从塑料原料生产太阳能燃料的可持续方法
Subhajit Bhattacharjee1, Chengzhi Guo2, Erwin Lam1
1Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
Journal of the American Chemical Society
|September 6, 2023
概括
这项研究引入了化学酶光变,一种利用酶和太阳能将聚塑料转化为 (H2) 和有价值的化学物质的新方法. 这种可持续的工艺为传统生产提供了成本效益和环保的替代方案.
科学领域:
- 催化剂
- 生物技术
- 材料科学
- 可再生能源
背景情况:
- 塑料废物,尤其是聚烯,对环境构成重大挑战.
- 目前的塑料再循环方法往往需要苛刻的条件,
- 从塑料废物中有效和清洁地生产高价值的化学品和气仍然是一个关键目标.
研究的目的:
- 开发一种清洁,节能的聚塑料回收工艺.
- 用太阳能进行塑料废物的催化转化.
- 从聚薄膜和纳米塑料中生产和增值化学品.
主要方法:
- 化学酶光转化:将酶预处理与太阳能驱动的转化相结合.
- 使用聚薄膜和纳米塑料作为基板.
- 使用在TiO2纳米颗粒上固定的化二氧化碳催化剂进行二氧化碳转化.
主要成果:
- 实现了高产量 (∼103-104 μmol gsub>−1) 和高催化活性 (>500 μmol gcat−1 h−1).
- 在各种聚形式的上循环中表现出多功能性.
- 使用酶处理的塑料作为电子捐赠者成功将二氧化碳转化为合成气体.
- 技术经济分析表明,气生产具有成本竞争力的潜力.
结论:
- 化学酶光变是一种多功能且高效的塑料上循环方法.
- 在温和的条件下生产和有价值的化学物质.
- 这种方法有可能显著降低气生产成本和二氧化碳排放.
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