Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels

Xiao-Xiao Guo; Shi-Chang Hou; Jun Chen; Cong Liao; Wei-Dong He

doi:10.1007/s10118-022-2752-y

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Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels

RESEARCH ARTICLE | Updated：2022-09-23

- Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels
- Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels
- Chinese Journal of Polymer Science 2022年40卷第10期页码：1141-1153
- Affiliations：
  
  CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  wdhe@ustc.edu.cn
- Funds：
  
  The authors are grateful for the financial support provided by the National Natural Science Foundation of China (Nos. 20934005 and 21274136) and Prof. Si Wu for the convenience of contat angle test.;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-022-2752-y.
- DOI：10.1007/s10118-022-2752-y
  中图分类号：
- 收稿：2022-01-25，
  
  修回：2022-3-28，
  
  录用：2022-4-2，
  
  网络首发：2022-06-24，
  
  纸质出版：2022-10-01
- Accepted：
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Guo, X. X.; Hou, S. C.; Chen, J.; Liao, C.; He, W. D. Transpiration-prompted photocatalytic degradation of dye pollutant with AuNPs/PANI based cryogels. Chinese J. Polym. Sci. 2022, 40, 1141–1153

Xiao-Xiao Guo, Shi-Chang Hou, Jun Chen, et al. Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels[J]. Chinese Journal of Polymer Science, 2022, 40(10): 1141-1153.
Guo, X. X.; Hou, S. C.; Chen, J.; Liao, C.; He, W. D. Transpiration-prompted photocatalytic degradation of dye pollutant with AuNPs/PANI based cryogels. Chinese J. Polym. Sci. 2022, 40, 1141–1153 DOI： 10.1007/s10118-022-2752-y.

Xiao-Xiao Guo, Shi-Chang Hou, Jun Chen, et al. Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels[J]. Chinese Journal of Polymer Science, 2022, 40(10): 1141-1153. DOI： 10.1007/s10118-022-2752-y.

摘要

Hybrid cryogels composed of PAAm-

-PANI embedded with AuNPs enjoy the synergetic contributions to both photothermal transpiration and photo-catalyst from PANI and AuNPs

to facilitate the photocatalytic degradation of dye pollutant prompted by photothermal transpiration.

Abstract

Incautious discharge of organic dyes such as methyl orange (MO) has produced serious pollution to the environment

calling for the efficient techniques to remove them with retaining the green world. The photo-catalytic degradation of organic dyes is promising among the developed techniques. Thus

a strategy based on transpiration-prompted photocatalytic degradation of dye pollutant under sunlight is put forward. Aniline (ANI) is graft-polymerized onto poly(acrylamide-

-4-aminophenylacrylamide) (PAAm) cryogel embedded with gold nanoparticles (AuNPs

diameter: 4−10 nm). The obtained cryogels integrated with AuNPs and PANI inside PAAm matrix (AuNP@PAAm-

-PANI) have been structurally explored based on the chemical composition and the phase/porous morphology. SEM and TEM observation shows that PANI and AuNPs are uniformly distributed in PAAm matrix. Since the macro-porosity of cryogel

hydrophilicity of PAAm and photo-thermal activity of PANI

PAAm-

-PANI cryogels without AuNPs can have a photo-thermal evaporation rate of water at 1.63 kg·m

−2

·h

−1

. As a comparison

AuNP@PAAm-

-PANI cryogels with AuNPs exhibit higher one at 2.20 kg·m

−2

·h

−1

suggesting the promotion of AuNPs to photo-thermal evaporation. Meanwhile

PANI appreciatively assists AuNPs to display higher catalytic ability for the oxidative degradation of MO. Therefore

the removal of MO from water is obviously prompted by the water transpiration under sunlight with AuNP@PAAm-

-PANI cryogels

whose rate constant can reach to 0.320 h

−1

being three folds of that for the sole absorption of MO. This transpiration-prompted photocatalytic degradation provides a fascinating route to eliminate organic pollutants and obtain pure water from wastewater simultaneously with sustainable sunlight energy.

关键词

Keywords

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