Deep tuning of Bi2Te3 nanostructures suitable for thermoelectric waste heat recovery: The impact of pH on crystal growth in hydrothermal synthesis

Shyni, P.; Pradyumnan, P. P.

doi:10.1016/j.mseb.2022.116090

Cited by 2 publications

(3 citation statements)

References 34 publications

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“…The results indicate that the growth mechanism involves the formation of primary nanoplates and hierarchical structures. These nanostructures show promise as thermoelectric materials due to their reduced thermal conductivity and the modification of their potential energy band structure . In this study, a novel methodology is utilized to fabricate Bi2S3 + x mL reduced graphene oxide (rGO) nanocomposites through hydrothermal synthesis and tubular sintering.…”

Section: Methods Of Synthesismentioning

confidence: 99%

“…These nanostructures show promise as thermoelectric materials due to their reduced thermal conductivity and the modification of their potential energy band structure. 77 In this study, a novel methodology is utilized to fabricate Bi2S3 + x mL reduced graphene oxide (rGO) nanocomposites through hydrothermal synthesis and tubular sintering. The objective is to reduce thermal conductivity and enhance the thermoelectric figure-of-merit.…”

Section: Methods Of Synthesismentioning

confidence: 99%

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Advances in Nanoparticle-Enhanced Thermoelectric Materials from Synthesis to Energy Harvesting: A Review

Hussain,

Algarni,

Rasool

et al. 2024

ACS Omega

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This comprehensive review analysis examines the domain of composite thermoelectric materials that integrate nanoparticles, providing a critical assessment of their methods for improving thermoelectric properties and the procedures used for their fabrication. This study examines several approaches to enhance power factor and lattice thermal conductivity, emphasizing the influence of secondary phases and structural alterations. This study investigates the impact of synthesis methods on the electrical characteristics of materials, with a particular focus on novel techniques such as electrodeposition onto carbon nanotubes. The acquired insights provide useful guidance for the creation of new thermoelectric materials. The review also compares and contrasts organic and inorganic thermoelectric materials, with a particular focus on the potential of inorganic materials in the context of waste heat recovery and power production within industries. This analysis highlights the role of inorganic materials in improving energy efficiency and promoting environmental sustainability.

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Section: Methods Of Synthesismentioning

confidence: 99%

Section: Methods Of Synthesismentioning

confidence: 99%

Advances in Nanoparticle-Enhanced Thermoelectric Materials from Synthesis to Energy Harvesting: A Review

Hussain,

Algarni,

Rasool

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

“…A perfect OA process will yield defect-free and single crystalline nanoparticles through the attachment of primary particles in an irreversible and strongly oriented manner. An imperfect OA mechanism yields nanoparticles with surface defects, which acts as a speckle for secondary nucleation [69]. The SEM image of the as-synthesized nanoclusters and nanorods in Figure 5a,b shows several surface defects, revealing that the imperfect orient attachment mechanism leads to the formation of these hierarchical structures; (2) under alkaline conditions, the higher concentration of OH − ions leads to well-solvated ions, resulting in an enhanced rate of formation of Bi 2 Te 3 .…”

Section: Influences Of the Molar Mass Of Naohmentioning

confidence: 99%

Green Synthesis and Morphological Evolution for Bi2Te3 Nanosystems via a PVP-Assisted Hydrothermal Method

Zhou,

Zhao

et al. 2023

Nanomaterials

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Bi2Te3 has been extensively used because of its excellent thermoelectric properties at room temperature. Here, 230–420 nm of Bi2Te3 hexagonal nanosheets has been successfully synthesized via a “green” method by using ethylene glycol solution and applying polyvinyl pyrrolidone (PVP) as a surfactant. In addition, factors influencing morphological evolution are discussed in detail in this study. Among these parameters, the reaction temperature, molar mass of NaOH, different surfactants, and reaction duration are considered as the most essential. The results show that the existence of PVP is vital to the formation of a plate-like morphology. The reaction temperature and alkaline surroundings played essential roles in the formation of Bi2Te3 single crystals. By spark plasma sintering, the Bi2Te3 hexagonal nanosheets were hot pressed into solid-state samples. We also studied the transport properties of solid-state samples. The electrical conductivity σ was 18.5 × 103 Sm−1 to 28.69 × 103 Sm−1, and the Seebeck coefficient S was −90.4 to −113.3 µVK−1 over a temperature range of 300–550 K. In conclusion, the observation above could serve as a catalyst for future exploration into photocatalysis, solar cells, nonlinear optics, thermoelectric generators, and ultraviolet selective photodetectors of Bi2Te3 nanosheet-based photodetectors.

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Deep tuning of Bi2Te3 nanostructures suitable for thermoelectric waste heat recovery: The impact of pH on crystal growth in hydrothermal synthesis

Cited by 2 publications

References 34 publications

Advances in Nanoparticle-Enhanced Thermoelectric Materials from Synthesis to Energy Harvesting: A Review

Advances in Nanoparticle-Enhanced Thermoelectric Materials from Synthesis to Energy Harvesting: A Review

Green Synthesis and Morphological Evolution for Bi2Te3 Nanosystems via a PVP-Assisted Hydrothermal Method

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