Electrochemically modified boron-doped diamond electrode with Pd and Pd-Sn nanoparticles for ethanol electrooxidation

Christos K. Mavrokefalos; Maksudul Hasan; Worawut Khunsin; Michael Schmidt; Stefan A. Maier; James F. Rohan; Richard G. Compton; John S. Foord

doi:10.1016/j.electacta.2017.05.039

Electrochemically modified boron-doped diamond electrode with Pd and Pd-Sn nanoparticles for ethanol electrooxidation

Christos K. Mavrokefalos
, Maksudul Hasan
, Worawut Khunsin
, Michael Schmidt
, Stefan A. Maier
, James F. Rohan
, Richard G. Compton
, John S. Foord

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

Abstract

The modification of hydrogen terminated boron-doped diamond (HBDD) electrode with pure palladium (Pd) and Pd-Sn (tin) nanoparticles is described in this study. For synthesis of Sn/HBDD and Pd-Sn/HBDD electrode, a potentiostatic two-step electrochemical method involving the electrodeposition of Sn followed by Pd was used, respectively. The modification of the HBDD electrode with Sn and noble metal Pd by forming bimetallic Pd-Sn nanoparticle leads to a higher electrocatalytic activity. The electrocatalytic activity of the bimetallic Pd-Sn nanoparticles was evaluated towards the electrooxidation of ethanol in alkaline media and compared with that of the Pd nanoparticles alone. The bimetallic Pd-Sn nanoparticles modified HBDD electrode exhibits higher current densities and less poisoning effects during ethanol electrooxidation compared to Pd/HBDD. The proper tuning of the Pd loading on a foreign metal along with the surface termination effects of the BDD electrode plays a crucial role in achieving a high mass (4.26 × 10⁶ mA/g) and specific (12.37 mA/cm²) electrocatalytic activity of Pd towards ethanol electrooxidation. The aforementioned catalysts of this research possess a high poisoning resistance (I_f/I_b = 1.63) and stability towards ethanol electrooxidation in alkaline media.

Original language	English
Pages (from-to)	310-319
Number of pages	10
Journal	Electrochimica Acta
Volume	243
DOIs	https://doi.org/10.1016/j.electacta.2017.05.039
Publication status	Published - 20 Jul 2017

Keywords

Diamond
Ethanol
Nanoparticles
Palladium
Tin

Access to Document

10.1016/j.electacta.2017.05.039

Cite this

@article{beaaf54627a44bf8b26bd9d773c93a58,

title = "Electrochemically modified boron-doped diamond electrode with Pd and Pd-Sn nanoparticles for ethanol electrooxidation",

abstract = "The modification of hydrogen terminated boron-doped diamond (HBDD) electrode with pure palladium (Pd) and Pd-Sn (tin) nanoparticles is described in this study. For synthesis of Sn/HBDD and Pd-Sn/HBDD electrode, a potentiostatic two-step electrochemical method involving the electrodeposition of Sn followed by Pd was used, respectively. The modification of the HBDD electrode with Sn and noble metal Pd by forming bimetallic Pd-Sn nanoparticle leads to a higher electrocatalytic activity. The electrocatalytic activity of the bimetallic Pd-Sn nanoparticles was evaluated towards the electrooxidation of ethanol in alkaline media and compared with that of the Pd nanoparticles alone. The bimetallic Pd-Sn nanoparticles modified HBDD electrode exhibits higher current densities and less poisoning effects during ethanol electrooxidation compared to Pd/HBDD. The proper tuning of the Pd loading on a foreign metal along with the surface termination effects of the BDD electrode plays a crucial role in achieving a high mass (4.26 × 106 mA/g) and specific (12.37 mA/cm2) electrocatalytic activity of Pd towards ethanol electrooxidation. The aforementioned catalysts of this research possess a high poisoning resistance (If/Ib = 1.63) and stability towards ethanol electrooxidation in alkaline media.",

keywords = "Diamond, Ethanol, Nanoparticles, Palladium, Tin",

author = "Mavrokefalos, \{Christos K.\} and Maksudul Hasan and Worawut Khunsin and Michael Schmidt and Maier, \{Stefan A.\} and Rohan, \{James F.\} and Compton, \{Richard G.\} and Foord, \{John S.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = jul,

day = "20",

doi = "10.1016/j.electacta.2017.05.039",

language = "English",

volume = "243",

pages = "310--319",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Electrochemically modified boron-doped diamond electrode with Pd and Pd-Sn nanoparticles for ethanol electrooxidation

AU - Mavrokefalos, Christos K.

AU - Hasan, Maksudul

AU - Khunsin, Worawut

AU - Schmidt, Michael

AU - Maier, Stefan A.

AU - Rohan, James F.

AU - Compton, Richard G.

AU - Foord, John S.

PY - 2017/7/20

Y1 - 2017/7/20

N2 - The modification of hydrogen terminated boron-doped diamond (HBDD) electrode with pure palladium (Pd) and Pd-Sn (tin) nanoparticles is described in this study. For synthesis of Sn/HBDD and Pd-Sn/HBDD electrode, a potentiostatic two-step electrochemical method involving the electrodeposition of Sn followed by Pd was used, respectively. The modification of the HBDD electrode with Sn and noble metal Pd by forming bimetallic Pd-Sn nanoparticle leads to a higher electrocatalytic activity. The electrocatalytic activity of the bimetallic Pd-Sn nanoparticles was evaluated towards the electrooxidation of ethanol in alkaline media and compared with that of the Pd nanoparticles alone. The bimetallic Pd-Sn nanoparticles modified HBDD electrode exhibits higher current densities and less poisoning effects during ethanol electrooxidation compared to Pd/HBDD. The proper tuning of the Pd loading on a foreign metal along with the surface termination effects of the BDD electrode plays a crucial role in achieving a high mass (4.26 × 106 mA/g) and specific (12.37 mA/cm2) electrocatalytic activity of Pd towards ethanol electrooxidation. The aforementioned catalysts of this research possess a high poisoning resistance (If/Ib = 1.63) and stability towards ethanol electrooxidation in alkaline media.

AB - The modification of hydrogen terminated boron-doped diamond (HBDD) electrode with pure palladium (Pd) and Pd-Sn (tin) nanoparticles is described in this study. For synthesis of Sn/HBDD and Pd-Sn/HBDD electrode, a potentiostatic two-step electrochemical method involving the electrodeposition of Sn followed by Pd was used, respectively. The modification of the HBDD electrode with Sn and noble metal Pd by forming bimetallic Pd-Sn nanoparticle leads to a higher electrocatalytic activity. The electrocatalytic activity of the bimetallic Pd-Sn nanoparticles was evaluated towards the electrooxidation of ethanol in alkaline media and compared with that of the Pd nanoparticles alone. The bimetallic Pd-Sn nanoparticles modified HBDD electrode exhibits higher current densities and less poisoning effects during ethanol electrooxidation compared to Pd/HBDD. The proper tuning of the Pd loading on a foreign metal along with the surface termination effects of the BDD electrode plays a crucial role in achieving a high mass (4.26 × 106 mA/g) and specific (12.37 mA/cm2) electrocatalytic activity of Pd towards ethanol electrooxidation. The aforementioned catalysts of this research possess a high poisoning resistance (If/Ib = 1.63) and stability towards ethanol electrooxidation in alkaline media.

KW - Diamond

KW - Ethanol

KW - Nanoparticles

KW - Palladium

KW - Tin

UR - https://www.scopus.com/pages/publications/85019927302

U2 - 10.1016/j.electacta.2017.05.039

DO - 10.1016/j.electacta.2017.05.039

M3 - Article

AN - SCOPUS:85019927302

SN - 0013-4686

VL - 243

SP - 310

EP - 319

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Electrochemically modified boron-doped diamond electrode with Pd and Pd-Sn nanoparticles for ethanol electrooxidation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this