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Ligand-Exchange-Induced Amorphization of Pd Nanomaterials for Highly Efficient Electrocatalytic Hydrogen Evolution Reaction

Journal Article · · Advanced Materials
 [1];  [2];  [1];  [1];  [1];  [3];  [4];  [5];  [1];  [1];  [6]
  1. Nanyang Technological Univ. (Singapore)
  2. Nanyang Technological Univ. (Singapore); Chinese Academy of Sciences (CAS), Beijing (China)
  3. Center for Programmable MaterialsSchool of Materials Science and EngineeringNanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
  4. Inst. of Chemical and Engineering Sciences (Singapore). A*STAR (Agency for Science, Technology and Research); Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  5. Advanced Photon SourceArgonne National Laboratory 9700 South Cass Avenue Argonne IL 60439 USA
  6. Nanyang Technological Univ. (Singapore); City Univ. of Hong Kong (Hong Kong)
+ Show Author Affiliations
Various kinds of amorphous materials, such as transition metal dichalcogenides, metal oxides, and metal phosphates, have demonstrated superior electrocatalytic performance compared with their crystalline counterparts. Compared to other materials for electrocatalysis, noble metals exhibit intrinsically high activity and excellent durability. However, it is still very challenging to prepare amorphous noble-metal nanomaterials due to the strong interatomic metallic bonding. Herein, the discovery of a unique thiol molecule is reported, namely bismuthiol I, which can induce the transformation of Pd nanomaterials from face-centered-cubic (fcc) phase into amorphous phase without destroying their integrity. This ligand-induced amorphization is realized by post-synthetic ligand exchange under ambient conditions, and is applicable to fcc Pd nanomaterials with different capping ligands. Importantly, the obtained amorphous Pd nanoparticles exhibit remarkably enhanced activity and excellent stability toward electrocatalytic hydrogen evolution in acidic solution. This work provides a facile and effective method for preparing amorphous Pd nanomaterials, and demonstrates their promising electrocatalytic application.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
City University of Hong Kong; Nanyang Technological University (NTU); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357; SC0012704
OSTI ID:
1603282
Alternate ID(s):
OSTI ID: 1630068
OSTI ID: 1598058
Report Number(s):
BNL--213658-2020-JAAM
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 11 Vol. 32; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
Pd nanomaterials
amorphization
electrocatalysis
ligand exchange