Visible light photocatalytic properties of cubic and orthorhombic SnS nanoparticles

Hegde, Shweta; Surendra, B.S.; Talapatadur, Vijaya; Murahari, Prashantha; Ramesh, K.

doi:10.1016/j.cplett.2020.137665

Cited by 70 publications

(17 citation statements)

References 27 publications

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“…The XRD patterns of the particles synthesized with Sn precursor concentrations of 0.04–0.20 M show intense diffraction at 2θ angles of 26.6° and 30.8°, in addition to weak diffractions at 18.6°, 23.0°, 31.7°, 32.7°, 35.6°, 39.5°, 44.1°, 44.9°, 50.3°, and 52.2° related to the (222) and (400) planes, and (211), (300), (410), (411), (421), (510), (440), (441), (540), and (622) planes, respectively. All the observed planes correspond to the cubic structure of SnS (π-SnS) with the P2 1 3 space group [ 21 , 22 ]. However, the π-SnS nanoparticles synthesized with low Sn precursor concentrations of 0.04 M and 0.08 M showed additional diffraction peaks related to Sn 2 S 3 phase.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of π-SnS Nanoparticles and Corresponding Thin Films

et al. 2021

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Tin sulfide polymorph (π-SnS) nanoparticles exhibit promising optoelectrical characteristics for photovoltaic and hydrogen production performance, mainly because of the possibility of tuning their properties by adjusting the synthesis conditions. This study demonstrates a chemical approach to synthesize π-SnS nanoparticles and the engineering of their properties by altering the Sn precursor concentration (from 0.04 M to 0.20 M). X-ray diffraction and Raman studies confirmed the presence of pure cubic SnS phase nanoparticles with good crystallinity. SEM images indicated the group of cloudy shaped grains, and XPS results confirmed the presence of Sn and S in the synthesized nanoparticles. Optical studies revealed that the estimated energy bandgap values of the as-synthesized π-SnS nanoparticles varied from 1.52 to 1.68 eV. This work highlights the effects of the Sn precursor concentration on the properties of the π-SnS nanoparticles and describes the bandgap engineering process. Optimized π-SnS nanoparticles were used to deposit nanocrystalline π-SnS thin films using the drop-casting technique, and their physical properties were improved by annealing (300 °C for 2 h).

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of π-SnS Nanoparticles and Corresponding Thin Films

et al. 2021

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“…Upon increasing the content of Se, the thicknesses of SnS x Se 1−x thin films are increased, as shown in Figure S1. The surface and cross-sectional morphologies of SnS 0.5 Se 0.5 /Ag thin films were also characterized, as shown in Figure 3e(1)−h(1),e(2)−h (2). The surface morphologies of SnS 0.5 Se 0.5 /Ag thin films are similar.…”

Section: Preparation Of Snsmentioning

confidence: 76%

“…Two-dimensional layered IV–VI group semiconductor materials have attracted great attention due to their excellent photoelectric properties . Among them, SnS has an optical band gap of about 1.0–1.5 eV and a high absorption coefficient (>10 4 cm –1 ). , It is cheap, non-toxic, rich on earth, and considered as a potential solar energy material. − SnSe also has good optical properties and its band gap is about 0.9–1.3 eV. Its atoms are arranged in two adjacent double layers of tin and selenium through weak van der Waals interactions.…”

Section: Introductionmentioning

confidence: 99%

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SnS_xSe_1–x/Ag Nanosheet Thin Films for Solar Energy Water Splitting

Gong

Cao

Jiang

et al. 2021

ACS Appl. Nano Mater.

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Earth-abundant and ecofriendly minerals SnS x Se1–x can be promising candidates for photoelectrochemical (PEC) cells because of their tunable band gaps and high absorption efficiency. Metal nanoparticle-modified SnS x Se1–x enhance the efficiencies of solar energy water splitting. In this paper, SnS x Se1–x nanosheets (NSs) were prepared by a one-pot method and silver (Ag) nanoparticles were deposited on the surface of SnS x Se1–x NSs through a photochemical reduction process. The structural properties of SnS x Se1–x and SnS x Se1–x /Ag NSs were characterized by X-ray diffraction (XRD) and Raman spectroscopy. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the morphologies of SnS x Se1–x and SnS x Se1–x /Ag NSs. The band gaps of SnS x Se1–x and SnS x Se1–x /Ag NSs were determined using the UV–Vis–NIR spectra. PEC measurements indicated that the photocurrents of SnS x Se1–x thin films increased first and then decreased with the increase of Se. The SnS0.5Se0.5 thin films had the best PEC properties. The modification of Ag nanoparticles enhanced the PEC properties of SnS x Se1–x NSs. The highest photocurrent density of 69.3 μA/cm2 and the incident monochromatic photon-to-electron conversion efficiency (IPCE) of 27.9% were obtained.

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“…The tin sulfides which consist of abundant and environmentally friendly elements have recently attracted great interest in view of the promising applications in photovoltaic absorber [1,2], photodetector [3,4], the electrode materials of lithium-ion batteries [5,6], photocatalysis [7,8], etc.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Calculations of Structural, Mechanical, Electronic And Optical Properties of Sn2S3 Under Pressure

Chen¹,

Zhu²,

Wang³

et al. 2021

Preprint

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The pressure effect on the structural, mechanical, electronic and optical properties of Sn2S3 in the pressure range of 0–35 GPa have been evaluated by means of the first-principles calculations based on the density-functional theory. The structural parameters of Sn2S3 at 0 GPa such as lattice constants and cell volumes are consistent with the previous theoretical and experiment reports. The mechanical properties about the elastic constants (Cij) and polycrystalline elastic modulus (B, G and E) under pressure are calculated for the first time. Furthermore, the results suggest that the Sn2S3 is predicted to be mechanically stable in the range of pressure from 0 to 35 GPa in the light of the mechanical stability conditions. The Sn2S3 is found to be ductile from the value of B/G. With the increasing of pressure, the ductility of Sn2S3 enhances monotonously. The pressure effect on the energy band gap and density of states of Sn2S3 is also discussed, which indicates that the pressure makes the band gap of Sn2S3 decreased. The optical properties of Sn2S3 are calculated in the range 0–35 eV, and the results show that the Sn2S3 under pressure has stronger visible light absorption in comparison with 0 GPa.

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Visible light photocatalytic properties of cubic and orthorhombic SnS nanoparticles

Cited by 70 publications

References 27 publications

Synthesis and Characterization of π-SnS Nanoparticles and Corresponding Thin Films

Synthesis and Characterization of π-SnS Nanoparticles and Corresponding Thin Films

SnS_xSe_1–x/Ag Nanosheet Thin Films for Solar Energy Water Splitting

Theoretical Calculations of Structural, Mechanical, Electronic And Optical Properties of Sn2S3 Under Pressure

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Visible light photocatalytic properties of cubic and orthorhombic SnS nanoparticles

Cited by 70 publications

References 27 publications

Synthesis and Characterization of π-SnS Nanoparticles and Corresponding Thin Films

Synthesis and Characterization of π-SnS Nanoparticles and Corresponding Thin Films

SnSxSe1–x/Ag Nanosheet Thin Films for Solar Energy Water Splitting

Theoretical Calculations of Structural, Mechanical, Electronic And Optical Properties of Sn2S3 Under Pressure

Contact Info

Product

Resources

About

SnS_xSe_1–x/Ag Nanosheet Thin Films for Solar Energy Water Splitting