The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan.
Department of Physics, Beihang University, Beijing, 100191, P. R. China.
Angew Chem Int Ed Engl. 2017 Feb 13;56(8):2064-2068. doi: 10.1002/anie.201612315. Epub 2017 Jan 12.
Efficient utilization of solar energy is a high-priority target and the search for suitable materials as photocatalysts that not only can harvest the broad wavelength of solar light, from UV to near-infrared (NIR) region, but also can achieve high and efficient solar-to-hydrogen conversion is one of the most challenging missions. Herein, using Au/La Ti O (BP-Au/LTO) sensitized with black phosphorus (BP), a broadband solar response photocatalyst was designed and used as efficient photocatalyst for H production. The optimum H production rates of BP-Au/LTO were about 0.74 and 0.30 mmol g h at wavelengths longer than 420 nm and 780 nm, respectively. The broad absorption of BP and plasmonic Au contribute to the enhanced photocatalytic activity in the visible and NIR light regions. Time-resolved diffuse reflectance spectroscopy revealed efficient interfacial electron transfer from excited BP and Au to LTO which is in accordance with the observed high photoactivities.
高效利用太阳能是一个高度优先的目标，寻找合适的材料作为光催化剂，这些光催化剂不仅可以利用从紫外光到近红外（NIR）区域的宽波长的太阳光，而且还可以实现高效的太阳能到氢气的转化，这是最具挑战性的任务之一。在此，我们设计了一种用黑磷（BP）敏化的 Au/LaTiO（BP-Au/LTO），作为高效的光催化剂用于 H 生产，这是一种具有宽带太阳响应的光催化剂。在波长大于 420nm 和 780nm 时，BP-Au/LTO 的最佳 H 生产速率分别约为 0.74 和 0.30mmol·g-1·h-1。BP 的宽吸收和等离子体 Au 的贡献增强了可见光和近红外光区域的光催化活性。时间分辨漫反射光谱表明，从激发的 BP 和 Au 到 LTO 的界面电子转移是有效的，这与观察到的高光活性是一致的。
