Biomass-derived N-doped Carbon Dots/TiO2 for Visible-Light-Induced Degradation of Methyl Orange in Wastewater

• Published in: Chemistry Africa Vol. 7; no. 6; pp. 3319 - 3328
• Main Authors: Marpongahtun, Andriayani, Muis, Yugia, Gea, Saharman, Amaturrahim, Suci Aisyah, Attaurrazaq, Boy, Daulay, Amru, Salmiati, Salmiati
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-08-2024
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Inorganic Chemistry; Organometallic Chemistry; Original Article; Carbon dots; Methyl orange degradation; Titanium dioxide; Hydrothermal; Photocatalysis
• ISSN: 2522-5758; 2522-5766
• DOI: 10.1007/s42250-024-00970-x

A facile hydrothermal technique prepared n-doped carbon dots/titanium dioxide (N-CDs/TiO
2
) for visible light photocatalysis of dye in wastewater. Several instruments, such as XRD, TEM, BET, UV-VIS, and PL, analyzed the produced. The results confirmed that N-CDs were successfully embedded on the TiO
2
surface. The diffractogram N-CDs/TiO
2
shows the formation of TiO
2
and amorphous carbon. The N-CDs/TiO
2
also shows an adsorption peak at 1630 cm
− 1
, indicating the formation of TiO
2
. The specific surface area and pore volume of N-CDs/TiO
2
nanocomposites were 7.75 m
2
/g and 0.02 cm
3
/g. The pore size was 6.74 nm. TEM images indicate that TiO
2
has been embedded on the surface of the N-CDs. The PL spectra indicate that the presence of N-CDs significantly increases the absorbance of N-CDs/TiO
2
in the visible light range and emits visible light at nearly 500 nm. The optimum percentage of methylene orange (MO) degradation with nanocomposites reached 62.5% within 20 min. N-CDs/TiO
2
can be used as a photocatalyst to degrade MO. N-CDs/TiO
2
can be used to produce MO-polluted wastewater purification.