A green in-situ synthesis of biochar-supported Fe0/Cu0 bimetallic catalyst for the efficient oxidation antibacterial in water: Performance and mechanism analysis

Hu, Zhan; Rao, Jiahao; Xie, Zhiqin; Li, Meng; Su, Lezhu; Chen, Yuzhen; Gao, Wenbin; Yan, Tao; Zhou, Zhi; Zhou, Nan

doi:10.1016/j.jwpe.2022.103424

Cited by 6 publications

(1 citation statement)

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“…Therefore, developing economical and green methods for preparing bimetallic composite materials is highly desirable. The carbothermal method has recently gained popularity as an environmentally friendly approach for preparing Fe/C composites [22]; zero-valent metals were produced during the carbothermic reduction process and loaded onto biochar [23]. Nonetheless, carbon-supported bimetallic nanoparticles synthesised using this method have rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

Cobalt/Iron Bimetallic Biochar Composites for Lead(II) Adsorption: Mechanism and Remediation Performance

Zhao,

Qin,

Liu

et al. 2024

Molecules

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The performance of nano-zero-valent iron for heavy metal remediation can be enhanced via incorporation into bimetallic carbon composites. However, few economical and green approaches are available for preparing bimetallic composite materials. In this study, novel Co/Fe bimetallic biochar composites (BC@Co/Fe-X, where X = 5 or 10 represents the CoCl2 concentration of 0.05 or 0.1 mol L−1) were prepared for the adsorption of Pb2+. The effect of the concentration of cross-linked metal ions on Pb2+ adsorption was investigated, with the composite prepared using 0.05 mol L−1 Co2+ (BC@Co/Fe-5) exhibiting the highest adsorption performance. Various factors, including the adsorption period, Pb2+ concentration, and pH, affected the adsorption of Pb2+ by BC@Co/Fe-5. Further characterisation of BC@Co/Fe-5 before and after Pb2+ adsorption using methods such as X-ray diffraction and X-ray photoelectron spectroscopy suggested that the Pb2+ adsorption mechanism involved (i) Pb2+ reduction to Pb0 by Co/Fe, (ii) Co/Fe corrosion to generate Fe2+ and fix Pb2+ in the form of PbO, and (iii) Pb2+ adsorption by Co/Fe biochar. Notably, BC@Co/Fe-5 exhibited excellent remediation performance in simulated Pb2+-contaminated water and soil with good recyclability.

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Section: Introductionmentioning

confidence: 99%