首页> 外文期刊>RSC Advances >Photocatalytic H-2 generation on macro-mesoporous oxide-supported Pt nanoparticles
【24h】

Photocatalytic H-2 generation on macro-mesoporous oxide-supported Pt nanoparticles

机译:在宏观介孔氧化物支持的Pt纳米粒子上的光催化H-2代

获取原文
获取原文并翻译 | 示例
           

摘要

A series of photocatalysts were prepared with crystalline macro-mesoporous oxides and Pt nanoparticles (Pt-TiO2, Pt-Ta2O5, Pt-Nb2O5, Pt-ZrO2, and Pt-Al2O3). Transmission electron microscopy, X-ray diffraction, and N-2 adsorption-desorption isotherms reveal that the oxides have prominent macro-and mesoporosity in the crystalline walls. The high surface area and crystalline walls of the oxides play significant roles in photocatalytic H-2 production. Pt-TiO2 catalysts show enhanced photocatalytic water splitting efficiency for H-2 generation (solar energy conversion efficiency of 1.06%) under a 150 W and 1.5 AM solar simulator. Pt-Ta2O5 and Pt-Nb2O5 also generate noticeable photocatalytic activities of 0.21% and 0.16%, respectively. The enhanced photocatalytic activity is attributed to correct band alignment of the porous oxides with absorption in the UV-visible range, and ordered macro-and mesoporosity of the crystalline oxides for efficient charge transfer.
机译:用结晶宏观介孔氧化物和Pt纳米颗粒(Pt-TiO 2,Pt-Ta2O5,Pt-Nb2O5,Pt-ZrO2和Pt-Al2O3)制备一系列光催化剂。 透射电子显微镜,X射线衍射和N-2吸附 - 解吸等温物揭示了氧化物在结晶壁中具有突出的宏观和中间渗透性。 氧化物的高表面积和晶体壁在光催化H-2生产中起显着的作用。 Pt-TiO2催化剂显示出H-2代(太阳能转换效率为1.06%)的增强的光催化水分裂效率,在150W和1.5AM太阳能模拟器下。 PT-TA2O5和PT-NB2O5还产生显着的光催化活性为0.21%和0.16%。 增强的光催化活性归因于在UV可见范围内具有吸收的多孔氧化物的校正带对准,并有序氧化物的宏观和中孔率,以获得有效的电荷转移。

著录项

  • 来源
    《RSC Advances》 |2016年第22期|共6页
  • 作者单位

    Korea Adv Inst Sci &

    Technol Grad Sch EEWS Daejeon 305701 South Korea;

    Korea Adv Inst Sci &

    Technol Grad Sch EEWS Daejeon 305701 South Korea;

    Ulsan Natl Inst Sci &

    Technol UNIST Sch Energy &

    Chem Engn Ulsan 689798 South Korea;

    Korea Adv Inst Sci &

    Technol Grad Sch EEWS Daejeon 305701 South Korea;

    Korea Adv Inst Sci &

    Technol Grad Sch EEWS Daejeon 305701 South Korea;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号