g-C₃N₄/MgO nanosheets: light-independent, metal-poisoning-free catalysts for the activation of hydrogen peroxide to degrade organics

Abstract

The bonding between MgO and g-C3N4 in g-C3N4/MgO nanosheets plays a key role in activating H2O2 to degrade organic dyes.

Synthesis of oxygen-doped graphitic carbon nitride and its application for the degradation of organic pollutants via dark Fenton-like reactions

“…This result was satisfactory in principle compared to that of the currently reported results. 1,7-9 For instance, Ge et al 7 found that methyl orange degradation over g-C 3 N 4 /MgO hardly occurred at pH < 2 and under visible light irradiation. RhB was found here to be more quickly degraded when the initial pH was adjusted to pH 11 using diluted NaOH solution (0.1 M).…”

“…This result was remarkably better than that under other conditions, where the alkaline conditions reinforced the catalytic activity. However, Ge et al 7 reported that $5% of RhB degradation efficiency was lost when the initial pH was increased from 8 to 10. The initial pH had a different inuence on the catalyst adsorption capacity (Fig.…”

“…Thus, to solve this problem, much effort has been devoted to achieving excellent performances in the dark for better practical use. [7][8][9][10] For example, Ge et al 7 prepared a MgO/ g-C 3 N 4 catalyst by employing high-temperature calcination. Zhu et al 8 synthesized Cu-g-C 3 N 4 composites via the pyrolysis of [H 2 mela] 2 [CuCl 5 ]Cl, and Ding et al 9 developed the g-C 3 N 4 -supported iron oxide composite.…”

A novel carbon nanotube–magnesium oxide composite with excellent recyclability to efficiently activate peroxymonosulfate for Rhodamine B degradation

“…2] [10,11]. Although transition metal-containing catalysts have achieved good degradation efficiency, their practical applications are limited because of the secondary pollution of dissolved transition metals in the process [12,13]. In order to solve these problems, some researchers have used various porous supporters to load transition metal oxides, which can actually enhance the catalytic performance and reduce the leaching rate of transition metal ions [4,14,15].…”

Transforming Photocatalytic g‐C3N4/MoSe2 into a Direct Z‐Scheme System via Boron‐Doping: A Hybrid DFT Study

“…[3][4][5][6][7] Nevertheless, photocatalytic technique requires highly efficient, stable, low-cost and pollution-free photocatalysts. Many semiconductor photocatalysts, such as TiO 2 , [8,9] g-C 3 N 4 , [10] BiVO 4 , [11] ZnO [12] and MoSe 2 , [13] have been widely investigated by researchers. However, poor visible-light absorption, low separation efficiency of photo-induced carriers or weak electron conductivity greatly limits large-scale applications of these single-component photocatalysts.…”