Dual Z-scheme 2D/3D carbon-bridging modified g-C3N4/BiOI-Bi2O3 composite photocatalysts for effective boosting visible-light-driven photocatalytic performance

Bismuth-Based Z-Scheme Heterojunction Photocatalysts for Remediation of Contaminated Water

“…Figure b shows the second-generation Z-scheme heterojunction. Various types of materials, such as reduced graphene oxide, carbon quantum dot, graphitic carbon nitride, and noble metals (Au, Ag) , used as solid electron mediator. These materials act as a bridge, which serves as an electron shuttle mediator.…”

Double charge transfer mechanistic insights into the tailoring of BiOI nanoplates and boron-doped graphitic carbon nitride: a 2D/2D anchored p–n heterojunction nanocatalyst for improved photodegradation

“…Serving as an abode for numerous organisms and being one of the most used natural resources on planet Earth, water bodies have become a primary dumpyard of various industrial effluents, unused antibiotics, countless chemicals, as well as biodegradable and nonbiodegradable wastes. Though being synthesized for the treatment of ailments, the persistent nature of antibiotics such as tetracycline hydrochloride (TCH) has led to bacterial drug resistance 1 and their longer half-life often leads to residues in wastewater bodies. TCH is also known to cause rickettsia infections, plague fever, liver infections, atypical pneumonia, and kidney inflammations in human beings.…”

“…The presence of intra-layered covalent bonds and interlayered van der Waals forces instils unique structural characteristics in them, thus reinstating their advantage on catalytic photodegradation. 1 Among oxyhalides, BiOBr and BiOI show optimal activity. Herein, BiOI is chosen owing to its wide agreement with earlier reports of having better UV-Vis response for the photocatalytic degradation of TCH.…”

A novel g-C3N4 nanosheet/Ag3PO4/α-Bi2O3 ternary dual Z-scheme heterojunction with increased light absorption and expanded specific surface area for efficient photocatalytic removal of TC

“…g-C 3 N 4 (∼1.1 eV, CB) with a high CB edge potential belongs to photocatalyst I, while AP (∼2.67 eV, VB) and BO (∼3.14 eV, VB) of high VB belong to photocatalyst II. 21,27,28 In theory, AP, BO and g-C 3 N 4 are likely to form a ternary dual Z-scheme heterojunction, where e − are transferred from the CB of AP and BO to the VB of g-C 3 N 4 and recombine with h + , inhibiting the recombination of photogenerated carriers. This leads to the gathering of photogenerated e − in the CB of g-C 3 N 4 and photogenerated h + in the VB of AP and BO, retaining the strong redox ability of components.…”