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Journal of Nanoparticle Research

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01-10-2018 | Research Paper

CuO/g-C₃N₄ nanocomposite for elemental mercury capture at low temperature

Authors: Dongjing Liu, Cheng Lu, Jiang Wu

Published in: Journal of Nanoparticle Research | Issue 10/2018

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Abstract

Graphitic carbon nitride (g-C₃N₄) with unique and versatile properties has gained increasing research concerns. Here, CuO/g-C₃N₄ nanocomposite is fabricated and employed for gas-phase mercury (Hg⁰) removal at low temperature. Pure g-C₃N₄ performs well toward Hg⁰ adsorption at 40–200 °C with the optimal Hg⁰ removal efficiency of ~ 54.5% at 120 °C. CuO-modification can significantly promote the Hg⁰ capture ability of g-C₃N₄, probably due to the intimate interface contact of CuO and g-C₃N₄. The Hg⁰ removal efficiency of g-C₃N₄ first increases and then decreases with rising temperature, while temperature shows a promotional effect on Hg⁰ removal efficiency of CuO/g-C₃N₄. Hg⁰ is oxidized into HgO by the chemisorbed oxygen originated from the O–C–N structure of g-C₃N₄ and the lattice oxygen of CuO. g-C₃N₄ can be efficiently activated by modifying with CuO toward enhanced Hg⁰ oxidation ability, presumably attributed to the electron transfer at the interface of CuO and g-C₃N₄.

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Title: CuO/g-C3N4 nanocomposite for elemental mercury capture at low temperature
Authors: Dongjing Liu
Cheng Lu
Jiang Wu
Publication date: 01-10-2018
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 10/2018
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-018-4374-4

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