Publications by authors named "Guanzhi Ding"
A Magnetic Photocatalytic Composite Derived from Waste Rice Noodle and Red Mud.
Nanomaterials (Basel)
December 2024
This study is the first to convert two waste materials, waste rice noodles (WRN) and red mud (RM), into a low-cost, high-value magnetic photocatalytic composite. WRN was processed via a hydrothermal method to produce a solution containing carbon quantum dots (CQDs). Simultaneously, RM was dissolved in acid to form a Fe ion-rich solution, which was subsequently mixed with the CQDs solution and underwent hydrothermal treatment.
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- This study shows how waste rice noodles can be turned into a low-cost activated carbon material loaded with nano-silver that effectively adsorbs contaminants and kills bacteria.
- The materials are created by first converting the noodles into hydrothermal carbon, then combining it with silver nitrate and sodium hydroxide, and finally activating it through high-temperature calcination.
- The resulting composite exhibits a high surface area and significant adsorption ability for heavy metals, specifically Cr(VI), and demonstrates strong antibacterial effects against common pathogens.
Article Synopsis
- Developed an economical magnetic photocatalyst using discarded waste rice noodle (WRN) and iron oxide scale (IOS) by converting WRN into carbon quantum dots (CQDs) and calcining IOS for iron oxide (FeO).
- The synthesized CQDs/FeO composite improved electron-hole pair separation, resulting in effective photodegradation of pollutants like methylene blue (99.30% degradation in 480 min) and tetracycline, while maintaining high degradation efficiency across multiple cycles.
- Exhibited strong magnetism (34.7 emu/g), allowing for easy recovery and promising large-scale applications in photocatalytic water purification.