Carbon
Carbon
5 years ago

The fabrication of size-tunable nitrogen-doped dual-mesoporous carbon nanospheres with excellent thermal stability via colloidal silica driving co-assembly strategy

The fabrication of size-tunable nitrogen-doped dual-mesoporous carbon nanospheres with excellent thermal stability via colloidal silica driving co-assembly strategy
The synthesis of nitrogen-doped dual-mesoporous carbon nanospheres (N-DMCNs) with tunable sizes remains a great challenge due to the high cross-linking rate of carbon precursors and the weak interactions among the carbon precursors, inorganic components and templates. Herein, we demonstrated a colloidal silica nanoparticles (SN) driving co-assembly strategy for the first time to fabricate such N-DMCNs with hydrochloric acid (HCl) as a catalyst. Interestingly, SN not only acted as a pore-forming agent but also as a driving agent to induce the co-assembly of F127, carbon precursors and SN. The affinity between carbon precursor and template was enhanced by the Coulombic interaction originating from the I+X−S+ mechanism driven by the protonation under highly acidic conditions. Furthermore, the mesoporous structure and particle sizes could be facilely tuned by varying the HCl concentration, which was elucidated by both reversible reaction and nuclei growth mechanism. The as-prepared N-DMCNs could be potentially used as drug carrier for poorly water-soluble drug carbamazepine by improving its aqueous release rate. Compared with previously reported method, the present strategy has striking features such as convenient, inexpensive and environmentally friendly, especially affording a paradigm for the preparation of spherical mesoporous carbon nanoparticles through driving-induced assembly engineering.

Publisher URL: www.sciencedirect.com/science

DOI: S0008622317310084

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.