ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Qian Yan,Renjie Ding,Pengyang Li,Haowen Zheng,Zhong Chen,Jinhua Xiong,Zonglin Liu,Xu Zhao,Fuhua Xue,Liangliang Xu,Huanxin Lian,Shanyi Du,Zhigong Tang,Qingyu Peng,Xiaodong He
Solar-energy thermal management, characterized by its environmental friendliness, cost-effectiveness, and efficiency, holds a promising future, which has brought about widespread interest in the evolution of solar-to-thermal materials with the desired properties. Nevertheless, in both hot and cold environments, challenges in developing functionally integrated hydrogels for sustainable thermal regulation still remain. In this study, a rationally, simply, and effectively designed structured Janus membrane, consisting of a Ti3C2Tx MXene/GO/alginate fibers nonwoven (GMF) layer and a P (NIPAM co-DMAA) (PAD) hydrogel layer. The GMF with excellent hydrophilicity forms an interpenetrating structure with the PAD hydrogel through strong hydrogen bonds and can be easily adapted to multishape and multifield applications. By adjusting the content of thermochromic PAD hydrogel monomers, an improvement in the critical transition temperature (37.7 °C) and a reduction in volume shrinkage has been achieved, and the full-spectrum intrinsic transmittance is 67.59%, which is of excellent practicability and cyclic stability. Under constant sunlight, the hydrogel’s phase transition decelerates the temperature increment in the photothermal layer, thereby establishing a stable equilibrium temperature in the environment. The equilibrium temperature of the photothermal layer can be adjusted between 32 and 36 °C to match a variety of climates by regulating the relative content of the Ti3C2Tx MXene and GO in the photothermal layer. Additionally, the existence of the thermochromic hydrogel in the Janus membrane prevents the indoor temperature from overheating. Furthermore, the membrane’s asymmetric structure enhances its ability to reduce heat dissipation, crucial for high-performance thermal management. Moreover, this novel structure can be used as a self-supporting agricultural film to maintain a stable temperature in the environment for efficient plant growth, demonstrating significant potential in new modern agriculture.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yangyang Peng,Zhenjie Ma,Bo Ge,Limin Zhao,Tonghui Zhang,Guina Ren,Zhaozhu Zhang
In response to the imperative needs for water environment purification and potable water provision, an optimized interface evaporator (IE) structure has been developed, which integrates a floating layer endowed with selective oil removal and photodegradation properties alongside a polydopamine sponge photothermal layer characterized by its hydrophilic channel. The primary innovation presented in this paper is the in situ superhydrophobic modification of the Bi 2 MoO 6 semiconductor photocatalyst (CA = 165.5°), which not only retains the photodegradation ability of visible light response, but also facilitates its applications within the fixing layer of the IE, thereby enabling effective oil adsorption. After 6 indoor and 2 outdoor photodegradation cycles, the photocatalytic capacity was maintained at 99.8 %. The IE exhibited a steam generation rate of 2.1 kg•m −2 •h −1 , with the ability to purify sewage containing dyes and metal ions. Notably, the porous architecture of the photothermal layer confers a superior salt suppression property, highlighting its potential for applications in seawater desalination.
研究领域:
材料科学
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环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Zheng Tan,Xiangcai Ge,Guochang Wen,Bo Ge,Guina Ren
Given the problems in sewage treatment and clean water production, this study developed a solar steam generating device. Such a developed device comprised a superhydrophobic photocatalytic layer and a polypyrrole photothermal layer. To be specific, the superhydrophobic photocatalysts were capable of selectively adsorbing surface organic solvents and photodegrading dissolved pollutants, while the polypyrrole photothermal layer had a function of absorbing light energy and forming an interfacial heating layer to avoid heat loss. To improve the photodegradation ability, the photocatalyst of Bi 2 MoO 6 was added, and its crystal structure and specific surface area were investigated specifically. The photocatalyst was supported on a fabric substrate to form a bulk material, thereby avoiding the defects of poor reuse of powder catalysts. After 8 cycles, the degradation efficiency remained higher than 98 %. In addition, the fabric exhibited an excellent mechanical stability, of which the average friction coefficient remains stable. Interestingly, after the sewage treatment, the fabric could act as the substrate of photothermal devices to ensure floating. The steam production efficiency was improved by the synergistic effect of the polypyrrole photothermal layer and the fabric.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Jingtong Yu,De Sun,Bingbing Li,Dongmin Yue,Yanxia Ge,Rui Xu,Hao Liang,Xiaowei Song,Dafeng Zhai
Current scientific advances in wastewater treatment have slowed the pressure on water access. Membrane distillation (MD) was a promising technology for wastewater treatment. However, for the treatment of the spraying wastewater containing high boiling point organic solutions, high energy dependence and membrane wetting by the water-soluble organics with high concentrations were the limitations of the MD process. Herein, Janus photothermal membranes (JPTM) were prepared by chemical plating and then surface oxidation under alkaline conditions. The flower-like CuO hydrophilic photothermal layer which acted as the light trap and anti-wetting armor was constructed on the PVDF hydrophobic membrane surface. In the process of photothermal membrane distillation, when the CuO hydrophilic photothermal layer contacted with feed solution, due to the arrangement of the hydrophilic hydroxyl heads of the organics on the hydrophilic photothermal layer, and the hydrophobic alkyl tails faced the water molecules and repelled them. The light was trapped in the hydrophilic photothermal layer and repeatedly refracted by the flower-like CuO. The flower-like CuO was further optimized by controlling alkali concentration. When the alkali concentration was 2.5 M, the photothermal conversion of JPTM with the moonflower-like CuO hydrophilic photothermal layer was up to 92.86%. When single component high boiling point organic solutions (BCS or DB) were treated by MD, under 1 sun irradiation (1 kW m −2 ), the permeate fluxes achieved 2.68 and 2.91 kg m −2 h −1 with over 98% removal of organics; Further, for the treating of spraying wastewater, it had a high permeate flux of 5.13 kg m −2 h −1 , a photothermal efficiency of 90.79%, and a removal rate of 62%. The JPTM was a low-carbon technology to improve heat and mass transfer for wastewater treatment by photothermal membrane distillation.
研究领域:
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
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yanming Yang,Shiqi Song,Xiao Miao,Changqing Zhu,Guina Ren,Bo Ge
Interface evaporators are important in the production of clean water, but problems such as surface oil and soluble contamination remain. In this paper, the structure of an evaporator is optimized, and a superhydrophobic NH 2 -UIO-66/Bi 2 WO 6 floating layer replaces the conventional fix layers. Under the action of the polyaniline hydrogel photothermal layer, the evaporation rate is 2.46 kg•m −2 •h −1 . A mechanism analysis demonstrates that the constructed NH 2 -UIO-66/Bi 2 WO 6 is a Z-type heterojunction, and that •OH, •O 2 − and h + play key roles in the degradation process. The band gap width of Bi 2 WO 6 and NH 2 -UIO-66 is calculated to be 2.85 eV and 2.62 eV, respectively. The constructed polyaniline hydrogel photothermal layer has the ability of rapid water transport, where water droplets can spread quickly within 9 ms, and it gives the evaporator an excellent salt suppression ability. The polyaniline hydrogel did not destroy the polyurethane sponge skeleton with growth, which resulted in its mechanical stability. It is hoped that the construction of such evaporators would provide reference for environmental treatment and clean water production.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EcoMat
·
2023
·
IF 14.6
Jingjie Shen,Chenhui Yang,Yanli Ma,Mengnan Cao,Zifa Gao,Shuo Wang,Jian Li,Shouxin Liu,Zhijun Chen,Shujun Li
Photothermal devices and thermoelectric cells hold great promise for energy generation but integration of the two remains a considerable challenge in real-life power supply for sensors. Here, a novel photo-thermo-electric hydrogel (PTEH-Interlocking) was constructed by the synthesis of a photothermal layer on a thermoelectric hydrogel with the redox pair Fe(CN) 6 3− /Fe(CN) 6 4− . The smart design of using the oxidation of pyrogallic acid by Fe(CN) 6 3− to construct the photothermal layer for photo-to-heat conversion protected the redox couple of the thermogalvanic ion pair from ultraviolet damage, as well as triggered the formation of an interlocking structure at the interface of the photothermal layer and the thermoelectric hydrogel. The as-prepared PTEH-Interlocking has shown a high Seebeck coefficient and rapid heat transfer, boosting the photo-thermo-electric conversion. As a demonstration of a practical application, the PTEH-Interlocking cells are successfully used as the energy supply for a mechanical sensor.
研究领域:
材料科学
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能量转换
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纳米技术
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传感器
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 12
·7967-7976
·
IF 12.732
Bo Ge,Shaowang Tang,Hao Zhang,Wenzhi Li,Min Wang,Guina Ren,Zhaozhu Zhang
In this world, insufficient potable water resources and water pollution exist simultaneously. The photothermal device designed in this paper consists of three components: a superhydrophobic BiOBr photocatalyst layer (SH-Bi sponge), hydrophilic layer (cotton), and photothermal layer (CNTs/Co3O4). The SH-Bi sponge layer designed has two functions: (1) ensuring that the photothermal layer floats on the water surface; (2) removing the surface oil and photodegradation pollutants in sewage. h+ is identified as the main active species by studying the degradation mechanism. Meanwhile, the specific locations of the valence band (1.108 eV) and conduction band (−1.312 eV) of the BiOBr photocatalyst are determined. Local interface heating is realized through the synergistic effect between the hydrophilic layer and photothermal layer. The results demonstrate that the photothermal device has a high steam generation rate and vapour production rate for ordinary water quality and NaCl aqueous solution.
研究领域:
环境科学
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材料科学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Xuefei Zhang,Ting-Ting Li,Hai-Tao Ren,Hao-Kai Peng,Bing-Chiuan Shiu,Yanting Wang,Ching-Wen Lou,Jia-Horng Lin
To simply and effectively enhance the conversion capability of wearable thermoelectric textiles, a two-step in situ method is adopted to fabricate dual-shell photothermoelectric textiles which is made of polypropylene fibers with a photo-thermal layer (PPy) and a thermoelectric layer (PEDOT:Tos). The PPy is tailored to achieve high temperature and photothermoelectric effects. The PPy layer can significantly increase the photothermal conversion efficiencies of as-prepared fabric. The optimized photothermoelectric fabric can improve the generated voltage output from 294.13 to 536.47 μV under the infrared light, and its power density is up to 13.76 nW·m–2. A flexible photothermoelectric strip composed of as-prepared fabric coated with Ag particles and textile substrates with low thermal conductivity shows a voltage output of 2.25, 0.677, and 0.183 mV and a power output of 0.7031, 0.0636, and 0.0049 nW under IR light, sunlight, and on the arm, respectively. The photothermoelectric fabrics display potential as to a new smart wearable device for converting light and electricity.
研究领域:
材料科学
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能源材料
·
纳米技术
·
纺织工程
·
可穿戴技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yubo Liu,Yang Wu,Yizhe Liu,Rongnian Xu,Shujuan Liu,Feng Zhou
Preventing ice formation and ice swift removal from the solid surface are essential in numerous application fields. Superhydrophobic coating is an effective way to delay the icing phenomenon. However, the superhydrophobic coating was wetted easily after icing–deicing cycles that led to the failure of anti-icing. In this study, a robust, amphiphobic coating consisted of fluorinated multiwalled carbon nanotubes (FMWCNTs) and commercial polyurethane was constructed by a simply spray process. Because of the addition of FMWCNTs, the coating demonstrated a good amphiphobic feature and highly efficient photothermal conversion, which endowed the coating surface with excellent deicing and defrosting characteristics under sunlight irradiation. In addition, self-cleaning and self-healing properties of the coating under sunlight ensured its efficient photothermal conversion and long service life. To further improve the photothermal deicing effect, a coating system containing a photothermal layer (P), thermal-conductive layer (C), and thermal-protective layer (P) was constructed. The heat generating from the photothermal layer can transfer the whole coating surface by the conductive layer, but with limited transmission to substrate materials by a thermal-protective layer. The coating system can still deice and defrost rapidly on the whole surface and only a small portion of photothermal coating was irradiated under extremely low temperature. The outdoor experiment has confirmed that the coating melted and removed snow rapidly in a winter environment. The multifunctional photothermal deicing coating may have a wide application in outdoor surrounding.
研究领域:
材料科学
·
表面工程
·
涂层技术
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Fan Luo,Xianghui Liang,Weicheng Chen,Shuangfeng Wang,Xuenong Gao,Zhengguo Zhang,Yutang Fang
MOF-based atmospheric water harvesting technology is a straightforward and practical strategy for producing safe drinking water . However, separate designs of high-adsorption desiccant skeletons and efficient photothermal layers are required to maximize water production efficiency. This work presents an integrated design of a multifunctional monolithic adsorbent through the layer-by-layer assembly of chitosan/polydopamine layers and hybridized MOF backbones on a glass fiber support. The hydrophilic hybridized MOF consisting of MIL-160(Al) and MOF-303 obtains the higher specific surface area (917.59 m 2 /g) and pore volume (0.44 cm 3 /g) through morphological reorganization for facilitating water capture and storage capacity. Especially in arid environments (RH ≤ 30 %), the resultant MOF has a superior moisture adsorption capacity (0.44 g/g) than parental MOF and other potential MOFs. The polymeric photothermal layer of adsorbent enables high solar thermal conversion in sunlight to assist the release of collected water. With fast sorption–desorption kinetics, an impressive outdoor water production of 0.94 g/g per day is observed in the designed monolithic adsorbent, indicating its enormous potential for safe, sustainable and scalable atmospheric water collection technology.
研究领域:
材料科学
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环境科学
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化学工程
·
水资源管理
✓ 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）