Electrochemical Nucleation of Stable N2 Nanobubbles at Pt Nanoelectrodes

Journal of the American Chemical Society
Qianjin ChenHenry S White

Abstract

Exploring the nucleation of gas bubbles at interfaces is of fundamental interest. Herein, we report the nucleation of individual N2 nanobubbles at Pt nanodisk electrodes (6–90 nm) via the irreversible electrooxidation of hydrazine (N2H4 → N2 + 4H(+) + 4e(–)). The nucleation and growth of a stable N2 nanobubble at the Pt electrode is indicated by a sudden drop in voltammetric current, a consequence of restricted mass transport of N2H4 to the electrode surface following the liquid-to-gas phase transition. The critical surface concentration of dissolved N2 required for nanobubble nucleation, CN2,critical(s), obtained from the faradaic current at the moment just prior to bubble formation, is measured to be ∼0.11 M and is independent of the electrode radius and the bulk N2H4 concentration. Our results suggest that the size of stable gas bubble nuclei depends only on the local concentration of N2 near the electrode surface, consistent with previously reported studies of the electrogeneration of H2 nanobubbles. CN2,critical(s) is ∼160 times larger than the N2 saturation concentration at room temperature and atmospheric pressure. The residual current for N2H4 oxidation after formation of a stable N2 nanobubble at the electrode surface ...Continue Reading

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Citations

Nov 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Lei WangGang Pan
Nov 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Shuhua PengXuehua Zhang
Nov 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Muidh AlheshibriVincent S J Craig
Oct 16, 2016·ACS Applied Materials & Interfaces·Sharel P EPatrick R Unwin
Jan 28, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Yuwen LiuHenry S White
May 19, 2017·The Journal of Physical Chemistry Letters·Hang RenHenry S White
Aug 12, 2016·The Analyst·Yunshan FanBo Zhang
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May 23, 2018·Proceedings of the National Academy of Sciences of the United States of America·Rui HaoBo Zhang
May 17, 2017·Chemical Science·Yi-Lun YingYi-Tao Long
Jun 14, 2019·Proceedings of the National Academy of Sciences of the United States of America·Jing ChenWei Wang
May 20, 2020·Analytical and Bioanalytical Chemistry·Ran ChenMei Shen
Jul 23, 2020·Nanoscale·Gianluca FerraroMostafa Barigou
Nov 6, 2020·Chemical Communications : Chem Comm·Kota AndoTakashi Nakajima
Feb 13, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Yunqing MaXianren Zhang
Jan 25, 2020·The Journal of Physical Chemistry Letters·Hang RenHenry S White
Apr 20, 2021·Frontiers in Chemistry·Nikolai F BunkinAndrey Yu Izmailov
May 12, 2021·Chemical Society Reviews·Ranhua XiongKevin Braeckmans
Mar 20, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Xu ZhaoLong Luo
May 7, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Yinghua QiuHenry S White
Nov 25, 2020·Analytical Chemistry·Kira L Rahn, Robbyn K Anand
Mar 1, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Juan JinNing Gu
Sep 10, 2017·Journal of the American Chemical Society·Shuping LiXiaochun Zhou
Jun 1, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Álvaro Moreno SotoHenry S White
Feb 24, 2018·Journal of the American Chemical Society·Sean R GermanHenry S White
Mar 24, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Qianjin Chen, Long Luo
Mar 1, 2020·Journal of the American Chemical Society·Limin ZhouLijuan Zhang
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Jun 14, 2019·Journal of the American Chemical Society·Yamila A Perez SirkinValeria Molinero
Jun 27, 2019·The Journal of Physical Chemistry Letters·Yufei WangHang Ren

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