GO/Bi 2 S 3 Doped PVDF/TPU Nanofiber Membrane with Enhanced Photothermal Performance

Photothermal conversion materials have attracted wide attention due to their efficient utilization of light energy. In this study, a (GO)/Bi S -PVDF/TPU composite nanofiber membrane was systematically developed, comprising GO/Bi S nanoparticles (NPs) as a photothermal conversion component and PVDF/T...

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Published inInternational journal of molecular sciences Vol. 21; no. 12
Main Authors Yang, Wenxiu, Li, Yonggui, Feng, Long, Hou, Yimiao, Wang, Shuo, Yang, Bo, Hu, Xuemin, Zhang, Wei, Ramakrishna, Seeram
Format Journal Article
LanguageEnglish
Published Switzerland 13.06.2020
Subjects
Bismuth - chemistry
Graphite - chemistry
Light
Membranes, Artificial
Nanofibers - chemistry
Polyvinyls - chemistry
Sulfides - chemistry
photothermal conversion
solar distillation
nanofiber membrane
graphene oxide/bismuth sulfide
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Summary:Photothermal conversion materials have attracted wide attention due to their efficient utilization of light energy. In this study, a (GO)/Bi S -PVDF/TPU composite nanofiber membrane was systematically developed, comprising GO/Bi S nanoparticles (NPs) as a photothermal conversion component and PVDF/TPU composite nanofibers as the substrate. The GO/Bi S NPs were synthesized in a one-step way and the PVDF/TPU nanofibers were obtained from a uniformly mixed co-solution by electrospinning. GO nanoparticles with excellent solar harvesting endow the GO/Bi S -PVDF/TPU membrane with favorable photothermal conversion. In addition, the introduction of Bi S NPs further enhances the broadband absorption and photothermal conversion properties of the GO/Bi S -PVDF/TPU composite membrane due to its perfect broadband absorption performance and coordination with GO. Finally, the results show that the GO/Bi S -PVDF/TPU composite membrane has the highest light absorption rate (about 95%) in the wavelength range of 400-2500 nm. In the 300 s irradiation process, the temperature changes in the GO/Bi S -PVDF/TPU composite membrane were the most significant and rapid, and the equilibrium temperature of the same irradiation time was 81 °C. Due to the presence of TPU, the mechanical strength of the composite film was enhanced, which is beneficial for its operational performance. Besides this, the morphology, composition, and thermal property of the membranes were evaluated by corresponding test methods.
ISSN:1422-0067