插层辅助液相法制备二硫化物锆纳米片用于高效电催化二硝基还原为氨

IF 10.7 1区 工程技术 Q1 CHEMISTRY, PHYSICAL
Yangshuo Li , Huiyong Wang , Bing Chang , Yingying Guo , Zhiyong Li , Shamraiz Hussain Talib , Zhansheng Lu , Jianji Wang
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引用次数: 0

摘要

二硫化物锆(ZrS2)是一种二维(2D)过渡金属二硫化物,因其独特的电子结构和性能而受到广泛关注。然而,大规模生产高质量的ZrS2纳米片以实现其实际应用仍然是一个挑战。在这里,我们通过在N-甲基吡咯烷酮(NMP)中的液相剥离,成功地将厚度为微米的块状ZrS2粉末剥离成单层和多层纳米片。研究发现,剥离率高达27.3%,这是ZrS2纳米片从大块ZrS2粉末中剥离的记录值,77.1%的ZrS2纳米板为2–3层。分子几何尺寸和脂肪胺碱度对剥离有重要影响。此外,ZrS2纳米片已被用作电催化还原二氮的催化剂,NH3产率为57.75μg h−1 mgcat1,是文献中报道的ZrS2纳米纤维的两倍,是大块ZrS2粉末的三倍。因此,本文报道的液相剥离策略在大规模生产用于高活性电催化的ZrS2纳米片方面具有巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Intercalation assisted liquid phase production of disulfide zirconium nanosheets for efficient electrocatalytic dinitrogen reduction to ammonia

Intercalation assisted liquid phase production of disulfide zirconium nanosheets for efficient electrocatalytic dinitrogen reduction to ammonia

Disulfide zirconium (ZrS2) is a two-dimensional (2D) transition metal disulfide and has given rise to extensive attention because of its distinctive electronic structure and properties. However, mass production of high quality of ZrS2 nanosheets to realize their practical application remains a challenge. Here, we have successfully exfoliated the bulk ZrS2 powder with the thickness of micron into single and few-layer nanosheets through liquid-phase exfoliation in N-methylpyrrolidone (NMP) assisted via aliphatic amines as intercalators. It is found that the exfoliation yield is as high as 27.3%, which is the record value for the exfoliation of ZrS2 nanosheets from bulk ZrS2 powder, and 77.1% of ZrS2 nanosheets are 2–3 layers. The molecular geometric size and aliphatic amine basicity have important impact on the exfoliation. Furthermore, the ZrS2 nanosheets have been used as catalyst in the electrocatalytic dinitrogen reduction with the NH3 yield of 57.75 μg h−1 mgcat.−1, which is twice that by ZrS2 nanofibers reported in literature and three times that by the bulk ZrS2 powder. Therefore, the liquid phase exfoliation strategy reported here has great potential in mass production of ZrS2 nanosheets for high activity electrocatalysis.

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来源期刊
Green Energy & Environment
Green Energy & Environment Energy-Renewable Energy, Sustainability and the Environment
CiteScore
16.80
自引率
3.80%
发文量
332
审稿时长
12 days
期刊介绍: Green Energy & Environment (GEE) is an internationally recognized journal that undergoes a rigorous peer-review process. It focuses on interdisciplinary research related to green energy and the environment, covering a wide range of topics including biofuel and bioenergy, energy storage and networks, catalysis for sustainable processes, and materials for energy and the environment. GEE has a broad scope and encourages the submission of original and innovative research in both fundamental and engineering fields. Additionally, GEE serves as a platform for discussions, summaries, reviews, and previews of the impact of green energy on the eco-environment.
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