Highly Selective Conversion Of CO2 To C2H6 On Graphene Modified ...

Jump to main content Jump to site search Issue 47, 2019

• Previous Article
• Next Article

From the journal:

Nanoscale

Highly selective conversion of CO2 to C2H6 on graphene modified chlorophyll Cu through multi-electron process for artificial photosynthesis†

Tongshun Wu, *a Cheng Zhu, b Dongxue Han,ac Zhenhui Kang *b and Li Niuac Author affiliations

* Corresponding authors

a Centre for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P.R. China E-mail: [email protected]

b Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu, PR China E-mail: [email protected]

c State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China

Abstract

Artificial photosynthesis is a promising strategy for converting carbon dioxide into hydrocarbon fuels through 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-electron transfer pathway without the external sacrificial regents. The core component of this composite catalyst was 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. We found 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 outstanding activity and selectivity for the photocatalytic CO2 reduction (CO2RR) with a C2H6 yield rate at 68.23 μmol m−2 h−1 under visible light irradiation and an apparent quantum efficiency of 1.26% at 420 nm. In this system, the porphyrin rings were excited to produce electron–hole pairs by light. The photo-induced holes oxidized water to produce oxygen while graphene worked as an adsorption centre and electron acceptor for the CO2 reduction.

You have access to this article Please wait while we load your content... Something went wrong. Try again? About Cited by Related Download options Please wait...

Supplementary files

• Supplementary information PDF (1608K)

Article information

DOI https://doi.org/10.1039/C9NR07824J Article type Paper Submitted 11 Sep 2019 Accepted 12 Nov 2019 First published 12 Nov 2019

Download Citation

Nanoscale, 2019,11, 22980-22988 BibTex EndNote MEDLINE ProCite ReferenceManager RefWorks RIS

Permissions

Request permissions

Highly selective conversion of CO2 to C2H6 on graphene modified chlorophyll Cu through multi-electron process for artificial photosynthesis

T. Wu, C. Zhu, D. Han, Z. Kang and L. Niu, Nanoscale, 2019, 11, 22980 DOI: 10.1039/C9NR07824J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Tweet Share

Search articles by author

Tongshun Wu Cheng Zhu Dongxue Han Zhenhui Kang Li Niu

Fetching data from CrossRef. This may take some time to load.

Loading related content

Spotlight

Advertisements

This website collects cookies to deliver a better user experience. See how this site uses Cookies. Do not sell my personal data. Este site coleta cookies para oferecer uma melhor experiência ao usuário. Veja como este site usa Cookies. Publishing

Journals

• Current Journals
• Archive Journals
• All Journals

Books

• Browse Books
• Series
• For Authors and Editors
• About

Databases

• Literature Updates
• ChemSpider
• The Merck Index*
• MarinLit

More

• For Members
• For Librarians
• Subscribe
• RSS Feeds
• Blogs
• Chemistry World
• Education in Chemistry
• Open Access
• Historical Collection