Volume 2, 2024

Novel double-layer core–shell photocatalyst CdS–TiO2@NH2-MIL-101: enhanced conversion of CO2 and CH4 at ambient temperature

Abstract

The conversion of CO2 and CH4 into high value-added chemical products by chemical means is regarded as an emerging industrial technology to solve the increasingly serious climate and energy crises. The solar-powered conversion of CO2 and CH4 to syngas is one such technology that holds promise for the production of renewable fuels. Here, ternary core–shell CdS–TiO2@NH2-MIL-101 composites were prepared using mild experimental methods and their physical and chemical properties were studied using a series of characterization methods. In addition, the interaction between the coupling of different mass fractions of MOF, TiO2, and CdS and the performance of photocatalytic, photothermal, and thermocatalytic CH4 reforming were investigated. The results show that the yields of CO and H2 of the CdS–TiO2@NH2-MIL-101 catalyst at room temperature are 364.46 μmol g−1 and 100.43 μmol g−1, respectively, which are 1200–1500% of the catalytic performance of TiO2. Moreover, the yields of CO and H2 of the CdS–TiO2@NH2-MIL-101 material at 150 °C are 2831.55 μmol g−1 and 1448.20 μmol g−1, respectively. Based on isotope tracer experiments and CO2 adsorption experiments, a possible comprehensive mechanism for CdS–TiO2@NH2-MIL-101 photocatalytic CH4 reforming is proposed. In addition to presenting a fresh research concept for achieving carbon neutrality, this work offers a new technical pathway for the quick conversion of CO2 and CH4 at room temperature.

Graphical abstract: Novel double-layer core–shell photocatalyst CdS–TiO2@NH2-MIL-101: enhanced conversion of CO2 and CH4 at ambient temperature

Supplementary files

Article information

Article type
Paper
Submitted
08 Nov. 2023
Accepted
03 Janv. 2024
First published
04 Janv. 2024
This article is Open Access
Creative Commons BY-NC license

EES. Catal., 2024,2, 675-686

Novel double-layer core–shell photocatalyst CdS–TiO2@NH2-MIL-101: enhanced conversion of CO2 and CH4 at ambient temperature

Y. Huang, L. Tan, H. Ma, X. Wang, Y. Huang, J. Yin, Z. Liang and X. Luo, EES. Catal., 2024, 2, 675 DOI: 10.1039/D3EY00264K

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, 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 commercial 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

Spotlight

Advertisements