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431.
Rui Liu Mingzi Sun Xiangjian Liu Zunhang Lv Xinyu Yu Jinming Wang Yarong Liu Liuhua Li Prof. Dr. Xiao Feng Prof. Dr. Wenxiu Yang Prof. Dr. Bolong Huang Prof. Dr. Bo Wang 《Angewandte Chemie (International ed. in English)》2023,62(46):e202312644
Developing highly efficient and stable hydrogen production catalysts for electrochemical water splitting (EWS) at industrial current densities remains a great challenge. Herein, we proposed a heterostructure-induced-strategy to optimize the metal-support interaction (MSI) and the EWS activity of Ru-Ni3N/NiO. Density functional theory (DFT) calculations firstly predicted that the Ni3N/NiO-heterostructures can improve the structural stability, electronic distributions, and orbital coupling of Ru-Ni3N/NiO compared to Ru-Ni3N and Ru-NiO, which accordingly decreases energy barriers and increases the electroactivity for EWS. As a proof-of-concept, the Ru-Ni3N/NiO catalyst with a 2D Ni3N/NiO-heterostructures nanosheet array, uniformly dispersed Ru nanoparticles, and strong MSI, was successfully constructed in the experiment, which exhibited excellent HER and OER activity with overpotentials of 190 mV and 385 mV at 1000 mA cm−2, respectively. Furthermore, the Ru-Ni3N/NiO-based EWS device can realize an industrial current density (1000 mA cm−2) at 1.74 V and 1.80 V under alkaline pure water and seawater conditions, respectively. Additionally, it also achieves a high durability of 1000 h (@ 500 mA cm−2) in alkaline pure water. 相似文献
432.
Nino B. L. Milani Eric van Gilst Bob W. J. Pirok Peter J. Schoenmakers 《Journal of separation science》2023,46(21):2300304
Although comprehensive 2-D GC is an established and often applied analytical method, the field is still highly dynamic thanks to a remarkable number of innovations. In this review, we discuss a number of recent developments in comprehensive 2-D GC technology. A variety of modulation methods are still being actively investigated and many exciting improvements are discussed in this review. We also review interesting developments in detection methods, retention modeling, and data analysis. 相似文献
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在物体变形场的测量中,云纹干涉的载频调制技术有重要作用.在云纹干涉中,对称光照明产生的衍射光沿试件栅表面的法线传播并产生干涉.通过改变照明光的入射角度,可实现变形条纹场的空间调制.通过光程差的分析说明了载波条纹产生的机理,得出了载波频率与照明光入射角度变化之间的关系式.利用三点弯曲加载结合二维载频调制实验,给出了实验结果.证明了在初始条纹较少的情况下,载频调制技术能有效地测量物体的位移场. 相似文献
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Comprehensive two-dimensional gas chromatography: a powerful and versatile analytical tool 总被引:14,自引:0,他引:14
Comprehensive two-dimensional gas chromatography (GC×GC) is a novel technique which is rapidly gaining importance for the analysis of complex samples. In the present review, attention is devoted to the principle and advantages, and main characteristics such as modulation, column combinations, detector requirements and data processing, of the technique. Specifically, GC×GC of a variety of real-life samples is discussed to demonstrate the applicability of the technique, with emphasis on the usefulness of the ordered-structure principle and on the analyte-identification power provided by a combination with time-of-flight mass spectrometric detection. 相似文献
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光纤传感器的分类及其应用原理 总被引:9,自引:2,他引:9
光纤传感器是一种有广泛应用前景的新型传感器。文章介绍了光纤传感器的基本原理、分类及其优点。并分别阐述了光强调制型、相位调制型和偏振态调制型光纤传感器的应用原理及基本特点。 相似文献
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