Zhao, Y;
Wu, F;
Miao, Y;
Zhou, C;
Xu, N;
Shi, R;
Wu, L-Z;
... Zhang, T; + view all
(2021)
Revealing Ammonia Quantification Minefield in Photo/Electrocatalysis.
Angewandte Chemie International Edition
, 60
(40)
pp. 21728-21731.
10.1002/anie.202108769.
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Abstract
Photo/electrocatalytic ammonia synthesis has recently developed fast while the ammonia yields over state-of-the-art photo/electrocatalysts are still very moderate. Such low concentration of synthesized NH3 brings about a challenge to the reliable quantification of the product in photo/electrocatalysis. Notably, we found that the quantitative detection of ammonia concentration below 0.2 ppm is error-prone, which is likely the case happening in the majority of photo/electrocatalytic NH3 synthesis, thus arising concerns about the rationality and accuracy for low-concentration ammonia quantification in these processes. Herein, we discuss the methodology used and analyze the reliability of various detection methods for the detection of trace ammonia in aqueous media. The challenges facing the detection of low concentration of ammonia in photo/electrocatalysis can be overcome by integration with multiple detection methods. According to the data presented, we also propose an effective criterion for precise quantification of ammonia, avoiding the unreasonable comparisons in photo/electrocatalytic ammonia synthesis.
| Type: | Article |
|---|---|
| Title: | Revealing Ammonia Quantification Minefield in Photo/Electrocatalysis |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/anie.202108769 |
| Publisher version: | https://doi.org/10.1002/anie.202108769 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | ammonia, detection, photo, electrocatalysis, quantification |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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 |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10136165 |
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