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High-throughput Synthesis of Carbohydrates and Functionalization of Polyanhydride Nanoparticles
Published on: July 6, 2012
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Functionalized nano-starch prepared by surface-initiated atom transfer radical polymerization and quaternization
Qiong Su1, Yanbin Wang1, Xiangfei Zhao1
1Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province, College of Chemical Engineering, Northwest Minzu University, Lanzhou, 730030, PR China.
Carbohydrate Polymers
|December 13, 2019
Summary
Functionalized nano-starch particles effectively remove heavy metals from wastewater. These novel materials offer strong adsorption for chromate and can be easily regenerated, presenting a sustainable solution for water treatment.
Area of Science:
- Materials Science
- Environmental Chemistry
- Polymer Chemistry
Background:
- Heavy metal contamination in wastewater poses significant environmental and health risks.
- Developing efficient and regenerable adsorbents is crucial for effective wastewater treatment.
Purpose of the Study:
- To synthesize and characterize functionalized nano-starch particles for heavy metal adsorption.
- To investigate the impact of synthesis parameters on the properties of the nano-starch derivatives.
- To evaluate the adsorption performance and regenerability of the functionalized nano-starch for chromate removal.
Main Methods:
- Preparation involved nano-processing, halogenated grafting, surface-initiated atom transfer radical polymerization (SI-ATRP), and quaternized modification of native corn starch.
- Characterization utilized Fourier transform-infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H-NMR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM).
- Adsorption studies focused on chromate removal efficiency and the regeneration process of the functionalized nano-starch.
Main Results:
- The synthesis process variables, including hydrolysis time, monomer concentration, CuBr/bpy ratio, and graft copolymerization temperature, influenced the product properties.
- Characterization confirmed the successful functionalization and modification of the nano-starch particles.
- The functionalized nano-starch demonstrated strong adsorption capacity for chromate.
Conclusions:
- Functionalized nano-starch particles are effective agents for wastewater treatment, specifically for chromate removal.
- The developed adsorbent exhibits high adsorption capability and can be almost totally regenerated through a simple process.
- This research offers a promising, sustainable approach to heavy metal remediation in industrial wastewater.
