Academic Journal
Atomic‐Scale Defected HfS 2 Nanosheets: A Novel Platform Enhancing Photocatalysis
| العنوان: | Atomic‐Scale Defected HfS 2 Nanosheets: A Novel Platform Enhancing Photocatalysis |
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| المؤلفون: | Talebian‐Kiakalaieh, Amin, Hashem, Elhussein M., Guo, Meijun, Xia, Bingquan, Ran, Jingrun, Qiao, Shi‐Zhang |
| المساهمون: | Australian Research Council |
| المصدر: | Advanced Materials Technologies ; volume 8, issue 24 ; ISSN 2365-709X 2365-709X |
| بيانات النشر: | Wiley |
| سنة النشر: | 2023 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Recently, novel 2D materials with fascinating characteristics are extensively applied to design/fabricate high‐activity and cost‐effective photocatalysts for solar‐driven fuels/chemicals generation. Among these 2D materials, HfS 2 nanosheets (NSs) exhibit excellent features of large surface area, short bulk‐to‐surface distance, alterable band structures, and vast catalytic sites. Despite these features, no realistic experimental works on HfS 2 ‐based materials are reported in photocatalysis field. Moreover, it is interesting but challenging to realize atomic‐scale engineering of compositions/structures for novel 2D materials and to relate these atomic‐scale characteristics with the element/space/time‐resolved charge kinetics of 2D materials‐based photocatalysts. Herein, for the first time, atomic‐scale defected HfS 2 NSs are designed/synthesized. The as‐synthesized HfS 2 NSs are combined with various photocatalysts to acquire novel HfS 2 ‐TiO 2 , HfS 2 ‐CdS, HfS 2 ‐ZnIn 2 S 4 , and HfS 2 ‐C 3 N 4 composites, respectively. Among them, HfS 2 ‐CdS exhibits the highest rate (5971 µmol g −1 h −1 ) on hydrogen (H 2 ) evolution in triethanolamine aqueous solution, together with obviously‐enhanced rates on H 2 (2419 µmol g −1 h −1 ) and benzaldehyde (5.11 mmol g −1 h −1 ) evolution in benzyl alcohol aqueous solution. Various state‐of‐art characterizations reveal the element/space/time‐resolved electron/hole kinetics in HfS 2 ‐CdS composites, disclosing that these atomic‐scale S vacancies temporarily trapping electrons to facilitate spatiotemporal electron–hole separation/transfer. This work paves avenues to atomic‐scale design/synthesis of new 2D‐materials‐based photocatalysts for sunlight utilization. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/admt.202301213 |
| الاتاحة: | http://dx.doi.org/10.1002/admt.202301213 https://onlinelibrary.wiley.com/doi/pdf/10.1002/admt.202301213 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.C2E6012C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/admt.202301213 |
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