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Effect of 1-Thioglycerol as Capping Agent on ZnS Nanoparticles: Structural and Optical Characterization

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Abstract (2. Language): 
In this work, we report effect of capping agent on structural and optical properties of Nano crystalline ZnS particle, which have been synthesized by co-precipitation method. The structural properties of ZnS nanoparticles have been characterized by X-ray diffraction (XRD) analysis. The XRD patterns show hexagonal structure in nanoparticles. The mean crystallite size calculated from the XRD patterns has been found in the range of 1.85-2.44 nm with the increase in molar concentration of capping agent. Absorption spectra have been obtained using UV-Vis spectrophotometer to find the optical direct band gap. The obtained values have been founded to being range 3.98-4.34 eV. We also found that optical band gap (E g) increases with the increase in molar concentration of capping agent. This behavior is related to size quantization effect due to the small size of the particles.
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REFERENCES

References: 

1] Alivisatos A P (1996) Semiconductor Clusters, Nanocrystals, and
Quantum Dots. Science 271, 933-937.
[2] Anderson M A, Gorer S and Penner R M (1997) A Hybrid
Electrochemical/Chemical Synthesis of Supported, Luminescent
Cadmium Sulfide Nanocrystals, J. Phys. Chem. B 101, 5895.
[3] Dios M de, Barroso F, Tojo C, Blanco M C and Lopez-Quintela M A
(2005) Effects of the reaction rate on the size control of nanoparticles
synthesized in microemulsions. Colloids and Surfaces A: Physicochem.
Eng. Aspects 83, 270–271.
[4] Godfrey-Alig A R, Akbulut M, Golan Y and Israelachvili J (2006)
Forces Between Surfactant Coated ZnS Nanospheres in Dodecane:
Effect of Water. Adv. Funct. Mater. 16, 2127-2134.
[5] Henshaw G, Parkin I P and Shaw G (1996) Convenient, low-energy
synthesis of metal sulfides and selenides; PbE, Ag2E, ZnE, CdE (E = S,
Se). Chem. Commun. 10, 1095-1096.
[6] Hirai T, Bando Y and Komasawa I (2002) Immobilization of CdS
Nanoparticles Formed in Reverse Micelles onto Alumina Particles and
Their Photocatalytic Properties. J. Phys. Chem. B 106, 8967-8970.
[7] Landes C F, Braun M, El-Sayed M A (2001) On the Nanoparticle to
Molecular Size Transition:  Fluorescence Quenching Studies. J. Phys.
Chem. B 105, 10554–10558.
[8] Liu C M, Zu X T, Wei Q M, Wang L M (2006) Fabrication and
characterization of wire-like SnO2. J. Phys. D: Appl. Phys. 39, 2494.
[9] Prabhu RR and Abdul Khadar M (2005) Characterization of chemically
synthesized CdS nanoparticles. Pramana- J. Phys. 5, 801.
[10] Rahdar A, Asnaasahri Eivari H and Sarhaddi R (2012) Study of
structural and optical properties of ZnS:Cr nanoparticles synthesized by
co-precipitation method. Indian Journal of Science and Technology 5,
1855-1858.
[11] Rajeswar K, Tacconi N R and Chenthamarakshan C R (2001)
Semiconductor-Based Composite Materials:  Preparation, Properties,
and Performance. Chem. Mater. 13, 2765.
[12] Rossetti R, Ellison J L, Gibson J M and Brus L E (1984) Size effects in
the excited electronic states of small colloidal CdS crystallites J. Chem
Phys. 80, 4464.
[13] Sang W, Qian Y, Min J, Li D, Wang L, Shi W and Liu Yi (2002)
Microstructural and optical properties of ZnS:Cu nanocrystals prepared
by an ion complex transformation method. Solid State Commun. 121,
475-478.
[14] Scherrer P (1918) Bestimmung der Grösse und der inneren Struktur
von Kolloidteilchen mittels Röntgenstrahlen. Nachr. Ges. Wiss.
Göttingen 26, 98-100.
[15] Tauc J, (1966) Optical Properties of Solids Academic Press Inc, New
York.
[16] Wageh S, Ling Z S and Xu-Rong Xu (2003) Growth and optical
properties of colloidal ZnS nanoparticles. J. Cryst. Growth 255, 332-337.
[17] Zhai Q, Li J, Lewis J S, Waldrip K A, Jones K, Holloway P.H,
Davidson Ma and Evans. N (2002) Microstructure and
electroluminescence of ZnS:Mn doped with KCl. Thin Solid Films 414,
105-112.
[18] Zhu H, Yang D, Yu G, Zhang H and Yao K (2006) A simple
hydrothermal route for synthesizing SnO2 quantum dots.
Nanotechnology 17, 2386.

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