Fe3O4/Diatomite-Decorated Cotton Evaporator for Continuous Solar Steam Generation and Water Treatment

Bai, Zhi; Xu, Haifeng; Yang, Bo; Yao, Jixin; Li, Guang; Guo, Kai; Wang, Nan; Liang, Nannan

doi:10.3390/ma15176110

Cited by 4 publications

(1 citation statement)

References 43 publications

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“…The absorption rates of Fe-Mo-1, Fe-Mo-2, Fe 3 O 4 , MoS 2 , and cotton at 200–2500 nm are approximately 97.11%, 96.19%, 94.6%, 89.71%, and 39.76%, respectively. The absorption rates of MoS 2 and Fe 3 O 4 were similar to those of the references [ 20 , 26 ]. As expected, both MoS 2 and Fe 3 O 4 showed high absorption.…”

Section: Resultssupporting

confidence: 85%

MoS2 Nanosheets Decorated with Fe3O4 Nanoparticles for Highly Efficient Solar Steam Generation and Water Treatment

Bai

Xu²,

et al. 2023

Molecules

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The shortage of water resources has always been one of the most difficult problems that perplexes humanity. Solar steam generation (SSG) has been a new non-polluting and low-cost water purification method in recent years. However, the high cost of traditional photothermal conversion materials and the low efficiency of photothermal conversion has restricted the large-scale application of SSG technology. In this work, composite materials with Fe3O4 nanospheres attached to MoS2 nanosheets were synthesized, which increased the absorbance and specific surface area of the composite materials, reduced the sunlight reflection, and increased the photothermal conversion efficiency. During the experiment, the composite material was evenly coated on cotton. The strong water absorption of cotton ensured that the water could be transported sufficiently to the surface for evaporation. Under one sun irradiation intensity, the evaporation rate of the sample synthesized in this work reached 1.42 kg m−2 h−1; the evaporation efficiency is 89.18%. In addition, the surface temperature of the sample can reach 41.6 °C, which has far exceeded most photothermal conversion materials. Furthermore, the use of this composite material as an SSG device for seawater desalination and sewage purification can remove more than 98% of salt ions in seawater, and the removal rate of heavy metal ions in sewage is close to 100%, with a good seawater desalination capacity and sewage purification capacity. This work provides a new idea for the application of composite materials in the field of seawater desalination and sewage purification.

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Section: Resultssupporting

confidence: 85%