摘要
废塑料的回收利用是降低环境污染和减少资源浪费的有效途径之一,与传统的机械循环和化学循环回收相比,近年来新兴的光催化和电催化废塑料升级再造高附加值化学品技术因其反应条件温和、效率高,且能够利用可再生能源(太阳能、风能等)驱动反应发生,有望实现能源和化学品的脱石化资源、低碳绿色和分布式发展,符合“双碳”发展理念,迅速得到学者们的广泛关注和探讨。综述了近年来有关光催化和电催化废塑料升级再造高附加值化学品的最新研究进展,重点讨论了催化剂类型对产物类型和产率的影响以及不同催化剂的光催化和电催化反应路径和机理,最后针对目前技术存在的问题提出开发高效光/电催化剂以提升高附加值产物选择性和产率、理论模拟结合原位表征技术探究光/电催化反应机理、开发高效催化反应设备是今后光/电催化废塑料升级再造高附加值化学品研究的主要方向。
The recycling and utilization ofplastic wastes is one of the effective ways to reduce environmental pollution and resource waste.Compared to the traditional mechanical cycle and chemical cycle recycling,the newly emerging photocatalytic and electrocatalytic waste plastic upcycling high value-added chemical technologies have aroused widespread attention due to their mild reaction conditions,high efficiency,and can use renewable energy to drive the reactions.It is expected to realize the circumvention resources of fossil fuel and chemicals development,which is in line with the carbon peaking and carbon neutrality goals.Herein,the latest research progress on photocatalytic and electrocatalytic upcycling of high value-added chemicals from waste plastics in recent years was reviewed,with emphasis on the effects of catalyst types on product types and yields,as well as the reaction paths and mechanisms of different catalysts.Ultimately,in view of the problems with these current technologies,points out the main research directions in future,including the development of efficient photo-/electrocatalytic catalysts to improve the selectivity and yield of high value-added products,theoretical simulation combined with in-situ characterization technologies to explore the mechanisms of catalytic reactions,and the development of efficient catalytic reaction equipment.
作者
刘睿琦
孙善富
程鹏飞
王莹麟
郝熙冬
LIU Ruiqi;SUN Shanfu;CHENG Pengfei;WANG Yinglin;HAO Xidong(School of Aerospace Science and Technology,Xidian University,Xi’an 710126,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2024年第20期303-309,共7页
Materials Reports
基金
国家自然科学基金(22205169)。
关键词
废塑料
光催化
电催化
升级再造
高值化学品
plastic wastes
photocatalysis
electrocatalysis
upcycling
high value-added chemicals
