Selective oxidation of styrene over graphitic carbon nitride (C3N4) supported nano Co3O4 particles catalyst and the mechanism investigation

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces Pub Date : 2025-10-01 DOI:10.1016/j.surfin.2025.107780

Chaoyang Wang , Xin Ma , Yun Zhao , Miaomiao Jin , Pingyi Zhang , Haifang Mao , Jibo Liu

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Abstract

Aromatic aldehydes and epoxides, synthesized through catalytic oxidation of olefins, are important intermediates in pharmaceuticals, fragrances, and resins. However, efficient and selective oxidation of olefins remains a significant challenge. In this work, a Co₃O₄ nanoparticle-loaded graphitic carbon nitride (C₃N₄) catalyst was developed for the selective oxidation of styrene using tert‑butyl hydroperoxide (TBHP) as the oxidant. The Co-C₃N₄–15 catalyst achieved a styrene conversion of 94.6 % and product selectivity of 96.4 %. DFT calculations indicated that the activation energy for styrene oxide formation was significantly lower compared to benzaldehyde, which explained the higher selectivity for styrene oxide. This work demonstrates the potential of combining non-precious metal catalysts and green oxidants for sustainable chemical processes, offering a pathway to reduce reliance on high-energy industrial methods.

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负载纳米Co3O4的石墨氮化碳（C3N4）催化剂选择性氧化苯乙烯及其机理研究

芳香族醛和环氧化物是通过烯烃催化氧化合成的，是医药、香料和树脂的重要中间体。然而，烯烃的高效和选择性氧化仍然是一个重大挑战。本文以过氧化叔丁基（TBHP）为氧化剂，制备了一种载Co3O4纳米颗粒的石墨氮化碳（C3N4）催化剂，用于苯乙烯的选择性氧化。Co-C3N4-15催化剂的苯乙烯转化率为94.6%，产物选择性为96.4%。DFT计算表明，与苯甲醛相比，氧化苯乙烯生成的活化能明显较低，这解释了氧化苯乙烯的选择性较高。这项工作证明了将非贵金属催化剂和绿色氧化剂结合起来用于可持续化学过程的潜力，为减少对高能量工业方法的依赖提供了一条途径。

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)