我组康振辉教授与广州大学合作在Nanoscal上发表论文

题目：

Highly selective conversion of CO₂ to C₂H₆ ongraphene modified chlorophyll Cu through multielectron process for artificial photosynthesis†

作者：

Tongshun Wu, *a Cheng Zhu, b Dongxue Han,a,c Zhenhui Kang *b andLi Niua,c

单位：

^aCentre for Advanced Analytical Science, c/o School of Chemistry and ChemicalEngineering, Guangzhou University, Guangzhou 510006, P.R. China.

^bJiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Instituteof Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren’aiRoad, Suzhou, 215123 Jiangsu, PR

^cState Key Laboratory of Electro****ytical Chemistry, c/o Engineering Laboratory forModern Analytical Techniques, Changchun Institute of Applied Chemistry, ChineseAcademy of Sciences, Changchun 130022, Jilin, China

摘要：

Artificial photosynthesis is a promising strategy for converting carbon dioxide into hydrocarbon fuelsthrough solar energy as it is clean, economical and environmentally friendly. Herein, we developed a

selective and stable photocatalyst for CO₂ photocatalytic reduction into C₂H₆ through a multi-electrontransfer pathway without the external sacrificial regents. The core component of this composite catalystwas extracted from a silkworm excrement and modified to make chlorophyll Cu (Chl-Cu), which contained a porphyrin structure as an antenna for light absorption and a Cu cation as an active centre. Wefound that C₂ hydrocarbons such as C₂H₂, C₂H₄, and C₂H₆ tended to generate on chlorophyll-a/graphene. After substituting Mg²⁺ with Cu²⁺ cations in the centre of the porphyrin and modifying with graphene, only C₂H₆ was detected in the 18 hours reaction. This photocatalyst presented an outstandingactivity and selectivity for the photocatalytic CO₂ reduction (CO₂RR) with a C₂H₆ yield rate at 68.23 µmolm⁻² h⁻¹ under visible light irradiation and an apparent quantum efficiency of 1.26% at 420 nm. In thissystem, the porphyrin rings were excited to produce electron–hole pairs by light. The photo-inducedholes oxidized water to produce oxygen while graphene worked as an adsorption centre and electronacceptor for the CO₂ reduction.

影响因子：

6.895

分区情况：

1区

链接：  

https://pubs.rsc.org/en/content/articlelanding/2019/NR/C9NR07824J#!divAbstract