Hong Wang, Bahareh Khezri, Martin Pumera Chem

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Catalytic DNA-Functionalized Self-Propelled Micromachines for Environmental Remediation Hong Wang, Bahareh Khezri, Martin Pumera Chem Volume 1, Issue 3, Pages 473-481 (September 2016) DOI: 10.1016/j.chempr.2016.08.009 Copyright © 2016 Elsevier Inc. Terms and Conditions

Chem 2016 1, 473-481DOI: (10.1016/j.chempr.2016.08.009) Copyright © 2016 Elsevier Inc. Terms and Conditions

Figure 1 Working Principle of the Micromachines (A) Mechanism of the interaction between Hg(II) and T-T base pairs. (B) Schematic illustration of DNA-functionalized self-propelled micromachines for the removal of Hg(II) from aqueous solution. Chem 2016 1, 473-481DOI: (10.1016/j.chempr.2016.08.009) Copyright © 2016 Elsevier Inc. Terms and Conditions

Figure 2 Characterization of Prepared Au/Pt Microtubes (A–C) SEM images of a microtube at 6,000× magnification (A), three microtubes in a row at 5,000× magnification (B), and the top view of a microtube at 20,000× magnification (C). (D) EDX elemental mapping showing the distribution of Au and Pt in the microtubes. Scale bars represent 2 μm (A, B, and D) and 1 μm (C). Chem 2016 1, 473-481DOI: (10.1016/j.chempr.2016.08.009) Copyright © 2016 Elsevier Inc. Terms and Conditions

Figure 3 Motion Studies of the Micromachines (A) Influence of functionalization with DNA and the presence of Hg(II) on the mobility of microtubes. The average velocity was calculated from ten independent motion studies. The error bars indicate the SD. (B and C) Propulsion of DNA-functionalized microtubes in Hg(II)-polluted water in a linear way (B) and a circular way (C). Scale bars represent 20 μm. Chem 2016 1, 473-481DOI: (10.1016/j.chempr.2016.08.009) Copyright © 2016 Elsevier Inc. Terms and Conditions

Figure 4 Studies on the Hg(II) Removal Ability of DNA-Functionalized Microtubes (A) Static bare (control) and functionalized microtubes in Hg(II)-polluted water. (B) Moving bare (control) and functionalized microtubes in Hg(II)-polluted water containing 3 wt % H2O2 and 0.3 wt % SDS. Chem 2016 1, 473-481DOI: (10.1016/j.chempr.2016.08.009) Copyright © 2016 Elsevier Inc. Terms and Conditions