Fluorescent recognition of Fe³⁺ in acidic environment by enhanced-quantum yield N-doped carbon dots: optimization of variables using central composite design.

ABSTRACT: A versatile synthetic approach for development of highly fluorescent nitrogen-doped carbon dots (N-CDs) from carboxymethylcellulose in the presence of linear polyethyleneimine (LPEI) has been developed. According to single factor method, central composite design incorporated with response surface methodology matrix was applied to find and model optimal conditions for the temperature (220-260 °C), duration (1-3 h) and LPEI weight (0.5-1.5%). The statistical results show that duration was the most significant parameter for efficient carbonization conversion rate in comparison with temperature and LPEI weight. The reduced cubic model (R² = 0.9993) shows a good correlation between the experimental data and predicted values. The optimal variables were temperature of 260 °C, duration

SUBMITTER: Issa MA 

PROVIDER: S-EPMC7366660 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature