用于中性水中CO <sub>2</sub>的电微生物转化的整体水分解多金属氧酸盐催化剂<a href="#fn1" title="提供电子补充信息（ESI）。参见DOI：10.1039 / c8ta01902a">†</a>,Journal of Materials Chemistry A

当前位置： X-MOL 学术 › J. Mater. Chem. A › 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.)

用于中性水中CO ₂的电微生物转化的整体水分解多金属氧酸盐催化剂 †
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-05-14 00:00:00 , DOI: 10.1039/c8ta01902a
Meng Wang _{1,

2,

3,

4,

5} , Wei Zhong _{1,

2,

3,

4,

5} , Shuangshuang Zhang _{1,

2,

3,

4,

5} , Rongji Liu _{1,

2,

3,

4,

5} , Jianmin Xing _{1,

2,

3,

4,

5} , Guangjin Zhang _{1,

2,

3,

4,

5}

Affiliation

通过使用消耗氢和CO _2的细菌来生存，二氧化碳的微生物转化是将CO ₂直接转移到生物质中的有希望的替代方法。这种混合系统的效率在很大程度上取决于用于制氢的电催化剂。在这里，我们证明了混合的无贵金属的不含钴/铜的多金属氧酸盐/碳布（Cu ₆ Co ₇ / CC）杂化物在中性pH值下具有优异的作为水分解前电催化剂的活性，并且具有析氢反应（HER）和氧气在10 mA cm ^-2时390 mV和500 mV的演化反应（OER）过电势以及96 mV dec ^-1和147 mV dec ^-1的Tafel斜率，分别。已经研究了涉及氧化和还原过程的催化剂的性质。电极的长期活性也得到了证明。在电解过程中产生的H ₂ O ₂量可忽略不计。已经测试了使用野生型富营养罗汉果和生物相容性Cu ₆ Co ₇ / CC预催化剂作为阳极和阴极材料对CO _2的固定作用。阴极消耗的氢气被细菌消耗，以使其存活和生长，其中超过50％的输入电能转移到生物质中。的太阳能到生物质的效率η _SCE在6天的实验中可达到9.9±0.5％，几乎是天然植物的10倍，显示了这种Cu ₆ Co ₇ / CC / R. eutropha系统的高性能。

"点击查看英文标题和摘要"

An overall water-splitting polyoxometalate catalyst for the electromicrobial conversion of CO2 in neutral water†

Electromicrobial conversion of carbon dioxide is a promising alternative to the direct transfer of CO₂ into biomass by using bacteria that consume hydrogen and CO₂ for living. The efficiency of such a hybrid system strongly depends on the electrocatalyst used for hydrogen production. Here we evidence that a mixed noble metal free Co/Cu-containing polyoxometalate/Carbon Cloth (Cu₆Co₇/CC) hybrid possesses excellent activity as a water splitting pre-electrocatalyst at neutral pH, with Hydrogen Evolution Reaction (HER) and Oxygen Evolution Reaction (OER) overpotentials of 390 mV and 500 mV at 10 mA cm⁻² and Tafel slopes of 96 mV dec⁻¹ and 147 mV dec⁻¹, respectively. The nature of the catalysts involved for both the oxidation and reduction processes has been investigated. The long-term activity of the electrodes is also demonstrated. A negligible amount of H₂O₂ is produced during the electrolysis process. CO₂ fixation with wild-type R. eutropha and the biocompatible Cu₆Co₇/CC precatalyst as both anode and cathode materials has been tested. The hydrogen produced on the cathode is consumed by the bacteria for living and growth with more than 50% of input electrical energy transferred into biomass. The solar-to-biomass efficiency η_SCE can reach 9.9 ± 0.5% in a 6-day experiment, almost 10 times higher than those of natural plants, showing the high performance of this Cu₆Co₇/CC/R. eutropha system.

更新日期：2018-05-14

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11