Scopus
YÖKSİS Eşleşti
Dynamics of Photogenerated Charge Carriers in Inorganic/Organic S-Scheme Heterojunctions
Journal of Physical Chemistry Letters · Haziran 2022
YÖKSİS Kayıtları
Dynamics of Photogenerated Charge Carriers in Inorganic/Organic S-Scheme Heterojunctions
The Journal of Physical Chemistry Letters · 2022 SCI-Expanded
PROFESÖR İMREN HATAY PATIR →
Makale Bilgileri
DergiJournal of Physical Chemistry Letters
Yayın TarihiHaziran 2022
Cilt / Sayfa13 · 4695-4700
Scopus ID2-s2.0-85131269306
Özet
Step-scheme heterojunctions formed between two firmly bound photocatalysts facilitate charge separation due to interfacial charge transfer, which is usually illustrated by the gain or loss of electrons in the constituent photocatalysts characterized by in situ irradiated X-ray photoelectron spectroscopy. This technique provides a steady-state view of charge distribution but overlooks the transient and complex dynamics of charge transfer, trapping, and recombination. To provide a molecular-level and dynamic view of these processes, we investigated the behaviors of photogenerated charge carriers within an inorganic/organic TiO2/polydopamine S-scheme heterojunction using ultrafast transient absorption spectroscopy and time-resolved photoluminescence spectroscopy. We found the interfacial charge transfer within the step-scheme heterojunction occurred at a smaller shorter time scale than recombination, leading to efficient charge separation. Moreover, the charge-discharge property of polydopamine induces electron backflow, which should be avoided in practical photocatalytic applications. The composite showed higher photocatalytic H2O2-production activities due to faster H2O2formation and suppressed H2O2decomposition.
Yazarlar (8)
1
Linxi Wang
2
Jianjun Zhang
3
Huogen Yu
4
Imren Hatay Patir
ORCID: 0000-0003-2937-6557
5
Youji Li
6
Swelm Wageh
7
Ahmed A. Al-Ghamdi
8
Jiaguo Yu
Kurumlar
China University of Geosciences
Wuhan China
Jishou University
Jishou China
King Abdulaziz University
Jeddah Saudi Arabia
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
77
Atıf
8
Yazar