A Wave‐Driven Piezoelectric Solar Evaporator for Water Purification

Meng, Sen; Tang, Chunyan; Jia, Jin; Yang, Jie; Yang, Ming‐Bo; Yang, Wei

doi:10.1002/aenm.202200087

Cited by 36 publications

(21 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al [162] directly covered the thin flexible triboelectric nanogenerators (TENG) on the side wall of the cellulose aerogel evaporator (Figure 22E1), realizing the application development of water wave detection (Figure 22E2). Meng et al [163] realized allweather wave power generation using cellulose paper substrate covered with barium titanate (BaTiO 3 ) ultrathin nanofilm (BUF) (Figure 22F). The additional electric energy directly acted on the evaporation process, successfully completing the task of increasing the evaporation rate (the increase reached 20.3% at 1 solar radiation) by weakening the hydrogen bond of water molecules.…”

Section: Power Generationmentioning

confidence: 99%

Cellulose‐based Interfacial Solar Evaporators: Structural Regulation and Performance Manipulation

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

The shortage of freshwater resources has become a major obstacle threatening human development, and directly utilizing solar energy by solar evaporators is emerging as a promising method to produce freshwater from the seawater. Compared to many synthetic polymer‐based evaporators, cellulose‐based evaporators are expected to offer more interesting features benefiting from the renewable feature and abundant reserves of cellulose‐contained naturally occurring materials. First, according to the different fabrication methods, cellulose‐based solar evaporators can be divided into two types, i.e., top‐down utilization (wood‐based) and bottom‐up assembled (cellulose composite‐based), respectively. The different fabrication schemes also bring their own unique advantages, such as the bimodal porous structure of wood‐based evaporators and the artificial interconnection microporous network of cellulose composite‐based evaporators. Subsequently, this review further summarizes the most recent advances and highlights of those cellulose‐based solar evaporators, by focusing on their structural regulation strategies (e.g., drilled channel array, asymmetric wettability structure, delignification, 2D waterway, etc.) and evaporation performance improvements (e.g., salt resistance, high evaporation rate, etc.). Finally, the challenges in this field and potential solutions are also discussed, which are anticipated to provide new opportunities toward the future development of cellulose and other kinds of biomass‐based evaporators.

show abstract

Section: Power Generationmentioning

confidence: 99%

Cellulose‐based Interfacial Solar Evaporators: Structural Regulation and Performance Manipulation

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…These results demonstrate that the condensed water produced by the LC@LCG hydrogel totally satisfies the WHO drinking water standard. [42] Furthermore, LC@LCG exhibits a rejection of 100% for methylene blue (MB) dye in water (Figure 6f). [43] These results suggest that the LC@LCG g) The outdoor water evaporation experiment of LC@LCG.…”

Section: Long-term Stability Salt-resistant Ability and Seawater Desa...mentioning

confidence: 99%

Fully Lignocellulosic Biomass‐Based Double‐Layered Porous Hydrogel for Efficient Solar Steam Generation

Lin

Wang

Hong

et al. 2022

Adv Funct Materials

126

View full text Add to dashboard Cite

Solar-driven interfacial evaporation is an important approach for solving the issue of freshwater scarcity. However, the practical application of solar steam generation is hindered by high fabrication cost and environmental concerns regarding the petroleum-based materials. Herein, lignocellulose (celluloselignin composite) hydrogel (LCG) and lignin-derived carbon (LC) are used as the substrate and photothermal material, respectively, to construct a fully lignocellulose-based double-layered hydrogel (LC@LCG) evaporator. Results indicate that LC has an ultrahigh specific surface area and full-spectrum solar absorption of 98%. The presence of lignin can improve the hydrophilicity and maintain the capillary channels of the hydrogel, which tunes water into an intermediate state and reduces the vaporization enthalpy of water. Moreover, it ensures a high water transport rate in the hydrogel. Based on these advantages, the evaporation rate and photothermal conversion efficiency of hydrogel evaporator reach 1.84 kg m −2 h −1 under one sun and 86.5%, respectively. The lignocellulosic hydrogel evaporator could remove >99.95% of primary metal ions from seawater to generate fresh water, and shows outstanding salt resistance, durability, and long-term stability for desalination. This study demonstrates an eco-friendly and economic solution for continuous freshwater production from seawater using a fully lignocellulosic biomass-based hydrogel evaporator.

show abstract

“…The steam generation performance depends on the energy required during the phase change of water, i.e., equivalent evaporation enthalpy. In our previous work, [48] on the basis of different test analysis methods including qualitative analysis, quantitative calculation, and computer simulation, we have demonstrated that the piezoelectric materials can convert the mechanical energy in waves to electrical energy, effectively activating water to reduce the energy required for water evaporation. Similarly, a control experiment using a homemade device was conducted to estimate the actual vaporization enthalpy.…”

Section: Solar Steam Generation Of the Composite Film Evaporatormentioning

confidence: 99%

A Wave‐Driven Piezoelectrical Film for Interfacial Steam Generation: Beyond the Limitation of Hydrogel

et al. 2022

Self Cite

View full text Add to dashboard Cite

Solar interfacial vapor generation based on low evaporation energy requirements is an effective technology to speed up water purification under natural sunlight, offering great potential to alleviate the current global water crisis. The external electric field and hydrogel are two independent methods enabling low‐energy water evaporation. However, the complicated external equipment for generating an electric field and the restricted activation area of hydrogels significantly limit their practical application in steam generation. Thus, a piezoelectric fiber membrane is embedded into a highly hydratable light‐absorbing poly(vinyl alcohol) (PVA) hydrogel for synergistic water activation. The integrated evaporator is capable of continuously converting the wave energy reserved in the ocean into electrical energy, activating the water in the hydrogel. It is found that the activation effect leads to an improvement of over 23% compared to a non‐piezoelectric hydrogel evaporator. This work provides an evaporation prototype based on the synergistic water activation of wave‐triggered electricity and highly hydratable hydrogel.

show abstract

A Wave‐Driven Piezoelectric Solar Evaporator for Water Purification

Cited by 36 publications

References 58 publications

Cellulose‐based Interfacial Solar Evaporators: Structural Regulation and Performance Manipulation

Cellulose‐based Interfacial Solar Evaporators: Structural Regulation and Performance Manipulation

Fully Lignocellulosic Biomass‐Based Double‐Layered Porous Hydrogel for Efficient Solar Steam Generation

A Wave‐Driven Piezoelectrical Film for Interfacial Steam Generation: Beyond the Limitation of Hydrogel

Contact Info

Product

Resources

About