Multifunctional solar bamboo straw: Multiscale 3D membrane for self-sustained solar-thermal water desalination and purification and thermoelectric waste heat recovery and storage

Gong, Biyao; Yang, Huachao; Wu, Shenghao; Tian, Yikuan; Guo, Xin; Xu, Chenxuan; Kuang, Wenhao; Yan, Jun; Cen, Kefa; Bo, Zheng; Ostrikov, Kostya Ken

doi:10.1016/j.carbon.2020.09.033

Cited by 53 publications

(30 citation statements)

References 39 publications

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“…Biomass-derived solar-thermal materials such as carbonized mushrooms, wood, corn straw, carbonized loofah, carbonized bamboo, and other natural materials are used as typical configurations for solar evaporation systems. [20][21][22][23][24] Nonetheless, these strategies, while promising, suffer from inherent limitations that severely restrict their practical application. In particular, the corruption of these biomass materials, which seriously affect the stability of the device, is a crucial point.…”

Section: Introductionmentioning

confidence: 99%

Nature Sunflower Stalk Pith with Zwitterionic Hydrogel Coating for Highly Efficient and Sustainable Solar Evaporation

Hao

Sun

et al. 2021

Adv Funct Materials

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Solar-driven water evaporation is considered to be an appealing way to solve water scarcity issues globally. Various natural creatures possess unique structural features and exhibit an excellent pumping ability in arid environments. Motivated by sunflower stalk pith, here, the biomass porous foam modified with zwitterionic hydrogel coating for solar desalination devices is introduced. It is demonstrated that the multi-curvature and gradient honeycomb architecture offers a remarkable solar desalination system, which combines critical aspects of solar evaporation including high light absorption, localizing converted heat, rapid water transport, water activation, and multi-channel release of steam via its ubiquitous structure, and substantially outperforms other natural biomass materials. The device exhibits long-term stability in actual seawater, as well as high performance for soybean oil emulsion and oily brines (crude oil, salts). Furthermore, the long-term use of excellent storability to prevent putrefying is shown, which is attributed to the outstanding antifouling property of zwitterionic hydrogel. It is envisioned that the nature material with the advantage of being inexpensive, environmentally friendly, and portable, may be a new candidate for water purification and desalination.

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Section: Introductionmentioning

confidence: 99%

Nature Sunflower Stalk Pith with Zwitterionic Hydrogel Coating for Highly Efficient and Sustainable Solar Evaporation

Hao

Sun

et al. 2021

Adv Funct Materials

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“…[55] Copyright 2020, American Chemical Society. carbonization process of bamboo and corncob is done under N 2 protection at 450 C, [72,127] whereas the carbonization of the coconut husk is done using a regular household stove. [152] For effective solar absorber design, low temperature (300 C) and free-drying processes are used to transform flour into various forms.…”

Section: Carbonized and Carbon-coated Natural Porous Materialsmentioning

confidence: 99%

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

et al. 2022

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Food along with water, clothes, and shelter has long been considered as basic necessities for human life. [1] However, the reality is that people all around the globe continue to have difficulties in fulfilling their fundamental survival requirements. Rising population, unplanned urbanization, climate change, global energy, and natural resource crises are exacerbating these issues. Despite the fact that water covers more than three-quarters of the Earth's surface, providing fresh water as a fundamental requirement in certain drought-prone areas remains a problem. [2,3] Reducing the conflict between demand and availability for fresh water has become a significant problem in recent decades. According to World Health Organization (WHO), a shortage of freshwater resources may impact half of the world's population in the near future. [4,5] As a result, reliance on nontraditional sources, that is, purification of saltwater, sewage, and industrial effluents, must be increased to ease pressure on conventional water sources. [6][7][8] However, excessive levels of germs and hard particles in water from nontraditional sources may induce illnesses such as typhoid, jaundice, cholera, dysentery, and others. [9] Nevertheless, identifying alternative freshwater sources and implementing sustainable techniques for reusing and recycling water from unconventional sources may be a viable way to address the worldwide problem of freshwater shortage.Recent research on the generation of freshwater has revealed that methods such as reverse osmosis, electrodialysis, thermal desalination, and multiple-effect distillation need a high consumption of fossil fuels, a substantial initial investment, and the emission of polluting gas. [10][11][12] Thus, an interfacial solar-driven steam generation (ISSG)-based system is always recommended as a good candidate for seawater desalination, sterilizing, and wastewater treatment owing to its sustainability, cost-effectiveness, environmental friendliness, as well as ease of operation. In contrast to the natural water evaporation system, the ISSG-based system uses the heat localization method to heat only the portion of water which is associated with the airÀwater interface rather than the bulk water, substantially increasing the water evaporation rate. This technique utilizes the radiant heat from the sun with the assistance of photothermal energy conversion material, making it a promising sustainable solution to the water crisis. Furthermore, with proper design, heat loss can be minimized, allowing this technique to generate enough steam for water desalination, purification, and many other applications. [13][14][15][16][17][18][19] The selection of photothermal energy conversion materials for the ISSG mainly depends on the material's optical absorption spectra, photothermal conversion efficiency, sustainability, and duration of transmitting water to the heating surface (Figure 1). Researchers have investigated many naturally processed materials and nanoparticles (NPs) to design an efficient

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“…And in this process, it is possible to increase the voltage output and realize a mutually Although the current interface evaporation rate can reach a very high level, the yield of clean water collected is not so high. 33,[38][39][40][41] There are three reasons for explanation: (i) In traditional steam collection devices, water vapor generally condenses on the upper part of the device, which will cause the water droplets to adhere to the upper surface of the device. The water droplets condensed will increase the reflection of light; (ii) The increase of vapor pressure during steam generation in a closed system will reduce water evaporation; (iii) There may be incomplete condensation during the condensation process.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

“…32 Zheng's group use the biological material bamboo as an evaporator and use its waste heat to gather electricity, a 90.7 mV voltage can be achieved under one sun. 33 These researches on the storage of waste heat raises another important question: how to reasonably use the stored energy to the field of interfacial evaporation for sustainable development by realizing the reuse of waste heat.…”

Section: Introductionmentioning

confidence: 99%

Intensifying sustainable solar water production by steam heat internal circulation

Guo

Chen

et al. 2021

Mater. Adv.

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Multifunctional solar bamboo straw: Multiscale 3D membrane for self-sustained solar-thermal water desalination and purification and thermoelectric waste heat recovery and storage

Cited by 53 publications

References 39 publications

Nature Sunflower Stalk Pith with Zwitterionic Hydrogel Coating for Highly Efficient and Sustainable Solar Evaporation

Nature Sunflower Stalk Pith with Zwitterionic Hydrogel Coating for Highly Efficient and Sustainable Solar Evaporation

Natural Porous Materials for Interfacial Solar Steam Generation toward Clean Water Production

Intensifying sustainable solar water production by steam heat internal circulation

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