Porous NiFe-oxide nanocubes derived from prussian blue analogue as efficient adsorbents for the removal of toxic metal ions and organic dyes

Yi Xie; Changlun Chen; Xirui Lu; Fen Luo; Chengming Wang; Ahmed Alsaedi; Tasawar Hayat

doi:10.1016/j.jhazmat.2019.120786

Porous NiFe-oxide nanocubes derived from prussian blue analogue as efficient adsorbents for the removal of toxic metal ions and organic dyes

J Hazard Mater. 2019 Nov 5:379:120786. doi: 10.1016/j.jhazmat.2019.120786. Epub 2019 Jun 17.

Authors

Yi Xie¹, Changlun Chen², Xirui Lu³, Fen Luo⁴, Chengming Wang⁵, Ahmed Alsaedi⁶, Tasawar Hayat⁶

Affiliations

¹ Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China; Instruments' Center for Physical Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, PR China.
² Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China; NAAM Research Group, King Abdulaziz University, Jeddah 21589, Saudi Arabia. Electronic address: clchen@ipp.ac.cn.
³ State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, PR China; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science Technology, Mianyang 621010, PR China.
⁴ State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, PR China.
⁵ Instruments' Center for Physical Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, PR China.
⁶ NAAM Research Group, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

PMID: 31234006
DOI: 10.1016/j.jhazmat.2019.120786

Abstract

A novel porous NiFe-oxide nanocubes (NiFe NCs) binary material was successfully fabricated via a facile and scalable tactic, which involved a morphology-inherited heat treating of Ni₃[Fe(CN)₆]₂·xH₂O prussian blue analogue nanocubes as self-sacrificial templates. Consequently, it was demonstrated that the NiFe NCs consisted of primary nanostructure units and interconnected pores, with an average size of ˜80 nm. When employed as adsorbents, the as-prepared NiFe NCs displayed remarkable adsorption capacities for heavy metal ions (232.3 mg g^-1 for As(V) and 350.71 mg g^-1 for Cr(VI)) and organic dyes (284.99 mg g^-1 for XO and 31.97 mg g^-1 for CR at 298 K). The resulting NiFe NCs further revealed efficient regeneration and reusability even after five consecutive adsorption/desorption cycles. The microscopic spectrum analysis demonstrated that the interaction between As(V) and NiFe NCs was mainly ascribed to the metal-oxide bonds (MO) and hydroxyl groups (OH), while Cr(VI) adsorption was in conjunction with the reduction reaction of Cr(VI) to Cr(III). Furthermore, the adsorption of organic dyes on NiFe NCs depended on the pore structure and molecule sizes of the organic dye molecules. These findings make cost-efficient NiFe NCs materials a powerful candidate for remediating water contaminated with inorganic and organic contaminants.

Keywords: Adsorption; As(V); Cr(VI); Dyes; NiFe-oxide nanocubes.

Publication types

Research Support, Non-U.S. Gov't