催化作用
煅烧
纳米颗粒
材料科学
选择性
金属
碳纤维
二茂铁
化学工程
氧化物
无机化学
水溶液
纳米技术
化学
有机化学
电化学
冶金
电极
物理化学
复合数
复合材料
工程类
作者
Yuqing Liu,Yiming Wang,Xin Chen,Wenqian Yu,Qian Zhang,Ceng-Ceng Du,Tong Jiang,Chengrui Li,Qian Zhang,Jiali Jiang,Rongxiu Guo,Hong Sun
标识
DOI:10.1002/slct.202400957
摘要
Abstract The nanoconfinement approach for constructing ultra‐small nanoparticles has been effectively utilized in the development of non‐precious metal catalysts. Herein, the catalyst precursor was prepared by host‐guest assembly method, using PCN‐222 as the host and 1,1′‐bis(diphenylphosphino) ferrocene (DPPF) as the guest. After calcination, the sub‐2 nm iron oxide nanoparticles within a phosphorus‐nitrogen co‐doped carbon matrix (Fe 3 O 4 @P/N‐CDCM) was obtained. Benefiting from the nanoconfinement effect, the sub‐2 nm Fe 3 O 4 nanoparticles were uniformly dispersed on the P/N‐CDCM matrix. As a representative application, Fe 3 O 4 @P/N‐CDCM‐600 showed remarkable catalytic activity in the reduction of various nitroaromatic compounds. Under ambient conditions, the efficient reduction of nitro compounds in aqueous solution led to excellent conversion rates (96–99 %) and selectivity (99 %) within 45 minutes. Additionally, the catalyst maintained high efficiency over 5 cycles without experiencing a noticeable decrease in activity. This work provides an innovative and cost‐effective strategy for fabricating highly dispersed non‐precious metal nanoparticles.
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