TY - JOUR
T1 - Hydrazine Detection during Ammonia Electro-oxidation Using an Aggregation-Induced Emission Dye
AU - Siddharth, Kumar
AU - Alam, Aprvej
AU - Hossain, Md Delowar
AU - Xie, Ni
AU - Nambafu, Gabriel
AU - Rehman, Faisal
AU - Lam, Jacky
AU - Chen, Guohua
AU - Cheng, Jinping
AU - Luo, Zhengtang
AU - Chen, Guanghao
AU - Tang, Benzhong
AU - Shao, Minhua
N1 - Funding Information:
This project is supported by the Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (SMSEGL20SC01), Hong Kong Innovation and Technology Commission (Grant ITC–CNERC14EG03 and ITC–CNERC14SC01), and Research Grants of Council of Hong Kong (160305518 and C6009-17G). We are also thankful to AIEgen Biotech Co. Ltd for AIEgens and Biosciences Central Research Facility of HKUST for assistance in the MALDI-TOF experiments.
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/2/10
Y1 - 2021/2/10
N2 - Ammonia electro-oxidation is an extremely significant reaction with regards to the nitrogen cycle, hydrogen economy, and wastewater remediation. The design of efficient electrocatalysts for use in the ammonia electro-oxidation reaction (AOR) requires comprehensive understanding of the mechanism and intermediates involved. In this study, aggregation-induced emission (AIE), a robust fluorescence sensing platform, is employed for the sensitive and qualitative detection of hydrazine (N2H4), one of the important intermediates during the AOR. Here, we successfully identified N2H4 as a main intermediate during the AOR on the model Pt/C electrocatalyst using 4-(1,2,2-triphenylvinyl)benzaldehyde (TPE-CHO), an aggregation-induced emission luminogen (AIEgen). We propose the AOR mechanism for Pt with N2H4 being formed during the dimerization process (NH2 coupling) within the framework of the Gerischer and Mauerer mechanism. The unique chemodosimeter approach demonstrated in this study opens a novel pathway for understanding electrochemical reactions in depth.
AB - Ammonia electro-oxidation is an extremely significant reaction with regards to the nitrogen cycle, hydrogen economy, and wastewater remediation. The design of efficient electrocatalysts for use in the ammonia electro-oxidation reaction (AOR) requires comprehensive understanding of the mechanism and intermediates involved. In this study, aggregation-induced emission (AIE), a robust fluorescence sensing platform, is employed for the sensitive and qualitative detection of hydrazine (N2H4), one of the important intermediates during the AOR. Here, we successfully identified N2H4 as a main intermediate during the AOR on the model Pt/C electrocatalyst using 4-(1,2,2-triphenylvinyl)benzaldehyde (TPE-CHO), an aggregation-induced emission luminogen (AIEgen). We propose the AOR mechanism for Pt with N2H4 being formed during the dimerization process (NH2 coupling) within the framework of the Gerischer and Mauerer mechanism. The unique chemodosimeter approach demonstrated in this study opens a novel pathway for understanding electrochemical reactions in depth.
UR - http://www.scopus.com/inward/record.url?scp=85100668034&partnerID=8YFLogxK
U2 - 10.1021/jacs.0c13178
DO - 10.1021/jacs.0c13178
M3 - Journal article
SN - 0002-7863
VL - 143
SP - 2433
EP - 2440
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 5
ER -