Doping Ultrasmall Cubic ZnS Nanocrystals with Mn2+ Ions over a Broad Nominal Concentration Range

2015 ◽  
Vol 119 (41) ◽  
pp. 23781-23789 ◽  
Author(s):  
Sergiu V. Nistor ◽  
Mariana Stefan ◽  
Leona C. Nistor ◽  
Daniela Ghica ◽  
Ioana D. Vlaicu ◽  
...  
Keyword(s):  
Nominal Concentration ◽  
Zns Nanocrystals

scholarly journals Fast T-Type Photochromism of Colloidal Cu-Doped ZnS Nanocrystals

2021 ◽  
Vol 143 (5) ◽  
pp. 2239-2249
Author(s):  
Yulian Han ◽  
Morihiko Hamada ◽  
I-Ya Chang ◽  
Kim Hyeon-Deuk ◽  
Yasuhiro Kobori ◽  
...  
Keyword(s):  
Zns Nanocrystals

Fluorescence and EPR Characteristics of Mn2+-Doped ZnS Nanocrystals Prepared by Aqueous Colloidal Method

1999 ◽  
Vol 103 (5) ◽  
pp. 754-760 ◽  
Author(s):  
N. Murase ◽  
R. Jagannathan ◽  
Y. Kanematsu ◽  
M. Watanabe ◽  
A. Kurita ◽  
...  
Keyword(s):  
Colloidal Method ◽  
Zns Nanocrystals

High impact of thiol capped ZnS nanocrystals on the degradation of single and binary aqueous solutions of industrial azo dyes under sunlight

2021 ◽  
pp. 105915
Author(s):  
Sabri Ouni ◽  
Naim Bel Haj Mohamed ◽  
Mohamed Bouzidi ◽  
Adrian Bonilla-Petriciolet ◽  
Mohamed Haouari
Keyword(s):  
Aqueous Solutions ◽  
Azo Dyes ◽  
High Impact ◽  
Zns Nanocrystals

scholarly journals Blue light emitting diodes based on fluorescent CdSe∕ZnS nanocrystals

2007 ◽  
Vol 90 (5) ◽  
pp. 051106 ◽  
Author(s):  
Aurora Rizzo ◽  
Yanqin Li ◽  
Stefan Kudera ◽  
Fabio Della Sala ◽  
Marco Zanella ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Zns Nanocrystals

scholarly journals Preparation of photoluminescence tunable Cu-doped AgInS2 and AgInS2/ZnS nanocrystals and their application as cellular imaging probes

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51161-51170 ◽  
Author(s):  
Siqi Chen ◽  
Violeta Demillo ◽  
Minggen Lu ◽  
Xiaoshan Zhu
Keyword(s):  
Cellular Imaging ◽  
Imaging Probes ◽  
Zns Nanocrystals

Photoluminescence tunable Cu-doped AgInS2 and AgInS2/ZnS nanocrystals were synthesized and applied in cellular imaging.

Probing the role of nickel dopant in aqueous colloidal ZnS nanocrystals for efficient solar-driven CO2 reduction

2019 ◽  
Vol 244 ◽  
pp. 1013-1020 ◽  
Author(s):  
Hong Pang ◽  
Xianguang Meng ◽  
Hui Song ◽  
Wei Zhou ◽  
Gaoliang Yang ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Zns Nanocrystals

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.

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