ACS Nano
·
2024
·
IF 15.8
Chenyang Cai,Yi Chen,Fulin Cheng,Zechang Wei,Wenbin Zhou,Yu Fu
Harvesting atmospheric water and converting it into electricity play vital roles in advancing next-generation energy conversion systems. However, the current water harvester systems suffer from a weak water capture ability and poor recyclability due to high diffusion barriers and low sorption kinetics, which significantly limit their practical application. Herein, we drew inspiration from the natural “Pump effect” observed in wood and successfully developed a dual “absorption–adsorption” networked MXene aerogel atmospheric water harvester (MAWH) through ice templating and confining LiCl processes, thereby serving multiple purposes of clean water production, passive dehumidification, and power generation. The MAWH benefits from the dual H-bond network of MXene and cellulose nanocrystals (absorption network) and the hygroscopic properties of lithium chloride (adsorption network). Furthermore, its aligned wood-like channel structure efficiently eliminates water nucleation near the 3D network, resulting in fast moisture absorption. The developed MAWH demonstrates a high moisture absorption ability of 3.12 g g–1 at 90% relative humidity (RH), featuring rapid vapor transport rates and durable cyclic performance. When compared with commercial desiccants such as the 4A molecular sieve and silica gel, the MAWH can reduce the RH from 80% to 20% within just 6 h. Most notably, our integrated MAWH-based water harvesting–power generation system achieves a high voltage of ∼0.12 V at 77% RH, showcasing its potential for practical application. These developed MAWHs are considered as high-performance atmospheric water harvesters in the water collection and power generation field.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 33
·17589-17600
·
IF 8.867
Ze-Qing Guo,Nan-Xi Miao,Jian-Ping Zhou,Yu-Xi Lei,Qadeer Ul Hassan,Mei-Mei Zhou
A multifunctional material, Na2Fe2Ti6O16 (NFTO), was synthesized via a simple hydrothermal method for the first time. NFTO nanosheets with a long hexagonal plate shape enjoy double absorption, high magnetic moment and strong adsorption. The magnetic property allows for the convenient collection of the NFTO adsorbent from aqueous solution during recycling and double absorption in the visible-light region could be applied in visible-light harvesting. The double absorption and magnetic property originate from the d–d transitions of Fe3+, due to the effect of the crystal field. The adsorption process was evaluated by a methylene blue removal experiment and was found to have good agreement with the pseudo-second-order kinetics model and Langmuir isotherm. The NFTO nanosheets exhibit excellent recyclability, a high kinetic adsorption rate and a maximum adsorption capacity of 165.8 mg g−1 at equilibrium pH. These results are greatly significant for multifunctional NFTO as a promising adsorbent material used in water purification.
研究领域:
材料科学
·
环境科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER SCIENCE SERIES B
·
2017
·Vol. 59
·期 3
·292-299
·
IF 0.621
Wang Chunyu,Bu Yuhuan,Zhao Letian
Water and oil dual-absorption materials for application in oil well cement for self-healing micro creaks has been synthesized through bicontinuous microemulsion polymerization. Bicontinuous structure of microemulsion was used to implement the performance of absorbing both water and oil. Phase behavior of the microemulsion system was analyzed by “ε–β fish-shape phase diagram” from which middle phase line was obtained to provide the formula of polymerization. The product was characterized using scanning electron microscope (SEM), pore size distribution (BET), water/oil absorption rate test and water/oil absorption speed test. SEM analysis showed that neither water absorption component nor oil absorption component formed separated particles, while they formed continuous component respectively. Due to the bicontinuous structure and pores, the materials have fast water and oil absorption rate.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wei Zhao,Lurui Wan,Zhiyong Xu,Xuefei Li,Yang Lan,Wenbo Zhao,Jing Chen
The viscosity and absorption capacity are important factors in evaluate the performance of SO 2 absorbent, but it is not an easy task to balance the contradiction between them. Herein, we designed and synthesized a novel aminosiloxane (3-diethylaminomethyl-1,1,3,3-tetramethyl-disiloxyalkyl methyl)-diethylamine (DTDA) with double absorption sites. This absorbent has low viscosity before and after absorption, with 3.41 mPa·s and 180.00 mPa·s at 303.15 K, respectively. The absorption capacities of DTDA can reach 3.42 mol/mol (303.15 K, 1.00 atm) and 1.71 mol/mol (303.15 K, 0.02 atm). The desorption of SO 2 can be realized at 363.15 K with good cyclic absorption performance. Moreover, with the introduction of dimethyl silicone oil (DSO), a mixed absorption system (DTDA-DSO) with liquid-liquid phase-change behaviors was obtained. The mixed absorption system not only shows better thermal stability but also needs lower thermal desorption energy consumption. The excellent absorption performance of DTDA-DSO system makes them have great potential in the field of SO 2 capture and could provide strong support for their industrial application.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 9
·3063-3071
·
IF 5.7
Haoyang Li,Hua Tang,Junsheng Yu,Jiang Cheng,Lu Li
Silver antimony sulfide (AgSbS2) is used as an absorption layer in thin film solar cells due to its suitable bandgap and economic considerations. Efforts have been made to improve the photovoltaic performance of devices, but it is difficult to increase the short circuit current (JSC) and open circuit voltage (VOC) simultaneously. We have designed a double-absorber solar cell based on AgSb(S,Se)2, whose structure is glass/ITO/CdS/AgIn0.5Sb(S,Se)2.75/AgSb1.25(S,Se)2.375/Au. Ultrasonic spray pyrolysis was used to prepare the films, and a selenization process was conducted to construct a gradient band structure. The two stacked absorbers have a total thickness of 1700 nm. The best performance obtained had a VOC of 0.396 V, a JSC of 17.04 mA cm−2, a fill factor (FF) of 52.78%, and an efficiency of 3.57%. The champion device had a double layer design with an 850 nm thickness of AgIn0.5Sb(S,Se)2.75 and an 850 nm thickness of AgSb1.25(S,Se)2.375 stacked from bottom to top. A high JSC, which was attributed to AgIn0.5Sb(S,Se)2.75, was achieved, and the VOC was almost maintained at the same level as that of AgSb1.25(S,Se)2.375. This strategy may provide a new approach to unravel the contradiction between high JSC and high VOC, which could be utilized in other solar cells.
研究领域:
材料科学
·
可再生能源
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）