Obtaining clean hydrogen from waste plastics

Waste plastics hold potential as a hydrogen feedstock, but the key challenge lies in efficiently obtaining hydrogen with a minimal carbon footprint. A recent study published in One Earth by Zhang et al. showcases a carbon nanotube (CNT)-based catalyst capable of achieving high yields of hydrogen per gram of plastic while minimizing CO2 emissions. Waste plastics hold potential as a hydrogen feedstock, but the key challenge lies in efficiently obtaining hydrogen with a minimal carbon footprint. A recent study published in One Earth by Zhang et al. showcases a carbon nanotube (CNT)-based catalyst capable of achieving high yields of hydrogen per gram of plastic while minimizing CO2 emissions. Innovative carbon nanotubes-bridging strategy valorizes plastic waste into high-quality H2-rich syngas while suppressing CO2 emissionsZhang et al.One EarthMay 6, 2024In BriefPlastic waste is creating a variety of socio-environmental problems. Catalytic steam reforming holds promise as a method to upcycle plastic waste into H2-rich gas, but a large quantity of CO2 is inevitably released. The availability of high-performance bifunctional catalysts to boost the yield of H2 while reducing CO2, however, remains limited. Here we synthesized a carbon nanotubes-bridging nanocomposite by integrating Ni nanoparticles with HY zeolite. Upcycling polyethylene by this new nanocomposite can achieve a high H2 yield of 104.37 mmol/gplastic and a 77% reduction in CO2 emissions. Full-Text PDF