CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xinjian Dai,Hao Guan,Xin Wang,Mingyue Wu,Pan Jiang,Yubo Chai,Xiaoqing Wang
Solar-driven interfacial evaporation technology provides a facile and promising strategy for producing clean water from seawater. Wood-based evaporators have recently been extensively explored for solar desalination due to the structural merits and sustainability of natural wood. However, the light absorption and water evaporation functions are commonly integrated at the same surface for a traditional wood-based solar evaporator, which definitely causes mutual interference between the incident sunlight and the generated vapor leading to inevitable energy loss. Herein, inspired by the unidirectional transpiration of hypostomatic apple leaves, a bilayered Janus wood evaporator with decoupled light absorption and water evaporation surfaces was subtly engineered to avoid the sunlight-vapor interference for efficient solar evaporation. The bilayered evaporator consists of a longitudinal wood piece as the water transport layer and a carbonized transverse wood piece infiltrated with polydimethylsiloxane (PDMS) as the photothermal layer. The hydrophilic longitudinal piece with vertically aligned channels can continuously wick water to the evaporation surface, while the hydrophobic transverse piece with horizontal channels enables efficient heat transfer given its high thermal conductivity. Thanks to the unique bilayered configuration, the developed evaporator demonstrates an excellent evaporation rate of 2.12 kg m −2 h −1 with an evaporation efficiency of 92.3 % (1 sun), surpassing most of the traditional wood-based evaporators. Moreover, the bilayered evaporator exhibits good salt resistance and can effectively purify diverse wastewaters including organic dye solutions and oil–water emulsions. This Janus-interface structural design provides a novel strategy for developing high-performance solar evaporator toward clean water production.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Chenghua Zhang,Yunfei Yan,Kaiming Shen,Zongguo Xue,Yonghong Wu,Zhongqing Yang,Yanqiong Bao
Water scarcity and waste plastics elimination are long-term problems facing sustainable development, and solar interface evaporation to produce clean water is regarded as a promising water treatment technology. Herein, we report on low-cost waste plastic bottles synthetic carbon-based photothermal materials. By KOH activation and perforation, the surface crack structure of porous carbon is formed to facilitate multi-stage reflection of solar light, and significantly improve the solar light absorbance and photothermal conversion ability. Three-dimensional solar evaporators with low thermal conductivity and super hydrophilic wood sponge are fabricated, and the rectangular hole is designed to regulate water movement and prevent heat dissipation. When exposed to 1 sun illumination (1 kW/m 2 ), an evaporation rate of 1.59 kg·m- 2 ·h- 1 is achieved, along with an energy conversion efficiency of 88.49 %. In addition, different micro-surface rough structures are constructed to boost the solar light absorption, thereby enhancing the photothermal conversion ability, among which the micro-cone structure increased the evaporation rate to 1.93 kg·m −2 ·h −1 , demonstrating excellent stability over 15 cycles. In the simulated sewage purification process, the removal rate of pollutants is 99.9 %, and the evaporator without obvious salt accumulation in the seawater for 24 h, showing good salt resistance and self-cleaning ability. This research has important reference value for high-value preparation of carbon-based photothermal materials from waste plastics, extraction of clean water and environmental sustainable protection.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2019
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IF 6.97
Ying Xu,Jiaxiang Ma,Yu Han,Jingjing Zhang,Fuyi Cui,Ying Zhao,Xin Li,Wei Wang
Pure water production by solar distillation under no light concentration is attracting ever greater attention in the rural area with electricity limit due to its constant energy input. Meanwhile, the polluted raw water in these areas also lacks effective decontamination treatment. Rather than relying on external steps for decontamination process, photothermal materials with pollutant removal ability would have better water cleaning performance. Here, we designed a multifunctional photothermal material based on a copper mesh with abundant CuO nanowires. This CuO nanowire mesh exhibited a high solar absorption of 93% and superhydrophilicity for water transport, contributing to a high solar vapor efficiency of 84.4% under one-sun illumination. Besides, the CuO nanowires possessed a great catalytic ability for the degradation of contaminants in raw water. Moreover, the diffusion inhibition test showed a clear antimicrobial effect of the CuO nanowire mesh on the bacteria. Hence, the as-prepared multifunctional CuO nanowire mesh allows for the incorporation of solar evaporation, pollutant degradation, and antibacterial action, which holds great application potential in the pure water production in solar distillation.
研究领域:
材料科学
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环境科学
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光热转换
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xiaonan Wu,Yang Guo,Dailin Yang,Yanfu Wu,Wenyu Xiang,Juan Wang
Solar-driven interfacial evaporation offers a promising sustainable approach to clean water production, leveraging its low carbon footprint and adaptability to diverse environments. Despite advancements in enhancing solar vapor generation rates, inefficient condensation heat dissipation remains a major limitation, reducing overall water collection efficiency. Here, we present a synergistic evaporative cooling and radiative cooling (SECRC) strategy that significantly boosts solar-driven clean water production by effectively dissipating condensation heat. Using a titanium dioxide nanocrystal-coated delignified wood substrate (DW-TiO 2 NC) as the SECRC platform, we achieved a 2.5-fold increase in heat dissipation flux and enhanced vapor diffusion towards the condensation interface. This innovation improved water production efficiency from 0.50 to 0.80. Furthermore, the TiO 2 coating provided exceptional environmental anti-fouling capabilities, maintaining a stable outdoor water collection rate with only ∼9 % reduction after one month of exposure, compared to an 18 % decline in uncoated systems. This all-passive, single-solar-powered SECRC system delivers an efficient, stable, and practical solution to address global clean water challenges, marking a transformative advancement in solar water purification technology.
研究领域:
材料科学
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环境科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Jincui Gu,Tianyu Chen,Peng Xiao,Feng Ni,Luke Yan,Yujing Nie,Tao Chen
Producing affordable freshwater becomes increasingly essential. Membrane separation technology offers an unprecedented opportunity, but they typically use fuel energy during the separation process. Therefore, it is a severe challenge to construct an advanced membrane for energy-free water purification. Herein, for the first time, we reported a heterogeneous membrane for pressure-free water purification. Oxidized carbon spheres (OCS) membrane was optimized by the coordinated modification of polydopamine (PDA) and tetrakis(hydroxymethyl)phosphonium chloride (THPC). Remarkably, the OCS@PDA membrane was progressively hydroxylated due to the THPC’s superb water-binding ability. Therefore, the OCS@PDA/THPC membrane demonstrated higher surface free energy and better hydrophilic capacity than the other membranes. Under the combined effect of abundant porous geometry and strong charge interaction, this membrane presented a splendid screening performance for various dye molecules without extra pressure. In addition, its separation throughput can be improved by regulating the external temperature. This work may offer a straightforward manner to handle the relationship between membrane structure and performance for pressure-free water purification.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Yuzhe Cao,Zhijun Zhou,Tongyu Zhang,Zejuan Ni,Bo Ge,Xin Shao,Guina Ren,Zhaozhu Zhang
It is crucial for relieving the shortage of clean water in inland to construct an economical photothermal interfacial evaporator with a function of solving the enrichment of dyes during clean water production. Herein, a photothermal interfacial evaporator satisfying the above acquirement is constructed, in which BiOBr with oxygen vacancies (BiOBr-OVs) serves as photothermal material, which lays a foundation for preparation of a photothermal interfacial evaporator with an ability of avoiding dyes aggregation during clean water production. Furthermore, the raw materials except photothermal material and sodium alginate coating of the evaporator are from daily life, which reduces its cost. Importantly, the evaporation rate of the evaporator under one sun illumination is 4.2 times that of pure water (0.39 kg·m −2 ·h −1 ). Meanwhile, it also exhibits a purification efficiency of 99.9 % for Rh B solution. Noteworthily, Rh B in bulk water is photodegraded by the evaporator during steam generation under one sun illumination and its photodegradation efficiency is 99.9 %, indicating that the evaporator is capable of preventing dye aggregation during water evaporation. Besides, the evaporator has desalination performance, in which its steam generation rates in 3.5 wt% and 10 wt% NaCl solution are attenuated only by 1.23 % and 3.07 %, respectively, compared with that of in pure water. Meanwhile, the removal efficiency of the evaporator for K + , Na + and Mg 2+ in simulated seawater is 99.98 %.
研究领域:
环境科学
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材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
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2024
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IF 8.3
Yi Lu,Zongze Li,Jiawei Liang,Xueling Xu,Guangyao Zhang,Huihua Min
The rapid expansion of industrial activities and urbanization has exacerbated environmental and water pollution. Solar water evaporation is a promising technique for water purification. Herein, an innovative dual-functional hydrogel that combines photothermal conversion with photocatalytic degradation was successfully prepared. The composited hydrogel (MF/CNTs-1) achieves a high-water evaporation rate of 2.23 kg·m −2 ·h −1 under 1 sun irradiation. Furthermore, two-dimensional MgFe nanosheets synthesized via alkali etching of vermiculite can generate highly reactive radicals through photo-Fenton reaction, facilitating efficient pollutants degradation. This dual-functional evaporator harnesses solar energy to enhance both water purification and pollutant degradation, providing valuable insights into designing vermiculite-derived materials for comprehensive water treatment and sustainable water purification.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2023
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IF 5
Jia Xu,Zhaomin Chen,Jiwei Jiang,Bo Song,Hui Zhang,Bin Dong
Freshwater crisis is a global problem and seeking more sources of fresh water is the key to solving this problem. Solar water purification and fog collection are two separate ways to obtain fresh water. However, neither of these methods could operate 24/7 when used alone. Herein, we report a hydrogel membrane that can achieve both solar water purification and fog collection, thus enabling all-day freshwater collection. The hydrogel membrane with microstructured patterns inspired by the structure on the back of the Namib Desert beetle consists of poly(vinyl alcohol) (PVA), chlorine-reinforced polypyrrole (PPy-Cl), and silicon dioxide nanoparticles (SiO2NPs), which is capable of harvesting up to 25 L of fresh water per square meter per day under the outdoor conditions. The excellent freshwater collection capacity is realized based on the synergetic interaction among the hydrophilicity of PVA, the photothermal conversion capacity of PPy-Cl, and the biomimetic microstructures. Furthermore, due to the improved mechanical properties brought by SiO2NPs, the hydrogel-based evaporator reported in the current study has better water resistance as well as mechanical properties, which allows it to be used outdoors for long periods of time and facilitates its practical application.
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
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2021
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IF 9.229
Jiefeng Pan,Xiaohong Yu,Jiajing Dong,Lei Zhao,Lingling Liu,Jialin Liu,Xueting Zhao,Lifen Liu
Interfacial solar-driven evaporation provides one of the most promising green and sustainable technologies to deal with the knotty water crisis by extracting vapor from a variety of water sources powered by solar energy. Advanced photothermal materials play critical roles in interfacial solar-driven evaporation by photothermal conversion and heat localization. Herein, inspired by the unique hierarchical structure and light-harvesting function of diatoms, we propose a novel photothermal material with a diatom-like hierarchical nanostructure derived from TiO2-PANi-decorated bilayer melamine foam (TiO2-PANi@MF) for solar-driven clean water generation. The diatom-like hierarchical nanostructured TiO2-PANi@MF can realize full-spectrum light absorption and photothermal conversion by enhancing multiple light reflection and light scattering. Thanks to the diatom-like hierarchical nanostructure, TiO2-PANi@MF not only impressively achieves an evaporation rate of 2.12 kg m–2 h–1 under 1 sun irradiation but also shows a high solar steam conversion efficiency up to 88.9%. Notably, the TiO2-PANi composite also endows TiO2-PANi@MF with photocatalytic degradation capability. Apart from the excellent steam generation capability, optimized TiO2-PANi@MF also provides the high photocatalytic efficiency of dye degradation and maintains a high evaporation rate of more than 2 kg m–2 h–1. We believe that the proposed photothermal material with a diatom-like hierarchical nanostructure can envision promising practical applications in seawater desalination and sewage purification.
研究领域:
材料科学
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环境科学
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纳米技术
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Jilei Wei,Cui Du,Ping Li,Xin Zhou,Chen Zhou,Shengyang Yang
Freshwater scarcity is threatening the health and life of people. As a portable water purification route, solar-driven water evaporation has attracted great attention. Although diverse light absorber materials were achieved for interfacial water evaporation, it is still desired to design robust and high-efficient photothermal materials. Herein, we employed a molecular assembly method to accomplish a PVA/PEDOT: PSS composite hydrogel (PPPH) into a carbonized melamine foam (CF) for the fabrication of PPPH-CF membrane, which is flexible, stretchable, and reusable for solar water evaporation. The water evaporation rate can reach 2.06 kg m −2 h −1 with an amazing photothermal conversion efficiency of 96.9% under one sun. The as-prepared PPPH-CF membrane was also utilized for water purification, which exhibits an outstanding rejection ratio of salts, heavy metals, dyes, and bacteria. This facile, low-cost, and high-efficient water purification procedure can be envisioned for the large-scale and one-step water treatment with renewable solar energy, meeting people’s freshwater demands.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Peilei Zhou,Wenhua Fan,Yue Sun,Yu Zhao,Feng Sun,Jia Xu
Addressing the imperative of global water scarcity, the innovative field of interfacial solar steam generation (ISSG) offers a significant advancement. Despite the common hurdles of salt deposition and water-thermal management that can diminish the performance and longevity of evaporation systems, this research introduces a breakthrough with a three-dimensional (3D) conical evaporator. Developed through the refinement of geometry and microstructure, and validated by COMSOL assisted modeling, this evaporator not only features an efficient water transport system and a distinctive crystallization pattern at the edges but also excels in high-concentration seawater environments, achieving an evaporation rate of 1.92 kg m -2 h −1 in seawater with a salinity of 20 wt%, which is comparable to the rate observed in pure water. By fine-tuning the immersion depth, the evaporator optimizes interfacial heating, leading to an extraordinary evaporation efficiency of 121 % under one sun. This design adeptly meets the stringent desalination criteria for high-salinity waters and exemplifies a novel strategy for enhancing solar evaporation efficiency by effectively harnessing ambient energy sources.
研究领域:
材料科学
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环境科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Nano
·
2024
·
IF 5.8
Jiaying Wang,Yuxia Xu,Yang Guo,Juan Wang
Solar-driven interfacial evaporation (SIE) is a promising avenue for clean water production, but its widespread application is hindered by challenges such as surface water contamination and the corrosive nature of oily wastewater. In this study, we introduce a novel approach to mitigate these issues by developing a cotton fabric coated with carbon black nanoparticles and calcium alginate hydrogel (CCCF). This coating imparts the fabric with remarkable properties, including strong light absorption, superhydrophilicity, and underwater superoleophobicity. These characteristics enable the CCCF-based evaporator to achieve an impressive water evaporation rate of 1.44 kg m−2 h−1 under one sun, even in the presence of various oil contaminants. Furthermore, the CCCF exhibits outstanding reusability and stability under harsh environmental conditions, including exposure to acidic, alkaline, and saline environments, as well as elevated temperature. These findings highlight the potential of CCCF as a practical and scalable solution for fabricating SIE systems with enhanced efficiency and durability. Our research represents a significant step forward in the development of sustainable water production technologies for diverse environmental conditions.
研究领域:
材料科学
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环境科学
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可持续能源
✓ 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）