Effects of amino acid capping-agents on the size and morphology and photocatalytic properties of BNCTO nanostructures

Background: Mn doped ZnS is selected as the right element which is prominent among quantum dot for its high luminescent and quantum yield property and also non toxicity while comparing with other organometallic quantum dot synthesized by using different capping agents. Methods: An interesting observation based on colorimetric sensing of dopamine using manganese doped zinc sulfide quantum dot is discussed in this study. Mn doped ZnS quantum dot surface passivated with capping agents such as L-histidine and also in polymers like chitosan, PVA and PVP were studied and compared. The tunable fluorescence effect was also observed in different polymers and amino acid as capping agents. Optical characterization studies like UV-Visible spectroscopy and PL spectroscopy have been carried out. The functional group modification of Quantum dot has been analyzed using FTIR and size and shape analysis was conducted by using HRTEM image. Result: The strong and broad peak of FTIR in the range of 3500-3300 cm-1 confirms the presence of O-H bond. It is also observed that quenching phenomena in the luminescent peak are due to weaker confinement effect. The average size of the particle is shown to be around 4-5 nm. Changes in color of the quantum dot solution from transparent to dark brown has been due to the interaction with dopamine. Conclusion: Finally, L-Histidine amino acid capped Mn:ZnS shows better results in luminescence and size confinement properties. Hence, it was chosen for dopamine sensing due to its colloidal nature and inborn affinity towards dopamine, a neurotransmitter which is essential for early diagnosis of neural diseases

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Influence of capping agents additives on morphology of CeVO4 nanoparticles and study of their photocatalytic properties

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-016-5556-4 ◽

2016 ◽

Vol 28 (1) ◽

pp. 537-542 ◽

Cited By ~ 26

Author(s):

Mehdi Rahimi-Nasrabadi ◽

Farhad Ahmadi ◽

Ali Fosooni

Keyword(s):

Photocatalytic Properties ◽

Capping Agents

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Controllable fabrication of europium tungstate nanoparticles in the presence of new capping agents and investigation of their photocatalytic properties

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-017-7555-5 ◽

2017 ◽

Vol 28 (21) ◽

pp. 16444-16449

Author(s):

Mohammad Javad Enayat

Keyword(s):

Photocatalytic Properties ◽

Capping Agents ◽

Controllable Fabrication

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Amino acid modified combustion synthesis, characterization and investigation of magnetic, optical and photocatalytic properties of Gd2CoMnO6 nanostructures

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2018.04.251 ◽

2018 ◽

Vol 753 ◽

pp. 615-621 ◽

Cited By ~ 9

Author(s):

Reza Mohassel ◽

Azam Sobhani ◽

Mojgan Goudarzi ◽

Masoud Salavati-Niasari

Keyword(s):

Amino Acid ◽

Combustion Synthesis ◽

Photocatalytic Properties

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Amino Acid-Assisted Hydrothermal Synthesis of BiVO4 with Highly Exposed (040) Facets and Enhanced Visible-Light-Driven Photocatalytic Properties

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2017.13800 ◽

2017 ◽

Vol 17 (8) ◽

pp. 5391-5399 ◽

Cited By ~ 5

Author(s):

Ze Wang ◽

Wenjuan Li ◽

Defen Kong ◽

Yong Du ◽

Tingjiang Yan ◽

...

Keyword(s):

Amino Acid ◽

Hydrothermal Synthesis ◽

Visible Light ◽

Photocatalytic Properties ◽

Visible Light Driven

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Morphology Tailoring of Hydroxyapatite Nanoparticles by Hydrothermal Processing with Amino Acids

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.280-283.1533 ◽

2007 ◽

Vol 280-283 ◽

pp. 1533-1536 ◽

Cited By ~ 1

Author(s):

Wei Min Gao ◽

Qun Yan Li ◽

Cheng Xiang Ruan ◽

Yun Fa Chen

Keyword(s):

Amino Acids ◽

Fourier Transform ◽

Amino Acid ◽

Homogeneous Precipitation ◽

Hydrothermal Processing ◽

Hydroxyapatite Nanoparticles ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Size And Morphology

Hydroxyapatite (HAp) was synthesized in the presence of a variety of amino acids in order to investigate the effect of amino acid on the morphology of HAp obtained by homogeneous precipitation and hydrothermal treating. In the results of X-ray diffraction analysis, HAp synthesized in the presence of some amino acids showed different crystallinity compared with HAp synthesized in the absence of amino acid. The results of Fourier transform infrared spectroscopy suggested the adsorption of these amino acids on HAp. Microphotographs of transmission electron microscope showed that the size and morphology of HAp adsorbed amino acids changed significantly. Collectively, this study suggests that the morphology and the crystallinity of synthesized HAp are different owing to the variation of amino acids in the synthesizing condition.

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