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Highly-efficient visible-light-driven photocatalytic H2 evolution integrated with microplastic degradation over MXene/ZnxCd1-xS photocatalyst
Summary
Scientists have developed a new material that uses sunlight to break down plastic bottle waste (PET) while simultaneously producing clean hydrogen fuel, essentially turning a pollution problem into an energy solution. This matters because microplastics are increasingly found in our water, food, and even our bodies, and this technology could help remove plastic waste from the environment before it breaks down into the tiny particles linked to health concerns, all while generating a useful, clean energy source as a bonus. It's still early-stage lab research, but it points toward a promising way to tackle plastic pollution and clean energy needs at the same time.
The development of highly-efficient photocatalyst for H2 production integrated with microplastic degradation is significant to meet the demand for clean energy and resolve "white pollution". Herein, a series of MXene/ZnxCd1-xS photocatalysts were successfully fabricated for H2 evolution integrated with degradation of polyethylene terephthalate (PET). The resultant photocatalysts exhibited excellent photocatalytic performance, and the best photocatalytic H2 evolution rate can reach 14.17 mmol·g-1·h-1 in alkaline PET alkaline solution. What's more, the PET was also converted to the useful organic micromolecule, including glycolate, acetate, ethanol, etc. The highly-efficient photocatalytic performance of MXene/ZnxCd1-xS photocatalysts can be attributed to the enhanced separation ability of photocarriers and optimum band structure with enhanced oxidation capacity of valence band. Finally, the photocatalytic mechanism was investigated in detail. Overall, this work supplied a new useful guidance for solving the energy problem and microplastic pollution issues, simultaneously.