Efficient dye-removal via Ni-decorated graphene oxide-carbon nanotube nanocomposites

Hu, Chenxi; Le, Anh Thi; Pung, Swee Yong; Stevens, Lee; Neate, Nigel; Hou, Xianghui; Grant, David; Xu, Fang

Abstract

The nickel nanoparticles decorated graphene oxide-carbon nanotubes nanocomposite has been prepared through a novel molecular-level-mixing method followed by a freeze-drying and subsequent reduction process. The resulting products showed a well-dispersed 3D structure and demonstrated excellent performance in removing Rhodamine B (RhB) from the aqueous solution through a synergistic effect of physical adsorption and photo-degradation. The physical adsorption of RhB by this nanocomposite followed the pseudo-second-order and could be ascribed to its high surface area. The nanocomposite containing 30 wt.% of Ni exhibited the highest removal capacity of ca. 41.5 mg g-1 in 5 ppm RhB solution. Meanwhile, because of the ferromagnetism of Ni nanoparticles coated, the nanocomposite could be easily collected and recycled after the removal of dye via magnetic separation. Thus, the nanocomposite have demonstrated great potentials as an efficient adsorbent with good photocatalytic performance for removing organic dyes from wastewater.

Citation

Hu, C., Le, A. T., Pung, S. Y., Stevens, L., Neate, N., Hou, X., …Xu, F. (2021). Efficient dye-removal via Ni-decorated graphene oxide-carbon nanotube nanocomposites. Materials Chemistry and Physics, 260, Article 124117. https://doi.org/10.1016/j.matchemphys.2020.124117

• Journal Article Type: Article
• Acceptance Date: Nov 30, 2020
• Online Publication Date: Dec 1, 2020
• Publication Date: Feb 15, 2021
• Deposit Date: Dec 1, 2020
• Publicly Available Date: Dec 2, 2021
• Journal: Materials Chemistry and Physics
• Print ISSN: 0254-0584
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 260
• Article Number: 124117
• DOI: https://doi.org/10.1016/j.matchemphys.2020.124117
• Keywords: GO-CNT nanocomposites; Ni nanoparticles decoration; Mesoporous structure; RhB removal; Easy collection
• Public URL: https://nottingham-repository.worktribe.com/output/5094313
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0254058420314772?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: Efficient dye-removal via Ni-decorated graphene oxide-carbon nanotube nanocomposites; Journal Title: Materials Chemistry and Physics; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.matchemphys.2020.124117; Content Type: article; Copyright: © 2020 Published by Elsevier B.V.