Surface hybridization of π-conjugate structure cyclized polyacrylonitrile and radial microsphere shaped TiO2 for reducing U(VI) to U(IV)

Yachao Xu; Hongsen Zhang; Qi Liu; Jingyuan Liu; Rongrong Chen; Jing Yu; Jiahui Zhu; Rumin Li; Jun Wang

doi:10.1016/j.jhazmat.2021.125812

Surface hybridization of π-conjugate structure cyclized polyacrylonitrile and radial microsphere shaped TiO₂ for reducing U(VI) to U(IV)

Yachao Xu, Hongsen Zhang^*, Qi Liu, Jingyuan Liu, Rongrong Chen, Jing Yu, Jiahui Zhu, Rumin Li, Jun Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

66 Citations (Scopus)

Abstract

It is still a challenge to obtain uranium (U) adsorbents with high selectivity, excellent cycle stability and excellent performance through design and synthesis. In this paper, the TiO₂/CPAN-AO catalyst was prepared by the hydrothermal method combined with high temperature cyclization dehydrogenation. TiO₂/CPAN-AO has excellent photocatalytic properties, which can reduce U(VI) to U(IV) quickly and selectively. The generated Z-type heterojunction promotes the reduction ability of photogenerated electrons, and obtains great selectivity to UO₂²⁺ (Uranyl ions) through the AO group. TiO₂/CPAN-AO with π-electron conjugated structure broadens the spectral range through surface hybridization and prolongs the lifetime of photo-generated charges. Under the induction of light, the uranium extraction capacity of TiO₂/CPAN-AO after 5 h of irradiation is about 2.38 g/g. TiO₂/CPAN-AO is a catalyst with enhanced adsorption capacity, making it possible to extract uranium from large-scale natural seawater in the future.

Original language	English
Article number	125812
Journal	Journal of Hazardous Materials
Volume	416
DOIs	https://doi.org/10.1016/j.jhazmat.2021.125812
Publication status	Published - 15 Aug 2021
Externally published	Yes

Keywords

Amidoxime
PAN
Photocatalysis
TiO
Uranium

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10.1016/j.jhazmat.2021.125812

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Xu, Y., Zhang, H., Liu, Q., Liu, J., Chen, R., Yu, J., Zhu, J., Li, R., & Wang, J. (2021). Surface hybridization of π-conjugate structure cyclized polyacrylonitrile and radial microsphere shaped TiO₂ for reducing U(VI) to U(IV). Journal of Hazardous Materials, 416, Article 125812. https://doi.org/10.1016/j.jhazmat.2021.125812

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title = "Surface hybridization of π-conjugate structure cyclized polyacrylonitrile and radial microsphere shaped TiO2 for reducing U(VI) to U(IV)",

abstract = "It is still a challenge to obtain uranium (U) adsorbents with high selectivity, excellent cycle stability and excellent performance through design and synthesis. In this paper, the TiO2/CPAN-AO catalyst was prepared by the hydrothermal method combined with high temperature cyclization dehydrogenation. TiO2/CPAN-AO has excellent photocatalytic properties, which can reduce U(VI) to U(IV) quickly and selectively. The generated Z-type heterojunction promotes the reduction ability of photogenerated electrons, and obtains great selectivity to UO22+ (Uranyl ions) through the AO group. TiO2/CPAN-AO with π-electron conjugated structure broadens the spectral range through surface hybridization and prolongs the lifetime of photo-generated charges. Under the induction of light, the uranium extraction capacity of TiO2/CPAN-AO after 5 h of irradiation is about 2.38 g/g. TiO2/CPAN-AO is a catalyst with enhanced adsorption capacity, making it possible to extract uranium from large-scale natural seawater in the future.",

keywords = "Amidoxime, PAN, Photocatalysis, TiO, Uranium",

author = "Yachao Xu and Hongsen Zhang and Qi Liu and Jingyuan Liu and Rongrong Chen and Jing Yu and Jiahui Zhu and Rumin Li and Jun Wang",

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year = "2021",

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doi = "10.1016/j.jhazmat.2021.125812",

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AU - Xu, Yachao

AU - Zhang, Hongsen

AU - Liu, Qi

AU - Liu, Jingyuan

AU - Chen, Rongrong

AU - Yu, Jing

AU - Zhu, Jiahui

AU - Li, Rumin

AU - Wang, Jun

PY - 2021/8/15

Y1 - 2021/8/15

N2 - It is still a challenge to obtain uranium (U) adsorbents with high selectivity, excellent cycle stability and excellent performance through design and synthesis. In this paper, the TiO2/CPAN-AO catalyst was prepared by the hydrothermal method combined with high temperature cyclization dehydrogenation. TiO2/CPAN-AO has excellent photocatalytic properties, which can reduce U(VI) to U(IV) quickly and selectively. The generated Z-type heterojunction promotes the reduction ability of photogenerated electrons, and obtains great selectivity to UO22+ (Uranyl ions) through the AO group. TiO2/CPAN-AO with π-electron conjugated structure broadens the spectral range through surface hybridization and prolongs the lifetime of photo-generated charges. Under the induction of light, the uranium extraction capacity of TiO2/CPAN-AO after 5 h of irradiation is about 2.38 g/g. TiO2/CPAN-AO is a catalyst with enhanced adsorption capacity, making it possible to extract uranium from large-scale natural seawater in the future.

AB - It is still a challenge to obtain uranium (U) adsorbents with high selectivity, excellent cycle stability and excellent performance through design and synthesis. In this paper, the TiO2/CPAN-AO catalyst was prepared by the hydrothermal method combined with high temperature cyclization dehydrogenation. TiO2/CPAN-AO has excellent photocatalytic properties, which can reduce U(VI) to U(IV) quickly and selectively. The generated Z-type heterojunction promotes the reduction ability of photogenerated electrons, and obtains great selectivity to UO22+ (Uranyl ions) through the AO group. TiO2/CPAN-AO with π-electron conjugated structure broadens the spectral range through surface hybridization and prolongs the lifetime of photo-generated charges. Under the induction of light, the uranium extraction capacity of TiO2/CPAN-AO after 5 h of irradiation is about 2.38 g/g. TiO2/CPAN-AO is a catalyst with enhanced adsorption capacity, making it possible to extract uranium from large-scale natural seawater in the future.

KW - Amidoxime

KW - PAN

KW - Photocatalysis

KW - TiO

KW - Uranium

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AN - SCOPUS:85104674380

SN - 0304-3894

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ER -

Surface hybridization of π-conjugate structure cyclized polyacrylonitrile and radial microsphere shaped TiO₂ for reducing U(VI) to U(IV)

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Keywords

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