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Title: Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue
Authors: Liu, W 
Zheng, GC 
Wong, WL 
Wong, KY 
Issue Date: Sep-2019
Source: Inorganic chemistry communications, Sept. 2019, v. 107, 107455, p. 1-6
Abstract: A colorimetric detection of hydrazine using Ausingle bondPd alloy nanoparticles (NPs) as catalyst is described, in which methylene blue (methylthioninium chloride) acts as a redox indicator. The sensing system with Ausingle bondPd NPs shows a rapid response at room temperature, leading to a color change within a few minutes, which is not achievable with Au or Pd NPs. A linear change in absorbance versus hydrazine concentration ranging from 0.1 to 5.0 mM can be obtained with a detection limit of ~4 × 10−4 M. The catalytic activity of the Ausingle bondPd NPs in the reaction can be attributed to the electronic inductive effect by Au on Pd in the alloy NPs.
Publisher: Elsevier
Journal: Inorganic chemistry communications 
ISSN: 1387-7003
EISSN: 1879-0259
DOI: 10.1016/j.inoche.2019.107455
Rights: © 2019 Elsevier B.V. All rights reserved.
© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
The following publication Liu, W., Zheng, G., Wong, W.-L., & Wong, K.-Y. (2019). Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue. Inorganic Chemistry Communications, 107, 107455 is available at
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