Synthesis and characterization of carbonaceous-based nanomaterials produced in chemical vapor deposition (CVD) using copper catalyst

Saraswati, Teguh Endah; Priyanti, Ayu Dwi; Prasiwi, Oktaviana Dewi Indah

doi:10.1063/5.0005445

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…1b). The sharp peak indicated that CQD conformation was graphitic crystal structures, corresponding to (002) planes of CQDs, which thus indicated that CQDs with amorphous structure and crystalline carbon core had been successfully synthesized (Saraswati et al, 2020). Raman images showed that the CQDs exhibited two peaks at 1360 (D-band) and 1580 cm − 1 (G-bands, Fig.…”

Section: Synthesis and Characterization Of Cqds And Lc@cqdsmentioning

confidence: 95%

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Excellent optical, flexible, and mechanical properties of cellulose liquid crystal films induced by carbon quantum dots

Zhao

Feng

Kang

et al. 2023

Preprint

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Recently, cellulose liquid crystals (LCs) have received attention due to their unique photophysical properties. However, their fragility and single structural color mode (birefringence) restricts their further development. Herein, a flexible optoelectronic LC film was reported composed of carbon quantum dots (CQDs) and cellulose nanocrystals (CNCs) produced by evaporation-induced self-assembly (EISA). Due to weak interactions between CQDs and CNCs, the optimal tensile strength and curvature reached 65.5 MPa and 2×102, respectively, thereby solving the fragility of LC films. In addition, these products retained not only the structural color of cellulose LC in the birefringent mode, but also introduced fluorescence in the CQD ultraviolet excitation mode. This was conducive for improving anticounterfeiting performance. Related work also addressed the issue of cellulosic LC fragility and provided a new method.

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Section: Synthesis and Characterization Of Cqds And Lc@cqdsmentioning

confidence: 95%

“…1c). The ratio of these CQDs was < 1, which indicated a good degree of graphitization (Saraswati et al, 2020).…”

Section: Synthesis and Characterization Of Cqds And Lc@cqdsmentioning

confidence: 98%

Excellent optical, flexible, and mechanical properties of cellulose liquid crystal films induced by carbon quantum dots

Zhao

Feng

Kang

et al. 2023

Preprint

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Excellent optical, flexible, and mechanical properties of chiral cellulose nanocrystal films for structural coloration and fluorescent anti-counterfeiting applications

Zhao,

Feng,

Yang

et al. 2023

Journal of Luminescence

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Preparation, Purification, and Hydrophilization of Magnetic-Carbon Nanofibers

Saputri,

Saraswati,

Raharjo

et al. 2024

NHC

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This study aims to synthesize, purify, and modify magnetic carbon nanofibers (Mag-CNF) into hydrophilic carbon material. The synthesis method was carried out by chemical vapor deposition (CVD) using the catalyst from Incolloy at 800°C with argon, nitrogen, hydrogen, and acetylene gases. The purification of Mag-CNF was then conducted by dissolving Mag-CNF with toluene and ethanol, followed by vacuum annealing. The hydrophilization of Mag-CNF was further performed by adding amine groups via reacting Mag-CNF with ethylene diamine, NaNO2, and H2SO4. The successfully prepared Mag-CNF has characteristics of tubular tube bundles consisting of carbon nanofibers with an average diameter of 100-120 nm. The X-ray diffraction (XRD) profile shows the characteristics of carbon, iron, iron oxide, and iron carbide. The Raman spectra show the existence of D, G, and G' bands corresponding to the characteristics of carbon nanomaterials. The magnetic property characterization using a vibration sample magnetometer (VSM) shows the synthesized product as ferrimagnetic materials. The modification results show the addition of hydrophilic groups to Mag-CNF, such as O–H and N–H groups, as analyzed in Fourier Transform Infrared (FTIR) spectra. The successful hydrophilization was also visually confirmed using a dispersion test in water, showing that Mag-CNF has better dispersion after surface modification.

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Synthesis and characterization of carbonaceous-based nanomaterials produced in chemical vapor deposition (CVD) using copper catalyst

Cited by 3 publications

References 12 publications

Excellent optical, flexible, and mechanical properties of cellulose liquid crystal films induced by carbon quantum dots

Excellent optical, flexible, and mechanical properties of cellulose liquid crystal films induced by carbon quantum dots

Excellent optical, flexible, and mechanical properties of chiral cellulose nanocrystal films for structural coloration and fluorescent anti-counterfeiting applications

Preparation, Purification, and Hydrophilization of Magnetic-Carbon Nanofibers

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