Tailoring the ORR and HER electrocatalytic performances of gold nanoparticles through metal-ligand interfaces (vol 7, pg 20425, 2019)

被引：4

作者：

Alba-Molina, David ^{[1
]}

Puente Santiago, Alain R. ^{[2
,3
]}

Giner-Casares, Juan J. ^{[1
]}

Rodriguez-Castellon, Enrique ^{[4
]}

Martin-Romero, Maria T. ^{[1
]}

Camacho, Luis ^{[1
]}

Luque, Rafael ^{[2
,5
]}

Cano, Manuel ^{[1
]}

机构：

[1] Univ Cordoba UCO, Inst Nanochem IUNAN, Dept Phys Chem & Appl Thermodynam, Campus Univ Rabanales, E-14014 Cordoba, Spain

[2] UCO, IUNAN, Dept Organ Chem, Campus Univ Rabanales,Edificio Marie Curie, E-14014 Cordoba, Spain

[3] Univ Texas El Paso, Dept Chem, 500 W Univ Ave, El Paso, TX 79968 USA

[4] Univ Malaga, Fac Sci, Dept Inorgan Chem Crystallog & Mineral, Malaga, Spain

[5] RUDN Univ, Peoples Friendship Univ Russia, 6 Miklukho Maklaya Str, Moscow, Russia

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2019年 / 7卷 / 35期

关键词：

Hydrogen production - Electrolytic reduction - Fuel cells - Ligands - Electrocatalysts - Fiber optic sensors - Metal nanoparticles - Surface structure;

D O I：

10.1039/c9ta90203a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The oxygen reduction (ORR) and hydrogen evolution (HER) reactions are the most important cathodic processes involved in fuel cell and water splitting technologies, respectively. The development of bifunctional electrocatalyst materials plays a key role in the rapid advancement of these hydrogen-based renewable energy strategies. This work proposes citrate-stabilized gold nanoparticles (AuNPs) as a bifunctional electrocatalyst for ORR and HER. The capping ligand has a great influence on their resulting electrocatalytic performance. A simple ligand exchange method based on concentration gradients has been optimized. The surface structure of the different ligand-stabilized AuNPs was inferred by lead underpotential deposition (Pb-UPD). Static and dynamic electrochemical studies for both ORR and HER have been performed using different ligand-stabilized AuNPs as electrocatalysts, demonstrating that the citrate ligand confers the best performance. This work suggests that non-doped chemically synthesized AuNPs may be suitable as a bifunctional electrocatalyst in fuel cells and hydrogen production. © The Royal Society of Chemistry 2019.

引用

页码：20435 / 20435

页数：1