Rapid photocatalytic degradation of cationic organic dyes using Li-doped Ni/NiO nanocomposites and their electrochemical performance

Abstract

This work reports novel bi-functional Li-doped Ni/NiO nanocomposites as potential candidates for energy storage and water treatment applications.

Effect of Inorganic Ions on the Discoloration of Rhodamine B by the Fenton Process

“…Cl − can undergo complexing reactions with ferrous and ferric ions, which prevents the reaction causing the formation of hydroxyl radicals product. Complexation reactions are shown in Eqs ( 16) - (20).…”

“…FeCl 2+ + Cl − → FeCl 3 (20) Based on the above reactions, the Fenton reaction was inhibited because ferrous and ferric complexes cannot catalyze hydrogen peroxide to produce hydroxyl radicals as e ciently as when they are free. At the initial stage of the Fenton reaction, the species of iron is the ferrous ion.…”

“…The development of effective methods of treating these dyes has been and continues to be the subject of much research. Currently, the most recent advances in wastewater treatment have been made in advanced oxidation processes (AOP) which appear to be more e cient techniques for the destruction of organic pollutants (Fu et al 2021 ;Sydorchuk et al 2021 ;Ranjitha et al 2021).…”

Multifunctional Na-enriched Ni–Fe/Ni–P plates for highly efficient photo- and electrocatalytic water splitting reactions

“…Among the metal oxides, nickel oxide has been widely used in photocatalytic water splitting due to the good electron capturing affinity of nickel atoms. 20–22 It has also been reported that metallic Ni, in combination with a NiO semiconductor, forms an ohmic contact, facilitating the transfer of electrons. 23 This enables good charge separation and movement of electrons to the active sites, enabling a high water splitting activity.…”

Metal Oxide-Induced Instability and Its Mitigation in Halide Perovskite Solar Cells

“…22 These studies univocally pinpoint the deterioration of device performance as being the result of possible interfacial degradation from enhanced redox reactivity at the NiO/perovskite interface, as NiO is a wellknown oxidation catalyst and photocatalyst that is often employed in the decomposition of organic pollutants. 31,32 In their paper, Boyd et al proposed that during perovskite precursor deposition on top of NiO x , the undercoordinated Ni 3+ surface species readily reacted with perovskite precursors and deprotonated the cationic amines while oxidizing I − species via an electron-transfer−proton-transfer mechanism. This led to the formation of a Pb 2−x Br x rich phase at the NiO x / perovskite interface.…”