Microwave-initiated catalytic deconstruction of plastic waste into hydrogen and high-value carbons
Microwave-initiated catalytic deconstruction of plastic waste into hydrogen and high-value carbons
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DOI：
10.1038/s41929-020-00518-5
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发表时间：
2020-10-12
期刊：
影响因子：
37.8
通讯作者：
Edwards, Peter
中科院分区：
文献类型：
--
作者：
Jie, Xiangyu;Li, Weisong;Edwards, Peter
塑料垃圾无处不在的挑战导致了现代描述符塑料球来代表人造塑料环境和生态系统。在这里，我们报告了一种直接快速的方法，用于催化分解各种塑料原料为氢气和高价值的碳。我们使用微波与丰富和廉价的铁基催化剂一起作为微波干扰器来启动催化解构过程。一步法通常需要30-90秒将机械粉碎的商业塑料样品转化为氢气和（主要是）多壁碳纳米管。实现了55.6 mmol g（塑料）（-1）的高氢气产率，其中从解构的塑料中提取了超过97%的理论氢气质量。该方法在广泛使用的现实世界塑料废物上得到了证明。这一概念验证的进展突出了塑料废物本身作为生产氢气和高价值碳材料的宝贵能源原料的潜力。
The ubiquitous challenge of plastic waste has led to the modern descriptor plastisphere to represent the human-made plastic environment and ecosystem. Here we report a straightforward rapid method for the catalytic deconstruction of various plastic feedstocks into hydrogen and high-value carbons. We use microwaves together with abundant and inexpensive iron-based catalysts as microwave susceptors to initiate the catalytic deconstruction process. The one-step process typically takes 30-90 s to transform a sample of mechanically pulverized commercial plastic into hydrogen and (predominantly) multiwalled carbon nanotubes. A high hydrogen yield of 55.6 mmol g(plastic)(-1) is achieved, with over 97% of the theoretical mass of hydrogen being extracted from the deconstructed plastic. The approach is demonstrated on widely used, real-world plastic waste. This proof-of-concept advance highlights the potential of plastic waste itself as a valuable energy feedstock for the production of hydrogen and high-value carbon materials.