Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue

Wei Liu; Guangchao Zheng; Wing Leung Wong; Kwok Yin Wong

doi:10.1016/j.inoche.2019.107455

Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue

Wei Liu, Guangchao Zheng, Wing Leung Wong, Kwok Yin Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

6 Citations (Scopus)

Abstract

A colorimetric detection of hydrazine using Au–Pd alloy nanoparticles (NPs) as catalyst is described, in which methylene blue (methylthioninium chloride) acts as a redox indicator. The sensing system with Au–Pd 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 Au–Pd NPs in the reaction can be attributed to the electronic inductive effect by Au on Pd in the alloy NPs.

Original language	English
Article number	107455
Journal	Inorganic Chemistry Communications
Volume	107
DOIs	https://doi.org/10.1016/j.inoche.2019.107455
Publication status	Published - Sept 2019

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.inoche.2019.107455

http://hdl.handle.net/10397/88450

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title = "Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue",

abstract = "A colorimetric detection of hydrazine using Au–Pd alloy nanoparticles (NPs) as catalyst is described, in which methylene blue (methylthioninium chloride) acts as a redox indicator. The sensing system with Au–Pd 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 Au–Pd NPs in the reaction can be attributed to the electronic inductive effect by Au on Pd in the alloy NPs.",

author = "Wei Liu and Guangchao Zheng and Wong, {Wing Leung} and Wong, {Kwok Yin}",

year = "2019",

month = sep,

doi = "10.1016/j.inoche.2019.107455",

language = "English",

volume = "107",

journal = "Inorganic Chemistry Communications",

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T1 - Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue

AU - Liu, Wei

AU - Zheng, Guangchao

AU - Wong, Wing Leung

AU - Wong, Kwok Yin

PY - 2019/9

Y1 - 2019/9

N2 - A colorimetric detection of hydrazine using Au–Pd alloy nanoparticles (NPs) as catalyst is described, in which methylene blue (methylthioninium chloride) acts as a redox indicator. The sensing system with Au–Pd 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 Au–Pd NPs in the reaction can be attributed to the electronic inductive effect by Au on Pd in the alloy NPs.

AB - A colorimetric detection of hydrazine using Au–Pd alloy nanoparticles (NPs) as catalyst is described, in which methylene blue (methylthioninium chloride) acts as a redox indicator. The sensing system with Au–Pd 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 Au–Pd NPs in the reaction can be attributed to the electronic inductive effect by Au on Pd in the alloy NPs.

UR - http://www.scopus.com/inward/record.url?scp=85068105396&partnerID=8YFLogxK

U2 - 10.1016/j.inoche.2019.107455

DO - 10.1016/j.inoche.2019.107455

M3 - Journal article

AN - SCOPUS:85068105396

SN - 1387-7003

VL - 107

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

M1 - 107455

ER -

Au-Pd alloy nanoparticles catalyze the colorimetric detection of hydrazine with methylene blue

Abstract

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