Electroless deposition of gold nanoparticles on a glassy carbon surface to attain methylene blue degradation via oxygen reduction reactions

Md Tarikul Islam; Md Mahmudul Hasan; Md Fazle Shabik; Fahadul Islam; Yuki Nagao; Mohammad A. Hasnat

doi:10.1016/j.electacta.2020.136966

Electroless deposition of gold nanoparticles on a glassy carbon surface to attain methylene blue degradation via oxygen reduction reactions

Md Tarikul Islam, Md Mahmudul Hasan, Md Fazle Shabik, Fahadul Islam, Yuki Nagao, Mohammad A. Hasnat^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

A glassy carbon electrode (GCE) surface was modified with gold nanoparticles (Au NPs) via electroless deposition method. It was observed that a pristine GCE surface does not deposit Au NPs through an electroless process. However, while a GCE surface is electrochemically pretreated then sites having negative charges are generated which enables Au (III) particles to be deposited on its surface. The X-ray photoelectron spectroscopy and scanning electron microscopy were used to characterize the electrode surface. It was found that Au NPs are deposited on the GCE surface (Au-GCE) having flower like shapes. The resultant surface was employed to execute electrocatalytic oxygen reduction reactions (ORR). By analyzing hydrodynamic voltammograms, it was confirmed that ORR undergoes a 2e⁻transfer pathway and H₂O₂ is generated on the Au-GCE surface having a standard rate constant (k^o) of 5.48 × 10⁻⁹ cm s⁻¹ at +0.05 V vs. Ag/AgCl (sat. KCl) in 0.1 M H₂SO₄. The in-situ generated H₂O₂ can degrade methylene blue (MB) via Electro-Fenton process. The MB degradation was found to match well with the 1st order kinetic model with a homogeneous rate constant of 4.36 ×10⁻³ min^-1.

Original language	English
Article number	136966
Journal	Electrochimica Acta
Volume	360
DOIs	https://doi.org/10.1016/j.electacta.2020.136966
Publication status	Published - 2020 Nov 10
Externally published	Yes

Keywords

Electro-Fenton process
Electro-kinetics
Electroless Au deposition
Methylene blue degradation
Oxygen reduction reaction

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2020.136966

Cite this

@article{ed2702fad6ce4da1abc1136f2dbf994f,

title = "Electroless deposition of gold nanoparticles on a glassy carbon surface to attain methylene blue degradation via oxygen reduction reactions",

abstract = "A glassy carbon electrode (GCE) surface was modified with gold nanoparticles (Au NPs) via electroless deposition method. It was observed that a pristine GCE surface does not deposit Au NPs through an electroless process. However, while a GCE surface is electrochemically pretreated then sites having negative charges are generated which enables Au (III) particles to be deposited on its surface. The X-ray photoelectron spectroscopy and scanning electron microscopy were used to characterize the electrode surface. It was found that Au NPs are deposited on the GCE surface (Au-GCE) having flower like shapes. The resultant surface was employed to execute electrocatalytic oxygen reduction reactions (ORR). By analyzing hydrodynamic voltammograms, it was confirmed that ORR undergoes a 2e−transfer pathway and H2O2 is generated on the Au-GCE surface having a standard rate constant (ko) of 5.48 × 10−9 cm s−1 at +0.05 V vs. Ag/AgCl (sat. KCl) in 0.1 M H2SO4. The in-situ generated H2O2 can degrade methylene blue (MB) via Electro-Fenton process. The MB degradation was found to match well with the 1st order kinetic model with a homogeneous rate constant of 4.36 ×10−3 min-1.",

keywords = "Electro-Fenton process, Electro-kinetics, Electroless Au deposition, Methylene blue degradation, Oxygen reduction reaction",

author = "Islam, {Md Tarikul} and Hasan, {Md Mahmudul} and Shabik, {Md Fazle} and Fahadul Islam and Yuki Nagao and Hasnat, {Mohammad A.}",

note = "Funding Information: The authors thank TWAS and SIDA for a research grant ( 19 - 222 RG/CHE/AS_G ), to carry on this research work. The authors also acknowledge the Ministry of Science and Technology (Grant no. 369ES, 2019 - 20 ), Bangladesh, and the research center of Shahjalal University of Science and Technology (Grant. no. PS/2018/3/27 ) for allocating partial grants. Funding Information: The authors thank TWAS and SIDA for a research grant (19-222 RG/CHE/AS_G), to carry on this research work. The authors also acknowledge the Ministry of Science and Technology (Grant no. 369ES, 2019-20), Bangladesh, and the research center of Shahjalal University of Science and Technology (Grant. no. PS/2018/3/27) for allocating partial grants. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = nov,

day = "10",

doi = "10.1016/j.electacta.2020.136966",

language = "English",

volume = "360",

journal = "Electrochimica Acta",

issn = "0013-4686",

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T1 - Electroless deposition of gold nanoparticles on a glassy carbon surface to attain methylene blue degradation via oxygen reduction reactions

AU - Islam, Md Tarikul

AU - Hasan, Md Mahmudul

AU - Shabik, Md Fazle

AU - Islam, Fahadul

AU - Nagao, Yuki

AU - Hasnat, Mohammad A.

N1 - Funding Information: The authors thank TWAS and SIDA for a research grant ( 19 - 222 RG/CHE/AS_G ), to carry on this research work. The authors also acknowledge the Ministry of Science and Technology (Grant no. 369ES, 2019 - 20 ), Bangladesh, and the research center of Shahjalal University of Science and Technology (Grant. no. PS/2018/3/27 ) for allocating partial grants. Funding Information: The authors thank TWAS and SIDA for a research grant (19-222 RG/CHE/AS_G), to carry on this research work. The authors also acknowledge the Ministry of Science and Technology (Grant no. 369ES, 2019-20), Bangladesh, and the research center of Shahjalal University of Science and Technology (Grant. no. PS/2018/3/27) for allocating partial grants. Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/11/10

Y1 - 2020/11/10

N2 - A glassy carbon electrode (GCE) surface was modified with gold nanoparticles (Au NPs) via electroless deposition method. It was observed that a pristine GCE surface does not deposit Au NPs through an electroless process. However, while a GCE surface is electrochemically pretreated then sites having negative charges are generated which enables Au (III) particles to be deposited on its surface. The X-ray photoelectron spectroscopy and scanning electron microscopy were used to characterize the electrode surface. It was found that Au NPs are deposited on the GCE surface (Au-GCE) having flower like shapes. The resultant surface was employed to execute electrocatalytic oxygen reduction reactions (ORR). By analyzing hydrodynamic voltammograms, it was confirmed that ORR undergoes a 2e−transfer pathway and H2O2 is generated on the Au-GCE surface having a standard rate constant (ko) of 5.48 × 10−9 cm s−1 at +0.05 V vs. Ag/AgCl (sat. KCl) in 0.1 M H2SO4. The in-situ generated H2O2 can degrade methylene blue (MB) via Electro-Fenton process. The MB degradation was found to match well with the 1st order kinetic model with a homogeneous rate constant of 4.36 ×10−3 min-1.

AB - A glassy carbon electrode (GCE) surface was modified with gold nanoparticles (Au NPs) via electroless deposition method. It was observed that a pristine GCE surface does not deposit Au NPs through an electroless process. However, while a GCE surface is electrochemically pretreated then sites having negative charges are generated which enables Au (III) particles to be deposited on its surface. The X-ray photoelectron spectroscopy and scanning electron microscopy were used to characterize the electrode surface. It was found that Au NPs are deposited on the GCE surface (Au-GCE) having flower like shapes. The resultant surface was employed to execute electrocatalytic oxygen reduction reactions (ORR). By analyzing hydrodynamic voltammograms, it was confirmed that ORR undergoes a 2e−transfer pathway and H2O2 is generated on the Au-GCE surface having a standard rate constant (ko) of 5.48 × 10−9 cm s−1 at +0.05 V vs. Ag/AgCl (sat. KCl) in 0.1 M H2SO4. The in-situ generated H2O2 can degrade methylene blue (MB) via Electro-Fenton process. The MB degradation was found to match well with the 1st order kinetic model with a homogeneous rate constant of 4.36 ×10−3 min-1.

KW - Electro-Fenton process

KW - Electro-kinetics

KW - Electroless Au deposition

KW - Methylene blue degradation

KW - Oxygen reduction reaction

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DO - 10.1016/j.electacta.2020.136966

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SN - 0013-4686

VL - 360

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 136966

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Electroless deposition of gold nanoparticles on a glassy carbon surface to attain methylene blue degradation via oxygen reduction reactions

Abstract

Keywords

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