Efficient CO2 Reduction to HCOOH with High Selectivity and Energy Efficiency over Bi/rGO Catalyst,Small Methods

当前位置： X-MOL 学术 › Small Methods › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Efficient CO2 Reduction to HCOOH with High Selectivity and Energy Efficiency over Bi/rGO Catalyst
Small Methods ( IF 10.7 ) Pub Date : 2020-02-25 , DOI: 10.1002/smtd.201900846
Yan‐Xin Duan ₁ , Kai‐Hua Liu ₁ , Qi Zhang ₂ , Jun‐Min Yan _{1,

3} , Qing Jiang ₁

Affiliation

The electroreduction of carbon dioxide (CO₂) to value‐added fuels is of great significance to meet the ever‐increasing energy and environmental challenges. So far, desirable selectivity and Faradaic efficiency for CO₂ reduction can be obtained over most electrocatalysts. However, improving cathodic energy efficiency is still neglected in research. Herein, a facile reduction method is first presented to synthesize the ultrafine non‐noble bismuth (Bi) nanoparticles anchored on rGO (Bi/rGO). As expected, the Bi/rGO catalyst exhibits excellent electrochemical performance on CO₂ reduction to form formic acid (HCOOH), with very high Faradaic efficiency (up to 98%), favorable stability (over 12 h), and especially outstanding cathodic energy efficiency (up to 71%). Further, density functional theory (DFT) calculations are performed to investigate the possible reaction mechanism for reduction of CO₂ to HCOOH.

中文翻译：

在Bi / rGO催化剂上以高选择性和高能效高效还原HCOOH的CO2

将二氧化碳（CO ₂）电还原为增值燃料对于应对日益增长的能源和环境挑战具有重要意义。到目前为止，可以在大多数电催化剂上获得理想的选择性和法拉第效率以降低CO ₂。然而，在研究中仍然忽略了提高阴极能量效率。在此，首先提出了一种简便的还原方法来合成锚定在rGO（Bi / rGO）上的超细非贵金属铋（Bi）纳米粒子。如预期的那样，Bi / rGO催化剂对CO ₂表现出优异的电化学性能还原成甲酸（HCOOH），具有很高的法拉第效率（高达98％），良好的稳定性（超过12小时），尤其是出色的阴极能效（高达71％）。此外，进行密度泛函理论（DFT）计算以研究将CO ₂还原为HCOOH的可能反应机理。

更新日期：2020-02-25

点击分享查看原文

点击收藏

阅读更多本刊最新论文