Green wet chemical route to synthesize capped CdSe quantum dots

Oudhia, Anjali; Bichpuria, P

doi:10.1007/s12034-014-0614-0

Cited by 7 publications

(6 citation statements)

References 16 publications

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“…The CdSe QDs were synthesized via green wet chemical method . Cadmium acetate (CdAc) and sodium seleno sulfate (Na 2 SeSO 3 ) were used for Cd and Se precursors, respectively.…”

Section: Methodsmentioning

confidence: 99%

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Heterostructured Au NPs/CdS/LaBTC MOFs Photoanode for Efficient Photoelectrochemical Water Splitting: Stability Enhancement via CdSe QDs to 2D-CdS Nanosheets Transformation

Vaddipalli

Sanivarapu

Vengatesan

et al. 2016

ACS Appl. Mater. Interfaces

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The electrochemical stability of MOFs in aqueous medium is most essential for MOFs based electrocatalysts for hydrogen production via water splitting. Since most MOFs suffer from instability issues in aqueous systems, there is enormous demand for electrochemically stable MOFs catalysts. Herein, we have developed a simple postsynthesis surface modification protocol for La (1,3,5-BTC) (H2O)6 metal-organic frameworks (LaBTC MOFs) using Mercaptopropionic acid (MPA), to attain electrochemical stability in aqueous mediums. The MPA treated LaBTC MOFs exhibited better stability than the bare LaBTC. Further, to facilitate light harvesting properties of LaBTC MOFs, Au nanoparticles (NPs) and CdSe quantum dots (QDs) are functionalized on LaBTC. The sensitization of LaBTC with Au NPs and CdSe QDs enhances the light harvesting properties of LaBTC in the visible region of solar spectrum. Using as a photoanode, the electrode generates the current density of ∼80 mA/cm(2) at 0.8 V (vs Ag/AgCl) during photoelectrochemical water splitting. The heterostructured LaBTC photoanode demonstrates the long-term stability for the period of 10 h. The electrode post-mortem analysis confirms the conversion of CdSe QDs into single crystalline 2D-CdS nanosheets. The present investigation reveals that CdS nanosheets together with SPR Au NPs improve the photoelectrochemical water splitting activity and stability of LaBTC MOFs.

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“…The CdSe QDs were synthesized via green wet chemical method . Cadmium acetate (CdAc) and sodium seleno sulfate (Na 2 SeSO 3 ) were used for Cd and Se precursors, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The CdSe QDs were synthesized via green wet chemical method. 28 Cadmium acetate (CdAc) and sodium seleno sulfate (Na 2 SeSO 3 ) were used for Cd and Se precursors, respectively. First, 5 g of sodium sulphite (Na 2 SO 3 ) was dissolved in 25 mL of deionized water.…”

Section: Methodsmentioning

confidence: 99%

Heterostructured Au NPs/CdS/LaBTC MOFs Photoanode for Efficient Photoelectrochemical Water Splitting: Stability Enhancement via CdSe QDs to 2D-CdS Nanosheets Transformation

Vaddipalli

Sanivarapu

Vengatesan

et al. 2016

ACS Appl. Mater. Interfaces

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“…The CdSe QDs were synthesized using green synthesis employing chemical bath deposition (CBD) method [37]. Here the sources of Cd and Se are Cadmium acetate (CdAc) and sodium seleno sulphate (Na 2 SeSO 3 ) respectively.…”

Section: Synthesis Of Cdse Qds:-mentioning

confidence: 99%

Photo-Catalytic Behavior of Cdse QDS Sensitized Zr-(1,3,5-Benzene Tricarboxylic Acid) Metal-Organic Frameworks.

Gonthina¹,

Sreedhar²,

Rao³

2017

IJAR

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“…12 Consequently CdSe became one of the most studied semiconductor materials. For instance, anacardic acid, 23 tartaric acid/ triethanolamine, 24,25 olive oil 26,27 and glycerol/oleic acid 28 have been used as green solvents and capping agents in synthetic routes to stabilize CdSe nanocrystals. The behaviour and toxicity inference of nanoparticles mainly comes from studies on inhaled nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the green protocols involve the replacement of toxic capping agents and solvents with non-toxic naturally occurring materials. For instance, anacardic acid, 23 tartaric acid/ triethanolamine, 24,25 olive oil 26,27 and glycerol/oleic acid 28 have been used as green solvents and capping agents in synthetic routes to stabilize CdSe nanocrystals. Therefore the green protocols for the fabrication of CdSe QDs (nanocrystals) using naturally occurring bio-based substances as solvents and capping agents can be considered as a very promising and attractive area in nanotechnology.…”

Section: Introductionmentioning

confidence: 99%

CdSe quantum dots capped with naturally occurring biobased oils

et al. 2015

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We report a green synthesis of CdSe quantum dots (QDs) using bio-based materials (castor oil and ricinoleic acid) as capping agents. The absorption spectra of the as-synthesized CdSe QDs showed typical features of quantum confinement. The particle sizes of QDs were determined using the absorption band edges and found to be 3.81 to 6.80 nm and 5.91 to 8.31 nm for the entire range of reaction temperatures for QD-capped with castor oil (CSTO) and ricinoleic acid (RA), respectively. The photoluminescence spectra showed narrow emission peaks. The transmission electron microscopy (TEM) images showed spherical particles with sizes comparable to those determined from the absorption spectra. Comparatively, large particles were observed for RA capped CdSe QDs than those stabilized by CSTO. X-ray diffraction patterns revealed that the synthesized CdSe quantum dots have cubic structure. The particle sizes of CdSe deduced from X-ray diffraction measurements were in excellent agreement with those deduced from absorption spectra and TEM images. The d-spacings from the HRTEM images were consistent with those reported in literature. The surface area and the agglomeration number for as-synthesized CdSe QDs of different sizes are also reported.

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Green wet chemical route to synthesize capped CdSe quantum dots

Cited by 7 publications

References 16 publications

Heterostructured Au NPs/CdS/LaBTC MOFs Photoanode for Efficient Photoelectrochemical Water Splitting: Stability Enhancement via CdSe QDs to 2D-CdS Nanosheets Transformation

Heterostructured Au NPs/CdS/LaBTC MOFs Photoanode for Efficient Photoelectrochemical Water Splitting: Stability Enhancement via CdSe QDs to 2D-CdS Nanosheets Transformation

Photo-Catalytic Behavior of Cdse QDS Sensitized Zr-(1,3,5-Benzene Tricarboxylic Acid) Metal-Organic Frameworks.

CdSe quantum dots capped with naturally occurring biobased oils

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