Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Apr 21;13:2191. doi: 10.1038/s41467-022-29875-4

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Fig. 3 — Mass spectrometric cyclic voltammograms results showing different gaseous products content of OER reaction as a function of applied potential for the ¹⁸O-labeled samples: ¹⁶O¹⁸O for a NiFe (oxy)hydroxide and b MoNiFe (oxy)hydroxide, ¹⁸O₂ for c NiFe (oxy)hydroxide and d MoNiFe (oxy)hydroxide. The contents of all the species were normalized by the amount of ¹⁶O₂ in the reaction products. Quasi in-situ Raman spectra of e ¹⁸O-labelled NiFe and f ¹⁸O-labelled MoNiFe (oxy)hydroxides after being applied a positive potential of 1.65 V (vs. RHE) in 1.0 M KOH with H₂¹⁶O for different time (1 min to 20 min). The Raman spectra of ¹⁶O-labelled samples were shown in black dash lines for comparison.