One-step synthesis of size-controlled Br-doped TiO 2 nanoparticles with enhanced visible-light photocatalytic activity
Source abstract
Abstract
Abstract This paper presents a simple one-step method for the fabrication of size-controlled Br-doped TiO 2 nanoparticles via a hydrothermal method. The as-prepared Br-doped TiO 2 photocatalysts were characterized using X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), N 2 desorption–adsorption measurements, X-ray photoelectron spectroscopy (XPS), and ultraviolet–visible (UV–vis) spectroscopy. The results indicate that the size of the Br-doped TiO 2 nanoparticles would decrease with increasing Br-doping concentration. The minimum size of the nanoparticles is approximately 4 nm. The as-prepared Br-doped TiO 2 photocatalyst is composed of the anatase and brookite phases. The Br-doping could efficiently narrow the band gap and broaden the visible-light response region. The dye on the surface of Br-doped TiO 2 could improve the photocatalytic performance during cyclic utilization because of the dye activation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. The preparation, characterization, and their photocatalytic activities of rare-earth-doped TiO2 nanoparticles10.1006/jcat.2002.3539 ↗
2. Photoelectron spectroscopic investigation of nitrogen-doped titania nanoparticles10.1021/jp0469160 ↗
3. Semiconductor-metal nanocomposites. Photoinduced fusion and photocatalysis of gold-capped TiO2 (TiO2/Gold) nanoparticles10.1021/jp0033263 ↗
4. Ecotoxic effect of photocatalytic active nanoparticles (TiO2) on algae and daphnids10.1065/espr2006.06.311 ↗
5. Influence of metal/metal ion concentration on the photocatalytic activity of TiO2-Au composite nanoparticles10.1021/la026478t ↗
6. Highly photoactive, low bandgap TiO2 nanoparticles wrapped by graphene10.1002/adma.201104110 ↗
7. Enhanced nitrogen doping in TiO2 nanoparticles10.1021/nl034332o ↗
8. Zhang, A study of quantum confinement properties of photogenerated charges in ZnO nanoparticles by surface photovoltage spectroscopy10.1021/jp037201k ↗
9. Raman investigation of nanosized TiO2: effect of crystallite size and quantum confinement10.1021/jp2122196 ↗
10. Preparation of mono-dispersed spherical titania nanoparticles with precise size control using ethylene glycol10.1007/s10971-016-4005-4 ↗
11. Simple size control of TiO2 nanoparticles and their electrochemical performance: emphasizing the contribution of the surface area to lithium storage at high-rates10.1039/C6NR00104A ↗
12. A review on the visible light active titanium dioxide photocatalysts for environmental applications10.1016/j.apcatb.2012.05.036 ↗
13. Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities10.1016/j.apcatb.2014.11.020 ↗
14. TiO2@carbon core/shell nanofibers: controllable preparation and enhanced visible photocatalytic properties10.1039/c1nr10269a ↗
15. Synthesis, characterization and photocatalytic evaluation of visible light activated C-doped TiO2 nanoparticles10.1088/0957-4484/23/29/294003 ↗
16. Effects of F- doping on the photocatalytic activity and microstructures of nanocrystalline TiO2 powders10.1021/cm020027c ↗
17. C-doped mesoporous anatase TiO2 comprising 10 nm crystallites10.1016/j.jcis.2016.01.080 ↗
18. Synthesis of mesoporous sulfur-doped Ta2O5 nanocomposites and their photocatalytic activities10.1016/j.jcis.2016.03.019 ↗
19. Hydrothermal preparation of visible-Light-Driven N-Br-Co doped TiO2 Photocatalysts10.1155/2008/563949 ↗
20. Photocatalytic activity enhancing for titanium dioxide by Co -doping with bromine and chlorine10.1021/cm035090w ↗
21. Synthesis and characterization of nitrogen-doped TiO2 nanophotocatalyst with high visible light activity10.1021/jp0685030 ↗
22. Low temperature preparation and visible light photocatalytic activity of mesoporous carbon-doped crystalline TiO210.1016/j.apcatb.2006.06.015 ↗
23. Understanding polymorphic phase transformation behavior during growth of nanocrystalline aggregates: insights from TiO210.1021/jp000499j ↗
24. Influence of hydroxyl contents on photocatalytic activities of polymorphic titania nanoparticles10.1016/j.matchemphys.2008.09.072 ↗
25. Visible light responsive iodine-doped TiO2 for photocatalytic reduction of CO2 to fuels10.1016/j.apcata.2011.04.032 ↗
26. Doping of TiO2 Polymorphs for altered optical and photocatalytic properties10.1155/2009/294042 ↗
27. Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications10.1021/cr0500535 ↗
28. Synthesis of rutile-brookite TiO2 by dealloying Ti-Cu amorphous alloy10.1016/j.materresbull.2015.09.022 ↗
29. Raman spectrum of anatase, TiO210.1002/jrs.1250070606 ↗
30. Visible light-sensitized S, N and C co-doped polymorphic TiO2 for photocatalytic destruction of microcystin-LR10.1016/j.apcatb.2013.07.058 ↗
31. Synthesis and dye-sensitized solar cell performance of nanorods/nanoparticles TiO2 from high surface area nanosheet TiO210.1166/jnn.2006.612 ↗
32. Sm-Doped tio2 nanoparticles with high photocatalytic activity for ARS dye under visible light synthesized by ultrasonic assisted sol-Gel method10.13005/ojc/320219 ↗
33. K.S. Yang, Y. Dai, B. Huang, Review of the structural stability, electronic and magnetic properties of nonmetal-doped TiO2 from first-principles calculations, arXiv preprint arXiv:1202.5651, (2012) 1–21.
34. Quantum size effect in TiO2 nanoparticles prepared by finely controlled metal assembly on dendrimer templates10.1038/nnano.2008.2 ↗
35. Low-temperature fabrication of brown TiO2 with enhanced photocatalytic activities under visible light10.1039/C5CC09176D ↗
36. Visible-light-activated nanoparticle photocatalyst of iodine-doped titanium dioxide10.1021/cm047891k ↗
37. Density functional characterization of the band edges, the band gap states, and the preferred doping sites of halogen-Doped TiO210.1021/cm801741m ↗
38. Photoelectrochemical and optical properties of nitrogen doped titanium dioxide films prepared by reactive DC magnetron sputtering10.1021/jp027345j ↗
39. Iodine doped anatase TiO2 photocatalyst with ultra-long visible light response: correlation between geometric/electronic structures and mechanisms10.1039/b820816f ↗
40. C-doped hollow TiO2 spheres: in situ synthesis, controlled shell thickness, and superior visible-light photocatalytic activity10.1016/j.apcatb.2014.10.063 ↗
41. Photocatalytic degradation of RhB by fluorinated Bi2WO6 and distributions of the intermediate products10.1021/es702495w ↗
42. Photocatalysis through excitation of adsorbates. 1. Highly efficient N-deethylation of rhodamine B adsorbed to cadmium sulfide10.1021/j100534a012 ↗
43. Preparation of novel titania photocatalysts with high activity10.1023/A:1017587016915 ↗
44. Small bandgap polymers for organic solar cells (polymer material development in the last 5 years)10.1080/15583720802231833 ↗