TY - JOUR
T1 - Modification of boron-doped diamond electrodes with gold-palladium nanoparticles for an oxygen sensor
AU - Ivandini, Tribidasari A.
AU - Luhur, Muhammad S.P.
AU - Khalil, Munawar
AU - Einaga, Yasuaki
N1 - Funding Information:
The authors would like to thank Directorate of Research and Community Engangement, Universitas Indonesia for financial support under Hibah PUTI Q1Q2 2019 (contract number NKB-271/UN2.R3.1/HKP.05.00/2019). This work was also partly granted by the Indonesian Ministry of Research and Technology/National Agency for Research and Innovation and the Indonesian Ministry of Education and Culture, under World Class University Program 2020 managed by Institute Technology Bandung.
Publisher Copyright:
© The Royal Society of Chemistry 2021.
PY - 2021/5/7
Y1 - 2021/5/7
N2 - Modification of boron-doped diamond (BDD) with gold-palladium nanoparticles (Au@PdNPs) was successfully performed. Prior to the modification, BDD was modified with allylamine to provide active sites for the attachment of nanoparticles, while the synthesis of Au@PdNPs was performed by chemical reduction of a palladium salt solution in a colloidal solution of gold nanoparticles. Characterization using TEM images showed that by controlling the palladium concentration, flower and core-shell shaped Au@PdNPs can be prepared. XPS studies confirmed that the nanoparticles with a flower shape could be attached better on the BDD surface. The Au@PdNPs-modified BDD (Au@PdNPs-BDD) electrodes were then examined for the oxygen reduction reaction in comparison with gold and palladium-based electrodes. One order higher current response was observed at Au@PdNPs-BDD compared to AuNPs-BDD, indicating the contribution of palladium in the oxygen reduction reaction. Good linearity with comparable limits of detection suggested that Au@PdNPs-BDD electrodes are promising for use as oxygen sensors. Furthermore, their application as BOD sensors was demonstrated.
AB - Modification of boron-doped diamond (BDD) with gold-palladium nanoparticles (Au@PdNPs) was successfully performed. Prior to the modification, BDD was modified with allylamine to provide active sites for the attachment of nanoparticles, while the synthesis of Au@PdNPs was performed by chemical reduction of a palladium salt solution in a colloidal solution of gold nanoparticles. Characterization using TEM images showed that by controlling the palladium concentration, flower and core-shell shaped Au@PdNPs can be prepared. XPS studies confirmed that the nanoparticles with a flower shape could be attached better on the BDD surface. The Au@PdNPs-modified BDD (Au@PdNPs-BDD) electrodes were then examined for the oxygen reduction reaction in comparison with gold and palladium-based electrodes. One order higher current response was observed at Au@PdNPs-BDD compared to AuNPs-BDD, indicating the contribution of palladium in the oxygen reduction reaction. Good linearity with comparable limits of detection suggested that Au@PdNPs-BDD electrodes are promising for use as oxygen sensors. Furthermore, their application as BOD sensors was demonstrated.
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U2 - 10.1039/d0an02414g
DO - 10.1039/d0an02414g
M3 - Article
C2 - 33949364
AN - SCOPUS:85105376273
SN - 0003-2654
VL - 146
SP - 2842
EP - 2850
JO - Analyst
JF - Analyst
IS - 9
ER -