Wonyong Choi

TL;DR: In this paper, the authors investigated the effect of surface fluorination on photocatalytic degradation of cationic methylene blue (MB) and anionic humic acid (HA).

TL;DR: In this paper, the authors carried out density functional theory calculations using the B3LYP/6-31G** method for the initial OH radical reactions with four D2h symmetric congeners, namely, dibenzo-p-dioxin (DD), 1,4,6,9-tetrachlorodibenzos-pdioxins (1469-TCDD), 2,3,7,8-tricarithm-diametrization, and octachlorodebenszo p-d

TL;DR: It was found that the in situ photogenerated triiodides oxidize As(III) with regenerating iodides by completing a cycle, essentially an iodide-mediated photocatalysis.

TL;DR: In this paper, the authors used Humic acid (HA), a ubiquitous constituent of real water, as the model photocatalyst to investigate its durability in the presence of humic acid, and found that no sign of TiO2 deactivation was observed without HA, whereas significant deactivation occurred with HA, and the major contributing factor was the adsorption of in-situ oxidized HA, which formed surface complexes with TiO 2, blocked the active sites, and decreased the efficiency of photogenerated charge transfer.

TL;DR: In this article, a dual-modified hematite electrode was synthesized and the photoelectrochemical (PEC) water oxidation performance and durability of the hematites were examined in detail.