Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO<sub>2</sub> Nanospheres and Characterization by Small Angle X-Ray Scattering

Yu-Hua Zhang; Zi-Yu Zhang; Xin Liu; En-Guang Ma; Jiang-Tao Guo; Li Li; Xu-Hong Guo

doi:10.1007/s10118-024-3202-9

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Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO₂ Nanospheres and Characterization by Small Angle X-Ray Scattering

RESEARCH ARTICLE | Updated：2024-08-27

- Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO₂ Nanospheres and Characterization by Small Angle X-Ray Scattering
- Chinese Journal of Polymer Science Vol. 42, Issue 9, Pages: 1393-1400(2024)
- Affiliations：
  
  a.State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  b.Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology, College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
  c.Institute of Bast Fiber Crops & Center of Southern Economic Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China
- Author bio：
  
  lili76131@ecust.edu.cn (L.L.)
  guoxuhong@ecust.edu.cn (X.H.G.)
- Funds：
- DOI：10.1007/s10118-024-3202-9
  CLC：
- Received：11 May 2024，
  
  Revised：2024-06-20，
  
  Accepted：04 July 2024，
  
  Online First：08 August 2024，
  
  Published：01 September 2024
- Accepted：
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Zhang, Y. H.; Zhang, Z. Y.; Liu, X.; Ma, E. G.; Guo, J. T.; Li, L.; Guo, X. H. Spherical polyelectrolyte brush nanoreactor: preparation of hollow TiO₂ nanospheres and characterization by small angle x-ray scattering. Chinese J. Polym. Sci. 2024, 42, 1393–1400 DOI: 10.1007/s10118-024-3202-9.

Yu-Hua Zhang, Zi-Yu Zhang, Xin Liu, et al. Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO₂ Nanospheres and Characterization by Small Angle X-Ray Scattering[J]. Chinese Journal of Polymer Science, 2024, 42(9): 1393-1400. DOI: 10.1007/s10118-024-3202-9.
Zhang, Y. H.; Zhang, Z. Y.; Liu, X.; Ma, E. G.; Guo, J. T.; Li, L.; Guo, X. H. Spherical polyelectrolyte brush nanoreactor: preparation of hollow TiO₂ nanospheres and characterization by small angle x-ray scattering. Chinese J. Polym. Sci. 2024, 42, 1393–1400 DOI: 10.1007/s10118-024-3202-9. DOI：

Yu-Hua Zhang, Zi-Yu Zhang, Xin Liu, et al. Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO₂ Nanospheres and Characterization by Small Angle X-Ray Scattering[J]. Chinese Journal of Polymer Science, 2024, 42(9): 1393-1400. DOI: 10.1007/s10118-024-3202-9. DOI：

摘要

This paper reports the approach to preparing hollow titanium dioxide nanospheres by utilization of spherical polyelectrolyte brushes as nanoreactors and templates via a two-step hydrolysis-calcination process. The evolution of the structure was clearly characterized by small-angle X-ray scattering

highlighting the crucial effect of polyelectrolyte chains in the deposition. Produced hollow TiO2 nanospheres showed exceptional photocatalytic performance.

Abstract

Titanium dioxide (TiO

) hollow nanoparticles present significant potential for photocatalytic applications while their straightforward preparation with precise structure control is still challenging. This work reports the approach to preparing tunable hollow TiO

nanospheres by utilization of spherical polyelectrolyte brushes (SPB) as nanoreactors and templates. During the preparation

the evolution of the structure was characterized by small angle X-ray scattering (SAXS)

and in combination with dynamic light scattering and transmission electron microscopy. The formation of TiO

shell within the brush (SPB@TiO

) is confirmed by the significant increase of the electron density

and its internal structure has been analyzed by fitting SAXS data

which can be influenced by Titanium precursors and ammonia concentration. After calcining SPB@TiO

in a muffle furnace

hollow TiO

nanospheres are produced

and their transition to the anatase crystal form is triggered

as confirmed by X-ray diffraction analysis. Utilizing the advantages of their hollow structure

these TiO

nanospheres exhibit exceptional catalytic degradation efficiency of methylene blue (MB)

tetracycline (TC)

and 2

4-dichlorophenoxyacetic acid (2

4-D)

and also demonstrate excellent recyclability.

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Keywords

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Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO2 Nanospheres and Characterization by Small Angle X-Ray Scattering

DOI：10.1007/s10118-024-3202-9

摘要

Abstract

关键词

Keywords

references

Spherical Polyelectrolyte Brush Nanoreactor: Preparation of Hollow TiO₂ Nanospheres and Characterization by Small Angle X-Ray Scattering