Novel ZIF-8@CHs catalysts for photocatalytic degradation of tetracycline hydrochloride

A novel ZIF-8@CHs photocatalyst, which was generated using the metal organic framework ZIF-8 and intact chloroplasts (CHs) from Chlorella sp. in a one-pot synthesis, was used in this study for the first time to degrade tetracycline hydrochloride (TCH) through photocatalysis. The results of systematic characterization demonstrated that ZIF-8@CHs was successfully p0repared. Meanwhile, ZIF-8@CHs exhibited excellent photocatalytic performance and good adaptability. Under the condition of simulated sunlight, the high porosity ZIF-8 shell enabled CHs to maintain typical photosynthetic oxygen evolution behavior in vitro, and using CHs as the core produced significant ROS, significantly improving the efficiency of TCH photocatalytic degradation. In addition, the radical trapping test and EPR spectra proved that O2-, 1O2, and center dot OH were the key active species for TCH degradation. Eventually, the ZIF-8@CHs system can not only expand the new concept of organic pollutant degradation in water bodies, but also offer recommendations for live organ envelope modification..

Automated summary

In this study, a novel ZIF-8@CHs photocatalyst was synthesized using ZIF-8 and intact chloroplasts (CHs), and was successfully applied for the first time in the photocatalytic degradation of tetracycline hydrochloride (TCH). Characterization revealed the successful preparation of ZIF-8@CHs, which exhibited excellent photocatalytic performance and adaptability. Under simulated sunlight, the high porosity ZIF-8 shell allowed CHs to maintain photosynthetic behavior and produce reactive oxygen species (ROS), significantly enhancing the efficiency of TCH degradation.