Laser pulses extract hydrogen from ammonia dissolved in water without catalyst

This seems to be an interesting approach, but it may not be practical!

At least this article below mentions how dangerous hydrogen is. Compression and storage are other issues with hydrogen.

"Laser pulses that can shred ammonia molecules dissolved in water may offer a way to generate hydrogen gas without using heat, pressure, or catalysts ... The proof-of-principle work by researchers at Sun Yat-sen University demonstrates an unusual way to exploit ammonia as a carrier for green hydrogen, an idea that is quickly gaining traction in many industries. ...

Delivering that hydrogen to where it is needed is tricky and expensive, not least because it is explosive and flammable. It can be transported as a highly compressed gas or as a liquid at –253 °C, both of which are relatively expensive options for a fuel. ...
However, ... that the energy that would be gained from burning the hydrogen is less than half the amount of energy the laser uses to produce it, making it impractical for industrial use. ...
To overcome this drawback, the ... researchers suggest that their new process could instead be powered by a solar-pumped laser. ..."

From the abstract:

"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."

Lasers liberate hydrogen from ammonia water

Efficient and Rapid Hydrogen Extraction from Ammonia–Water via Laser Under Ambient Conditions without Catalyst (no public access)