Substantial enhancement of mechanical properties for SnSe based composites with potassium titanate whiskers

Li, Junchao; Duan, Bo; Li, Jialiang; Ruan, Zheng; Gao, Tao; Zhou, Fang; Li, Guodong; Zhai, Pengcheng; Chen, Gang

doi:10.1007/s10854-019-01170-x

Cited by 9 publications

(17 citation statements)

References 34 publications

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Section: Properties and Modulationmentioning

confidence: 99%

“…The mechanical properties of bulk SnSe are not excellent. However, these properties of SnSe can be enhanced by combining it with CNT, [121] K 2 Ti 6 O 13 Whiskers, [122] and Pb doping. [123] Recently, Zheng et al [124] explored the vertical Young's modulus and interlayer coupling strength of a ≈20 nm thick SnSe nanosheet by contact-resonance AFM.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Wang

Huang

et al. 2022

Adv Funct Materials

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Layered SnSe is an emerging class of black phosphorus, which is non-toxic, eco-friendly, and chemically stable. Recently, SnSe nanostructures have triggered more research interest and enabled broad applications beyond demonstrating their great performances on thermoelectricity. However, there are also a great many significant studies of SnSe nanostructures beyond thermoelectricity. SnSe quantum dots, nanosheets, nanowires, and thin films with diverse morphologies have been synthesized using various chemical and physical preparation approaches. SnSe is a multi-phase semiconductor, and its nanostructures endow unique properties, including small electron effective mass, ultralow thermal conductivity, huge anisotropy, and the largest 2D piezoelectric coefficient ever predicted. The versatility of SnSe nanostructures can enable potential applications ranging from ultrafast photonics, logic devices, photodetectors, solar cells, photocatalysis, energy storage, and biology to more cutting-edge interdisciplinary subjects. In this review, the recent advances made in SnSe nanostructures are summarized, covering basics, synthesis, properties, and applications, just giving a passing comment on thermoelectricity. An in-depth perspective on the challenges and prospects of SnSe nanostructures toward broad and practical applications is also given.

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Section: Properties and Modulationmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Wang

Huang

et al. 2022

Adv Funct Materials

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“…Among the state‐of‐the‐art thermoelectric materials, tin selenide (SnSe) is one of the most promising candidates to apply to thermoelectric devices due to its environmentally friendly feature, high cost‐effectiveness, and outstanding thermoelectric performance derived from its appropriate bandgap of ≈0.9 eV and intrinsic low κ l 9,10 . Figure a shows the development timeline for all SnSe‐based bulk thermoelectric materials,11–124 from which a record high ZT of ≈2.8 at 773 K was found in the n‐type SnSe single crystal,11 derived from its ultralow κ l of ≈0.18 W m −1 K −1 and high S 2 σ of ≈9.0 µW cm −1 K −2 at this temperature 125. Such a high ZT is also very competitive to other state‐of‐the‐art thermoelectric systems which possess ZTs > 2, such as PbTe,126–134 GeTe,135–147 Cu 2 Se/Cu 2 S,148–157 and AgSbTe 2 158.…”

Section: Introductionmentioning

confidence: 97%

“…A summary of ZTs for SnSe‐based thermoelectric materials. a) The timeline for state‐of‐the‐art SnSe bulks thermoelectric materials,11–124,169–182 the performance achieved by solution route are circled by yellow. b) Temperature‐dependent ZT and c) corresponding peak and average ZT values for polycrystalline SnSe through different fabrication techniques 13,16,22,46,58,62,95,99,101.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

2020

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Tin selenide (SnSe) is one of the most promising candidates to realize environmentally friendly, cost‐effective, and high‐performance thermoelectrics, derived from its outstanding electrical transport properties by appropriate bandgaps and intrinsic low lattice thermal conductivity from its anharmonic layered structure. Advanced aqueous synthesis possesses various unique advantages including convenient morphology control, exceptional high doping solubility, and distinctive vacancy engineering. Considering that there is an urgent demand for a comprehensive survey on the aqueous synthesis technique applied to thermoelectric SnSe, herein, a thorough overview of aqueous synthesis, characterization, and thermoelectric performance in SnSe is provided. New insights into the aqueous synthesis‐based strategies for improving the performance are provided, including vacancy synergy, crystallization design, solubility breakthrough, and local lattice imperfection engineering, and an attempt to build the inherent links between the aqueous synthesis‐induced structural characteristics and the excellent thermoelectric performance is presented. Furthermore, the significant advantages and potentials of an aqueous synthesis route for fabricating SnSe‐based 2D thermoelectric generators, including nanorods, nanobelts, and nanosheets, are also discussed. Finally, the controversy, strategy, and outlook toward future enhancement of SnSe‐based thermoelectric materials are also provided. This Review guides the design of thermoelectric SnSe with high performance and provides new perspectives as a reference for other thermoelectric systems.

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“…And the more insoluble aluminosilicate was expected. In fact, the potassium titanate obtained following K 2 CO 3 roasting is widely used, for instance, as insulation and electrical insulation material (Cao et al 2019;Li et al 2019), rendering it more valuable than sodium titanate. In the present study the conditions for the recovery of vanadium and tungsten from waste SCR catalysts by way of K 2 CO 3 roasting and water leachingwere investigated.…”

Section: Introductionmentioning

confidence: 99%

Recovery of vanadium and tungsten from waste selective catalytic reduction catalysts by K2CO3 roasting and water leaching followed by CaCl2 precipitation

Liu

Yang

2020

Int J Coal Sci Technol

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Waste selective catalytic reduction (SCR) catalysts are potential environmental hazards. In this study, the recovery of vanadium and tungsten from waste SCR catalysts by K2CO3 roasting and water leaching was investigated. The roasting and leaching conditions were optimized: the leaching efficiencies of vanadium and tungsten were 91.19% and 85.36%, respectively, when 18 equivalents of K2CO3 were added to perform the roasting at 900 °C for 2 h, followed by leaching at 90 °C for 1 h. Notably, in the described conditions, the leaching rate of silicon was only 28.55%. Titanates, including K2Ti6O13 and KTi8O17, were also produced. Si removal was achieved in 85% efficiency adjusting the pH to 9.5, and the Si impurity thus isolated was composed of amorphous Si. Tungsten and vanadium were precipitated using CaCl2. At pH 10 and following the addition of 0.10 mol of H2O2 and 16 equivalents of CaCl2, the precipitating efficiencies of tungsten and vanadium were 96.89% and 99.65%, respectively. The overall yield of tungsten and vanadium was 82.71% and 90.87%, respectively. Graphic abstract

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Substantial enhancement of mechanical properties for SnSe based composites with potassium titanate whiskers

Cited by 9 publications

References 34 publications

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

High‐Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges

Recovery of vanadium and tungsten from waste selective catalytic reduction catalysts by K2CO3 roasting and water leaching followed by CaCl2 precipitation

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