioning

confidence: 99%

Ethanol Gas Sensitivity Sensor Based on Roughened POF Taper of Modified Polypyrrole Films

Liu

Hou

2020

Sensors

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The three polypyrrole (PPy) films with different mixture ratios, namely PPy1, PPy2, and PPy3, were synthesized by chemical oxidation with pyrrole and ferric chloride (FeCl3). The roughened plastic optical fiber (POF) taper assembled PPy films (POF-PPy1, POF-PPy2, and POF-PPy3) were facilely prepared and bent U shape structure for testing ethanol gas at room temperature. The morphologies of the PPy films and the roughened POF taper were studied using electron microscopy. The effect of the three PPy films on the gas response was investigated and the results showed that the POF-PPy2 exhibited a high sensitivity of 5.08 × 10−5 dB/ppm. The detection limit of the sensor was 140 ppm and its response and recovery times were 5 s and 8 s, respectively. The results also showed that as the bending radius decreased, the response and recovery times gradually shortened, while the output power increased. In addition, the proposed sensor has advantages of a low cost and simple structure.

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“…1e . Results confirm a face-centered cubic phase of Cr-PBA with main peaks 24.2° (220), 34.5° (400), 38.7° (420), and 52.8° (600) 26 . The surface morphology of a Cr-PBA film probed by atomic force microscopy (AFM) is displayed in Supplementary Fig.…”

Section: Resultsmentioning

confidence: 52%

A scalable molecule-based magnetic thin film for spin-thermoelectric energy conversion

Park

Choe

et al. 2021

Nat Commun

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Spin thermoelectrics, an emerging thermoelectric technology, offers energy harvesting from waste heat with potential advantages of scalability and energy conversion efficiency, thanks to orthogonal paths for heat and charge flow. However, magnetic insulators previously used for spin thermoelectrics pose challenges for scale-up due to high temperature processing and difficulty in large-area deposition. Here, we introduce a molecule-based magnetic film for spin thermoelectric applications because it entails versatile synthetic routes in addition to weak spin-lattice interaction and low thermal conductivity. Thin films of CrII[CrIII(CN)6], Prussian blue analogue, electrochemically deposited on Cr electrodes at room temperature show effective spin thermoelectricity. Moreover, the ferromagnetic resonance studies exhibit an extremely low Gilbert damping constant ~(2.4 ± 0.67) × 10−4, indicating low loss of heat-generated magnons. The demonstrated STE applications of a new class of magnet will pave the way for versatile recycling of ubiquitous waste heat.

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In situ growth of Prussian blue nanocubes on polypyrrole nanoparticles: facile synthesis, characterization and their application as fiber optic gas sensor

Cited by 31 publications

References 45 publications

Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications

Nanoporous Iron Oxide/Carbon Composites through In-Situ Deposition of Prussian Blue Nanoparticles on Graphene Oxide Nanosheets and Subsequent Thermal Treatment for Supercapacitor Applications

Ethanol Gas Sensitivity Sensor Based on Roughened POF Taper of Modified Polypyrrole Films

A scalable molecule-based magnetic thin film for spin-thermoelectric energy conversion

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