التفاصيل البيبلوغرافية
| العنوان: |
Synthesis of interfacial electric field-enhanced CdS/CdxZn1-xS/ZnO ternary heterojunction by lye dissolution etching mechanism for photocatalytic H2 production and CO2 reduction. |
| المؤلفون: |
Li, Qi, Yang, Shengchao, Huang, Yufan, Liang, Yuwei, Hu, Chunling, Wang, Min, Liu, Zhiyong, Tai, Yanlong, Liu, Jichang, Li, Yongsheng |
| المصدر: |
Journal of Materials Science & Technology; Jan2025, Vol. 204, p152-165, 14p |
| مصطلحات موضوعية: |
X-ray photoelectron spectroscopy, ELECTRIC fields, DENSITY functional theory, CARBON dioxide, HETEROJUNCTIONS, ATOMS |
| مستخلص: |
• ZnO/Cd x Zn 1- x S/CdS heterojunctions are prepared by the alkaline dissolution etching method. • The internal electric field at the interface improved the effective charge separation. • The Zn atoms in Cd x Zn 1- x S are of great significantce for producing strong interfacial electric fields. • Excellent performance: the H 2 generation efficiency of 15.67 mmol g−1 h−1 maintained 82.9 % in 24-hour cycles. • The CH 4 and CO precipitation performances are achieved at 3.47 μmol g−1 h−1 and 23.5 μmol g−1 h−1. The difficulty in fabricating a multifaceted composite heterojunction system based on Cd x Zn 1- x S limits the enhancement of photocatalytic performance. In the present scrutiny, novel ZnO/Cd x Zn 1- x S/CdS composite heterojunctions are successfully prepared by the alkaline dissolution etching method. The internal electric field at the interface of I-type and Z-scheme heterojunction improved the effective charge separation. The ZC 8 sample exhibits excellent photocatalytic performance and the H 2 production efficiency is 15.67 mmol g−1 h−1 with good stability up to 82.9 % in 24-hour cycles. The performance of CH 4 and CO capacity in the CO 2 RR process is 3.47 μmol g−1 h−1 and 23.5 μmol g−1 h−1, respectively. The photogenerated accelerated charge transport is then examined in detail by in situ X-ray photoelectron spectroscopy (ISXPS) and density functional theory (DFT) calculations. This work presents a new idea for the synthesis of Cd x Zn 1- x S solid-solution-based materials and provides a solid reference for the detailed mechanism regarding the electric field at the heterojunction interface. [Display omitted] [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Supplemental Index |