Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1021/acsami.4c05041 |
| Biomimetic Aerogel Composite for Atmospheric Water Harvesting | |
| Fu, Changhui; Zhan, Danyan; Tian, Guangyi; Yu, Anhui; Yao, Li; Guo, Zhiguang | |
| 通讯作者 | Yao, L ; Guo, ZG |
| 来源期刊 | ACS APPLIED MATERIALS & INTERFACES
 |
| ISSN | 1944-8244 |
| EISSN | 1944-8252 |
| 出版年 | 2024 |
| 英文摘要 | Adsorption-based atmospheric water harvesting (AWH) with solar-driven photothermal desorption has become an effective means of solving freshwater scarcity in arid regions due to its low energy consumption and high efficiency. Moisture adsorption and desorption capacities are the most critical properties in AWH, and it is a challenge to improve the rate of moisture adsorption and desorption of composite adsorbents. Therefore, this paper reports a SA/carboxymethyl chitosan (CCS)/C/CaCl2-U composite aerogel adsorbents with simultaneously green, low-cost, degradable, and fast hygroscopicity and desorption kinetics. The composite adsorbent used water-soluble biomass materials sodium alginate (SA) and carboxymethyl chitosan (CCS) as the backbone of the aerogel, constructed a vertically aligned unidirectional pore structure by directional freezing, and introduced nanocarbon powder and moisture-absorbent salt calcium chloride (CaCl2) to improve the solar photothermal performance and water absorption, respectively. The results showed that the composite adsorbent had good water uptake capacity at 30-90% relative humidity (RH), the time to reach the water uptake of 1 g g(-1) at 90% RH was only 2.5 h, and the final water uptake rate was up to 1.9 g g(-1) within 12 h. Meanwhile, the composite sorbent can be heated and desorbed basically within 1 h at 80 degrees C and its evaporation efficiency is 1.3 times higher than that of the aerogel sorbent prepared by the conventional method when irradiated with 1000 W m(-2) light intensity for 2 h. Therefore, the SA/CCS/C/CaCl2-U composite aerogel adsorbent of this study has a potential that can be applied in AWH due to its environmental friendliness, low cost, and faster hygroscopic desorption kinetics. |
| 英文关键词 | atmospheric water harvesting biomass aerogeladsorbents directional freezing low cost and highefficiency |
| 类型 | Article ; Early Access |
| 语种 | 英语 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:001255900000001 |
| WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/402582 |
| 推荐引用方式 GB/T 7714 | Fu, Changhui,Zhan, Danyan,Tian, Guangyi,et al. Biomimetic Aerogel Composite for Atmospheric Water Harvesting[J],2024. |
| APA | Fu, Changhui,Zhan, Danyan,Tian, Guangyi,Yu, Anhui,Yao, Li,&Guo, Zhiguang.(2024).Biomimetic Aerogel Composite for Atmospheric Water Harvesting.ACS APPLIED MATERIALS & INTERFACES. |
| MLA | Fu, Changhui,et al."Biomimetic Aerogel Composite for Atmospheric Water Harvesting".ACS APPLIED MATERIALS & INTERFACES (2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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