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Bushy Sphere Dendrite with Husk-shaped Branches Axially Spreading out from Its Core for Photo-catalytic Oxidation/ Remediation of Toxins

Abstract

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

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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, Accepted Manuscript
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    Bushy Sphere Dendrite with Husk-shaped Branches Axially Spreading out from Its Core for Photo-catalytic Oxidation/ Remediation of Toxins

    M. Shenashen, S. KAWADA, M. Selim, W. Morsi, H. Yamaguchi, A. Alhamid, N. Ohashi, I. Ichinose and S. El-Safty, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR01092C

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