High-yield electrochemical production of formaldehyde from CO2 and seawater

Kazuya Nakata, Takuya Ozaki, Chiaki Terashima, Akira Fujishima, Yasuaki Einaga

研究成果: Article査読

247 被引用数 (Scopus)

抄録

The catalytic, electrocatalytic, or photocatalytic conversion of CO 2 into useful chemicals in high yield for industrial applications has so far proven difficult. Herein, we present our work on the electrochemical reduction of CO2 in seawater using a boron-doped diamond (BDD) electrode under ambient conditions to produce formaldehyde. This method overcomes the usual limitation of the low yield of higher-order products, and also reduces the generation of H2. In comparison with other electrode materials, BDD electrodes have a wide potential window and high electrochemical stability, and, moreover, exhibit very high Faradaic efficiency (74 %) for the production of formaldehyde, using either methanol, aqueous NaCl, or seawater as the electrolyte. The high Faradaic efficiency is attributed to the sp 3-bonded carbon of the BDD. Our results have wide ranging implications for the efficient and cost-effective conversion of CO2. Boron is a diamond's best friend: A boron-doped diamond (BDD) electrode exhibited very high Faradaic efficiency (74 %) for the production of formaldehyde using either methanol, aqueous NaCl, or seawater as the electrolyte at room temperature and ambient pressure.

本文言語English
ページ(範囲)871-874
ページ数4
ジャーナルAngewandte Chemie - International Edition
53
3
DOI
出版ステータスPublished - 2014 1月 13

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)

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