期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 128, 期 12, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-022-06219-z
关键词
Zinc oxide; Nanorods; Paramagnetism; Hydrogen evolution
资金
- National Research Foundation Korea - Ministry of Science, ICT and Fusion Research [20201G1A1014959]
- Ministry of SMEs and Startups (MSS, Korea) [S3038568]
- National Research Foundation of Korea (NRF) - Ministry of Science [2022R1I1A1A01064248, 2021R1A4A2001658, 2022R1A2C1003853]
- Korean government [2020R1A2C1012439, 2020R1A4A1019227]
- Korea Technology & Information Promotion Agency for SMEs (TIPA) [S3038568] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2022R1I1A1A01064248, 2022R1A2C1003853] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study presents the synthesis of diluted magnetic semiconducting ZnO:V nanorods and investigates their hydrogen evolution properties. It is found that the incorporation of V ions enhances the paramagnetic nature of ZnO, leading to improved H2 production capability. The ZnO:V (2 at%) nanorods show the best performance in terms of H2 generation.
The production of one-dimensional nanorods (NRs) has been capturing decent curiosity due to the peculiar electronic, spintronic, and hydrogen evolution properties. Consequently, herein, diluted magnetic semiconducting ZnO:V (0, 1, and 2 at%) NRs have been prepared through a typical hydrothermal method. SEM images depicted that the prepared samples belonged to nanorods. V ion incorporation into the ZnO matrix was confirmed through XRD, Raman, and XPS studies. A trivial decreasing of optical band gap with the V doping was determined via Kubelka-Munk plots. The doping enhances the paramagnetic nature of ZnO as function of V doping. Importantly, these NRs were measured for H-2 production through H2O splitting by the solar simulator. The ZnO:V (2 at%) portrayed the best H-2 production capability (25,188 mu mol h(-1) g(-1)) in 5 h than other samples. The plausible reasons behind the improved H-2 evolution could be discussed in detail. Till date, this is the first ever report on H-2 evolution of ZnO:V nanorods.
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