Jump to main content
Jump to site search

Issue 23, 2017
Previous Article Next Article

Bushy sphere dendrites with husk-shaped branches axially spreading out from the core for photo-catalytic oxidation/remediation of toxins

Author affiliations

Abstract

This work describes densely interlinked bushy “tree-like chains” characterized by neatly branched sphere dendrites (bushy sphere dendrites, BSD) with long fan-like, husk-shaped branching paths that extend longitudinally from the core axis of the {110}-exposed plane. We confirmed that the hierarchical dendrite surfaces created bowls of swirled caves along the tree-tube in the mat-like branches. These surfaces had high-index catalytic site facets associated with the formation of ridges/defects on the dominant {110}-top-cover surface. These swirled caves along the branches were completely filled with 50–100 nm poly-CN nano-sphere-fossils with orb-like appearance. Such structural features are key issues of the inherent surface reactivity of a powerful catalyst/trapper, enabling photocatalytic oxidation and trapping of extremely toxic arsenite (AsO33−) species and photo-induced recovery of arsenate (AsO43−) products from catalyst surfaces. The light-induced release of produced AsO43− from BSD indicates (i) highly controlled waste collection/management (i.e., recovery), (ii) low cost and ecofriendly photo-adsorbent, (iii) selective trapping of real sample water to produce water-free arsenite species; (iv) multiple reuse cycles of catalysts (i.e., reduced waste volume). Matrixed dendrites, covered with 3D microscopic sphere cores that capture solar-light, trap toxins, and are triggered by light, were designed. These dendrites can withstand indoor and outdoor recovery of toxins from water sources.

Graphical abstract: Bushy sphere dendrites with husk-shaped branches axially spreading out from the core for photo-catalytic oxidation/remediation of toxins

Back to tab navigation

Supplementary files

Publication details

The article was received on 14 Feb 2017, accepted on 06 May 2017 and first published on 10 May 2017


Article type: Paper
DOI: 10.1039/C7NR01092C
Citation: Nanoscale, 2017,9, 7947-7959
  •   Request permissions

    Bushy sphere dendrites with husk-shaped branches axially spreading out from the core for photo-catalytic oxidation/remediation of toxins

    M. A. Shenashen, S. Kawada, M. M. Selim, W. M. Morsy, H. Yamaguchi, A. A. Alhamid, N. Ohashi, I. Ichinose and S. A. El-Safty, Nanoscale, 2017, 9, 7947
    DOI: 10.1039/C7NR01092C

Search articles by author

Spotlight

Advertisements