4.7 Article

Mesoporous SiO2 decorated superhydrophobic fabric evaporator with selective oil removal and Rh B photodegradation performance

Journal

MICROPOROUS AND MESOPOROUS MATERIALS
Volume 345, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.micromeso.2022.112237

Keywords

Superhydrophobic; Fabric; Mesoporous; Pollutant removal

Funding

  1. National Natural Science Foundation of China
  2. [51901099and 62105135]

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Solar steam generation devices assembled based on interfacial heating technology can remove oily and water-soluble pollutants and produce clean water. Superhydrophobic fabric is used to selectively adsorb oily pollutants, and photodegradation is utilized to remove soluble pollutants remaining in water after treatment.
Solar steam generation devices assembled based on interfacial heating technology show the ability to produce clean water, while it faces challenges in the sewage environments. The superhydrophobic fabric was used to selectively adsorb surface oily pollutants based on its non-wettability. Soluble pollutants remaining in water after evaporator treatment can be further removed through photodegradation. Herein, the device composed of superhydmphobic C3N4/Bi2MoO6 heterojunction, water supply layer and CuO photothermal layer was assembled to remove oily and water-soluble pollutants and produce clean water. The contact angle of water on the superhydmphobic C3N4/Bi2MoO6 surface reaches 154 degrees and shows the selective adsorption of cyclohexane. The prepared bulk catalyst C3N4/Bi2MoO6 not only indicate the stability of reuse, but also maintained the degradation efficiency of 98.7% under outdoor light conditions. Through the active species capture experiments, center dot O-2(-) was verified as the main active material in the photodegradation process. The formation of Type II hetemjunctions between C3N4 and Bi2MoO6 facilitated the separation of e(-)/h(+) at the C3N4/Bi2MoO6 interface.

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