Iron nanoparticles in situ encapsulated in lignin-derived hydrochar as an effective catalyst for phenol removal.

Environmental Science and Pollution Research International
Qingqing MaShiyun Ai

Abstract

In this work, we have developed a low-cost and green strategy for nanoscale zero-valent iron (ZVI) in situ encapsulated in lignin-derived hydrochar (Fe@HC) by a facile one-pot synthesis route. The as-synthesized Fe@HC was characterized for physicochemical properties by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscope (TEM), thermal gravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FT-IR). Further catalytic experiment revealed that phenol could be completely degraded by Fe@HC-800 within 20 min with peroxymonosulfate (PMS) at mild temperatures. Fe@HC-800 catalyst also exhibited stable performance after three runs of regeneration. The XPS and XRD results proved the key role of Fe0 in the degradation of phenol. This approach is of great potential to the development of green materials biomass-derived carbon materials for wastewater treatment applications.

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Citations

Sep 23, 2020·Environmental Science and Pollution Research International·Yingchao LiShiyun Ai
Jul 26, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·E M KoushikaG Shanmugavelayutham
Feb 13, 2021·Environmental Technology·Naiara de O Dos SantosLuiza C Campos

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