Programmed design of selectively-functionalized wood aerogel: Affordable and mildew-resistant solar-driven evaporator

Meng, Taotao; Jiang, Bo; Li, Zhengtong; Xu, Xingtao; Li, Dagang; Henzie, Joel; Kumar, Nanjundan Ashok; Yamauchi, Yusuke; Bandô, Yoshio

doi:10.1016/j.nanoen.2021.106146

Cited by 98 publications

(43 citation statements)

References 57 publications

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“…Figure S4 shows the surface temperature of these six soils during evaporation, which is in good agreement with their water evaporation rates ( Figure 2 c). As can be seen in Figure 2 c, the water evaporation rates for rocky land, mollisols, aridisols, anthrosols, oxisols, and shifting sand are 1.2, 1.25, 1.35, 1.29, 1.34, and 1.23 kg·m −2 ·h −1 , respectively, are not very different from each other and are similar to typical 3D carbon-based materials in Figure 2 d [ 18 , 22 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ], indicating that the evaporation performance of soil as a photothermal material is fine. As shown in Figure 2 c, the induced voltage signals generated by ISUMs constructed from different soils show significant differences, which are not positively correlated with evaporation rates.…”

Section: Resultsmentioning

confidence: 62%

Solar-Driven Soil Remediation along with the Generation of Water Vapor and Electricity

et al. 2022

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As a renewable energy source, solar energy has become an important part of human energy use. However, facilities utilizing solar energy are often complex and technically difficult, and preparation equipment and materials are expensive, while these equipment and materials often cause new environmental pollution. Soil, which exists in large quantities on the earth’s surface, is an inexhaustible natural material with loose and stable properties. Due to the specificity of its composition and microscopic form, the soil has an inherent advantage as a medium for solar thermal and photovoltaic conversion. Here, we built an integrated solar energy utilization system, the Integrated Soil Utilization Module (ISUM), integrating multi-functions into one hybrid system, which enables solar-driven water vapor and electricity generation and soil remediation. The evaporation rate of the soil represented by the rocky land was 1.2 kg·m−2·h−1 under 1-sun irradiation with evaporation induced voltage of 0.3 V. With only seven days of continuous exposure to sunlight, the removal of heavy metal ions from the soil reached 90%, while the pH was raised to near neutral. The combined application of readily available natural soil with solar energy not only demonstrates the potential of a soil for solar desalination and power generation, but in addition, solar-driven interfacial evaporation provides an energy-efficient, environmentally friendly, and sustainable method for purifying heavy metal and acid-contaminated soil.

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Section: Resultsmentioning

confidence: 62%

Solar-Driven Soil Remediation along with the Generation of Water Vapor and Electricity

et al. 2022

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“…7). 54 The light absorption and thermal conductivity of this aerogel were 84.0% and 0.083 W m À1 K À1 , respectively. The large interconnected pores within the 3D structure of the wood-derived aerogel provided an excellent platform for rapid water transport and steam diffusion.…”

Section: Potential For Development Of Environmentally Friendly Materialsmentioning

confidence: 91%

“…In this review, we assessed the applicability and overall performance of several engineered aerogels in producing pure water using solar steam generation systems. , (d) 47 , (e) 48 , (f) 49 , (g) 50 , (h) 51 , (i) 52 , (j) 53 , (k) 54 , and (l) 55 .…”

Section: Advanced Characteristics Of Aerogels For Effective Freshwate...mentioning

confidence: 99%

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Aerogels in passive solar thermal desalination: a review

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“…Meng et al used delignification and thermal treatment for programmatically designing the microchannels of the wood‐derived aerogel. [ 139 ] The use of a wood component with a programmed thermal decomposition temperature enabled the development of a low‐cost, energy‐efficient wood‐based evaporator that retained all hydrophilic cellulose groups. In addition, inorganic nanomaterials and porous biomass composite have been used for the ISSG‐based steam generation systems.…”

Section: Fundamental Mechanism Of Photothermal Conversionmentioning

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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Programmed design of selectively-functionalized wood aerogel: Affordable and mildew-resistant solar-driven evaporator

Cited by 98 publications

References 57 publications

Solar-Driven Soil Remediation along with the Generation of Water Vapor and Electricity

Solar-Driven Soil Remediation along with the Generation of Water Vapor and Electricity

Aerogels in passive solar thermal desalination: a review

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

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