期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 38, 页码 15201-15210出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b06872
关键词
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资金
- Christian Doppler Research Association
- EPSRC (NanoDTC) [EP/L015978/1, EP/S022953/1]
- UCL [PR 16195]
- Austrian Federal Ministry for Digital and Economic Affairs
- National Foundation for Research, Technology and Development
- OMV Group
- Engineering and Physical Sciences Research Council [1819525] Funding Source: researchfish
- EPSRC [EP/P030467/1] Funding Source: UKRI
With over 8 billion tons of plastic produced since 1950, polymers represent one of the most widely used-and most widely discarded-materials. Ambient-temperature photoreforming offers a simple and low-energy means for transforming plastic waste into fuel and bulk chemicals but has previously only been reported using precious-metal- or Cd-based photocatalysts. Here, an inexpensive and nontoxic carbon nitride/nickel phosphide (CNxINi2P) photocatalyst is utilized to successfully reform poly(ethylene terephthalate) (PET) and poly(lactic acid) (PLA) to clean H-2 fuel and a variety of organic chemicals under alkaline aqueous conditions. Ni2P synthesized on cyanamide-functionalized carbon nitride is shown to promote efficient charge separation and catalysis, with a photostability of at least 5 days. The real-world applicability of photoreforming is further verified by generating H-2 and organics from a selection of nonrecyclable waste-including microplastics (polyester microfibers) and food-contaminated plastic-and upscaling the system from 2 to 120 mL while maintaining its efficiency for plastic conversion.
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