# Generation of Ultra-Pure Hydrogen Gas Utilizing Nanoporous Silicon Technology

“Generation of Ultra-Pure Hydrogen Gas Utilizing Nanoporous Silicon Technology” (2026), by Dina Bashir et al. Materials Science research paper. Original abstract below, unchanged. A free PDF is available.

- Authors: Dina Bashir, Marwa M. Nabil, Rafeek Baseily, Morsy Abo-Yossef, Abd El-Hady
- Published: October 29, 2026
- Field: Materials Science
- DOI: https://doi.org/10.21203/rs.3.rs-11012714/v1
- Free PDF: https://www.researchsquare.com/article/rs-11012714/latest.pdf

## Abstract

Hydrogen energy is considered a renewable energy source as well as a future fuel choice. Nanoporous-silicon (NPS) is needed in many fields such as sensors, optoelectronics, drugs and hydrogen production. This study aims to produce ultra-pure hydrogen gas and (NPS-powder) from Si-powder processing at different KOH %weights as a base medium and different n-propanol % volumes as a wetting agent. Alkaline etching of Si-powder to produce (NPS) is also considered a source of H 2 -production. The results show the high purity of H 2 gas (99.99%) produced through this process. The method provides for generating H 2 gas at room temperature from commercial Si-powder is processing, without using any source of energy and at a stable, high generation rate (≈ 1 L / 20 min). XRD results confirmed the formation of (NPS), its particle size ranged (from 0.05 to 4.00 µm). In addition, TEM measurements indicated the existence of a nano-ribbon structure with the polycrystalline nature of (NPS).

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