Yan Bo, Li Yinwu, Cao Weiwei, Zeng Zhiping, Liu Pu, Ke Zhuofeng, Yang Guowei
State Key Laboratory of Optoelectronic Materials, Technologies and Nanotechnology Research Center, School of Materials Science & Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China.
J Am Chem Soc. 2024 Feb 21;146(7):4864-4871. doi: 10.1021/jacs.3c13459. Epub 2024 Feb 9.
As a good carrier of hydrogen, ammonia-water has been employed to extract hydrogen in many ways. Here, we demonstrate a simple, green, ultrafast, and highly efficient method for hydrogen extraction from ammonia-water by laser bubbling in liquids (LBL) at room temperature and ambient pressure without catalyst. A maximum apparent yield of 33.7 mmol/h and a real yield of 93.6 mol/h were realized in a small operating space, which were far higher than the yields of most hydrogen evolution reactions from ammonia-water under ambient conditions. We also established that laser-induced cavitation bubbles generated a transient high temperature, which enabled a very suitable environment for hydrogen extraction from ammonia-water. The laser used here can serve as a demonstration of potentially solar-pumped catalyst-free hydrogen extraction and other chemical synthesis. We anticipate that the LBL technique will open unprecedented opportunities to produce chemicals.
作为一种良好的氢载体，氨水已被用于多种方式提取氢气。在此，我们展示了一种简单、绿色、超快且高效的方法，即在室温和常压下无催化剂的情况下，通过液体中的激光鼓泡（LBL）从氨水中提取氢气。在一个小的操作空间内实现了33.7 mmol/h的最大表观产率和93.6 mol/h的实际产率，这远远高于在环境条件下从氨水中进行的大多数析氢反应的产率。我们还确定，激光诱导的空化泡产生了瞬态高温，这为从氨水中提取氢气创造了非常合适的环境。这里使用的激光可作为潜在的太阳能泵浦无催化剂氢气提取及其他化学合成的一个示例。我们预计LBL技术将为化学品生产带来前所未有的机遇。
