Antimony is more than an emerging pollutant in water but a scare resource.In this study,we report an adsorbent with the record capacity so far from the balanced view of Sb(Ⅲ) and Sb(Ⅴ).The composite adsorbent was fa...Antimony is more than an emerging pollutant in water but a scare resource.In this study,we report an adsorbent with the record capacity so far from the balanced view of Sb(Ⅲ) and Sb(Ⅴ).The composite adsorbent was fabricated by encapsulating hollow Fe_(3)O_(4)nanosphere with the EDTA grafted chitosan,and it has superhigh adsorption capacity of for 657.1 mg/g for Sb(Ⅲ) and 467.3 mg/g for Sb(Ⅴ),respectively.The mechanism study reveals that the adsorption of Sb initializes from the Fe_(3)O_(4),propagates along the chitosan with hydrogen bond,and terminates at the inner sphere complex with the EDTA moiety in the adsorbent.In view of the ultra-high adsorption capacity of the adsorbent,the recovered adsorbent that contains abundant (>36.4%) highly dispersed antimony nanoparticles (600-FCSE-Sb) is applied to Li-ion battery anode after reduction.This article provides a new idea for connecting water treatment and electric energy storage.展开更多
基金supported by the National Natural Science Foundation of China (No.21872020)。
文摘Antimony is more than an emerging pollutant in water but a scare resource.In this study,we report an adsorbent with the record capacity so far from the balanced view of Sb(Ⅲ) and Sb(Ⅴ).The composite adsorbent was fabricated by encapsulating hollow Fe_(3)O_(4)nanosphere with the EDTA grafted chitosan,and it has superhigh adsorption capacity of for 657.1 mg/g for Sb(Ⅲ) and 467.3 mg/g for Sb(Ⅴ),respectively.The mechanism study reveals that the adsorption of Sb initializes from the Fe_(3)O_(4),propagates along the chitosan with hydrogen bond,and terminates at the inner sphere complex with the EDTA moiety in the adsorbent.In view of the ultra-high adsorption capacity of the adsorbent,the recovered adsorbent that contains abundant (>36.4%) highly dispersed antimony nanoparticles (600-FCSE-Sb) is applied to Li-ion battery anode after reduction.This article provides a new idea for connecting water treatment and electric energy storage.
