Light-activated hydrolysis properties of Mg-based materials

Abstract

Hydrolysis of Mg-based materials is a promising technology for the development of portable hydrogen fuel cells.

A reusable dual functional Mo2C catalyst for rapid hydrogen evolution by Mg hydrolysis

“…[8][9][10] Therefore, hydrogen generation using low-cost metals, such as Mg, has attracted considerable interest. 11 Theoretically, approximately 933 mL g −1 hydrogen can be produced by Mg hydrolysis under ambient conditions with the reaction: 12 Mg + 2H 2 O / Mg(OH) 2 + H 2 , DH r = −354 kJ mol −1 (1) The only by-product of this reaction is magnesium hydroxide (Mg(OH) 2 ), which is environmentally friendly and can be easily regenerated to Mg. However, the reaction between Mg and water is rapidly disrupted owing to the formation of a hydroxide layer that covers the surface of unreacted Mg. 13,14 In recent studies, the kinetic problem of Mg hydrolysis was solved using acids (e.g., organic and hydrochloric acid), which can directly destroy the formed Mg(OH) 2 layer.…”

“…8–10 Therefore, hydrogen generation using low-cost metals, such as Mg, has attracted considerable interest. 11 Theoretically, approximately 933 mL g −1 hydrogen can be produced by Mg hydrolysis under ambient conditions with the reaction: 12 Mg + 2H 2 O → Mg(OH) 2 + H 2 , Δ H r = −354 kJ mol −1 …”