Growth of CdS nanoparticles on the aligned carbon nanotubes

Okotrub, A. V.; Asanov, I. P.; Ларионов, С. В.; Kudashov, A. G.; Leonova, T. G.; Bulusheva, L. G.

doi:10.1039/c000189a

Cited by 25 publications

(22 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the CdS@50G@TiO2 sample, Cd exhibits similar peaks to the pure CdS sample, however, the intensity is comparably lower indicative of the core-shell nanostructure of the CdS@50G@TiO2 sample. The intensity of the minor component at high binding energy is comparatively larger for the core-shell structure likely due to the interaction of Cd with oxygen-containing groups on the graphene [46]. Figure 4b represents the XPS spectra of S 2p region for pure CdS and CdS@50G@TiO2, where the S 2p peaks have binding energies around 161.4 eV and 162.6 eV, respectively, in agreement with literature values [47].…”

Section: Surface Analysissupporting

confidence: 83%

Core-Shell Nanostructures of Graphene-Wrapped CdS Nanoparticles and TiO2 (CdS@G@TiO2): The Role of Graphene in Enhanced Photocatalytic H2 Generation

et al. 2020

View full text Add to dashboard Cite

Aiming to achieve enhanced photocatalytic activity and stability toward the generation of H2 from water, we have synthesized noble metal-free core-shell nanoparticles of graphene (G)-wrapped CdS and TiO2 (CdS@G@TiO2) by a facile hydrothermal method. The interlayer thickness of G between the CdS core and TiO2 shell is optimized by varying the amount of graphene quantum dots (GQD) during the synthesis procedure. The most optimized sample, i.e., CdS@50G@TiO2 generated 1510 µmole g−1 h−1 of H2 (apparent quantum efficiency (AQE) = 5.78%) from water under simulated solar light with air mass 1.5 global (AM 1.5G) condition which is ~2.7 times and ~2.2 time superior to pure TiO2 and pure CdS respectively, along with a stable generation of H2 during 40 h of continuous operation. The increased photocatalytic activity and stability of the CdS@50G@TiO2 sample are attributed to the enhanced visible light absorption and efficient charge separation and transfer between the CdS and TiO2 due to incorporation of graphene between the CdS core and TiO2 shell, which was also confirmed by UV-vis, photoelectrochemical and valence band XPS measurements.

show abstract

Section: Surface Analysissupporting

confidence: 83%

Core-Shell Nanostructures of Graphene-Wrapped CdS Nanoparticles and TiO2 (CdS@G@TiO2): The Role of Graphene in Enhanced Photocatalytic H2 Generation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The peak at 161.7 eV corresponds to the S 2p core levels of CdS and is also in agreement with reported values 7k. The other peak at 168.5 eV is attributed to oxidized sulfur from sulfate groups,26 which is consistent with the FTIR data presented above. The interaction between the CdS nanophases and the carbon substrates seems to occur through Cd–O bonds.…”

Section: Resultssupporting

confidence: 88%

Decoration of Carbon Nanostructures with Metal Sulfides by Sonolysis of Single‐Molecule Precursors

2014

View full text Add to dashboard Cite

Carbon nanostructures have emerged in recent decades as uniquely convenient materials for a number of technologies. Some of their envisaged applications require hybrid nanostructures that result from the coupling of semiconducting phases to the carbon materials. Here, we describe a new sonochemical method to decorate carbon‐based materials (multiwalled carbon nanotubes, graphene oxide, and graphite flakes) with metal sulfide nanophases. In this research, we have used a CdII alkyldithiocarbamate complex as a single source to produce CdS nanophases that nucleate and grow over the carbon substrates. However, other metal sulfides can be produced by a similar methodology, which paves the way to a scalable method for the preparation of hybrid metal sulfide/carbon nanomaterials.

show abstract

“…CdS nanoparticles were deposited on CNT array samples using a chemical bath procedure described in Ref. . A solution of thiourea (NH 2 ) 2 CS (0.3 mol L −1 ) was prepared in a glass using 100 ml of the aqueous solution of ammonia NH 3 (70.3 g L −1 ).…”

Section: Methodsmentioning

confidence: 99%

Photoluminescence of CdS nanoparticles grown on carbon nanotubes covered by a dielectric polymer layer

Окотруб

Kanygin

Bulusheva

et al. 2013

Phys. Status Solidi B

Self Cite

View full text Add to dashboard Cite

Photoluminescence (PL) properties of CdS nanoparticles were studied depending on spacing between the nanoparticles and carbon nanotube (CNT) surface. Using a chemical bath deposition procedure the nanoparticles were grown directly on CNT arrays or arrays covered by a polystyrene layer. The polymer thickness was changed by varying the polystyrene concentration in a solution and the duration of CNT immersing. Transmission electron microscopy and atomic force microscopy were used for estimation of CdS nanoparticle size. An increase in the separation between CdS and CNTs was found to enhance the PL intensity and contribute to the exciton lifetime.PL spectra of CdS nanoparticles grown on a CNT surface and polystyrene layer coating the CNTs.

show abstract

Growth of CdS nanoparticles on the aligned carbon nanotubes

Cited by 25 publications

References 23 publications

Core-Shell Nanostructures of Graphene-Wrapped CdS Nanoparticles and TiO2 (CdS@G@TiO2): The Role of Graphene in Enhanced Photocatalytic H2 Generation

Core-Shell Nanostructures of Graphene-Wrapped CdS Nanoparticles and TiO2 (CdS@G@TiO2): The Role of Graphene in Enhanced Photocatalytic H2 Generation

Decoration of Carbon Nanostructures with Metal Sulfides by Sonolysis of Single‐Molecule Precursors

Photoluminescence of CdS nanoparticles grown on carbon nanotubes covered by a dielectric polymer layer

Contact Info

Product

Resources

About