Bai Xianhua, Yuan Dachao, Li Yaguang, Song Hui, Lu Yangfan, San Xingyuan, Lu Jianmin, Fu Guangsheng, Wang Shufang, Ye Jinhua
Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Institute of Life Science and Green Development, Hebei University, Baoding 071002, P. R. China.
College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding 071001, P. R. China.
iScience. 2021 Jan 9;24(2):102056. doi: 10.1016/j.isci.2021.102056. eCollection 2021 Feb 19.
Methanol dehydrogenation is an efficient way to produce syngas with high quality. The current efficiency of sunlight-driven methanol dehydrogenation is poor, which is limited by the lack of excellent catalysts and effective methods to convert sunlight into chemicals. Here, we show that atomically substitutional Pt-doped in CeO nanosheets (Pt-CeO) exhibit excellent methanol dehydrogenation activity with 500-hr level catalytic stability, 11 times higher than that of Pt nanoparticles/CeO. Further, we introduce a photothermal conversion device to heat Pt-CeO up to 299°C under 1 sun irradiation owning to efficient full sunlight absorption and low heat dissipation, thus achieving an extraordinarily high methanol dehydrogenation performance with a 481.1 mmol g h of H production rate and a high solar-to-hydrogen (STH) efficiency of 32.9%. Our method represents another progress for ambient sunlight-driven stable and active methanol dehydrogenation technology.
甲醇脱氢是生产高质量合成气的有效方法。目前，太阳光驱动的甲醇脱氢效率较低，这受到缺乏优异催化剂以及将太阳光转化为化学物质的有效方法的限制。在此，我们表明原子取代掺杂在CeO纳米片中的Pt（Pt-CeO）表现出优异的甲醇脱氢活性，具有500小时级别的催化稳定性，比Pt纳米颗粒/CeO高出11倍。此外，我们引入了一种光热转换装置，由于其高效的全太阳光吸收和低散热特性，在1个太阳光照下可将Pt-CeO加热至299°C，从而实现了极高的甲醇脱氢性能，氢气产率为481.1 mmol g h，太阳能到氢能（STH）效率高达32.9%。我们的方法代表了环境太阳光驱动的稳定且活性高的甲醇脱氢技术的又一进展。
