A general strategy for the enhanced H2 production performance of CdS/noble metal sulfide nanorods photocatalysts by cation exchange

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In this work, we report a series of noble metal (Ag, Au, Pt, etc.) sulfides that act as co-catalysts anchoring on CdS nanorods (NRs) obtained via a cation exchange strategy to promote photocatalytic hydrogen evolution. CdS NRs are first generated via a hydrothermal routine, noble metal sulfides are then in-situ grown on CdS NRs by a cation exchange method. CdS/Ag2S, CdS/Au2S and CdS/PtS NRs show improved hydrogen production rates (2506.88, 1513.17 and 1004.54 μmol g-1h-1, respectively), approximately 18, 11 and 7 times higher than CdS NRs (138.27 μmol g-1h-1). Among CdS/noble metal sulfide NRs, CdS/Ag2S NRs present the best H2 production performance. The apparent quantum efficiency (AQE) of CdS/Ag2S NRs achieves 3.11 % at λ = 370 nm. The improved photocatalytic performance of CdS/noble metal sulfide NRs dues to the following points: i) Noble metal sulfides on CdS NRs are beneficial for elevating light-absorbing and light-utilizing capacities, contributing to generating more photoexcited charges; ii) Noble metal sulfides are in-situ grown on CdS NRs as electron acceptors by a cation exchange method, thus the photoexcited electrons generated by CdS NRs rapidly migrate to the surface of noble metal sulfides, successfully accelerating the carriers separation efficiency. This series of noble metal sulfides acting as co-catalysts anchoring on CdS NRs offer new insights into the construction principles of high-performance photocatalytic hydrogen evolution catalysts.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:664

Enthalten in:

Journal of colloid and interface science - 664(2024) vom: 15. Apr., Seite 848-856

Sprache:

Englisch

Beteiligte Personen:

An, Shanna [VerfasserIn]
Zhang, Luming [VerfasserIn]
Ding, Xiaoyan [VerfasserIn]
Xue, Yanjun [VerfasserIn]
Tian, Jian [VerfasserIn]
Qin, Yingying [VerfasserIn]
You, Junhua [VerfasserIn]
Wang, Xiaoxue [VerfasserIn]
Zhang, Hangzhou [VerfasserIn]

Links:

Volltext

Themen:

Cation exchange reaction
CdS nanorods
Co-catalysts
Journal Article
Noble metal sulfides
Photocatalytic H(2) production

Anmerkungen:

Date Revised 06.04.2024

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.jcis.2024.03.087

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369833333