Non-toxic chitosan-based hydrogel with strong adsorption and sensitive detection abilities for tetracycline

Antibiotics are classified as a severe cause of water contamination. Therefore, there is a great demand for an efficient and non-toxic adsorbent for antibiotics. In this study, a non-toxic chitosan-based hydrogel (CH) was developed using cellulose nanocrystals (CNs) and carbon dots (CDs). This CH had strong sorption ability (a maximum sorption capacity of 541.3 mg/g) and sensitive detection ability (linear ranges of 0.2–1.0 μg/L and 1–200 mg/L,...