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Semiconducting mineral induced photochemical conversion of PAHs in aquatic environment: Mechanism study and fate prediction by Zhengqing Cai; Fuquan Yang; Yanyu Song; Yongdi Liu; Wen Liu; Qilin Wang; Xianbo Sun is a Environmental Science article available to read on EtoBox.
What is Semiconducting mineral induced photochemical conversion of PAHs in aquatic environment: Mechanism study and fate prediction about?
Semiconducting minerals (such as iron sulfides) are highly abundant in surface water, but their influences on the natural photochemical process of contaminants are still unknown. By simulating the natural water environment under solar irradiation, this work comprehensively investigated the photochemical processes of anthracene (a typical Polycyclic Aromatic Hydrocarbons) in both freshwater and seawater. The results show that the natural pyrite (NP) significantly promotes the degradation of anthracene under solar illumination via 1) NP induced photocatalytic degradation of anthracene, and 2) Fenton reaction due to the NP induced photocatalytic generation of H2O2. The material characterization and theoretical calculation reveal that the natural impurity in NP enlarges its band gap, which limits the utilization of solar spectra to shorter wavelength. The contribution of generated reactive intermediates on anthracene degradation follows the order of 1O2 > OH > O2 − in freshwater and O2 − > 1O2 > OH in seawater. The photochemically generated H2O2 is a vital source for OH generation (from Fenton reaction). The steady-state concentration of OH, 1O2 and O2 − in freshwater were monitored as
Who reads Semiconducting mineral induced photochemical conversion of PAHs in aquatic environment: Mechanism study and fate prediction?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Zhengqing Cai; Fuquan Yang; Yanyu Song; Yongdi Liu; Wen Liu; Qilin Wang; Xianbo Sun
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)