Silver Nanoparticle-Intercalated Cotton Fiber for Catalytic Degradation of Aqueous Organic Dyes for Water Pollution Mitigation.
Matthew Blake HillyerJacobs H JordanSunghyun NamMichael W EassonBrian D CondonPublished in: Nanomaterials (Basel, Switzerland) (2022)
Azo dyes are commonly used in textile color processing for their wide array of vibrant colors. However, in recent years these dyes have become of concern in wastewater management given their toxicity to humans and the environment. In the present work, researchers remediated water contaminated with azo dyes using silver nanoparticles (Ag NPs) intercalated within cotton fabric as a catalyst, for their enhanced durability and reusability, in a reductive degradation method. Three azo dyes-methyl orange (MO), Congo red (CR), and Chicago Sky Blue 6B (CSBB)-were investigated. The azo degradation was monitored by UV/vis spectroscopy, degradation capacity, and turnover frequency (TOF). The Ag NP-cotton catalyst exhibited excellent degradation capacity for the dyes, i.e., MO (96.4% in 30 min), CR (96.5% in 18.5 min), and CSBB (99.8% in 21 min), with TOFs of 0.046 min -1 , 0.082 min -1 , and 0.056 min -1 , respectively, using a 400 mg loading of catalyst for 100 mL of 25 mg L -1 dye. To keep their high reusability while maintaining high catalytic efficiency of >95% degradation after 10 cycles, Ag NPs immobilized within cotton fabric have promising potential as eco-friendly bio-embedded catalysts.
Keyphrases
- highly efficient
- aqueous solution
- silver nanoparticles
- ionic liquid
- visible light
- heavy metals
- quantum dots
- room temperature
- high resolution
- mass spectrometry
- reduced graphene oxide
- wastewater treatment
- ms ms
- risk assessment
- gold nanoparticles
- climate change
- human health
- oxidative stress
- carbon dioxide
- high throughput
- particulate matter
- drinking water
- water soluble