Publications by authors named "Xiaopo Niu"
This review focuses on the mechanism and driving force in the intractable gas separation using porous adsorbents. A variety of intractable mixtures have been discussed, including air separation, carbon capture, and hydrocarbon purification. Moreover, the separation systems are categorized according to distinctly biased modes depending on the minor differences in the kinetic diameter, dipole/quadruple moment, and polarizability of the adsorbates, or sorted by the varied separation occasions (e.
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- Researchers developed bifunctional IrCo nanoalloys with metal vacancies for efficient water splitting in proton exchange membrane water electrolyzers (PEMWE), showing potential for industrial use.
- The IrCo catalysts demonstrated impressive performance, achieving ultra-low overpotentials (238 mV for OER and 18.6 mV for HER) and long-term stability (1000 hours for OER and 100 hours for HER) under acidic conditions.
- The findings highlight the importance of electronic interactions and in-situ Co vacancies in enhancing the activity and stability of the catalysts, paving the way for innovative designs in PEMWE applications.
Hollow Silicalite-1 and ZSM-5 zeolites with hierarchical porous shells have been synthesized by using a dissolution-recrystallization method. The morphology, structure, and acidity of these zeolites supported Pt catalysts were characterized by XRD, FT-IR, MAS-SSNMR, FE-SEM, FE-TEM, N₂-BET, XPS, NH₃-TPD, and CO pulse chemisorption. Compared to the conventional ZSM-5 supported Pt catalyst, the special structure in hollow ZSM-5 zeolite significantly promotes the dispersion of metallic Pt and the synergistic effect between metal active sites and acid sites.
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