干旱区生态环境知识资源中心(Arid): Bromide-Regulated Anisotropic Growth of Desert-Rose-Like Nanostructured Gold onto Carbon Fiber Electrodes as Freestanding Electrocatalysts

Arid

DOI	10.1021/acsaem.0c01008
	Bromide-Regulated Anisotropic Growth of Desert-Rose-Like Nanostructured Gold onto Carbon Fiber Electrodes as Freestanding Electrocatalysts
	Morandi, Paul; Tuleushova, Nazym; Tingry, Sophie; Cambedouzou, Julien; Minteer, Shelley D.; Cornu, David; Holade, Yaovi
通讯作者	Cornu, D ; Holade, Y
来源期刊	ACS APPLIED ENERGY MATERIALS
ISSN	2574-0962
出版年	2020
卷号	3 期号:8 页码:7560-7571
英文摘要	Three-dimensional (3D) gas-diffusion electrodes (GDEs) as support for catalytic nanoparticles are important to the electrolysis and fuel cell fields to facilitate reactant transport and distribution and reach higher current densities. Hence, the assembly of nanostructured catalytic particles directly onto GDEs during the synthesis could be a powerful one-step strategy to target high performance and long-term durability thanks to the induced strong nanoparticle-support interaction. We report herein the use of bromide anions to shape the anisotropic growth of nanostructured desert-rose-like gold particles directly onto the GDE, as a freestanding GDE-Au catalyst for straightforward use in electrolysis without an additional step. We showed that the bromide ions determine the anisotropy of the particles, resulting in the growth of gold into nanoplates enclosed by (111) facets. The formation of hierarchical nanostructured three-dimensional (3D) Au at the GDE surface was explained by the nanoparticle-mediated aggregation mechanism and the preferential adsorption of Br- on the (111) facet, leaving behind dominant planar structured nuclei, which then self-assemble. Electrocatalytic tests toward the glycerol electro-oxidation demonstrated that the as-synthesized freestanding surfactant- and binder-free GDE-Au material (100 mu g(Au) cm(-2)) delivered a high specific peak current density of j(p) = 33 mA cm(Au)(-2), which is three and seven times higher than the tested commercial Au/C nanocatalyst at loadings of 76 and 152 mu g(Au) cm(-2), respectively. This study provides future directions for the synthesis and application of nanostructured catalysts for alcohol oxidation as an alternative to anodic oxygen evolution, which consumes the majority of the electricity input during the electrolysis.
英文关键词	anisotropic growth catalyst gold gas-diffusion electrodes glycerol oxidation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000563784400036
WOS关键词	SINGLE-CRYSTAL FACES ; ELECTROCHEMICAL VALORIZATION ; UNDERPOTENTIAL DEPOSITION ; SURFACE-STRUCTURE ; GLYCEROL ; OXIDATION ; ALKALINE ; NANOPARTICLES ; ELECTROOXIDATION ; EFFICIENT
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325886
作者单位	[Morandi, Paul; Tuleushova, Nazym; Tingry, Sophie; Cambedouzou, Julien; Cornu, David; Holade, Yaovi] Univ Montpellier, Inst Europeen Membranes, IEM UMR 5635, ENSCM,CNRS, F-34090 Montpellier, France; [Minteer, Shelley D.] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	Morandi, Paul,Tuleushova, Nazym,Tingry, Sophie,et al. Bromide-Regulated Anisotropic Growth of Desert-Rose-Like Nanostructured Gold onto Carbon Fiber Electrodes as Freestanding Electrocatalysts[J],2020,3(8):7560-7571.
APA	Morandi, Paul.,Tuleushova, Nazym.,Tingry, Sophie.,Cambedouzou, Julien.,Minteer, Shelley D..,...&Holade, Yaovi.(2020).Bromide-Regulated Anisotropic Growth of Desert-Rose-Like Nanostructured Gold onto Carbon Fiber Electrodes as Freestanding Electrocatalysts.ACS APPLIED ENERGY MATERIALS,3(8),7560-7571.
MLA	Morandi, Paul,et al."Bromide-Regulated Anisotropic Growth of Desert-Rose-Like Nanostructured Gold onto Carbon Fiber Electrodes as Freestanding Electrocatalysts".ACS APPLIED ENERGY MATERIALS 3.8(2020):7560-7571.