Carbon nanodots from watermelon peel as CO2 absorbents in biogas

Dwandaru, Wipsar Sunu Brams; Sari, Emi Kurnia; Widyawidura, Wira; Khaerudini, Deni Shidqi; Pratidhina, Elisabeth; Agustin, Melissa B.; Purnamasari, Listya; Silfiyani, W.; Yongga, T.A.

doi:10.32434/0321-4095-2021-137-4-41-49

Cited by 8 publications

(2 citation statements)

References 15 publications

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“…The Cdots were prepared by low heating method by adapting the procedure designed by Dwandaru et al [26] with some modifications as needed. CJO distillation wastes were heated in an oven (Mitseda Electric) for 2 hours at a temperature of 250 • C to become carbon or charcoal.…”

Section: Preparation Of Cdots From Cjo Wastesmentioning

confidence: 99%

Measuring the refraction index of luminescent carbon nanodots forming Gaussian beam using the tracker software

Dwandaru,

Zulaikha,

Sulaindra

et al. 2024

Rev. Mex. Fis. E

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Nanotechnology is currently regarded as one of the fastest-growing technologies. Equipping students with some understanding of nanotechnology in relation to physics ideas may trigger their interest and inspire them to learn physics. This study is aimed to measure the refraction index of Cdots solution using the Gaussian beam and Tracker software. The method used in this research is quantitative descriptive method with the stages of research that include designing, construction, developing, and testing the measuring instrument. The procedure in this study begins by preparing the Cdots solution from cajuput oil (CJO) distillation wastes. The Cdots are then characterized using the UV-visible (UV-Vis), photoluminescence (PL), time resolved-PL (TRPL), and Fourier transform infrared (FTIR) spectroscopies. The Cdots solution is then put into a reaction tube with solution height variation. The violet/UV laser pointer is exposed upward towards the Cdots solution from the bottom of the reaction tube producing a Gaussian beam inside the reaction tube. The Gaussian beam is then photographed, which then the format is converted into a video format. The video format of the Gaussian beam is analyzed using the Tracker software. The characterizations of the Cdots show i) an absorption peak at a wavelength of 216.0 nm, ii) an emission peak at 512.29 nm indicating cyan luminescence, iii) an electronic lifetime of 51.3 ns, and iii) functional groups of O-H; C=C; and C=O. Moreover, the Gaussian beams are formed for various heights of the Cdots solution, i.e.: from 5.364 cm to 13.000 cm. Using the Tracker software, the value of the Cdots’ refraction index is 1.29 0.03, which is comparable to the refraction index of water. This measuring instrument has the potential to be used in high school physics classes and/or first-year university physics courses.

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Section: Preparation Of Cdots From Cjo Wastesmentioning

confidence: 99%

Measuring the refraction index of luminescent carbon nanodots forming Gaussian beam using the tracker software

Dwandaru,

Zulaikha,

Sulaindra

et al. 2024

Rev. Mex. Fis. E

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“…The different absorption and emission characteristics are shown by Carbon Dots, which are made of watermelon peel. The carbon dots show absorbance and emission peaks at wavelengths of 203.5 nm and 405 nm, respectively [10]. Nonetheless, Guo et.…”

Section: Characterizations Of Carbon Dotsmentioning

confidence: 99%

Effect of carbon dots nanomaterial concentration on luminance spectral bandwidth via Kirchoff-Bunsen spectroscope

Pradana,

Suparno,

Nurbaiti

et al. 2023

Rev. Mex. Fís.

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This study aims to determine the effect of the concentration of Carbon Dots on the bandwidth of the Carbon Dots luminescence spectrum. Carbon Dots are produced by ultrasonification method and characterized using UV-Vis spectroscopy, photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), electron dispersive X-Ray spectroscopy (EDX), X-ray diffraction (XRD), and particle size analyzer (PSA). Measurement of the bandwidth of the Carbon Dots fluorescence spectrum for various concentrations was carried out by irradiating the Carbon Dots sample using a laser with a wavelength of 405 nm and looking at the spectrum of light emitted using a Kirchoff-Bunsen spectroscope.The characterization results show that the resulting Carbon Dots have a light absorption peak at a wavelength of 303 nm, a light wave emission peak at a wavelength of 508.87 nm, the surface structure of the Carbon Dots is in the form of a porous layer, the presence of the dominance of carbon and oxygen atoms in Carbon Dots, an amorphous Carbon Dots structure is observed, and the smallest measured Carbon Dots particle size is 1.12 nm. The results show that increasing the concentration of Carbon Dots causes a tendency to increase the bandwidth of orange, green and blue light spectra emitted by the particles, and in the red color there was no significant effect of increasing the concentration of Carbon Dots on the spectrum. However, increasing the concentration of Carbon Dots actually causes a narrowing of the yellow and violet color spectra.

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Green Synthesis of Carbon Nanodots (CNDs) Moderated by Flavonoid Extracts from Moringa oleifera Leaves and Co-Doped Sulfur/Nitrogen (NS – CNDs – Fla) and Their Potential for Heavy Metals Sensing Application

Wahyudi,

Rizoputra,

Panatarani

et al. 2024

J Fluoresc

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Carbon nanodots from watermelon peel as CO2 absorbents in biogas

Cited by 8 publications

References 15 publications

Measuring the refraction index of luminescent carbon nanodots forming Gaussian beam using the tracker software

Measuring the refraction index of luminescent carbon nanodots forming Gaussian beam using the tracker software

Effect of carbon dots nanomaterial concentration on luminance spectral bandwidth via Kirchoff-Bunsen spectroscope

Green Synthesis of Carbon Nanodots (CNDs) Moderated by Flavonoid Extracts from Moringa oleifera Leaves and Co-Doped Sulfur/Nitrogen (NS – CNDs – Fla) and Their Potential for Heavy Metals Sensing Application

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