TY  - JOUR
A1  - Zhao, Y
A1  - Wu, F
A1  - Miao, Y
A1  - Zhou, C
A1  - Xu, N
A1  - Shi, R
A1  - Wu, L-Z
A1  - Tang, J
A1  - Zhang, T
VL  - 60
UR  - https://doi.org/10.1002/anie.202108769
N2  - 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.
EP  - 21731
ID  - discovery10136165
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
PB  - WILEY-V C H VERLAG GMBH
TI  - Revealing Ammonia Quantification Minefield in Photo/Electrocatalysis
Y1  - 2021/09/27/
JF  - Angewandte Chemie International Edition
AV  - public
KW  - ammonia
KW  -  detection
KW  -  photo
KW  -  electrocatalysis
KW  -  quantification
IS  - 40
SP  - 21728
ER  -