Application of single-atom Fe implanted N-doped carbon material as co-catalyst in the Fenton-like reaction and exploration of its enhanced activity. Issue 6 (December 2022)

• Record Type: Journal Article
• Authors: Meng, Qingnan; Hu, Huating; Hao, Dan; Yuan, Shenghao; He, Jing; Yu, Xiaojing; Xie, Zhangwen; Wang, Kai; Tang, Yufei; Zhao, Kang; Xu, Chunjie
• Is Part Of: Journal of environmental chemical engineering. Volume 10:Issue 6(2022)
• Publication Date: 2022-12
• Subjects: Single-atom Fe -- N-doped carbon -- Reduced graphene oxide -- Fenton-like reaction -- Fe2+ regeneration -- Co-catalyst; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2022.108843
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: Due to slow recovery of Fe 2+ and a narrow pH range of the Fenton and Fenton-like reactions, a single-atom Fe implanted N-doped carbon material (rGO@NC/SA-Fe) was used as the co-catalyst in the Fe 3+ /H2 O2 system in this paper. This material greatly accelerated the Fe 3+ /Fe 2+ cycle and thus promoted Rhodamine B (RhB) degradation. RhB was almost completely removed even at pH= 7. A systematic comparison was conducted between rGO@NC/SA-Fe and rGO@NC (without Fe). The results proved the vital importance of Fe single atoms, which not only improved the electron conductivity of rGO@NC/SA-Fe, but also promoted the combination of carbon materials and Fe 3+ with a higher oxidation potential. Moreover, the enhanced H2 O2 adsorption on single-atom Fe sites facilitated the participation of H2 O2 in the reaction. In addition, rGO@NC/SA-Fe exhibits excellent catalytic activity in various water bodies. The material still possessed good re-usability and stability after five catalytic cycles, which demonstrated its great application potential in wastewater treatment. Graphical Abstract: ga1 Highlights: rGO@NC/SA-Fe and rGO@NC are used as co-catalysts in the Fenton-like reaction. rGO@NC/SA-Fe shows superior activity than rGO@NC. The effects of single-atom Fe implanted are proposed. rGO@NC/SA-Fe is highly effective in a wide pH range and various water bodies.