Photocatalytic oxidative coupling of methane: Reaction mechanisms and design and performances of photocatalysts

PEI Xinya; SONG Hui; YANG Jiangfeng

doi:10.12434/j.issn.2097-2547.20260128

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Photocatalytic oxidative coupling of methane: Reaction mechanisms and design and performances of photocatalysts

更新时间：2026-06-11

- Photocatalytic oxidative coupling of methane: Reaction mechanisms and design and performances of photocatalysts
- Pages: 1-10(2026)
- 作者机构：
  
  1.天津大学材料科学与工程学院，天津 300072
  2.太原理工大学化学与化工学院，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20260128
  CLC： TQ032;O643.32
- Received：18 March 2026，
  
  Revised：2026-04-02，
  
  Online First：08 June 2026，
- 稿件说明：
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裴欣雅,宋辉,杨江峰.光催化甲烷氧化偶联：反应机理和光催化剂设计及性能[J].低碳化学与化工,

PEI Xinya,SONG Hui,YANG Jiangfeng.Photocatalytic oxidative coupling of methane: Reaction mechanisms and design and performances of photocatalysts[J].Low-Carbon Chemistry and Chemical Engineering,
裴欣雅,宋辉,杨江峰.光催化甲烷氧化偶联：反应机理和光催化剂设计及性能[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20260128.

PEI Xinya,SONG Hui,YANG Jiangfeng.Photocatalytic oxidative coupling of methane: Reaction mechanisms and design and performances of photocatalysts[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20260128.

摘要

甲烷氧化偶联（OCM）反应实现了由最简单的烷烃直接构建C—C键生成C

烃类化合物，是甲烷高值化利用的理想路径之一。光催化反应以太阳能为驱动力，条件温和且绿色环保，为甲烷选择性活化提供了新思路。光照下，光生载流子在半导体表面生成并分离，通过界面迁移与表面反应构建特定氧化还原环境，驱动目标活性物种生成，实现C—H键定向活化与氧化程度精细调控。光生空穴与活性氧自由基协同作用，使得在传统热催化下难以实现的甲烷高选择性转化成为可能。系统梳理了当前光催化OCM反应的研究进展，重点分析了C—H键活化机理、自由基偶联路径，提出了原位表征、同位素标记和密度泛函理论计算相结合的机理研究方法，分析了本征半导体催化剂、负载型或助催化剂改性催化剂以及基于缺陷工程调控的催化剂催化性能，以期为提升目标产物产率与选择性、实现太阳能驱动甲烷高效转化提供理论依据与设计思路。

Abstract

The oxidative coupling of methane (OCM) reaction enables the direct construction of C—C bonds from the simplest alkane to produce C

hydrocarbons

representing an ideal pathway for the high-value utilization of methane. Photocatalytic reactions

driven by solar energy

provide a new approach for the selective activation of methane with mild and environment

ally friendly conditions. Under light irradiation

photogenerated charge carriers are generated and separated on the semiconductor surface. Through interfacial migration and surface reactions

a specific redox environment is established to drive the generation of target activation species

achieving directional activation of C—H bonds and precise control of oxidation degree. The synergistic effect of photogenerated holes and reactive oxygen species makes it possible to achieve highly selective conversion of methane

which is difficult to achieve under traditional thermal catalysis. Recent research progresses on photocatalytic OCM reaction were systematically summarized

with a focus on analyzing the activation mechanisms of C—H bonds and radical coupling pathways. A mechanism research method combining in-situ characterization

isotope labeling and density functional theory calculation was proposed

and the catalytic performances of intrinsic semiconductor catalysts

supported or co-catalyst modified catalysts

and catalysts based on defect engineering regulation were analyzed

in order to provide a theoretical basis and design strategies for improving yield and selectivity of target products and achieving high-efficiency methane conversion driven by solar energy.

关键词

Keywords

references

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