Li, D;
Zhao, Y;
Zhou, C;
Zhang, LP;
Tang, J;
Zhang, T;
(2022)
Unveiling the critical role of TiO2-supported atomically dispersed Cu
species for enhanced photofixation of N2 to nitrate.
Fundamental Research
10.1016/j.fmre.2022.05.025.
(In press).
Preview |
Text
Tang_1-s2.0-S2667325822002345-main.pdf - Published Version Download (2MB) | Preview |
Abstract
Nitrate products are widely used in manufacturing as crucial raw materials and fertilizers. The traditional nitrate synthesis process involves high energy consumption and emission, thereby opposing the goals of zero-carbon emission and green chemistry. Thus, a sustainable roadmap for nitrate synthesis that uses green energy input, clean N sources, and direct catalytic processes is urgently required (e.g., developing a novel photosynthesis system). Here, we synthesized TiO2-supported atomically dispersed Cu species for N2 photofixation to nitrate in a flow reactor. The optimized photocatalyst yielded a high nitrate photosynthesis rate of 0.93 μmol h−1 and selectivity of ∼90%, which is superior to most of the values reported thus far. Further, experimental results and in-situ investigations revealed that the atomically dispersed Cu sites in the as-designed sample significantly enhanced the separation and transfer efficiency of photogenerated carriers, adsorption and activation of reactants, and the formation of chemisorbed NOx intermediates, thereby realizing the excellent photofixation of N2 to nitrate.
| Type: | Article |
|---|---|
| Title: | Unveiling the critical role of TiO2-supported atomically dispersed Cu species for enhanced photofixation of N2 to nitrate |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.fmre.2022.05.025 |
| Publisher version: | https://doi.org/10.1016/j.fmre.2022.05.025 |
| Language: | English |
| Additional information: | © 2022 The Authors. Publishing Services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
| Keywords: | N2 photofixation, TiO2, Nitrate photosynthesis, Cu species, NOx intermediates |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10152480 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
