Waste cotton fabric derived porous carbon containing Fe3O4/NiS nanoparticles for electrocatalytic oxygen evolution

Shan Jiang, Hao Shao, Genyang Cao, Han Li, Weilin Xu, Jingliang Li, Jian Fang, Xungai Wang

Table 1 XPS atomic percentages of different catalysts.

Samples S@CC Fe3O4/Ni@CC Fe3O4/S@CC NiS@CC Fe3O4/NiS@CC C 1 s 94.75 91.11 88.22 92.65 87.23 S 2p 1.64 0.13 2.58 1.98 2.09 N 1 s 0.58 0.48 0.79 0.55 0.84 O 1 s 2.7 6.03 6.71 2.95 7.28 Fe 2p 0.17 1.26 1.43 0.13 1.18 Ni 2p 0.16 0.99 0.27 1.74 1.38