Controlled synthesis of SnSxSe2−x nanoplate alloys via synergetic control of reactant activity and surface defect passivation control with surfactant and co-surfactant mixture

Won, Jong Kook; Hwang, Chahwan; Ahn, Kyunghan; Choi, Seong Young; Lee, Yong-Kyu; Kim, Jae Hyun; Lee, Yangjin; Park, Sung Kyu; Chung, In Jae; Kim, Choongik; Kim, Kwanpyo; Ahn, Sang Hyun; Lee, Min Hyung; Kim, Myung Gil

doi:10.1016/j.jssc.2019.07.048

Cited by 5 publications

(1 citation statement)

References 55 publications

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“…The band gap of these nanofibers can be adjusted by changing the reaction conditions, such as the level of basicity, S/Se ratio, and the temperature of the reaction. These nanofibers are also highly versatile and could be used in a variety of technical applications, including energy harvesting, − energy storage, , and optoelectronics. ,− Additionally, when Sb 2 Q 3 nanofibers are consolidated into pellets and heated using spark plasma sintering, they exhibit increased anisotropy in heat transport with enhanced phonon scattering in the direction parallel to the press direction.…”

Section: Introductionmentioning

confidence: 99%

Transformation of K₂Sb₈Q₁₃ and KSb₅Q₈ Bulk Crystals to Sb₂Q₃ (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

et al. 2023

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The ability to manipulate crystal structures using kinetic control is of broad interest because it enables the design of materials with structures, compositions, and morphologies that may otherwise be unattainable. Herein, we report the low-temperature structural transformation of bulk inorganic crystals driven by hard–soft acid–base (HSAB) chemistry. We show that the three-dimensional framework K2Sb8Q13 and layered KSb5Q8 (Q = S, Se, and Se/S solid solutions) compounds transform to one-dimensional Sb2Q3 nano/microfibers in N2H4·H2O solution by releasing Q2– and K+ ions. At 100 °C and ambient pressure, a transformation process takes place that leads to significant structural changes in the materials, including the formation and breakage of covalent bonds between Sb and Q. Despite the insolubility of the starting crystals in N2H4·H2O under the given conditions, the mechanism of this transformation can be rationalized by applying the HSAB principle. By adjusting factors such as the reactants’ acid/base properties, temperature, and pressure, the process can be controlled, allowing for the achievement of a wide range of optical band gaps (ranging from 1.14 to 1.59 eV) while maintaining the solid solution nature of the anion sublattice in the Sb2Q3 nanofibers.

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Section: Introductionmentioning

confidence: 99%

Transformation of K₂Sb₈Q₁₃ and KSb₅Q₈ Bulk Crystals to Sb₂Q₃ (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

et al. 2023

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State‐of‐the‐art electrochemical sensors for quantitative detection of pesticides

Kadu

Keri

Nagaraju

et al. 2023

Applied Organom Chemis

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Pesticides are hazardous chemicals that are spread on crops to protect from pests or insects. These are widely used in agriculture as well as for domestic purposes, which not only affect plants and animals but also harm the human body. Therefore, detection of these harmful pesticides is of utmost importance. Conventional methods of pesticide detection are costly, time–consuming and need manpower to perform analysis; however, electrochemical sensing of pesticides is emerging as one of the best current approaches. Since, these sensors exhibit the capability of detecting pesticides onsite, easy fabrication, high selectivity and sensitivity, hence are preferred ones from the forensic point of view. Although, there have been several studies conducted on the sensing of pesticides but this study mainly focuses on electrochemical sensing of pesticides using specific nanomaterials such as nanoparticles, nanocomposites, metal–organic framework (MOF) and 2‐dimensional materials. Additionally, this review also comprises of the comparison of analytical conditions including limit of detection of the aforementioned technique, future perspectives and challenges associated with the development of next generation sensors. Therefore this review, in a broad perspective, provides information that would be useful for the fabrication of new electrochemical sensors and their applicability in the fields of chemistry, forensic science, food technology, material science, environmental science, nanoscience and biotechnology. From the study conducted through this review, it was observed that AuNPs are the mostly used nanoparticles where enzymatic nanosensor with coating of AuNPs along with fluorine doped tin oxide exhibited good activity for the detection of pesticides.

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SnSe: The rise of the ultrahigh thermoelectric performance material

Kim,

Lee,

Chung

2024

Bulletin Korean Chem Soc

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Thermoelectric materials can generate electric power from dissipating heat without releasing any undesirable chemicals. They thus can increase global energy efficiency and reduce the use of fossil fuels that are a major resource for generating electric energy, thereby concurrently addressing energy and environmental crises seriously threatening humanity. Increasing a thermoelectric figure of merit, ZT, of materials has been a prime goal in thermoelectrics because an efficiency of thermoelectric power generation has been low until very recently. The recent development of ultrahigh thermoelectric performance in polycrystalline SnSe‐based materials is one of the most prominent breakthroughs in the history of thermoelectrics. They show an exceptionally high ZT of ~3.1 at 783 K and average ZT of ~2.0 from 400 to 783 K, which are the highest for any bulk thermoelectric systems. Here we review the recent advances in SnSe thermoelectrics, greatly changing the paradigm of studies and applications of thermoelectric technology.

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Controlled synthesis of SnSxSe2−x nanoplate alloys via synergetic control of reactant activity and surface defect passivation control with surfactant and co-surfactant mixture

Cited by 5 publications

References 55 publications

Transformation of K₂Sb₈Q₁₃ and KSb₅Q₈ Bulk Crystals to Sb₂Q₃ (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

Transformation of K₂Sb₈Q₁₃ and KSb₅Q₈ Bulk Crystals to Sb₂Q₃ (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

State‐of‐the‐art electrochemical sensors for quantitative detection of pesticides

SnSe: The rise of the ultrahigh thermoelectric performance material

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Controlled synthesis of SnSxSe2−x nanoplate alloys via synergetic control of reactant activity and surface defect passivation control with surfactant and co-surfactant mixture

Cited by 5 publications

References 55 publications

Transformation of K2Sb8Q13 and KSb5Q8 Bulk Crystals to Sb2Q3 (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

Transformation of K2Sb8Q13 and KSb5Q8 Bulk Crystals to Sb2Q3 (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

State‐of‐the‐art electrochemical sensors for quantitative detection of pesticides

SnSe: The rise of the ultrahigh thermoelectric performance material

Contact Info

Product

Resources

About

Transformation of K₂Sb₈Q₁₃ and KSb₅Q₈ Bulk Crystals to Sb₂Q₃ (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry

Transformation of K₂Sb₈Q₁₃ and KSb₅Q₈ Bulk Crystals to Sb₂Q₃ (Q = S, Se) Nanofibers by Acid–Base Solution Chemistry