%0 Journal Article
%A Yawei Shi
%A Wei Zheng
%A Hao Liu
%A Liang Wang
%A Hongwei Zhang
%T Protein-derived nitrogen and sulfur co-doped carbon for efficient adsorptive removal of heavy metals
%D 2019
%R 10.1016/j.cjche.2018.11.017
%J Chinese Journal of Chemical Engineering
%P 2581-2586
%V 27
%N 10
%X A nitrogen and sulfur co-doped carbon has been synthesized employing egg white as a sustainable protein-rich precursor. According to CHNS elemental analysis, N, S and O heteroatoms accounted for mass fractions of 3.66%, 2.28% and 19.29% respectively, and the types of surface functionalities were further characterized by FT-IR and XPS measurements. Although the carbon possessed a smaller surface area (815 m2·g-1) compared to a commercial activated carbon (1100 m2·g-1), its adsorption capacity towards Co2+ reached 320.3 mg·g-1, which was over 8 times higher compared to the limited 34.0 mg·g-1 over the activate carbon. Furthermore, the carbon was found to be an efficient adsorbent towards a series of metal ions including VO2+, Cr3+, Ni2+, Cu2+ and Cd2+. Combined with its environmental merits, the protein derived carbon may be a promising candidate for heavy metal pollution control.
%U https://cjche.cip.com.cn/EN/10.1016/j.cjche.2018.11.017