Photoluminescence properties of carbon nanoparticles synthesized from activated carbon powder (4% ash) by laser ablation in solution

Yogesh, Gaurav Kumar; Shuaib, E.P.; Sastikumar, D.

doi:10.1016/j.materresbull.2017.02.038

Cited by 35 publications

(18 citation statements)

References 25 publications

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“…The UV-vis spectrometer was used to measure the transmission spectrum of the colloidal solution in the 200-1100 nm region (figure 6). Carbon generally exhibits an absorption peak in the range of 180-280 nm [38]. The absorption peak at 266 nm of carbon nanostructures is assigned to the π-π * transition of C=C bond [39].…”

Section: Uv-vis Analysismentioning

confidence: 99%

The synthesis of carbon-based nanomaterials by pulsed laser ablation in water

Ganash

Al-Jabarti

Al-Tuwirqi

2019

Mater. Res. Express

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Pulsed Laser Ablation in liquid (PLAL) is considered as a robust and simple technique for producing nanoparticles (NPs) using lasers. The carbon-based nanoparticles were fabricated via the PLAL approach by irradiating a graphite target with a pulsed Nd:YAG laser of wavelength 532 nm. The graphite target was immersed in distilled water and irradiated for 10 min. The pulse length, reputation rate, and fluence were 6 ns, 10 Hz, and 0.4 J cm −2 , respectively. The structural and physical properties of the synthesized NPs were investigated and analyzed using different characterization methods. For example, Transmission Electron Microscopy (TEM) images revealed diverse carbon nanostructures such as graphene nanosheets, nanospheres, nanospheres in the shape of a necklace, and nanotubes. The spectrum of Energy Dispersive X-Ray spectroscopy (EDX) confirmed successful synthesis of high purity carbon nanostructures. Moreover, the result of X-Ray Diffraction (XRD) Spectroscopy indicated the presence of reduced Graphene Oxide (rGO) with a (002) plane and the absence of Graphene Oxide (GO). The transmission spectrum from Ultraviolet-Visible (UV-vis) analysis showed a strong trough at 266 nm which is attributed to the presence of carbon nanostructures. Furthermore, Fourier-Transform Infrared Spectroscopy (FTIR) analysis demonstrated the vibration bonds related to carbon. The nanostructures produced were semi-stable with little agglomeration as was inferred from the results of the Zeta Potential. Finally, the Dynamic Light Scattering (DLS) analysis supported the TEM results. PLAL technique is proved to be a simple method for producing carbon-based nanomaterials. Moreover, the laser fluence was found to be an important factor which affects greatly the type of nanostructures that could be synthesized during laser ablation.

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Section: Uv-vis Analysismentioning

confidence: 99%

The synthesis of carbon-based nanomaterials by pulsed laser ablation in water

Ganash

Al-Jabarti

Al-Tuwirqi

2019

Mater. Res. Express

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“…Figure 5 demonstrates the UV-Vis spectrum of the CNPs suspension. Generally, CNPs have absorption peaks in the range of 180–280 nm [ 5 ]. According to Figure 5 , three absorption peaks appear at 227 nm, 252 nm, and 260 nm, which are related to the π-π* transition of C=C bonds in CNPs [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

“…Recently, carbon-based nanomaterials, including carbon nanotubes (CNTs), CNPs, and graphene, have been noticed due to their superior properties like high porosity, high adsorption capacity, nontoxicity, adjustable morphology, and simple preparation [ 3 , 4 ]. CNPs with small size, good biocompatibility and chemical stability, high hydrophilicity, and great flexibility show interesting optical properties known as luminescent materials [ 5 , 6 ]. Their great conductivity and electrochemical activity and high surface area have caused to application of them in energy devices like batteries and supercapacitors [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Large Optical Nonlinearity of the Activated Carbon Nanoparticles Prepared by Laser Ablation

et al. 2021

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Carbon nanoparticles (CNPs) with high porosity and great optical features can be used as a luminescent material. One year later, the same group investigated the NLO properties CNPs and boron-doped CNPs by 532 nm and 1064 nm laser excitations to uncover the underlying physical mechanisms in their NLO response. Hence, a facile approach, laser ablation technique, was employed for carbon nanoparticles (CNPs) synthesis from suspended activated carbon (AC). Morphological properties of the prepared CNPs were studied by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). UV-Vis and fluorescence (FL) spectra were used to optical properties investigation of CNPs. The size distribution of nanoparticles was evaluated using dynamic light scattering (DLS). The nonlinear optical (NLO) coefficients of the synthesized CNPs were determined by the Z-scan method. As a result, strong reverse saturable absorption and self-defocusing effects were observed at the excitation wavelength of 442 nm laser irradiation. These effects were ascribed to the presence of delocalized π-electrons in AC CNPs. To the best of our knowledge, this is the first study investigating the NLO properties of the AC CNPs.

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“…Laser ablation of activated carbon (4% ash) in a water/ethanol solution (5:2) was shown by Yogesh et al to from CQDs of 4 nm in size. 44 A one step process based on laser irradiation of a graphite target using the second harmonic beam at 532 nm of the Nd:YAG in H2O/ethanol or diethylenetriaminepentaacetic acid solution for the formation of 3 nm sized CQDs was reported by Tarasenka. 45 The synthesized particles exhibited strong photoluminescence in the visible region.…”

Section: Laser Ablationmentioning

confidence: 99%