التفاصيل البيبلوغرافية
| العنوان: |
Ligand Effects on the Hydrogen Evolution Reaction Catalyzed by Au 13 and Pt@Au 12 : Alkynyl vs Thiolate |
| المؤلفون: |
Xiang Li (114679), Shinjiro Takano (1464316), Tatsuya Tsukuda (1286898) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Cell Biology, Pharmacology, Biotechnology, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, ∼ 70 mv, hydrogen evolution reaction, c car, 4 , 2 , 18 , 13 , 12 , remarkable ligand effect, negligible ligand effect, reductive regeneration step, negatively charged au, f , ph )< sub, protonation step, determining step, ligand effects, thiolate ligands, significantly enhanced, pure au, positive side, onset potential |
| الوصف: |
We studied the effects of the alkynyl and thiolate ligands (L) on the catalytic activities of Au 25 (L) 18 and PtAu 24 (L) 18 for the hydrogen evolution reaction (HER): the ligands used were CCAr F (Ar F = 3,5-bis(trifluoromethyl)-phenyl) and SC 2 H 4 Ph. The onset potential for Au 25 (CCAr F ) 18 was shifted to the positive side by ∼70 mV with respect to that for Au 25 (SC 2 H 4 Ph) 18 , indicating that the HER activity of the pure Au 13 core was significantly enhanced when protected by alkynyl ligands. This remarkable ligand effect was explained by the acceleration of the protonation step to the more negatively charged Au 25 (CCAr F ) 18 than the less negatively charged Au 25 (SC 2 H 4 Ph) 18 . In contrast, the HER activities of the doped PtAu 24 (CCAr F ) 18 and PtAu 24 (SC 2 H 4 Ph) 18 were comparable. The negligible ligand effect on the activity of the Pt@Au 12 core was ascribed to the change in the rate-determining step from the protonation step to the reductive regeneration step of the catalysts. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Ligand_Effects_on_the_Hydrogen_Evolution_Reaction_Catalyzed_by_Au_sub_13_sub_and_Pt_Au_sub_12_sub_Alkynyl_vs_Thiolate/16832888 |
| DOI: |
10.1021/acs.jpcc.1c08197.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.jpcc.1c08197.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.62BD4C8 |
| قاعدة البيانات: |
BASE |