CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Chenglong Qin,Tingting Ren,Chengxiang Gui,Peng Liu,Qingjiao Wei,Wenjing Liu,Zuwei Zhou,Yaning Huang,Kun Fan,Lu Huang
Solar-driven photocatalytic hydrogen production is considered to be a reliable, simple and effective technology for producing green hydrogen. However, a large amount of solar energy absorbed by the photocatalyst material is not utilized but directly dissipated into the atmosphere in the form of waste heat. Meanwhile, the dependence of photocatalytic hydrogen production system on the water supply chain also limits its promotion in water-scarce and arid areas. Herein, a solar-driven hydrogen and water co-generation (SHWC) device based on atmospheric water harvesting (AWH) technology is proposed. The integrated device consists of a water self-supply layer (WSL) and a photocatalytic layer (PL) for simultaneous hydrogen production and freshwater harvesting from the atmosphere. Under one sun illumination (1000 W m −2 ), the AWH-SHWC device obtains an average hydrogen production rate of 25.98 mmol m -2 h −1 with 81.78 g m -2 h −1 of condensate water. In the natural sunlight, 118.21 mmol m −2 day −1 of hydrogen production and 230 g m −2 day −1 of condensate water are obtained. At night, the WSL can achieve regeneration by adsorbing atmosphere water. This integrated device may offer a creative approach to addressing freshwater resource scarcity and the fossil energy crisis.
研究领域:
能源科学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2021
·
IF 10.041
Yue Hu,Zhou Fang,Xu Ma,Xinyi Wan,Shilin Wang,Shuaikang Fan,Zhizhen Ye,Xinsheng Peng
Harvesting water from atmosphere is emerging as a potential strategy to solve the problem of water scarcity. In this work, CaCl 2 encapsulated Fe-ferrocene MOFs hollow microspheres (CaCl 2 @Fe-Fc-HCPs) were successfully fabricated. CaCl 2 plays as water sorbent and Fe-Fc-HCPs act as photothermal components for rapidly water release. In CaCl 2 @Fe-Fc-HCPs composites, the dissolving CaCl 2 in the adsorbed water are effectively prevented, while the water adsorption capacity of the encapsulated CaCl 2 is improved. The amount of water adsorbed by CaCl 2 @Fe-Fc-HCPs (80% RH, 15 °C) is 2.685 g H2O /g CaCl2 , 2.23 times as that adsorbed by pristine CaCl 2 powder. Furthermore, the hollow structure Fe-Fc-HCPs MOFs favorable for loading CaCl 2 nanoparticles and facilitating mass transport. The adsorbed water can be easily released by a simulated solar light (one sun) due to the high efficient photothermal property of Fe-Fc-HCPs. The performance shows no degradation after 5 cycles, indicating its nice stability. This may provide a promising and cost-effective way to harvest water from air only powered by natural sunlight and offer new insights to combine photothermal MOFs with traditional adsorbents to design high-efficiency water generators.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Rui Feng,Chen Xu,Fei Song,Fang Wang,Xiu-Li Wang,Yu-Zhong Wang
Inspired by Nepenthes pitcher plants, slippery liquid-infused porous surfaces (SLIPS) have recently attracted increasing attention for directional transport and movement manipulation of water droplets. Nevertheless, infused lubricants are generally instable and easy to deviate from such surfaces during applications, resulting in the lost control on the fog capture and motion of droplets as well as serious risk of water safety. Here, a highly stable SLIPS with improved lubricant storage is developed through the structure design of synergistically constructing regular micro-pincushion and nanoparticles. Notably, on the basis of the microstructure, the presence of nano-architecture shows great contribution to obviously increased capillary force as well as suppressed lubricant loss during water collection. Featuring the stable surface-slippery property, the biomimetic SLIPS displays well maintained dropwise coalescence of water from fog and efficient water harvesting performance. The water collection efficiency is as high as 852 mg cm–2 h–1 and is stable within continuous 20 h application. This fundamental illustration of structural synergism can be further applied to construct more new water manipulation and harvesting platforms with stably slippery surfaces/interfaces.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 8
·期 20
·2100691
·
IF 6.147
Pei Lyu,Xiangyi Zhang,Mengyuan Peng,Bin Shang,Xin Liu
It is highly desirable to endow surfaces with both exceptional droplet nucleation and removal capacities for water harvesting, but which still remains great challenges. Inspired by the water collection features of desert beetles and Nepenthes pitcher, this paper presents a facile and simple strategy to fabricate a wettable patterned slippery surface (WPSS). Different from desert beetles-inspired water harvesting materials which the (super) hydrophilic bumps are constructed on a (super) hydrophobic background, the patterned hydrophilic CuO bumps in this study are surrounded by the silicone oil layer. Owing to the patterned hydrophilic bumps and slippery interface, as well as the flexibility in manipulating the relative ratio between them, the innovated WPSS is capable of rapidly nucleating and removing water droplets. It outperforms conventional liquid-repellent surfaces in water harvesting performance.
研究领域:
材料科学
·
仿生学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Jianhui Li,Yi Wang,Yang Chen,Qizhao Xiong,Jiangfeng Yang,Libo Li,Jinping Li
Harvesting water from the atmosphere is an important process to solve the extreme lack of water resources in arid regions. Adsorption-based atmospheric water harvesting (AWH) takes advantage of solar thermal energy to harvest water from air. This technique is particularly suitable for arid regions characterized by low humidity and an abundance of sunshine. Nonetheless, under low humidity conditions, AWH is highly dependent on water-adsorbing materials exhibiting excellent performance. In this work, a metal–organic framework (MOF), namely [Zn 2 (bpy)(btec)(H 2 O) 2 ]·2H 2 O, also denoted as MWH-1, was investigated for application in water harvesting under low humidity conditions (<20%). Notably, MWH-1 displayed outstanding water and thermal stability. At temperatures of 293–333 K and low pressure, activated MWH-1a exhibited competitive water uptake (relative humidity (RH) = 5%, uptake>200 cm 3 ·cm −3 ; RH = 10%, uptake>250 cm 3 ·cm −3 ). This ensured effective water harvesting at high temperatures during the day. In situ powder X-ray diffraction and Fourier-transform infrared analyses confirmed the sensitive water adsorption process of MWH-1a. The X-ray single-crystal study further demonstrated that single-crystal structures could be completely restored following water harvesting. MWH-1 showed good structural stability and enabled water harvesting under low humidity and high temperature conditions. Thus, it has the potential for application in round-the-clock water harvesting in extremely arid regions.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Tong Lyu,Zhaoyang Wang,Ruonan Liu,Kun Chen,He Liu,Ye Tian
Simple, low-cost, and high-performance atmospheric water harvesting (AWH) still remains challenging in the context of global water shortage. Here, we present a simple and low-cost macroporous hydrogel for high-performance AWH to address this challenge. We employed an innovative strategy of pore foaming and vacuum drying to rationally fabricate a macroporous hydrogel. The hydrogel is endowed with a macroporous structure and a high specific surface area, enabling sufficient contact of the inner sorbent with outside air and high-performance AWH. The experiments demonstrate that macroporous hydrogels can achieve high-performance AWH with a broad range of sorption humidity [relative humidity (RH) from 100% to even lower than 20%], high water sorption capacity (highest 433.72% of hydrogel’s own weight at ∼98% RH, 25 °C within 60 h), rapid vapor capturing (the sorption efficiency is as high as 0.32 g g–1 h–1 in the first 3 h at 90% RH, 25 °C), unique durability, low desorption temperature (∼50 °C, lowest), and high water-releasing rate (release 99.38% of the sorbed water under 500 W m–2 light for 6 h). The results show that this macroporous hydrogel can sorb water more than 193.46% of its own weight overnight (13 h) at a RH of ∼90%, 25 °C and release as high as 99.38% of the sorbed water via the photothermal effect. It is estimated that the daily water yield can reach up to approximately 2.56 kg kg–1 day–1 in real outdoor conditions, enabling daily minimum water consumption of an adult. Our simple, affordable, and easy-to-scale-up macroporous hydrogel can not only unleash the unlimited possibilities for large-scale and high-performance AWH but also offer promising opportunities for functional materials, soft matter, flexible electronics, tissue engineering, and biomedical applications.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiyan Li,Guoyu Xing,Min Qiao,Silu Du,Tao Zhou,Shuo Gao,Hanxue Sun,Rui Jiao,An Li
Solar-driven atmospheric water harvesting (SAWH) has been recognized as a promising strategy to alleviate the freshwater crisis. Herein, we developed an efficient porous polymeric foam, LiCl@CCP-PPy, which has low preparation cost, strong adaptability and portability, and is very suitable for use as a wicking material in SAWH systems. LiCl@CCP-PPy contains abundant –NH 2 and –OH groups. These hydrophilic groups and excellent pore structure (porosity is 80.22 %) make it have a good moisture absorption effect even in low humidity environment. The moisture absorption capacity can reach 2.86 g/g at 35 % RH and 25 °C, and 4.48 g/g at 25 °C and 90 % RH. The saturated water absorption effect was 27.48 g/g. LiCl@CCP-PPy can be scaled up for production. In addition, LiCl@CCP-PPy has a high light absorption rate of more than 90 %, and the strong photothermal conversion ability of Polypyrene (PPy) enables the material to warm up rapidly under natural light, thereby accelerating the desorption process (96 % desorption rate at 1 kW/m 2 for 3 h). Based on the above properties, LiCl@CCP-PPy was applied to the Tengger desert in northwest China. The final water production efficiency was 0.64 L/m 2 /d, and the collected water quality met the international drinking water standard.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Liyue Zhang,Jingkai Liu,Xiaoling Liu,Xinbei Zhu,Jinyue Dai,Xiaoqing Liu,Xiaosu Yi
The importance of clean water resources for human health and economic development cannot be overlooked. Providing a way for fully passive all-day freshwater harvesting presents a significant challenge. Herein, we propose a strategy for all-day freshwater harvesting passively through a freestanding Janus film which combining solar-driven interfacial desalination during day time and dew water generation driven by passive radiative cooling at night. Specifically, the core of the strategy was a new bio-based benzoxazine which containing high-infrared emittance in the atmospheric window and the resultant cured black freestanding film owns a steady high light absorbance in the whole range of the solar irradiation wavelength. The home-made device made by the Janus film achieved a drinkable freshwater collection efficiency of 90.9 % when desalinating seawater under 1 sun illumination and achieved a dew water collection rate of 68.36 g m −2 day −1 at night. Moreover, the film has an excellent antibacterial effect, which ensures the quality of water collection and enhances the service life. Combining the advantages of bio-based raw materials, a simple fabrication process and scalability of the film, the all-day freshwater collection system makes a promising solution to alleviate freshwater shortage in many arid regions, islands and even boats sailing on the sea.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2020
·
IF 3.557
Xuelian Gou,Zhiguang Guo
How to prepare multifunctional surfaces with high nucleation density and fast droplet removal during droplet condensation remains a challenge. It is believed that a water droplet on a superhydrophobic surface (SHS) in the Cassie state is inclined to convert to the Wenzel state under high-pressure or high-humidity conditions, which results in the pinning effect. Hence, it is necessary to form thermodynamically stable lubricant-infused surfaces (LISs) to be applied in water condensation, especially under extreme working conditions. In this work, CuO LISs with two different morphologies (chrysanthemum-like and dandelion-like structures) in the slippery state were prepared and the effect of surface morphology on water harvesting behavior was investigated. The results indicated that dandelion-like CuO consisting of nanoneedles exhibited inferior water harvesting behavior compared to chrysanthemum-like CuO consisting of nanolamellas due to worse lubricating oil loss. Furthermore, the strong intermolecular forces between the perfluoropolyether (PFPE) lubricating oil and perfluorodecanethiol (PFDT)-modified coating resulted in a durable lubricating layer, which exhibited favorable anti-icing, anticorrosion, and liquid repellency even under strong acid and alkali conditions, high shear force rate up to 7000 rpm, and long-time ultraviolet light irradiation for 12 h. This work paves the path for efficient droplet nucleation and removal, which has potential in water harvesting in arid regions and water condensation for power generation.
研究领域:
材料科学
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 35
·23930-23939
·
IF 10.7
Jing Zhao,Chuang Liu,Zijin Cheng,Ruoyu Sun,Yixian Hu,Jiliang Mo
Here, we have employed a simple and efficient immersion method to create a superhydrophobic coating on a stainless-steel substrate. Subsequently, we use laser equipment to process hydrophilic conical holes in specific areas of the superhydrophobic stainless steel surface, constructing a hydrophilic-superhydrophobic hybrid surface for water collection. By optimizing the combination of hydrophilic holes of different sizes and introducing continuous hydrophilic diversion grooves, we have maximized the water collection efficiency of the hybrid surface. The study reveals that introducing small holes in the upper-row can accelerate the water collection frequency and increase the water collection amount of the combination-hole hybrid surface. The droplet collection frequency and transport speed are superior to those of a single-hole hybrid surface. However, when the collected droplets reach the edge of the sample, there is a common phenomenon where larger droplets hang on the edge of the hydrophilic pattern without falling, significantly reducing the water collection efficiency of the hybrid surface. The introduction of continuous hydrophilic diversion grooves can act as drainage, effectively solving the “pinning” phenomenon of droplets at the edge of the sample, further enhancing the water collection efficiency of the hybrid surface to 2326.5 mg cm−2 h−1, approximately 1.58 times higher than before the introduction. This unique surface design, combining discrete hydrophilic holes and continuous hydrophilic diversion grooves, provides a new approach for water collection on hybrid surfaces. Its superior water collection capability also offers a potential solution to the problem of freshwater scarcity.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
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
Advanced Fiber Materials
·
2025
·
IF 21.3
Lu Yi,Li Zongze,Zhang Guangyao,Zhang Hao,Fan Deqi,Zhao Ming,Zhu Han,Yang Xiaofei
Water and energy scarcity present significant global challenges in arid and remote regions, therefore, it is imperative to develop a sustainable approach that harnesses atmospheric moisture and sunlight to generate both water and energy. A portable system was presented, which directly harvests water from atmospheric moisture and generates energy using cellulose aerogels–high-entropy perovskite La(Cr 0.2 Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 )O 3 –lithium chloride (CA–LB5O3–LiCl). The system captures water from moist air during the night and facilitates solar-driven water evaporation and electrocatalytic water splitting during the day. The CA integrated with LiCl achieves efficient moisture absorption even in arid conditions due to its combined hydrophilic structure and entrapped water. The high-entropy perovskite LB5O3 promotes the lattice oxygen mechanism by weakening the metal–oxygen bond, resulting in an overpotential of 290 mV at 10 mA·cm −2 . Furthermore, its excellent solar absorption and photothermal conversion enhance water uptake to 1.01 g·g −1 at 60% relative humidity (RH) as well as increase water evaporation rates to 2.1 kg·h −1 ·m –2 . This process simultaneously generates O 2 and H 2 from moist airflow, providing both clean water and green fuel. This flexible and sustainable system offers a new pathway for producing water and energy in resource-scarce environments with potential applications in arid and remote regions. Graphical
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 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）