Severe pollution of aquatic environments impacts detrimentally both ecological systems and human health.Dye-containing wastewater is one of the typical representatives.Yeast cell is chosen as both phosphorus and carbon precursors,which is converted to iron phosphide/biocarbon composite through a coprecipitation-anoxic pyrolysis approach.The as-obtained iron phosphide/biocarbon composite is applied as the catalyst in advanced oxidation reaction,which can activate sulfite to degrade orange Ⅱ dye,a pollutant in water.Material characterization indicates that iron phosphide is composed of Fe2P and Fe3P.Under the optimized catalytic conditions,10 mg·L-1 of orange Ⅱ dye in simulated wastewater can be completely removed after 120 minutes of adsorption and catalysis treatment over the catalyst.Further reaction mechanism analysis proves that the iron phosphide/biocarbon composite activates sulfite to generate sulfate radicals and hydroxyl radicals,which are responsible for the oxidation of orange Ⅱ Dye.
关键词
高级氧化技术/过渡金属磷化物/生物碳/染料废水/降解
Key words
advanced oxidation technology/transition metal phosphide/biocarbon/dye wastewater/degradation
维普
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