Selective Removal of Perfluorobutyric Acid Using an Electroactive Ion Exchanger Based on Polypyrrole@Iron Oxide on Carbon Cloth | Zendy

Chenxi Huyan | Zendy; Shichao Ding | Zendy; Zhaoyuan Lyu | Zendy; Mark Engelhard | Zendy; Yuhao Tian | Zendy; Dan Du | Zendy; Dong Liu | Zendy; Yuehe Lin | Zendy

Open Access

Selective Removal of Perfluorobutyric Acid Using an Electroactive Ion Exchanger Based on Polypyrrole@Iron Oxide on Carbon Cloth

Author(s) -

Chenxi Huyan,

Shichao Ding,

Zhaoyuan Lyu,

Mark Engelhard,

Yuhao Tian,

Dan Du,

Dong Liu,

Yuehe Lin

Publication year - 2021

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.1c09374

Subject(s) - polypyrrole , adsorption , materials science , nanocomposite , ion exchange , chemical engineering , oxide , carbon fibers , ion , nanotechnology , polymer , chemistry , organic chemistry , polymerization , composite material , metallurgy , composite number , engineering

Perfluorobutyric acid (PFBA) is one type of perfluoroalkyl and polyfluoroalkyl substances (PFASs) and is widely used as an industrial compound. The removal of PFBA has attracted considerable scientific interests in recent decades because it causes environmental pollution and human diseases. Currently, the adsorption method has been used commonly to remove PFASs from wastewater. However, it is usually limited by the inevitable "secondary waste" produced in this treatment process. In this work, PFBA can be effectively removed by synergistic electrical switching ion exchange (ESIX) and a new type of nanostructured ion exchanger. Herein, the nanostructured ion exchanger has been designed and synthesized by coating a polypyrrole (PPy)@Fe 2 O 3 nanoneedle on carbon cloth (PPy@Fe 2 O 3 NN-CC). Results show that the PPy@Fe 2 O 3 NN-CC nanocomposite enhances ion exchange speed and efficiency, which ensures its high adsorption capacity and rapid regeneration property, thereby reducing secondary waste. Moreover, ESIX based on the PPy@Fe 2 O 3 NN-CC nanocomposite has high selectivity for adsorption of PFBA over other common anions in water, such as Cl - , SO 4 2- , and NO 3 - .

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