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Updated: Jun 15, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

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配合ポリマーネットワークに閉じ込められた分子セルフアセンブリによる光電触媒CO2のメタノールへの還元

Yanjie Fang1, Yifan Gao1, Yingke Wen1

  • 1Department of Chemistry, Zhejiang University, Hangzhou 310058, China.

Journal of the American Chemical Society
|August 28, 2024
PubMed
まとめ

研究者は,効率的な太陽光駆動による二酸化炭素 (CO2) をメタノール (CH3OH) に還元するための新しいマクロポーラス結合ポリマーネットワーク (MCN) フォト電極を開発しました. この突破は高効率の変換と持続的な生産を実現し,再生可能燃料技術の有望な進歩を示しています.

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Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
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Wilhelm Rudolph Fittig discovered the pinacol coupling reaction in 1859. It is a radical dimerization reaction and involves the reductive coupling of aldehydes or ketones in the presence of hydrocarbon solvent to yield vicinal diols.
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