Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (10): 20220181.doi: 10.7503/cjcu20220181

• Polymer Chemistry • Previous Articles     Next Articles

Preparation of Silver-loaded Polyvinyl Alcohol Sponge and Its Interfacial Photothermal Driven Water Evaporation Performance

YANG Zhaohua, CHENG Hongjing, YANG Yi, LIU Hui, DU Feipeng, ZHANG Yunfei()   

  1. School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China
  • Received:2022-03-24 Online:2022-10-10 Published:2022-05-04
  • Contact: ZHANG Yunfei E-mail:zyf3006@126.com
  • Supported by:
    the National Natural Science Foundation of China(51803157);the Graduate Innovative Fund of Wuhan Institute of Technology, China(CX2021189)

Abstract:

The utilization of photothermal materials to evaporate water under solar energy is a critical green and environmental protection technology for addressing the scarcity of freshwater resources, but its popularity and application are limited by factors such as preparation cost, evaporation efficiency, and heat loss of photothermal materials. Here, silver nanoparticles loaded polyvinyl alcohol sponge(AgNPs/PVA) solar interface evaporator was prepared by one-pot method, and the effect of AgNPs content on the photothermal performance of AgNPs/PVA in solar-driven water evaporation was investigated. The synthesized AgNPs/PVA exhibited the optimum evaporation rate under 1 kW/m 2 sunlight intensity when the mass of AgNPs was 10% that of PVA, according to the results. Water may evaporate at a rate of 1.62 kg?m ?2?h ?1, which is 3.9 times that of pure water(0.42 kg?m ?2?h ?1). The prepared AgNPs/PVA showed potential application in the field of solar driven-water evaporation due to the simple preparation process, outstanding hydrophilicity and strong evaporation performance.

Key words: One-pot method, Silver-loaded polyvinyl alcohol sponge, Silver nanoparticles, Hydrophilicity, Interfacial photothermal driven water evaporation

CLC Number: 

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