Visible light–driven photoelectrocatalytic semiconductor heterojunction anodes for water treatment applications

Bismuth Oxyhalide-Based Materials (BiOX: X = Cl, Br, I) and Their Application in Photoelectrocatalytic Degradation of Organic Pollutants in Water: A Review

“…Although PEC requires complex systems because of the need for a stable photoelectrode, the application of a bias potential and a light source, it is clear that its advantages outweigh these drawbacks when compared to the degradation process using photocatalysis. In fact, the electrical energy consumed in photoelectrocatalytic degradation is less than that needed for anodic oxidation, which often requires high cell potentials to achieve mineralization ( Arotiba et al, 2020 ).…”

“…), dyes, detergents (surfactants), and disinfection byproducts—are persistent organic molecules that can be found in wastewater, treated water, and natural water sources in concentrations ranging from mg/L to μg/L ( Quesada et al, 2019 ; Gao et al, 2021 ; Li et al, 2021 ; Martínez-Huitle et al, 2015 ; Sanganyado et al, 2017 ; Garcia-Segura et al, 2020 ; Vasseghian et al, 2021 ; Zhang et al, 2021 ). CECs are generally complex and chemically stable molecules, which makes the removal process or degradation by traditional methods very complicated ( Arotiba, Orimolade and Koiki, 2020 ). Currently, the consumption of inadequately treated water represents a risk to human health, as globally, approximately 700 million people do not have access to drinking water ( Urban, 2017 ).…”

Cu2O as an emerging semiconductor in photocatalytic and photoelectrocatalytic treatment of water contaminated with organic substances: a review

“…A review discussing the semiconductor heterojunction extensively has been published by our group. 76…”

Photoelectrocatalytic Degradation of Congo Red Dye with Activated Hydrotalcites and Copper Anode

“…Most studies focused on doping TiO2 with metallic ions such as nickel, manganese, cobalt, titanium, chrome, iron, vanadium, zinc, and copper, as well as with nonmetallic elements or even through the formation of composites with MnO2, In2O3, CeO2, and MoS2 [19][20][21]. There is another alternative currently being studied to improve the photocatalytic activity of TiO2 in photoactivation using an electric current, which suggests that if a better photoactivation of TiO2 corresponds to a higher degeneration rate of reactive species, it would also correspond to a higher overall degradation performance [22,23].…”