文献类型：期刊文献

英文题名：Interfacial self-assembly of preformed colloidal nanocatalysts for pyrolysis upcycling of waste plastic

作者：Zhang, Yingrui[1];He, Su[1,2];Yuan, Zhu[1];Li, Chunchun[1,4];Qiao, Yuanting[3];Bell, Steven E. J.[1];Gao, Ningbo[2];Xu, Yikai[5,6];Wu, Chunfei[1]

机构：[1]Queens Univ Belfast, Sch Chem & Chem Engn, Univ Rd, Belfast BT7 1NN, North Ireland;[2]Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China;[3]Swansea Univ, Chem Engn Dept, Bay Campus, Swansea SA1 8EN, Wales;[4]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[6]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2025

卷号：459

外文期刊名：CATALYSIS TODAY

收录：;EI(收录号：20252618659203);WOS:【SCI-EXPANDED(收录号:WOS:001519886000002)】；

基金：Yikai Xu acknowledges the Young Scientists Fund of the National Natural Science Foundation of China 22402060, Science and Technology Commission of Shanghai Municipality (grant No.24DX1400200) , Natural Science Foundation of Shanghai (24ZR1416700) for support. Chunchun Li acknowledges the Shanghai Pujiang Program 23PJ1409000 for support. Chunfei Wu acknowledges the European Union's Horizon 2020 Research Innovation Program under Marie Sk l odowska-Curie grant agreement No 823745. Yingrui Zhang acknowledges the Chinese Scholarship Council 202008370188 for support.

语种：英文

外文关键词：Interfacial self-assembly; Waste plastics; Pyrolysis; Carbon nanotube

摘要：Catalytic pyrolysis of waste plastics offers a sustainable approach to transform plastic waste into valuable carbon nanomaterials such as carbon nanotubes. Conventional methods for catalyst preparation provides limited control over catalyst morphology and loading. In addition, the powder catalysts remain entangled with the product carbonaceous materials and are difficult to separate. To mitigate these challenges, here, we present the first example of an interfacial self-assembly based approach for the construction of bulk catalysts with well-defined nanoscale morphologies for catalytic pyrolysis. The versatility of the self-assembly approach allowed us to deposit model Fe3O4 catalyst nanoparticles onto various types of supporting materials (S304, Ni, Ti, and Cu) to systematically investigate their impact on catalytic efficiency. Our studied revealed that CNT formation is influenced significantly by substrate-introduced effects. Among the tested supports, S304 system offered the highest selectivity for CNT growth, giving a carbon yield with a value of 207 mg/g plastic. While Ni and Ti generated more carbon products but with lower CNT mass ratio. Importantly, the self-assembled catalyst system also enables facile separation of carbon products from the support, offering a practical advantage over conventional powder-based systems. More broadly, our approach provides a versatile platform for designing robust and efficient catalysts with potential applications beyond plastic upcycling.