5 years ago

Two-Dimensional MXene/A-TiO2 Composite with Unprecedented Catalytic Activation for Sodium Alanate

Two-Dimensional MXene/A-TiO2 Composite with Unprecedented Catalytic Activation for Sodium Alanate
Differing from graphene with a carbon element component, analogous metallic-graphene two-dimensional layered titanium carbide (2D MXene) provides more opportunities to achieve better surface functionalization. Herein, a thin layered 2D MXene/A-TiO2 composite was prepared by chemical exfoliation and hydrothermal decomposition. The 2D MXene/A-TiO2 composite exhibits high catalytic activity in the adsorption and desorption of hydrogen kinetics for NaAlH4. The critical dehydrogenation temperature of NaAlH4 is ∼90°C. The first-stage dehydrogenation (∼3.0wt.%) is accomplished in 50min at 110°C. After the first activated cycle, a constant cycling capacity of 4.7wt.% is remained for a minimum of five cycles tests. It is found that the excellent catalytic activation should be ascribed to the synergistic effect between homogenous distributed Ti-H and TiC, which are originated from MXene/A-TiO2. The results represent a new step forward in the applications of MXene catalytic dehydrogenation and provide new strategies in the quest for new functional MXene derivatives by in-situ modification.

Publisher URL: www.sciencedirect.com/science

DOI: S0920586117307708

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.