This is your today's third question. You definitely need to learn the basics of

chemistry and physics.

Thank you for your response professor . My inquiry seeks to explore how silicon, which can be derived from sand, can react with water under specific conditions to produce hydrogen. While sand, primarily composed of silicon dioxide (SiO₂), does not inherently contain hydrogen, I am interested in investigating cost-effective methods in which sand plays a role in facilitating or catalyzing the extraction of hydrogen.

Thank you for your response professor . My inquiry seeks to explore how silicon, which can be derived from sand, can react with water under specific conditions to produce hydrogen. While sand, primarily composed of silicon dioxide (SiO₂), does not inherently contain hydrogen, I am interested in investigating cost-effective methods in which sand plays a role in facilitating or catalyzing the extraction of hydrogen.

The solar light induced generation of H2 from water is called water splitting. It's a very complex process. Before to start working on this problem you must learn at least basics.

Thank you for your insight. I completely agree that having a solid understanding of the basics is essential before tackling such a complex topic. However, my question specifically focuses on the production of native hydrogen from rocks, rather than from water splitting.

What is the native hydrogen?" Natural hydrogen?

Hydrogen is a small molecule with a large diffusion coefficient. Therefore, it quickly escapes from porous material.

"I am interested in investigating cost-effective methods in which sand plays a role in facilitating or catalyzing the e​x​t​raction of H2" Sand is not porous and does not have hydrogen atom to produce H2. Rocks (not SiO2) can be a reducing material able to reduce water. Rocks might catalyze this reaction. H2O + 2e -> H2 + O(2-)

This is a half reaction of water splitting, which is thermodynamically unfavorable. THE solar energy is the source of energy. Therefore, water splitting is considered as the most promising way to produce H2.

My objective is to produce hydrogen in desert environments using a sand matrix that supports microbial growth. The porous structure of sand allows hydrogen-producing bacteria to thrive, while organic substrates, mineral catalysts, and bio-enhancers enhance microbial activity. This process, combined with renewable energy, creates a bio-reactive system for sustainable hydrogen production.

As I wrote, the reduction of water to hydrogen is thermodynamicaly uphill. You need to feed your bacteria. The food can be produced from CO2 and water by the artificial photosynthesis (similar to water splitting) or from the growing algae. Both are problematic. Plenty of sand in desert is definitely beneficial.