Synthesis and Characterization of Optical Properties of Carbon Quantum Dots (CQD) Based on Mustard Green (Brassica juncea L) Leaf with Urea Addition. Jurnal Kimia Valensi, [S. l.], v. 9, n. 2, p. 253–260, 2023. DOI: 10.15408/jkv.v9i2.34164. Disponível em: https://journal.uinjkt.ac.id/valensi/article/view/34164. Acesso em: 20 nov. 2025.