Selective aerobic epoxidation of allylic alcohols and olefins presents a promising solution to the modern chemical industry. However, the development of non-noble metal catalysts with superior catalytic performance for this reaction remains a significant challenge. This study introduces a plasmonic photothermal-catalytic system centered around nano LaSrCoNiO6 (LSCNi-N) catalyst, enabling the epoxidation of cinnamyl alcohol and styrene mediated by LSPR effect under visible light illumination (>420 nm). This catalyst exhibits superior epoxidation catalytic performance, with selectivities of up to 72.3 % in a 93.4 % conversion of cinnamyl alcohol and 91.8 % selectivity of styrene oxide at almost 100 % conversion of styrene. Mechanistic studies reveal that the high selectivity derives from the in-situ photochemical formation of H2O2 mediated by the localized surface plasmon resonance effect of LSCNi-N and hole scavenger effect of cinnamyl alcohol. These findings highlight the potential of designing plasmonic transition-metal oxidic catalysts to overcome challenges in selectively synthesizing fine chemicals through visible light catalysis.

中文翻译：

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局部表面等离子体共振效应介导的 H2O2 原位光化学形成，在 LaSrCoNiO6 纳米颗粒上实现高环氧化性能


烯丙基醇和烯烃的选择性好氧环氧化为现代化学工业提供了一种很有前途的解决方案。然而，为该反应开发具有优异催化性能的非贵金属催化剂仍然是一个重大挑战。本研究介绍了一种以纳米 LaSrCoNiO6 （LSCNi-N） 催化剂为中心的等离子体光热催化系统，能够在可见光照射 （>420 nm） 下通过 LSPR 效应介导的肉桂醇和苯乙烯的环氧化。该催化剂具有优异的环氧化催化性能，在肉桂醇转化率为 93.4% 时选择性高达 72.3%，在苯乙烯转化率接近 100% 时，氧化苯乙烯选择性高达 91.8%。机理研究表明，高选择性来源于 LSCNi-N 的局部表面等离子体共振效应和肉桂醇的空穴清除剂效应介导的 H 2 O 2 的原位光化学形成。这些发现突出了设计等离激元过渡金属氧化催化剂的潜力，以克服通过可见光催化选择性合成精细化学品的挑战。