Scopus
YÖKSİS DOI Eşleşti
SJR Q1
Electron-enriched regulation of sulfur-active site for accelerating atomic hydrogen desorption of S-rich MoWS2+x cocatalyst toward efficient photocatalytic H2 evolution of TiO2
Chemical Engineering Journal · Aralık 2022
YÖKSİS Kayıtları
Electron-enriched regulation of sulfur-active site for accelerating atomic hydrogen desorption of S-rich MoWS2+x cocatalyst toward efficient photocatalytic H2 evolution of TiO2
Chemical Engineering Journal · 2022 SCI-Expanded
Prof. Dr. İMREN HATAY PATIR →
Electron-enriched regulation of sulfur-active site for accelerating atomic hydrogen desorption of S-rich MoWS2+x cocatalyst toward efficient photocatalytic H2 evolution of TiO2
Chemical Engineering Journal · 2022 SCI-Expanded
Doç. Dr. EMRE ASLAN →
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2018 ISSN: 1385-8947 SCI
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2021 ISSN: 1385-8947 SCI-Expanded Q1
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Electron-enriched regulation of sulfur-active site for accelerating atomic hydrogen desorption of S-rich MoWS2+x cocatalyst toward efficient photocatalytic H2 evolution of TiO2
2022 ISSN: 1385-8947 SCI-Expanded Q1
Prof. Dr. İMREN HATAY PATIR →
Fast, visual, and quantitative monitoring of N2H4 by two ratiometric fluorescent probes in environmental media and biological systems
2023 ISSN: 1385-8947 SCI-Expanded Q1
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Fast, visual, and quantitative monitoring of N2H4 by two ratiometric fluorescent probes in environmental media and biological systems
2023 ISSN: 1385-8947 SCI-Expanded Q1
Doç. Dr. MEHMET OĞUZ →
Makale Bilgileri
ISSN13858947
Yayın TarihiAralık 2022
Cilt / Sayfa449
Scopus ID2-s2.0-85133595455
Özet
Metal chalcogenides (MSx) as H2-evolution cocatalysts generally suffer from unfavorable H desorption property because of the strong interfacial interaction between the adsorbed H and intensely electronegative S sites (S-Hads, 363 KJ mol−1), which seriously hampers the Hads from desorbing to generate free H2. Herein, a universal strategy of electron-enriched regulation of sulfur-active site is developed to weaken the strong S-Hads bonds by introducing W heteroatoms into MoS2+x to form sulfur-rich MoWS2+x bimetal cocatalyst (expressed as MoWS2+x). In this case, the S-enriched MoWS2+x is skillfully produced and simultaneously anchored with the TiO2 by a facile photoinduced electron-reduction method, involving the aforehand formation of homogeneous W(MoS4)x and their subsequent in-situ photoinduced deposition procedure. Photoactivity experiments exhibit that the MoWS2+x/TiO2(2:1) sample obtains the highest H2-evolution rate of 4620.8 μmol h−1 g−1 (AQE = 22.2 %) with a great promotion of 3.6 folds compared to the MoS2+x/TiO2 sample. In situ/ex situ XPS characterizations and density functional theory (DFT) calculations reveal that the integration of W heteroatom into MoS2+x can regulate its electron density to form electron-enriched S(2+δ)− sites, thus availably weakening the S-Hads bonds to optimize atomic H desorption and accordingly enhancing the hydrogen-evolution activity of TiO2. This study provides a unique idea to optimize the electron densities of activity sites, which is vital for the development of efficient catalytic materials.
Yazarlar (7)
1
Duoduo Gao
2
Binbin Zhao
3
Linxi Wang
4
Emre Aslan
5
Imren Hatay Patir
ORCID: 0000-0003-2937-6557
6
Jiaguo Yu
7
Huogen Yu
Anahtar Kelimeler
Active site regulation
Cocatalysts
Electron-enriched S atoms
H evolution 2
Photocatalysis
Kurumlar
China University of Geosciences
Wuhan China
Selçuk Üniversitesi
Selçuklu Turkey
State Key Laboratory of Silicate Materials for Architectures
Wuhan China
Scimago Dergi (ISSN Eşleşmesi)
Chemical Engineering Journal
Q1
SJR Skoru2,259
H-Index369
YayıncıElsevier B.V.
ÜlkeNetherlands
Chemical Engineering (miscellaneous) (Q1)
Chemistry (miscellaneous) (Q1)
Environmental Chemistry (Q1)
Industrial and Manufacturing Engineering (Q1)
Metrikler
39
Atıf
7
Yazar
5
Anahtar Kelime