Atomic layer deposition-developed two-dimensional alpha-MoO3 windows excellent hydrogen peroxide electrochemical sensing capabilities

Atomic layer deposition-developed two-dimensional alpha-MoO3 windows excellent hydrogen peroxide electrochemical sensing capabilities

Bibliographic Details
Parent link:Sensors and Actuators B: Chemical
Vol. 262.— 2018.— [P. 334-344]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий
Other Authors: Wei Zihan, Hai Zhenyin, Akbari M. K. Mohammad Karbalaei, Qi D. Dongchen, Xing Kaijian, Zhao Qing, Verpoort F. V. K. Frensis Valter Kornelius, Hu Jie, Hyde Lachlan, Zhuiykov S. Sergey
Summary:Title screen
Two-dimensional (2D) alpha-MoO3 nano-films with thickness of 4.9 nm were fabricated via atomic layer deposition (ALD) technique for the first time on the wafer scale and were subsequently annealed at 200 °C. The developed MoO3 nano-films were composed of flat nanoparticles with the average size of about 35 nm and possessed layered orthorhombic phase (alpha-MoO3). The electrochemical sensor based on these 2D alpha-MoO3 nano-films exhibited great sensitivity of 168.72 muA mM-1 cm-2 to hydrogen peroxide (H2O2) and presented extremely wide linear detection range of 0.4 muM-57.6 mM with the lowest detection limit of 0.076 muM at the signal to noise ratio of 3. Furthermore, due to extremely thin nature of 2D alpha-MoO3 nano-films ultra-fast response/recovery time of 2.0 s was achieved under the wide linear H2O2 detection range. Additionally, the sensor based on 2D alpha-MoO3 nano-films was also demonstrated great long-term stability, excellent selectivity and high reproducibility. The 2D alpha-MoO3 nano-films fabricated via ALD technique in this work represent a great opportunity for development of high-performance electrochemical sensors based on 2D transition metal oxides.
Published: 2018
Subjects:
труды учёных ТПУ
электронный ресурс
alpha-MoO3
atomic layer deposition
electrochemical sensing
hydrogen peroxide
осаждение
атомные слои
зондирование
пероксид водорода
Online Access:https://doi.org/10.1016/j.snb.2018.01.243
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667274

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