过硫酸盐协同原位生成 HO 强化 FeS/FeO/有机物光芬顿和光催化降解卡马西平。
Synergistic improving photo-Fenton and photo-catalytic degradation of carbamazepine over FeS/FeO/organic acid with HOin-situ generation.
机构信息
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China; The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province, Kunming, 650500, PR China; The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province, Kunming, 650500, PR China.
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, PR China; The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province, Kunming, 650500, PR China; The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province, Kunming, 650500, PR China.
出版信息
Chemosphere. 2022 Nov;307(Pt 4):136199. doi: 10.1016/j.chemosphere.2022.136199. Epub 2022 Aug 28.
Herein, a heterogeneous photo-Fenton and photo-catalytic system was constructed using oxide pyrite (FeS/FeO) mineral and organic acids including tartaric acid (TA), ascorbic acid (AA), and citric acid (CA). In the proposed system, FeS/FeO can be successfully activated through irradiation to generate photogenerated carriers, which generated HOin-situ through the reduction reactions between e and O. The addition of organic acids enhanced the dissolution of iron from FeS/FeO. Based on the iron and in-situ generated HO, •OH was produced through a photo-Fenton reaction. Furthermore, h, e, and •O, which were generated through the photo-catalytic activation of FeS/FeO, also played a certain role in the degradation of carbamazepine (CBZ). Therefore, the synergistic photo-Fenton and photo-catalytic reaction improved the degradation of CBZ, with the degradation efficiencies of 86%, 62%, and 68% in FeS/FeO/TA, FeS/FeO/AA, and FeS/FeO/CA systems, respectively. This investigation provides an innovative strategy for the removal of organic pollutants using natural minerals.
在此，使用氧化硫铁矿（FeS/FeO）矿物和包括酒石酸（TA）、抗坏血酸（AA）和柠檬酸（CA）在内的有机酸构建了一种多相光芬顿和光催化体系。在提出的体系中，通过辐照可以成功地激活 FeS/FeO 以产生光生载流子，通过电子和 O 之间的还原反应原位生成 HO。有机酸的添加增强了 FeS/FeO 中铁的溶解。基于铁和原位生成的 HO，通过光芬顿反应产生 •OH。此外，通过 FeS/FeO 的光催化激活产生的 h、e 和 •O 也在卡马西平（CBZ）的降解中发挥了一定作用。因此，协同的光芬顿和光催化反应提高了 CBZ 的降解效率，在 FeS/FeO/TA、FeS/FeO/AA 和 FeS/FeO/CA 体系中的降解效率分别为 86%、62%和 68%。该研究为利用天然矿物去除有机污染物提供了一种创新策略。
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