Titanium Dioxide for Hydrogen Economy: a Brief Review

Abstract

Our research is mainly focused on solving problems related to the production of hydrogen and its storage, as well as the creation of autonomous energy systems using renewable energy sources. Technological solutions for green energy depend on the development of new materials with desired properties that are able to reversibly accumulate hydrogen under appropriate environmental conditions (temperature, pressure) and on the technological processes allowing to obtain molecular hydrogen without significant energy consumption. The creation of materials with fundamentally new characteristics is inextricably linked with the production of nanoscale systems with properties that are controlled at the atomic and molecular level. The review considers the results of studies on the possibilities of using various nanostructures of titanium dioxide known for its catalytic properties and high stability in various applications of hydrogen energy. Much attention is paid to the promising direction of solid-state storage of hydrogen using hydride pastes and high-entropy alloys.

Effect of Heat Treatment on Titanium Dioxide Co-Doped with Tin and Sulfur

“…It is observed that the darker the color, the higher the ability to absorb light, so "black TiO2" shows the highest intensity of visible light absorption. Nanomaterials based on TiO2 and especially "black" are of great interest for photocatalytic hydrogen production using solar energy [13]. It is noted that "gray" titanium leads to the formation of peculiar defective catalytic centers, which make it possible to generate hydrogen without co-catalysts (usually Pt and other noble metals).…”