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- Title
Silicon-Doped Carbon Dots Crosslinked Carboxymethyl Cellulose Gel: Detection and Adsorption of Fe 3+.
- Authors
Zhao, Zhengdong; Jing, Yichang; Shen, Yuan; Liu, Yang; Wang, Jiaqi; Ma, Mingjian; Pan, Jiangbo; Wang, Di; Wang, Chengyu; Li, Jian
- Abstract
The excessive emission of iron will pollute the environment and harm human health, so the fluorescence detection and adsorption of Fe3+ are of great significance. In the field of water treatment, cellulose-based gels have attracted wide attention due to their excellent properties and environmental friendliness. If carbon dots are used as a crosslinking agent to form a gel with cellulose, it can not only improve mechanical properties but also show good biocompatibility, reactivity, and fluorescence properties. In this study, silicon-doped carbon dots/carboxymethyl cellulose gel (DCG) was successfully prepared by chemically crosslinking biomass-derived silicon-doped carbon dots with carboxymethyl cellulose. The abundant crosslinking points endow the gel with excellent mechanical properties, with a compressive strength reaching 294 kPa. In the experiment on adsorbing Fe3+, the theoretical adsorption capacity reached 125.30 mg/g. The introduction of silicon-doped carbon dots confers the gel with excellent fluorescence properties and a good selective response to Fe3+. It exhibits a good linear relationship within the concentration range of 0–100 mg/L, with a detection limit of 0.6595 mg/L. DCG appears to be a good application prospect in the adsorption and detection of Fe3+.
- Subjects
SILICON compounds; ADSORPTION (Chemistry); CARBOXYMETHYLCELLULOSE; CARBON nanodots; IRON compounds; MECHANICAL behavior of materials
- Publication
Gels (2310-2861), 2024, Vol 10, Issue 5, p285
- ISSN
2310-2861
- Publication type
Article
- DOI
10.3390/gels10050285