Hydrothermal Synthesis, Characterization and Raman Vibrations of Chalcogenide SnS Nanorods

Ali, Safdar; Wang, Fengping; Zafar, Saba; Iqbal, Tahir

doi:10.1088/1757-899x/275/1/012007

Cited by 11 publications

(6 citation statements)

References 21 publications

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“…The observed Raman modes at 94, 219 and 225 cm -1 were assigned to A g [52] whereas the mode present at 166 cm -1 was assigned to B 3g [61] and the mode at 178 cm -1 was assigned to B 2g [52] . The observed Raman modes are in good agreement with the reported data on SnS layers [52,[60][61][62][63] . This high intense Raman mode at 94 cm -1 peak is transverse optic (TO) mode that corresponds to the rigid shear modes of a layer with respect to its neighbours in the a, b directions [60] .…”

Section: Raman Analysissupporting

confidence: 91%

“…In general, SnS with orthorhombic crystal structure had 21 optical phonon modes. Among these modes, 12 are Raman active (4A g , 2B g, 4B 2g and 2B 3g ), 7 are infrared active (3B 1u , 3B 3u and 1B 2u ), and 2 are inactive (2A u ) [60] . The observed Raman modes at 94, 219 and 225 cm -1 were assigned to A g [52] whereas the mode present at 166 cm -1 was assigned to B 3g [61] and the mode at 178 cm -1 was assigned to B 2g [52] .…”

Section: Raman Analysismentioning

confidence: 99%

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Structural and optical studies on PVA capped SnS films grown by chemical bath deposition for solar cell application

2019

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Tin monosulphide (SnS) thin films capped by PVA have been successfully deposited on glass substrates for cost effective photovoltaic device applications by a simple and low-cost wet chemical process, chemical bath deposition (CBD) at different bath temperatures varying in the range, 50–80 °C. X–ray diffraction analysis showed that the deposited films were polycrystalline in nature, showing orthorhombic structure with an intense peak corresponding to (040) plane of SnS. These observations were further confirmed by Raman analysis. FTIR spectra showed the absorption bands which corresponds to PVA in addition to SnS. The scanning electron microscopy and atomic force microscopy studies revealed that the deposited SnS films were uniform and nanostructured with an average particle size of 4.9 to 7.6 nm. The optical investigations showed that the layers were highly absorbing with the optical absorption coefficient ~105 cm–1. A decrease in optical band gap from 1.92 to 1.55 eV with an increase of bath temperature was observed. The observed band gap values were higher than the bulk value of 1.3 eV, which might be due to quantum confinement effect. The optical band gap values were also used to calculate particle size and the results are discussed.

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Section: Raman Analysissupporting

confidence: 91%

Section: Raman Analysismentioning

confidence: 99%

Structural and optical studies on PVA capped SnS films grown by chemical bath deposition for solar cell application

2019

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“…Raman spectroscopy results shown in Figure 1b indicate peaks at 91, 188, and 215 cm −1 which are assigned to the characteristic vibrational mode of A g , whereas the Raman peak at 161 cm −1 corresponds to the SnS with its vibrational mode of B 3g . [35][36][37] Next, the exfoliated SnS NFs solution was coated onto the rGO/gas permeable substrate for the cathode fabrication (see Experimental Section for more details). A scanning electron microscopy (SEM) topographical image of the SnS/rGO cathode is shown in Figure 1b.…”

Section: Materials Preparation and Characterizationmentioning

confidence: 99%

Novel Co‐Catalytic Activities of Solid and Liquid Phase Catalysts in High‐Rate Li‐Air Batteries

Zhang

Jaradat

Singh

et al. 2022

Advanced Energy Materials

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Li‐air batteries are considered strong candidates for the next‐generation energy storage systems designed for electrical transportation. However, low cyclability and current rates are two major drawbacks that hinder them from further realization. These issues necessitate the discovery of novel materials to significantly enhance the redox process of discharge products. In this study, a novel catalytic system comprised of tin sulfide (SnS) nanoflakes as a solid catalyst and tin iodide (SnI2) as a dual‐functional electrolyte additive is discovered. This system enables operating the battery at high current rates up to 10 000 mA g−1 (corresponding to 1 mA cm−2). The SnS catalyst shows outstanding catalytic activity for both oxygen reduction and evolution reactions compared to carbon, noble metals, and other transition metal dichalcogenides. It also exhibits good structural integrity at high rates. The computations indicate numerous possible oxygen reduction sites without oxygen dissociations on the SnS surface through solution mechanism that is likely responsible for the formation of Li2O2. The calculations also indicate that the role of the SnI2 is not only reacting with the lithium anode to provide protection but reducing the charge potential by promoting catalytic decomposition of the Li2O2. This work provides new novel additives for designing high‐rate Li‐air batteries.

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“…SnS is a favorable candidate for Li-S batteries because of their high electronic conductivity with 9.17 × 10 4 /cm and a high specific capacity of 994 mAh/g (Courtney et al, 1999;Armand and Tarascon, 2008). This high electronic conductivity suggests its use as cathode material instead of Li 2 S to solve the issue of insulating behavior of Li 2 S. Shujaat et al (2017) used the hydrothermal method to synthesize SnS nanorods, however they have not used it for electrochemical study. Chaudhary et al (2007) have synthesized SnS nanoflakes and studied its thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Properties of Tin Sulfide Nano-Sheets as Cathode Material for Lithium-Sulfur Batteries

et al. 2020

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Unprecedented self-assembled hierarchical nano-sheets of SnS were synthesized by the hydrothermal method. In a typical reaction, SnCl 2 .2H 2 O and Na 2 S.9H 2 O were used as reactants. Structural and morphological properties were studied by X-ray diffraction (XRD), and scanning electron microscopy (SEM) while the electrochemical properties were measured by cyclic voltammetry, charge-discharge cycles, and electrochemical impedance spectroscopy (EIS). SEM results showed the 1-D SnS nano-sheets with an average thickness of around 20 nm. Cyclic voltammogram and charge-discharge spectra showed good cycling stability. All these results showed that SnS nano-sheets are promising candidate material to be used as electrode for Li-S batteries.

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Hydrothermal Synthesis, Characterization and Raman Vibrations of Chalcogenide SnS Nanorods

Cited by 11 publications

References 21 publications

Structural and optical studies on PVA capped SnS films grown by chemical bath deposition for solar cell application

Structural and optical studies on PVA capped SnS films grown by chemical bath deposition for solar cell application

Novel Co‐Catalytic Activities of Solid and Liquid Phase Catalysts in High‐Rate Li‐Air Batteries

Electrochemical Properties of Tin Sulfide Nano-Sheets as Cathode Material for Lithium-Sulfur Batteries

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