γ-Fe2O3@Ag-mSiO2NH2 magnetic Janus micromotor for active water remediation
Source abstract
Abstract
Abstract Micromotors have hold great promise for environmental remediation. Herein, we reported a novel γ-Fe2O3@Ag-mSiO2 NH2 magnetic Janus micromotor for dynamic removal of heavy metal ions and organic pollutants from water. The as-prepared Janus micromotors displayed unique core-shell structure composed of amino-functionalized meso‑SiO2 shell and γ-Fe2O3 magnetic core, and could be propelled by O2 bubbles generated by Ag-catalyzed decomposition of H2O2. This Janus micromotor could move with a high velocity of 203.06 ± 10.6 μm s−1 (about 253.8 body lengths s–1) in 10 wt.% H2O2 solution. γ-Fe2O3@Ag-mSiO2 NH2 magnetic Janus micromotor showed much higher removal capacities for Cu2+ (15.59 mg g−1) and doxycycline (31.45 mg g−1) than its static control samples due to the synergy of self-propulsive movement and amino-functionalized porous core-shell structure. Furthermore, the magnetic γ-Fe2O3 cores enabled the remote magnetic control on the movement direction and magnetic recycling. This work provides a new strategy for environmental pollutants treatment.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Micro and Nano Robotics · Pickering emulsions and particle stabilization · Modular Robots and Swarm Intelligence
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Activated carbon fibers as an excellent partner of Fenton catalyst for dyes decolorization by combination of adsorption and oxidation10.1016/j.cej.2014.04.088 ↗
2. A comprehensive review on magnetic carbon nanotubes and carbon nanotube-based buckypaper for removal of heavy metals and dyes10.1016/j.jhazmat.2021.125375 ↗
3. In situ synthesis of nanocomposite materials based on modified-mesoporous silica MCM-41 and methyl methacrylate for copper (II) adsorption from aqueous solution10.1007/s13738-019-01628-z ↗
4. Black-phosphorus-enhanced bubble-propelled autonomous catalytic microjets10.1016/j.apmt.2017.08.007 ↗
5. Dye removal by laccase-functionalized micromotors
6. Effective removal of inorganic and organic heavy metal pollutants with poly(amino acid)-based micromotors10.1039/C9NR09813E ↗
7. Dynamic adsorption/desorption of p-xylene on nanomorphic MFI zeolites: effect of zeolite crystal thickness and mesopore architecture10.1016/j.jhazmat.2020.123659 ↗
8. Graphene-based Janus micromotors for the dynamic removal of pollutants10.1039/C5TA09850E ↗
9. Micromotors for environmental applications: a review
10. Decorating of ultra-small and recyclable nanoscale zero-valent iron on NH2-SiO2 for enhanced high-performance removal of water pollutants10.1016/j.jallcom.2018.12.128 ↗
11. Beyond platinum: bubble-propelled micromotors based on Ag and MnO2 catalysts10.1021/ja411705d ↗
12. Simple and continuous fabrication of self-propelled micromotors with photocatalytic metal-organic frameworks for enhanced synergistic environmental remediation10.1021/acsami.0c11283 ↗
13. Graphene-based helical micromotors constructed by “microscale liquid rope-coil effect” with microfluidics10.1021/acsnano.0c07067 ↗
14. Organic dye removal by MnO2 and Ag micromotors under various ambient conditions: the comparison between two abatement mechanisms10.1016/j.chemosphere.2017.06.011 ↗
15. Mesoporous SiO2/BiVO4/CuOx nanospheres for Z-scheme, visible light aerobic C–N coupling and dehydrogenation10.1016/j.apmt.2019.01.010 ↗
16. Facile synthesis of hollow mesoporous silica nanoparticles with in-situ formed CuS templates10.1016/j.matlet.2019.04.100 ↗
17. Preparation of amino-functionalized Fe3O4@mSiO2 core-shell magnetic nanoparticles and their application for aqueous Fe3+ removal10.1016/j.jhazmat.2017.07.062 ↗
18. Biphasic synthesis of amine-functionalized mesoporous silica nanospheres (MSN-NH2) and its application for removal of ferrous (Fe2+) and copper (Cu2+) ions10.1016/j.powtec.2016.09.014 ↗
19. Enzymatic micromotors as a mobile photosensitizer platform for highly efficient on-chip targeted antibacteria photodynamic therapy
20. Self-propelled micromotors based on Au-mesoporous silica nanorods10.1039/C5NR02545A ↗
21. A remotely steerable Janus micromotor adsorbent for the active remediation of Cs-contaminated water10.1016/j.jhazmat.2019.02.054 ↗
22. Bilayer tubular micromotors for simultaneous environmental monitoring and remediation10.1021/acsami.8b10921 ↗
23. Fluorescent self-propelled covalent organic framework as a microsensor for nitro explosive detection10.4028/b-S8Aj0Z ↗
24. One-step fabrication of dual optically/magnetically modulated walnut-like micromotor10.1021/acs.langmuir.8b02904 ↗
25. ZnCr-LDH/N-doped graphitic carbon-incorporated g-C3N4 2D/2D nanosheet heterojunction with enhanced charge transfer for photocatalysis10.1016/j.materresbull.2018.03.010 ↗
26. Pseudo second order kinetics and pseudo isotherms for malachite green onto activated carbon: comparison of linear and non-linear regression methods10.1016/j.jhazmat.2006.01.003 ↗
27. Comparison between linear and non-Linear fitting methods in adsorption process10.14233/ajchem.2014.17276 ↗
28. Hydrogen production from bio-derived biphasic photoreforming over a raspberry-like amphiphilic Ag2O-TiO2/SiO2 catalyst10.1016/j.cej.2019.03.259 ↗
29. Comparative study of core-shell nanostructures based on amino-functionalized Fe3O4@SiO2 and CoFe2O4@SiO2 nanocomposites10.1016/j.jallcom.2018.06.246 ↗
30. The effect of solvent parameters on properties of iron-based silica binary aerogels as adsorbents10.1016/j.jcis.2019.04.071 ↗
31. Surface functionalization of MIL-101(Cr) by aminated mesoporous silica and improved adsorption selectivity toward special metal ions10.1039/C9DT00501C ↗
32. Biosynthesis of Ag@CuO core–shell nanostructures for non-enzymatic glucose sensing using screen-printed electrode
33. One-pot synthesis of mesoporous interconnected carbon-encapsulated Fe3O4 nanospheres as superior anodes for Li-ion batteries10.1039/c2ra01241c ↗
34. Molybdenum anchored on NH2-modified spherical SiO2: a highly efficient and stable catalyst for oxidative desulfurization of fuel oil10.1002/aoc.4521 ↗
35. Iron oxide nanoparticles immobilized to mesoporous NH2-SiO2 spheres by sulfonic acid functionalization as highly efficient catalysts10.1039/C4NR05884D ↗
36. Efficient synthesis of monolayer carbon nitride 2D nanosheet with tunable concentration and enhanced visible-light photocatalytic activities10.1016/j.apcatb.2014.07.053 ↗
37. Bioinspired Pt-free molecularly imprinted hydrogel-based magnetic Janus micromotors for temperature-responsive recognition and adsorption of erythromycin in water10.1016/j.cej.2019.03.101 ↗
38. Biotemplated synthesis of mesoporous silica for doxycycline removal. Effect of pH, temperature, ionic strength and Ca2+ concentration on the adsorption behaviour10.1016/j.micromeso.2016.01.035 ↗
39. Adsorption performance of a polysaccharide composite hydrogel based on crosslinked glucan/chitosan for heavy metal ions10.1016/j.compositesb.2019.03.082 ↗
40. In situ loading of highly-dispersed CuO nanoparticles on hydroxyl-group-rich SiO2-AlOOH composite nanosheets for CO catalytic oxidation10.1016/j.cej.2017.02.043 ↗
41. A mild and facile synthesis of amino functionalized CoFe2O4@SiO2 for Hg (II) Removal10.3390/nano8090673 ↗