Polymer quantum dots doped in metal organic framework for sono-catalytic degradation of sulfamethazine

Viscose Support for Assembly of Cu2O and TiO2: Antimicrobial, Photocatalytic, and Recoverable Composites for Cr(VI) Removal

“…The mechanism of Cr­(VI) photocatalytic removal could be elucidated according to research that was reported in literature. , The photocatalytic removal of Cr­(VI) via exploiting the currently prepared composites was confirmed by the above-mentioned data, whereas a mechanism could be assumed according to the photocatalytic removal results and the chemical structures of the composites. The prepared composites contain many accessible sites represented in metal oxides as superior photocatalysts, functional groups of viscose, and porosity of viscose fabrics as a supporting template.…”

“…By photocatalysis, the hazardous pollutants are either oxidized or reduced. The action of the photocatalysts could be illustrated as follows: under the effect of irradiation, the valence band hole in the photocatalyst strongly oxidizes, and the conduction band electron sequentially reduces. , However, at the outer surface, the excited electron and hole undergo a redox reaction with adsorbed species such as H 2 O, – OH, organic ingredients, or O 2 . The charges could interact directly with the adsorbed pollutants, but the reaction with H 2 O is reported to be far more likely, as H 2 O molecules are far more populous than pollutants.…”

“…18,19 However, at the outer surface, the excited electron and hole undergo a redox reaction with adsorbed species such as H 2 O, − OH, organic ingredients, or O 2 . 20 The charges could interact directly with the adsorbed pollutants, but the reaction with H 2 O is reported to be far more likely, as H 2 O molecules are far more populous than pollutants. The oxidation of H 2 O or − OH via the hole generates •OH radicals, as an extremely strong and nondiscriminant oxidizing agent.…”

MXene V2CTx Nanosheet/Bismuth Quantum Dot-Based Heterostructures for Enhanced Flexible Photodetection and Nonlinear Photonics

“…Mixed-dimensional heterostructures, the combination of components with different dimensionalities, have been regarded as an alternative strategy to address the limitations of single building blocks and further to realize high-performance multifunctional (opto)­electronic devices and advanced photonic devices due to complementary characteristics, such as no need of lattice matching, and strong tolerance to the disorder, contamination, and charged impurities. − For instance, in 2020, Zhang et al reported that 0D Bi QDs were anchored on the 2D Te NSs to successfully fabricate 2D Te NS/0D Bi QD-based heterostructures for remarkably enhanced photodetection performance compared to individual 2D Te NSs or 0D Bi QDs. In 2020, Wu et al reported that taking advantage of low-temperature solution-processability, excellent light absorption coefficient, and long charge carrier diffusion length, 0D perovskite CsPbI 3– x Br x QDs were integrated onto monolayer MoS 2 to facilitate the interfacial photocarrier separation and carrier injection, which exhibited a high R of 7.7 × 10 4 A W –1 , a specific detectivity of ≈5.6 × 10 11 Jones, and an external quantum efficiency exceeding 10 7 %.…”