Ternary Palladium–Boron–Phosphorus Alloy Mesoporous Nanospheres for Highly Efficient Electrocatalysis
[1];
[2];
[3];
[4];
[1]
- Nanjing Normal Univ. (China)
- Qingdao Univ. of Science and Technology (China); National Inst. for Materials Science (NIMS), Ibaraki (Japan)
- Univ. of Connecticut, Storrs, CT (United States)
- Qingdao Univ. of Science and Technology (China); Univ. of Queensland, Brisbane, QLD (Australia); Kyung Hee Univ., Gyeonggi-do (South Korea)
Alloying palladium (Pd) catalysts with various metalloid and nonmetal elements can improve their catalytic performance in different chemical reactions. However, current nanosynthesis methods can only generate Pd alloys containing one metalloid or nonmetal, which limits the types of element combinations that may be used to improve Pd-based nanocatalysts. Here, we report a simple soft-templating synthetic strategy to co-alloy Pd with the metalloid boron (B) and the nonmetal phosphorus (P) to generate ternary PdBP mesoporous nanospheres (MSs) with three-dimensional dendritic frameworks. We use a one-step aqueous synthesis method where dimethylamine borane and sodium hypophosphite serve as the B and P sources, respectively, as well as the co-reducing agents to drive the nucleation and growth of ternary PdBP alloy on a sacrificial dioctadecyldimethylammonium chloride template. The concentration of metalloid to nonmetal and the diameters of dendritic MSs can be tailored. The synthetic protocol is also extended to other multicomponent PdMBP alloy MSs to generate different types of dendritic mesoporous frameworks. Boron and phosphorus are known to accelerate the kinetics of the electrochemical oxygen reduction reaction (ORR) and alcohol oxidation reactions (AORs), because their alloys promote the decomposition of oxygen-containing intermediates on Pd surfaces. The dendritic mesoporous morphology of the ternary PdBP MSs also accelerates electron/mass transfer and exposes numerous active sites, enabling better performance in the ORR and AORs. Extending the surfactant-templating synthetic route to multiple types of elements will enable the generation of libraries of multicomponent metal–metalloid-nonmetal alloy nanostructures with functions that are suitable for various targeted applications.
- Research Organization:
- Univ. of Connecticut, Storrs, CT (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; Natural Science Foundation of Jiangsu Province
- Grant/Contract Number:
- FG02-86ER13622; BK20180723
- OSTI ID:
- 1598220
- Journal Information:
- ACS Nano, Vol. 13, Issue 10; ISSN 1936-0851
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
A quaternary metal–metalloid–nonmetal electrocatalyst: B, P-co-doping into PdRu nanospine assemblies boosts the electrocatalytic capability toward formic acid oxidation
|
journal | January 2020 |
Asymmetric PdPtCu mesoporous hemispheres on nitrogen-functionalized graphene for methanol oxidation electrocatalysis
|
journal | January 2020 |
Similar Records
A Review of Recent Developments of Mesoporous Materials
STUDY, BY MEANS OF RADIOINDICATORS, OF THE IMPURITY ENRICHMENT DURING THE OXIDATION OF STEELS