Construction of crystalline and amorphous interface between FeS2 and polyaniline for enhanced electrocatalytic activity

Wei Xiong; Altair T.F. Cheung; Yizhen Zhang; Keda Chen; Yong Shi; Xinyong Li; Michael K.H. Leung

doi:10.1016/j.apsusc.2019.144534

Author(s)

Wei Xiong
Altair T.F. Cheung
Yong Shi
Xinyong Li

Related Research Unit(s)

Detail(s)

Original language	English
Article number	144534
Journal / Publication	Applied Surface Science
Volume	505
Online published	6 Nov 2019
Publication status	Published - 1 Mar 2020

Link(s)

DOI	DOI https://doi.org/10.1016/j.apsusc.2019.144534 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85075377773&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(fa6b7457-83c1-4b18-8292-263a32c49a5c).html

Abstract

We report a facile strategy to synthesize the FeS₂/polyaniline/exfoliated graphene (FeS₂/PANI /EG) with the formation of crystalline and amorphous interface for enhanced electrocatalytic activity. The PANI layer consists of nanowires roughly 100 nm in diameters and exhibits randomly distributed porous structure and the diameters of FeS₂ distributed from 5 nm to 15 nm. The transmission electron microscopy image indicates the successful construction of crystalline and amorphous interface between FeS₂ and PANI. In addition, the S element is doped into the PANI by forming C-S covalent bond. Thus, the prepared FeS₂/PANI/EG film shows excellent catalytic activity with the potential of 1.49 V at 10 mA cm⁻² for oxygen evolution reaction in 1 M KOH solution, comparing with the 1.59 V and 1.65 V for FeS₂/EG and PANI/EG, respectively.

Research Area(s)

Crystalline-amorphous interface, Electrocatalysis, FeS2/polyaniline, Oxygen evolution reaction

Citation Format(s)

[ RIS ] [ BibTeX ]

Construction of crystalline and amorphous interface between FeS₂ and polyaniline for enhanced electrocatalytic activity. / Xiong, Wei; Cheung, Altair T.F.; Zhang, Yizhen et al.
In: Applied Surface Science, Vol. 505, 144534, 01.03.2020.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Xiong, W, Cheung, ATF, Zhang, Y , Chen, K, Shi, Y, Li, X & Leung, MKH 2020, 'Construction of crystalline and amorphous interface between FeS₂ and polyaniline for enhanced electrocatalytic activity', Applied Surface Science, vol. 505, 144534. https://doi.org/10.1016/j.apsusc.2019.144534

Xiong, W., Cheung, A. T. F., Zhang, Y., Chen, K., Shi, Y., Li, X., & Leung, M. K. H. (2020). Construction of crystalline and amorphous interface between FeS₂ and polyaniline for enhanced electrocatalytic activity. Applied Surface Science, 505, Article 144534. https://doi.org/10.1016/j.apsusc.2019.144534

Xiong W, Cheung ATF, Zhang Y , Chen K, Shi Y, Li X et al. Construction of crystalline and amorphous interface between FeS₂ and polyaniline for enhanced electrocatalytic activity. Applied Surface Science. 2020 Mar 1;505:144534. Epub 2019 Nov 6. doi: 10.1016/j.apsusc.2019.144534

Xiong, Wei ; Cheung, Altair T.F. ; Zhang, Yizhen et al. / Construction of crystalline and amorphous interface between FeS₂ and polyaniline for enhanced electrocatalytic activity. In: Applied Surface Science. 2020 ; Vol. 505.