Abstract:
With the rapid development of industrial and agricultural production, the detection frequency and concentration levels of emerging contaminants represented by pesticides, antibiotics, and heavy metals in the environment have continued to rise, posing significant threats to ecological security and human health. To address these challenges, this study focuses on the efficient catalytic degradation of emerging contaminants and constructs two types of functionalized nanomaterial systems—photocatalysis and persulfate activation—targeting two typical scenarios: aquatic environments and soil–water coexisting/agricultural product surfaces.
For the aquatic photocatalysis scenario: Polymerized graphitic carbon nitride (g-C3N4) was prepared via a thermal polycondensation method, and its morphology and band structure were optimized by adjusting the precursor ratio. Platinum single-atom modified carbon nitride (Pt-SA/C3N4) was synthesized using an impregnation–thermal reduction strategy. Ti3C2/In4SnS8 and Ti3C2 MXene/WO3 composite photocatalysts were fabricated via in situ hydrothermal and solvothermal methods, respectively, to construct heterointerfaces that promote photogenerated charge carrier separation.
For the soil–water coexisting and agricultural product surface scenarios: Iron single-atom modified carbon nitride (Fe SA/C3N4) was synthesized using a pyrolysis–coordination strategy. S-CuMnO mixed oxide was prepared by in situ calcination polymerization. Three-dimensional molybdenum disulfide nanoflowers (3D MoS2) were self-assembled via a hydrothermal method for persulfate activation.
Biography:
Dr. Xue Liu currently works at the Institute of Tobacco Research, Chinese Academy of Agricultural Sciences as an associate researcher. She has been dedicated to seeking feasible applications of nano-materials in environmental pollutants analysis and remediation. She obtained her PhD degree from China Agricultural University in 2018.)
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