Template-sacrificial conversion of MnCO3 microspheres to fabricate Mn-doped TiO2 visible light photocatalysts
Source abstract
Abstract
This study demonstrates a one-step hydrothermal approach to prepare novel spherical microstructures of Mn-doped TiO2 by the in situ template-sacrificial conversion of MnCO3 microspheres grown in a radial direction. After a hydrothermal reaction, MnCO3 microspheres were completely dissolved by HF as a hydrolysis product of [NH4]2TiF6. Furthermore, the hollow and radially porous structures of Mn-doped TiO2 microspheres were obtained without and with stirring during hydrothermal reaction, respectively. The prepared anatase TiO2 microspheres were fully characterized in terms of particle size, morphology, chemical composition, and porosity by X-ray diffraction, scanning and transmission electron microscopies, X-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller method, respectively. The photocatalytic activity of the prepared TiO2 microspheres was evaluated by the degradation of methylene blue under UV and visible light irradiations. Our versatile approach can be used for different types of metal carbonates to fabricate morphology controllable metal oxide nano- and microstructures.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (47)
Show source-provided references
1. Design, synthesis and applications of core–shell, hollow core, and nanorattle multifunctional nanostructures10.1039/C5NR07004J ↗
2. Synthesis, properties, and applications of hollow micro-/nanostructures10.1021/acs.chemrev.5b00731 ↗
3. Facile synthesis of monodisperse poly(MAA/EGDMA)/Fe3O4 hydrogel microspheres with hollow structures for drug delivery systems: the hollow structure formation mechanism and effects of various metal ions on structural changes10.1039/C4RA13904F ↗
4. Highly monodisperse zirconia-coated silica spheres and zirconia/silica hollow spheres with remarkable textural properties10.1002/ange.200603507 ↗
5. Hematite hollow spheres with a mesoporous shell: controlled synthesis and applications in gas sensor and lithium ion batteries10.1021/jp803582d ↗
6. Single-crystalline rutile TiO2 hollow spheres: room-temperature synthesis, tailored visible-light-extinction, and effective scattering layer for quantum dot-sensitized solar cells10.1021/ja2049463 ↗
7. Surfactant-free NH4TiOF3 crystals: self-assembly on solid surfaces and room-temperature hydrolysis for hollow TiO2 structures with high photocatalytic activity10.1246/cl.150017 ↗
8. Substrate-specific photocatalytic activities of TiO2 and multiactivity test for water treatment application10.1021/es071470x ↗
9. TiO2−graphene nanocomposites for gas-phase photocatalytic degradation of volatile aromatic pollutant: is TiO2− graphene truly different from other TiO2−carbon composite materials?10.1021/nn1024219 ↗
10. New nanostructured TiO2 for direct electrochemistry and glucose sensor applications10.1002/adfm.200700728 ↗
11. Nanoassembled thin film gas sensors. III. Sensitive detection of amine odors using TiO2/poly (acrylic acid) ultrathin film quartz crystal microbalance sensors10.1021/ac901813q ↗
12. Use of highly-ordered TiO2 nanotube arrays in dye-sensitized solar cells10.1021/nl052099j ↗
13. Fabrication of Au@ Ag core/shell nanoparticles decorated TiO2 hollow structure for efficient light-harvesting in dye-sensitized solar cells10.1021/am508065n ↗
14. Sulphur–TiO2 yolk–shell nanoarchitecture with internal void space for long-cycle lithium-sulphur batteries10.1038/ncomms2327 ↗
15. Rutile TiO2 submicroboxes with superior lithium storage properties10.1002/anie.201411353 ↗
16. Titanium dioxide (TiO2) mesocrystals: synthesis, growth mechanisms and photocatalytic properties10.3390/catal9010091 ↗
17. Heterogeneous photocatalysis for selective formation of high-value-added molecules: some chemical and engineering aspects10.1021/acscatal.8b03093 ↗
18. TiO2 photocatalysis: design and applications10.1016/j.jphotochemrev.2012.06.001 ↗
19. Efficient H2 production by photocatalytic water splitting under UV or solar light over variously modified TiO2-based catalysts10.1016/j.ijhydene.2019.04.035 ↗
20. Doping high-surface-area mesoporous TiO2 microspheres with carbonate for visible light hydrogen production10.1039/C4EE00472H ↗
21. Dye-sensitized solar cells based on hollow anatase TiO2 spheres prepared by self-transformation method10.1016/j.electacta.2009.09.021 ↗
22. Synthesis of spheres with complex structures using hollow latex cages as templates10.1002/adfm.200500070 ↗
23. A simple two-step template approach for preparing carbon-doped mesoporous TiO2 hollow microspheres10.1021/jp9047693 ↗
24. Fabrication and application of inorganic hollow spheres10.1039/c1cs15103g ↗
25. Visible-light photocatalysis in nitrogen-doped titanium oxides10.1126/science.1061051 ↗
26. A review and recent developments in photocatalytic water-splitting using TiO2 for hydrogen production10.1016/j.rser.2005.01.009 ↗
27. Mn-doped TiO2 nanopowders with remarkable visible light photocatalytic activity10.1016/j.matlet.2011.04.010 ↗
28. Fabrication of predominantly Mn4+-doped TiO2 nanoparticles under equilibrium conditions and their application as visible-light photocatalyts10.1002/asia.201402114 ↗
29. Photoelectric conversion performances of Mn doped TiO2 under >420 nm visible light irradiation10.1016/j.jscs.2015.05.001 ↗
30. Red shift in manganese-and iron-doped TiO2: a DFT+U analysis10.1021/jp810923r ↗
31. Titania nanocoating on MnCO3 microspheres via liquid-phase deposition for fabrication of template-assisted core–shell-and hollow-structured composites10.1021/am404052p ↗
32. High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity10.1038/ncomms8872 ↗
33. A general and mild approach to controllable preparation of manganese-based micro- and nanostructured bars for high performance lithium-ion batteries10.1002/anie.201511196 ↗
34. General synthesis of xLi2MnO3·(1−x)LiNi1/3 Co1/3Mn1/3O2 (x = 1/4, 1/3, and 1/2) hollow microspheres towards enhancing the performance of rechargeable lithium ion batteries10.1039/C6TA04219H ↗
35. Cage-like MnO2-Mn2O3 hollow spheres with high specific capacitance and high rate capability as supercapacitor material10.1016/j.electacta.2016.10.058 ↗
36. Double-shelled hollow microspheres of LiMn2O4 for high-performance lithium ion batteries10.1039/c1jm10924c ↗
37. Haynes · 2017
38. Optimized silicon nanostructures formed by one-step metal-assisted chemical etching of Si(111) wafers for GaN deposition10.1149/2.009406jss ↗
39. Outstanding supercapacitive properties of Mn-doped TiO2 micro/nanostructure porous film prepared by anodization method10.1038/srep22634 ↗
40. Tailored visible-light driven anatase TiO2 photocatalysts based on controllable metal ion doping and ordered mesoporous structure10.1039/c2jm15965a ↗
41. Anatase TiO2 single crystals with a large percentage of reactive facets10.1038/nature06964 ↗
42. Preparation, photocatalytic activity, and mechanism of nano-TiO2 co-doped with nitrogen and iron (III)10.1021/jp0727493 ↗
43. Structural and photocatalytic studies of Mn doped TiO2 nanoparticles10.1016/j.saa.2012.08.009 ↗
44. 1-D and 2-D morphology of metal cation co-doped (Zn, Mn) TiO2 and investigation of their photocatalytic activity10.1016/j.apsusc.2017.08.226 ↗
45. A comparative study for removal of different dyes over M/TiO2 (M = Cu, Ni, Co, Fe, Mn and Cr) photocatalysts under visible light irradiation10.1016/j.jphotochem.2015.05.037 ↗
46. Preparations and photocatalytic properties of visible-light-active zinc ferrite-doped TiO2 photocatalyst10.1021/jp806704y ↗
47. The layered double hydroxide route to BiZn co-doped TiO2 with high photocatalytic activity under visible light10.1016/j.jhazmat.2015.02.013 ↗