Preparation and Characterization of Nano-strontium Titanate Based on Glass Fiber Filter and its Application in Adsorption of Heavy Metals

摘要

Nano-strontium titanate based on glass fiber filter (GFST) was successfully prepared by sol-gel method and characterized using XRD and SEM.The adsorptive potential of GFST for heavy metal ions,such as lead,cadmium,zinc and nickel,was investigated.The results showed that the nano-strontium titanate could crystal based on glass fiber,gaining a new block adsorbent like a leaf.The lead,cadmium,zinc and nickel ions were quantitatively retained at pH 6-9; their adsorption capacities of GFST for lead,cadmium,zinc and nickel ions were 153.21 mg·g-1,8.32 mg·g-1,21.36 mg.g-1 and 4.80 mg·g-1,respectively.The adsorbent can be regenerated completely by elution with 0.5 mol·L-1 HNO3.The adsorbent has a promising prospect in removal or enriching of lead,cadmium,zinc and nickel ions in water.