Abstract
As pesticides are widely found in water, it is still a challenge to find an economical and effective technology to remove organophosphorus pesticides. Therefore, A composite with silver nanoparticles modified graphene oxide-supported graphitic carbon nitride microflowers ternary heterojunction (Ag@CNG) was synthesized by facile hydrothermal process. A novel composite system composed of photocatalysis and sulfite activation under visible light (Vis/Ag@CNG/sulfite) was constructed to realize the efficient removal of pesticides dimethoate (DT). Characterization results showed that the surface plasmon resonance (SPR) effect and ternary heterojunction could promote the photo-electrons transfer, and enhance the absorption of visible light. Moreover, the by-product sulfite added could be activated by holes to introduce novel SO4−, and obviously improve the decomposition of DT. Additionally, effects of operating parameters and supporting electrolyte on the degradation of DT were also detailed. Especially, the degradation pathways and mechanism of DT were revealed in depth through trapping experiments and GC–MS analysis combined with theoretical calculation. The toxicity evolution of products was also comprehensively evaluated. It was proved by degradation of different pollutants that the new composite system presented a great application potential for refractory and deleterious pollutants removal in water.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
