Journal Article

PUBDB-2024-00256

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Reactive Deposition Versus Strong Electrostatic Adsorption (SEA): A Key to Highly Active Single Atom Co‐Catalysts in Photocatalytic H$_2$ Generation

Wang, Y.Extern* ; Qin, S. ; Denisov, N. ; Kim, H. ; Bad'ura, Z. ; Sarma, B. B.Extern* ; Schmuki, P. (Corresponding author)Extern*

2023
Wiley-VCH Weinheim

This record in other databases:        

Please use a persistent id in citations: doi:10.1002/adma.202211814  doi:10.3204/PUBDB-2024-00256

Abstract: In recent years, the use of single atoms (SAs) has become of a rapidly increasing significance in photocatalytic H$_2$ generation; here SA noble metals (mainly Pt SAs) can act as highly effective co-catalysts. The classic strategy to decorate oxide semiconductor surfaces with maximally dispersed SAs relies on “strong electrostatic adsorption” (SEA) of suitable noble metal complexes. In the case of TiO$_2$ – the classic benchmark photocatalyst – SEA calls for adsorption of cationic Pt complexes such as [(NH$_3$)$_4$Pt]$^{2+}$ which then are thermally reacted to surface-bound SAs. While SEA is widely used in literature, in the present work it is shown by a direct comparison that reactive attachment based on the reductive anchoring of SAs, e.g., from hexachloroplatinic(IV) acid (H$_2$PtCl$_6$) leads directly to SAs in a configuration with a significantly higher specific activity than SAs deposited with SEA – and this at a significantly lower Pt loading and without any thermal post-deposition treatments. Overall, the work demonstrates that the reactive deposition strategy is superior to the classic SEA concept as it provides a direct electronically well-connected SA-anchoring and thus leads to highly active single-atom sites in photocatalysis.

---

Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2023

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 25 ; JCR ; Nationallizenz ; SCOPUS ; Web of Science Core Collection

---