期刊论文

Peng, Xing;Zhang, Lizhi

英文

Chemical Engineering Journal

1385-8947

2020

389

124414

10.1016/j.cej.2020.124414

National Key Research and Development Program of China [2018YFC1800801, 2018YFC1802003]; Natural Science Funds for Distinguished Young ScholarsNational Natural Science Foundation of ChinaNational Science Fund for Distinguished Young Scholars [21425728]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21806049, 21936003, 21906126]; 111 ProjectMinistry of Education, China - 111 Project [B17019]; Central China Normal University [2016YBZZ037]

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In this study, we coated a high proton conducive shell on the zero-valent iron (ZVI) surface by mechanically ball-milling ZVI with oxalic acid dihydrate (OX-ZVI), and demonstrated that the generated FeC2O4 center dot 2H(2)O shell dramatically improved the Cr(VI) removal rate of ZVI by about 15-80 times. Owing to a higher proton conductivity of FeC2O4 center dot 2H(2)O shell than that of Fe2O3 shell, proton could easily transfer through FeC2O4 center dot 2H(2)O shell into iron core and be reduced to center dot H, accompanying with fast surface-bound Fe2+ generation, resulting in high efficiency...