Citation: Yang-Hong Wu, Kai-Yan Yuan, Yan-E He, Heng Wu, Li-Jiao Ma, Gang Wang, Xiao-Dong Qiao, Bing-Xin Lei, Zhen-Fan Sun, Zhao-Qing Liu. A topotactic tailored synthesis of waxberry-like mixed-phase TiO₂ hollow spheres for dye-sensitized solar cells[J]. Chinese Chemical Letters, ;2022, 33(2): 963-967. doi: 10.1016/j.cclet.2021.07.032 shu

A topotactic tailored synthesis of waxberry-like mixed-phase TiO₂ hollow spheres for dye-sensitized solar cells

Yang-Hong Wu ^a ,
Kai-Yan Yuan ^a ,
Yan-E He ^a ,
Heng Wu ^a ,
Li-Jiao Ma ^a ,
Gang Wang ^a ,
Xiao-Dong Qiao ^a ,
Bing-Xin Lei ^{a, *,} ,
Zhen-Fan Sun ^a ,
Zhao-Qing Liu ^{b, *,}

a.
School of Chemistry and Chemical Engineering, Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province, Key Laboratory of Electrochemical Energy Storage and Light Energy Conversion Materials of Haikou City, Hainan Normal University, Haikou 571158, China
b.
School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center, Guangzhou University, Guangzhou 510006, China

leibx@hainnu.edu.cn

lzqgzu@gzhu.edu.cn

Received Date: 5 April 2021
Revised Date: 25 June 2021
Accepted Date: 9 July 2021
Available Online: 16 July 2021

Figures(4)

The waxberry-like mixed-phase TiO₂ hollow microstructures (WMTHMs) are controllably prepared via a topotactic synthetic method, involving the synthesis of monodispersed CaTiO₃ precursors by a solvothermal method and subsequently transforming them into TiO₂ through a Na₂EDTA-assisted ion-exchange process. The ratio of anatase-rutile is adjustable, and the two phases are connected well with each other. WMTHMs are composed of radially aligned nanorods, speeding up the electron transport. The optimum WMTHMs sample shows a specific surface area of 68.05 m²/g and exhibits an excellent light scattering capacity. The cell based on WMTHMs light scattering layer obtained an optimal efficiency of 9.12%. The improvement of cell efficiency is mainly attributed to the high specific surface area, the efficient light scattering, the appropriate ratio of anatase-rutile, the staggered bandgap structure, and the convenient one-dimensional electron transport channel.
- Titanium dioxide,
- Phase composition,
- Topotactic methodology,
- Hollow sphere,
- Dye-sensitized solar cell
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A topotactic tailored synthesis of waxberry-like mixed-phase TiO2 hollow spheres for dye-sensitized solar cells

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通讯作者: 陈斌, bchen63@163.com

A topotactic tailored synthesis of waxberry-like mixed-phase TiO₂ hollow spheres for dye-sensitized solar cells