Chemical Engineering Department, Universidad Nacional de Colombia, Campus La Nubia, Manizales, Caldas, Colombia.
Faculty of Engineering, Universidad Libre, Av. Cr 70 53-40, Bogotá, Colombia.
Environ Sci Pollut Res Int. 2019 Feb;26(5):4202-4214. doi: 10.1007/s11356-018-3116-6. Epub 2018 Sep 26.
The aim of the present research was to study the photocatalytic activity under UV/visible irradiation of the ceramic compound SrEuZrTiO (SEZT1) using ethylenediaminetetraacetic acid (EDTA) as a sacrificial agent to produce H. The effects of the reaction parameters such as pH, the initial concentration of the sacrificial agent, and the amount of photocatalyst were systematically investigated through response surface methodology. The results showed that the photocatalytic performance was strongly affected by higher levels of sacrificial agent concentration (70.0 mM EDTA) and by low amounts of photocatalyst SEZT1 (0.01 g/L as catalyst loading) at alkaline conditions (pH 9.0) after 5 h of UV irradiation (6140.04 μmol), using Eu-doped strontium zirconate titanate as semiconductor.
本研究旨在研究陶瓷化合物 SrEuZrTiO（SEZT1）在紫外/可见辐射下的光催化活性，使用乙二胺四乙酸（EDTA）作为牺牲剂来产生 H。通过响应面法系统研究了反应参数如 pH 值、牺牲剂初始浓度和光催化剂用量对光催化性能的影响。结果表明，在碱性条件（pH 9.0）下，在 5 小时的 UV 照射（6140.04 μmol）后，较高水平的牺牲剂浓度（70.0 mM EDTA）和少量的光催化剂 SEZT1（催化剂负载量为 0.01 g/L）对光催化性能有很强的影响，使用掺铕的锶锆钛酸盐作为半导体。
