CuI-BiOI/Cu film for enhanced photo-induced charge separation and visible-light antibacterial activity

2D Graphdiyne Oxide Serves as a Superior New Generation of Antibacterial Agents

“…To understand the active species in the antibacterial process of GDYO, we conducted a scavenging experiment (Chen et al., 2011). using isopropanol alcohol (IPA) to scavenge for ⋅OH (Li et al., 2018d), 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy (TEMPOL) for ⋅O 2 − (Zhao et al., 2018), sodium azide (NaN 3 ) for 1 O 2 (Nosaka and Nosaka, 2017, Wang et al., 2018), and ethylenediaminetetraacetic acid ferric sodium salt (Fe(II)) for H 2 O 2 (Zhang et al., 2018). Before the experiment, we made sure that all the scavengers (the red curves in Figures 6A–6D) in the concentrations to be used had no (or quite low) bactericidal activity.…”

Preparation of Ga0.25Zn4.67S5.08 Microsphere by Ultrasonic Spray Pyrolysis and Its Photocatalytic Disinfection Performance under Visible Light

“…The higher photocatalytic performance of Ga 0.25 Zn 4.67 S 5.08 (400°C) can be ascribed to its larger specific surface area and more active sites. It is well known that active groups such as • OH, e -, and h + attack the bacterial cells during the reaction, eventually causing the decomposition of the cell wall [1]. In order to further explore which active substance played a decisive role in the photocatalytic sterilization process, different kinds of radical scavengers were added to a series of identical photocatalytic reaction systems.…”

“…Various pathogenic bacteria living in waters have always been the greatest threat to human health. The statistic data show that millions of people were disabled or die because of bacteria every year [1]. Traditional sterilization techniques include chemical sterilization and ultraviolet (UV) disinfection.…”

LaCoO3 acts as a high‐efficiency co‐catalyst for enhancing visible‐light‐driven tetracycline degradation of BiOI

“…In spite of the above outstanding advantages, the photocatalytic activity of individual BiOI is still not satisfactory owing to several bottlenecks, including its poor conductivity and the fast recombination rate of photo‐excited electron‐hole pairs, which is impossible to satisfy the requirements of practical applications. As a matter of fact, a majority of photoexcited electrons in the migration process are directly and rapidly recombined with photoexcited holes in single BiOI, and only few of them are able to move to the photocatalyst surface and participate in the succedent redox reaction . Undoubtedly, compared to the single‐component BiOI, the construction of a bi‐ or multi‐component composite photocatalyst by interfacing BiOI with a second suitable semiconductor, photosensitizer or co‐catalyst has been identified as a reliable and promising method for achieving higher carrier mobility and accelerating the separation efficiency of photoexcited charge carriers …”

“…As a matter of fact, a majority of photoexcited electrons in the migration process are directly and rapidly recombined with photoexcited holes in single BiOI, and only few of them are able to move to the photocatalyst surface and participate in the succedent redox reaction. 23,24 Undoubtedly, compared to the single-component BiOI, the construction of a bi-or multicomponent composite photocatalyst by interfacing BiOI with a second suitable semiconductor, photosensitizer or co-catalyst has been identified as a reliable and promising method for achieving higher carrier mobility and accelerating the separation efficiency of photoexcited charge carriers. 25,26 As a p-type semiconductor and an important member of perovskite-type cobalt oxides, lanthanum cobaltite (LaCoO 3 ) has recently received considerable attention for the photocatalytic CO 2 reduction and contaminants degradation owing to its particular features such as unique crystal structure, attractive photoelectrical property, nontoxicity, and low cost.…”