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Preparation of Pt/K2La2Ti3O10 and its photo-catalytic activity for hydrogen evolution from methanol water solution

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Abstract

A layered perovskite-type oxide K2La2Ti3O10 was prepared with high-temperature solid-state reaction, and characterized with X-ray diffraction (XRD) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS). Platinum was loaded onto K2La2Ti3O10 as a co-catalyst with different methods. The dispersion of platinum on K2La2Ti3O10 was determined with HOT method. The photocatalytic activity of Pt/K2La2Ti3O10 was studied. This catalyst showed much higher activity in hydrogen evolution reaction than Ni/K2La2Ti3O10. The effects of different amounts of loaded platinum and several preparation methods were evaluated. The best achieved hydrogen evolution rate was 233.88 μmol·h−1 by Pt(2%)/K2La2Ti3O10. A possible band structure and mechanism were discussed based on the results.

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Authors and Affiliations

  1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China

    Cui Wenquan, Feng Liangrong, Xu Chenghua, Li Zijian, Lü Shaojie & Qiu Fali

  2. Chemistry Department, Sichuan University of Science & Engineering, Zigong, 643033, China

    Liu Li

  3. Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China

    Cui Wenquan

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  1. Cui Wenquan
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  2. Liu Li
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  3. Feng Liangrong
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  4. Xu Chenghua
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  5. Li Zijian
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  6. Lü Shaojie
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  7. Qiu Fali
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Correspondence to Qiu Fali.

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Cui, W., Liu, L., Feng, L. et al. Preparation of Pt/K2La2Ti3O10 and its photo-catalytic activity for hydrogen evolution from methanol water solution. SCI CHINA SER B 49, 162–168 (2006). https://doi.org/10.1007/s11426-006-0162-6

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  • DOI: https://doi.org/10.1007/s11426-006-0162-6

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