Synthesis of Mn doped ZnS nanocrystals: Crystallographic and morphological study

2018 ◽  
Author(s):  
Azharuddin Z. Shaikh ◽  
Narendra B. Shirsath ◽  
Prabhakar S. Sonawane
Keyword(s):  
Morphological Study ◽  
Zns Nanocrystals ◽  
Mn Doped

scholarly journals Fast and Effective Catalytic Degradation of an Organic Dye by Eco-friendly Capped ZnS and Mn doped ZnS nanocrystals

2021 ◽  
Author(s):  
Sabri Ouni ◽  
Naim Bel Haj Mohamed ◽  
Noureddine Chaaben ◽  
Adrian Bonilla-Petriciolet ◽  
Mohamed Haouari
Keyword(s):  
Statistical Physics ◽  
Thioglycolic Acid ◽  
Dye Degradation ◽  
Low Cost ◽  
Quantum Confinement Effect ◽  
Dye Adsorption ◽  
Blue Shift ◽  
Order Kinetic ◽  
Zns Nanocrystals ◽  
Mn Doped

Abstract Undoped and Mn-doped ZnS nanocrystals encapsulated with thioglycolic acid were synthetized and characterized with different techniques, and finally tested in the photodegradation of a methyl orange in aqueous solution under UV and sunlight irradiations. FTIR and X-ray diffraction results confirmed the functionalization of these nanocrystals surface by thioglycolic acid and the formation of crystalline structures of ZnS and Mn-doped ZnS with cubic and hexagonal phases. Calculated average size of ZnS nanocrystals was in the range of 2 - 3 nm. It was observed a blue shift of the absorbance threshold and the estimated bandgap energies were higher than that of Bulk ZnS thus confirming the quantum confinement effect of charge carriers. Photoluminescence spectra of ZnS nanocrystals exhibited emission in the range of 410- 490 nm and the appearance of an additional emission band around 580 nm (2.13eV) connected to the 4𝑇1→ 6𝐴1 transition of the Mn2+ions. Photodegradation of methylene orange with undoped and Mn-doped ZnS-TGA nanocrystals was investigated. Dye adsorption prior to photocatalysis using nanocrystals was studied via kinetic experiments and statistical physics models. The maximum dye adsorption capacity on doped ZnS-TGA was ~ 26.98 mg/g. The adsorption kinetic was found to follow the pseudo-second-order kinetic model.According to the statistical physics results, the calculated adsorption energy was 22.47-23.47 kJ/mol and it showed that the dye adsorption was associated to the hydrogen interaction where the removal process was feasible and multi-molecular. The photocatalytic activity of undoped ZnS nanoparticles under UV irradiation showed better efficiency than doped nanocrystals thus indicating that manganese doping generated a dropping of the photocatalytic degradation of the dye. Dye degradation efficiency of 81.37% using ZnS-TGA nanocrystals was achieved after 6 min, which indicated that ZnMnS-TGA nanocrystals may be considered as an alternative low cost and environmental friendly material for facing water pollution caused by organic compounds via photodegradation processes.

Photophysical Properties of Mn-Doped InP/ZnS Nanocrystals

2021 ◽  
Vol 125 (39) ◽  
pp. 21748-21753
Author(s):  
Huan Liu ◽  
Ganlin Shang ◽  
Can Ren ◽  
Yang Gao ◽  
Tingchao He
Keyword(s):  
Photophysical Properties ◽  
Zns Nanocrystals ◽  
Mn Doped

“Flash” synthesis of “giant” Mn-doped CdS/ZnS nanocrystals for high photostability

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 88921-88927 ◽  
Author(s):  
Ruilin Xu ◽  
Chen Liao ◽  
Huichao Zhang ◽  
Bo Huang ◽  
Kai Fan ◽  
...  
Keyword(s):  
White Leds ◽  
Zns Nanocrystals ◽  
Mn Doped

“Flash” synthesis of “giant” Mn-doped CdS/ZnS nanocrystals with high photostability is developed for the application in white LEDs.

Structural and Optical Investigation of Mn-Doped ZnS Nanocrystals

2005 ◽  
pp. 1795-1798
Author(s):  
W.Q. Peng ◽  
S.C. Qu ◽  
G.W. Cong ◽  
Z.G. Wang
Keyword(s):  
Optical Investigation ◽  
Zns Nanocrystals ◽  
Mn Doped

Mn-doped AgZnInS/ZnS nanocrystals (NCs): Effects of Zn etching on the NC optical properties

2022 ◽  
Vol 123 ◽  
pp. 111941
Author(s):  
Bryan Lee ◽  
Tristan Hegseth ◽  
Yusheng Song ◽  
Jialong Zhao ◽  
Xiaoshan Zhu
Keyword(s):  
Optical Properties ◽  
Zns Nanocrystals ◽  
Mn Doped

Mechanoluminescence and thermoluminescence of Mn doped ZnS nanocrystals

2011 ◽  
Vol 131 (10) ◽  
pp. 2089-2092 ◽  
Author(s):  
Ravi Sharma ◽  
D.P. Bisen ◽  
S.J. Dhoble ◽  
N. Brahme ◽  
B.P. Chandra
Keyword(s):  
Zns Nanocrystals ◽  
Mn Doped

Mn-doped Cu-Zn-In-S/ZnS nanocrystals: optical properties and their use as time-gated fluorescence probes

2019 ◽  
Vol 21 (11) ◽  
Author(s):  
Clay Harrison ◽  
Brandon Gallian ◽  
Guoquan Dong ◽  
Yu Wang ◽  
Jialong Zhao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Fluorescence Probes ◽  
Zns Nanocrystals ◽  
Mn Doped

Enhanced luminescence in electrospun polymer hybrids containing Mn-doped ZnSe/ZnS nanocrystals

2021 ◽  
Vol 113 ◽  
pp. 110858
Author(s):  
Tran Thi Thu Huong ◽  
Nguyen Thu Loan ◽  
Dinh Xuan Loc ◽  
Ung Thi Dieu Thuy ◽  
Olya Stoilova ◽  
...  
Keyword(s):  
Polymer Hybrids ◽  
Zns Nanocrystals ◽  
Enhanced Luminescence ◽  
Mn Doped
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