Hydrazine Detection during Ammonia Electro-oxidation Using an Aggregation-Induced Emission Dye

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

21 Scopus Citations
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Author(s)

  • Kumar Siddharth
  • Parvej Alam
  • Md Delowar Hossain
  • Ni Xie
  • Gabriel Sikukuu Nambafu
  • Faisal Rehman
  • Jacky W.Y. Lam
  • Jinping Cheng
  • Zhengtang Luo
  • Guanghao Chen
  • Ben Zhong Tang
  • Minhua Shao

Detail(s)

Original languageEnglish
Pages (from-to)2433-2440
Journal / PublicationJournal of the American Chemical Society
Volume143
Issue number5
Online published28 Jan 2021
Publication statusPublished - 10 Feb 2021
Externally publishedYes

Abstract

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.

Citation Format(s)

Hydrazine Detection during Ammonia Electro-oxidation Using an Aggregation-Induced Emission Dye. / Siddharth, Kumar; Alam, Parvej; Hossain, Md Delowar; Xie, Ni; Nambafu, Gabriel Sikukuu; Rehman, Faisal; Lam, Jacky W.Y.; Chen, Guohua; Cheng, Jinping; Luo, Zhengtang; Chen, Guanghao; Tang, Ben Zhong; Shao, Minhua.

In: Journal of the American Chemical Society, Vol. 143, No. 5, 10.02.2021, p. 2433-2440.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review