Photovoltage response of (XZn)Fe2O4-BiFeO3 (X=Mg, Mn or Ni) interfaces for highly selective Cr3+, Cd2+, Co2+ and Pb2+ ions detection

Liang Bian; Yu-Jin Li; Jing Li; Jia-Nan Nie; Fa-Qin Dong; Mian-Xin Song; Li-Sheng Wang; Hai-Liang Dong; Hai-Long Li; Xiao-Qin Nie; Xiao-Yan Zhang; Xin-Xi Li; Lei Xie

doi:10.1016/j.jhazmat.2017.04.071

Photovoltage response of (XZn)Fe₂O₄-BiFeO₃ (X=Mg, Mn or Ni) interfaces for highly selective Cr³⁺, Cd²⁺, Co²⁺ and Pb²⁺ ions detection

J Hazard Mater. 2017 Aug 15:336:174-187. doi: 10.1016/j.jhazmat.2017.04.071. Epub 2017 May 1.

Authors

Liang Bian¹, Yu-Jin Li², Jing Li², Jia-Nan Nie², Fa-Qin Dong³, Mian-Xin Song³, Li-Sheng Wang⁴, Hai-Liang Dong⁵, Hai-Long Li⁶, Xiao-Qin Nie³, Xiao-Yan Zhang⁶, Xin-Xi Li⁷, Lei Xie⁷

Affiliations

¹ Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang 621010, Sichuan, China; Institute of Gem and Material Technology, Hebei GEO University, Shijiazhuang 050000, Hebei, China; Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China. Electronic address: bianliang@ms.xjb.ac.cn.
² Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China.
³ Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang 621010, Sichuan, China.
⁴ Institute of Gem and Material Technology, Hebei GEO University, Shijiazhuang 050000, Hebei, China.
⁵ Department of Geology and Environmental Earth Science, Miami University, Oxford 45056, USA.
⁶ Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang 621010, Sichuan, China; Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China.
⁷ Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, Sichuan, China.

PMID: 28494305
DOI: 10.1016/j.jhazmat.2017.04.071

Abstract

High-photostability fluorescent (XZn)Fe₂O₄ (X=Mg, Mn or Ni) embedded in BiFeO₃ spinel-perovskite nanocomposites were successfully fabricated via a novel bio-induced phase transfer method using shewanella oneidensis MR-1. These nanocomposites have the near-infrared fluorescence response (XZn or Fe)-O-O-(Bi) interfaces (785/832nm), and the (XZn)Fe₂O₄/BiFeO₃ lattices with high/low potentials (572.15-808.77meV/206.43-548.1meV). Our results suggest that heavy metal ion (Cr³⁺, Cd²⁺, Co²⁺ and Pb²⁺) d↓ orbitals hybridize with the paired-spin X-Zn-Fe d↓-d↓-d↑↓ orbitals to decrease the average polarization angles (-29.78 to 44.71°), qualitatively enhancing the photovoltage response selective potentials (39.57-487.84meV). The fluorescent kinetic analysis shows that both first-order and second-order equilibrium adsorption isotherms are in line and meet the Langmuir and Freundlich modes. Highly selective fluorescence detection of Co²⁺, Cr³⁺ and Cd²⁺ can be achieved using Fe₃O₄-BiFeO₃ (Langmuir mode), (MgZn)Fe₂O₄-BiFeO₃ and (MnZn)Fe₂O₄-BiFeO₃ (Freundlich mode), respectively. Where the corresponding max adsorption capacities (q_max) are 1.5-1.94, 35.65 and 43.7 multiple, respectively, being more competitive than that of other heavy metal ions. The present bio-synthesized method might be relevant for high-photostability fluorescent spinel-perovskite nanocomposites, for design of heavy metal ion sensors.

Keywords: Ferrite-bismuth ferrite; Heavy metal ion; Interface; Photovoltage response; Selective fluorescence probe.