Controlled synthesis of Pt-loaded yolk–shell TiO2@SiO2 nanoreactors as effective photocatalysts for hydrogen generation

doi:10.1007/s11706-022-0591-y

Frontiers of Materials Science

2022, Vol. 16

Issue (1): 220591 https://doi.org/10.1007/s11706-022-0591-y

本期目录

Controlled synthesis of Pt-loaded yolk–shell TiO₂@SiO₂ nanoreactors as effective photocatalysts for hydrogen generation

Min SHI, Niannian HU, Haimei LIU, Cheng QIAN, Chang LV, Sheng WANG(

)

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China

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Abstract：

Yolk–shell and hollow structures are powerful platforms for controlled release, confined nanocatalysis, and optical and electronic applications. This contribution describes a fabrication strategy for a yolk–shell nanoreactor (NR) using a post decoration approach. The widely studied yolk–shell structure of silica-coated TiO₂ (TiO₂@SiO₂) was used as a model. At first, anatase TiO₂ spheres were prepared, and subsequently were given a continuous coating of carbonaceous and silica layers. Finally, the carbonaceous layer was removed to produce a yolk–shell structure TiO₂@SiO₂. By using an in-situ photodeposition method, Pt-encased spheres (Pt-TiO₂@SiO₂) were synthesized with Pt nanoparticles grown on the surface of the TiO₂ core, which contained void spaces suitable for use as NRs. The NR showed enhanced hydrogen production with a rate of 24.56 mmol·g⁻¹·h⁻¹ in the presence of a sacrificial agent under simulated sunlight. This strategy holds the potential to be extended for the synthesis of other yolk–shell photocatalytic NRs with different metal oxides.

Key words： nanoreactor TiO₂ SiO₂ photocatalyst hydrogen generation

收稿日期: 2021-11-22 出版日期: 2022-04-06

Corresponding Author(s): Sheng WANG

作者简介:

Peng Lu, Renxing Wang, and Yue Xing contributed equally to this work.

引用本文:

. [J]. Frontiers of Materials Science, 2022, 16(1): 220591.
Min SHI, Niannian HU, Haimei LIU, Cheng QIAN, Chang LV, Sheng WANG. Controlled synthesis of Pt-loaded yolk–shell TiO₂@SiO₂ nanoreactors as effective photocatalysts for hydrogen generation. Front. Mater. Sci., 2022, 16(1): 220591.

链接本文:

https://academic.hep.com.cn/foms/CN/10.1007/s11706-022-0591-y
https://academic.hep.com.cn/foms/CN/Y2022/V16/I1/220591

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