INDUSTRIAL CROPS AND PRODUCTS
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2025
·
IF 6.2
Tingjie Chen,Yuhan Tang,Gang Zhao,Zhaoxing Lin,Lihong Xu,Zhenzeng Wu,Xiangfang Peng
As environmental pollution intensifies, particularly due to the severe ecological threats posed by crude oil spills, there is an urgent need to develop hydrophobic/oleophilic porous absorbents with self-heating capabilities. These absorbents can reduce crude oil viscosity through in-situ heat transfer, thereby accelerating the remediation process. Herein, A novel multifunctional and compressible sponge (m-PFS@PPy@Fe₃O₄) is developed by self-assembling PPy, Fe₃O₄ nanoparticles, and polydimethylsiloxane onto the plant fiber sponge. The m-PFS@PPy@Fe₃O₄ exhibits high hydrophobicity and excellent compressibility, making it highly effective in separating oil-water mixtures with a high oil absorption capacity (24.7 ∼ 53.5 g/g). Due to the synergistic effect of photothermal and magnetic-thermal properties, the surface temperature can rapidly rise from 28.0°C to 96.9°C under 1 sun irradiation and 54.2°C under a specific magnetic field. This heat generation, effective in all weather conditions, overcomes limitations related to both weather and energy. The generated heat is transferred to the oil, significantly reducing its viscosity and speeding up the oil absorption process. More importantly, the sponge can be connected to a vacuum pump-assisted absorption device, enabling continuous recovery of crude oil from the water surface under sun irradiation or magnetic field, demonstrating great potential for highly efficient remediation of viscous oil spills.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuan Chang,Xiaojuan Niu,Zhengjun Bi,Haorong Li,Wenpeng Hong,Haoran Li
Solar-driven synergistic freshwater and electricity production presents a promising solution to address global water-energy challenges. However, existing systems suffer from limited condensation surface area and long vapor transport paths, which easily lead to vapor accumulation at the evaporation interface and consequently a decrease in evaporation rate. This study develops an integrated thermoelectric-interface evaporation system featuring vapor gradient regulation through enhanced condensation. It lies in a hierarchical condensation architecture with arrayed structures that triple the effective surface area, creating abundant nucleation sites for accelerated vapor phase transition. This structural design effectively reduces the interface vapor saturation and maintains high evaporation flux through dynamic vapor pressure regulation. Under 1 sun irradiation, the system achieves concurrent water production (0.48 kg m −2 h −1 ) and electricity generation (168.15 mV open-circuit voltage). With optical concentration via a Fresnel lens, these performance metrics are further elevated to 0.72 kg m −2 h −1 and 280 mV. Importantly, the device operates stably with various feedwaters, and its practical value is demonstrated by continuously powering mobile communication equipment. This condensation-mediated vapor regulation strategy establishes a new paradigm for high-efficiency synergetic water-electricity generation, particularly for decentralized applications in resource-limited regions.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Huahui Liang,Mingwei Cai,Fuhui Liang,Shiyang Zhang,Yonggang Min
Carbon molecular sieve membranes (CMSMs) face a fundamental permeability-selectivity trade-off, as defined by the Robeson upper bound. Here, we engineer CMSMs via copolymerization of hydroxy-functionalized polyimide (6FDA-6FAP) with polydimethylsiloxane (PDMS). Incorporating flexible siloxane chains promotes denser chain aggregation and provides additional gas transport channels. During pyrolysis, the decomposition of siloxane segments generates additional micropores, thereby enhancing gas permeability. Simultaneously, PDMS-induced silicon inter-layer crosslinking promotes tighter packing of carbon strands, which reduces inter-layer spacing and consequently improves gas selectivity. Systematic comparison of hydroxyl (-OH) and amine (-NH 2 ) functional groups reveals that –OH groups in PDMS form extensive hydrogen-bonding networks with 6FAP, inducing crosslinking that enhances precursor chain packing. The optimized PCMS-OH membrane achieves H 2 and CO 2 permeability of 10,568 and 1,768 Barrer, with H 2 /CH 4 and CO 2 /CH 4 selectivity of 320 and 53, respectively, which far exceed the latest Robeson upper bound. Moreover, silicon-induced crosslinking reduces aging kinetics, retaining 57 % higher H 2 permeability after 60 days. This work demonstrates a precursor engineering strategy to break the trade-off barrier for sustainable hydrogen purification and carbon dioxide capture.
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Sustainability
·
2025
·Vol. 17
·期 15
·6987
·
IF 3.3
Songling Chen,Fuxin Liu,Wenying Zhao,Jianrong Zhao,Xinlin Li,Jianfei Wang
Environmentally friendly coated urea prepared using a waterborne polymer coating material is essential for promoting green and sustainable practices in modern agriculture. However, significant efforts are still urgently needed to address the undesirable properties of waterborne polymer coatings, i.e., poor hydrophobic properties and numerous micropores. Herein, dual nano-SiO2and siloxane-modified waterborne-polymer-coated urea was successfully developed. The characteristics of waterborne-polymer-coated urea before and after modification were compared. The results demonstrate that nano-SiO2and siloxane modification improved the hydrophobicity (water absorption decreased from 119.86% to 46.35%) and mechanical strength (tensile strength increased from 21.09 to 31.29 MPa, and the elongation at break exhibited an increase of 22.42%) of the waterborne polymer coatings. Furthermore, the –OH number of the modified coatings was decreased, while the coating surface formed a nano-scale rough structure, prolonging the nitrogen (N)-controlled release period from 7 to 28 days. Overall, the proposed novel dual-modification technique utilizing waterborne polymer coatings highlights the significant potential of eco-friendly coated urea with renewable coatings in modern agriculture.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xinyu Cao,Xu Guo,Tianyuan Xiao,Wenchao Jia,Xiaodi Liu,Changgeng Li,He Zhang,Pedram Fatehi,Haiqiang Shi
Aerogels are great adsorbents for oil decontamination due to their high porosity and specific surface area. However, the current oil-adsorbing materials for preparing such aerogels are expensive and environmentally unfriendly. This study successfully prepared three superhydrophbic biomass-based aerogels (SBAs) using treating biomass in a green LiBr·3H 2 O system and hydrophobic modification with hexadecyltrimethoxysilane (HDTMS). The time and temperature of hydrophobic modification reaction and biomass components are optimized by orthogonal experiment and investigated by the response surface methodology to improve water contact angle (WCA). The prepared SBAs have low weight, specific surface area (85.12–136.64 m 2 /g), and hierarchical porous structure. The WCA of the SBAs was 157°±5°, exhibiting excellent superhydrophobicity of the SBAs. The high WCA is attributed to the successful grafting of Si in the forms of Si–O and C–Si onto the aerogel, as indicated by FTIR and XPS. Oil adsorption experiments have shown that SBAs had outstanding sorption capacity in the range of 8–37.8 g/g of oil/SBAs. Furthermore, the SBAs exhibited excellent reusability after ten cycles of use. These results demonstrate that the SBAs are practically viable and highly efficient biosorbents for treating oil spills and organic pollutants.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Guolong Li,Xi Wang,Di Zhang,Hiroshi Fu,Xiaoming Qian,Zhenxue Liu,Yaming Jiang,Songnan Zhang
Incorporating innovative technology into functional fabrics extends their utility and addresses the daily challenges posed by fabric icing. Identifying effective anti-icing/deicing strategy is essential to mitigate the associated inconveniences. In this study, polypyrrole (PPy), Fe 3 O 4 particles and polydimethylsiloxane (PDMS) are used as the raw materials to design an all-weather anti-icing and deicing functional fabric PDMS/Fe 3 O 4 /PPy@PET, presenting the photothermal/electrothermal and electromagnetic induction thermal functions. This functional fabric exhibits excellent hydrophobic performance with the contact angle of 152° and effectively delayed the droplet freezing for 181 s on a −10 ℃ cold table. The photothermal effect can reach an equilibrium temperature of 74.3 ℃ at 1 sunlight intensity and melt a 3 mm thick ice layer in 841 s. The electrothermal performance reaches to 72.2 ℃ at 10 V voltage and the ice layer is melted within 1436 s. The excellent electromagnetic induction thermal performance can reach to 71.4 ℃ in 5 min at 8 V voltage, and completely melt the ice layer in 444 s. In addition, the fabric offers excellent durability, abrasion resistance and UV resistance, allowing for long-term outdoor use. This opens up new ideas for the development of anti-icing and deicing functional fabric.
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JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2024
·Vol. 58
·期 8
·085203
·
IF 3.1
Min Li,Qi Liu,Haonan Tian,Jianqiao Ma,Jun Xie
According to the problem that the performance of film capacitors is limited due to the poor insulation of polypropylene (PP) film, a new nano-filler was studied and a PP composite dielectric was fabricated. The breakdown strength of composite dielectrics was measured and the mechanism for improving their insulation properties was analyzed. In this paper, TiO2 with high dielectric constant is plasma-treated and then coated with a layer of PP shell. TiO2 increases the dielectric constant of PP film composite dielectrics, and shell-like PP makes TiO2 more tightly bound to the PP matrix. Compared with pure PP, the breakdown voltage of TiO2–F is increased by 18.7%, and the breakdown voltage of TiO2–F@PP-mah is increased by 40.5%, and the new nano filler greatly improves the insulation performance of PP. The experimental results show that TiO2 introduces a low-density trap, TiO2–F introduces a high-density deep trap, and the modification of PP-mah slows down the dielectric constant conflict, increases the compatibility between the nanoparticles and the matrix, and increases the trap energy level. Based on the analysis of experimental results with different mass fractions, this paper proposes the optimal filling ratio of the new core-shell, which provides a new method for the composite dielectric to improve the insulation performance.
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LANGMUIR
·
2025
·
IF 3.9
Anhui Yu,Zhiguang Guo
Droplet manipulation on functional surfaces is an urgent problem to be solved. Fast and precise droplet manipulation plays an important role in many applications, such as microreactors and microfluidics. Although numerous techniques have been developed to manipulate droplets by injecting external stimuli, it remains a challenge to achieve high-precision, high-sensitivity, and fast droplet manipulation on smart, slippery response surfaces. Here, we report an intelligent slippery photopyroelectric response near-infrared-induced MXene-barium titanate/polyimide (SFMBPI) membrane. By using local near-infrared radiation (NIR), we can precisely control the droplet transport on the SFMBPI membrane, and SFMBPI uses electrospinning technology to better lock the dimethylsilicone oil, reducing the loss during the control process. Moreover, due to the presence of the pyroelectric layer, double external stimuli can be achieved. The thermal stimulation of the photothermal layer and the charge action of the pyroelectric layer make the manipulation of droplets on the SFMBPI surface more efficient and faster. Moreover, the experiment of negative gravity transport at an inclination angle of 6° demonstrates that the existence of the pyroelectric layer results in a greater driving force on the droplets, which can be more widely used. In addition, by inducing the direction of the NIR, programmable droplet transport and droplet merging can be achieved. Also, the SFMBPI membrane can be used for underwater bubble manipulation. This precise manipulation of droplets on the surface of SFMBPI membranes can be widely used in other fields, such as microfluidics.
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PubMed
高影响因子
OPTICS AND LASERS IN ENGINEERING
·
2024
·
IF 3.5
Shang Li,Zhihua Zeng,Xuan Su,Yingke Wang,Junyi Gu,Jie Xu,Bin Guo
Slippery surface, as the most cutting-edge function surface, has aroused the extensive attention ascribed to excellent hydrophobicity and self-cleaning property. Micro/nanostructure (functional carrier) and lubricant fluid (functional layer) collectively constitute slippery bi-phase surface. To our best knowledge, we firstly validate the preparation feasibility of lubricant-infused silicone rubber surface (LISRS) based on nanosecond laser splicing scan. Comprehensive characterizations demonstrate that laser splicing traces will break the uniformity of microstructures resulting in droplet pinning. However, the lubricant infusion can significantly endow the whole microstructure surfaces with droplet depinning effect, which directly improves the process compatibility of the laser splicing machining. The capillary infiltration and unstable loss of the lubricant on the microstructure surfaces not only confirm the stable lubricant layer of LISRS conformal with microstructures, but also reveal capillary stabilization mechanism of microgroove structures under gravity environment. Then, after being subjected to comprehensive stability tests (including mechanical abrasion, water droplet and jet impacts), the water droplet sliding behaviors of impacted surfaces show that the lubricant-infused microstructure surface has a certain degree of resistance to external impacts. These results show that it is extremely feasible to create large-scale LISRS using a laser splicing scan. With the rapid development of laser micro/nanofabrication, it is promising to break through the tough issue of large-scale and high-efficiency preparation of slippery silicone rubber surfaces, and bring slippery surfaces to the practical applications of anti-corrosion, anti-fouling and anti-icing materials or products.
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Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Huang Zhichao,Wang Lin,Wu Hongfu,Zhang Junfeng,Wang Zhuo,Sun Fu,Duan Huimin,Qi Dongming
Herein, a simple and efficient inorganic particle surface modification strategy was developed to improve the flame retardancy of flammable polyurethane (PU) materials while avoiding the serious degradation of their mechanical properties due to the incorporation of inorganic particles. Novel organic–inorganic hybrid hydroxylation ammonium polyphosphate (OHAPP) was fabricated via an ion-exchange reaction between APP and diethanolamine, and a PU/OHAPP film was prepared by crosslinking OHAPP with reactive PU via in situ polymerization. The curing properties, flame retardancy, and mechanical properties of materials were evaluated. Results showed that the addition of 15 wt% OHAPP in PU increased the tensile strength of the sample by 16% compared to PU alone. The peak heat release rate, total heat released, and total smoke produced from the materials measured via the conical calorimetric method were 337.2 kW/m 2 , 78.1 MJ/m 2 , and 8.9 m 2 , respectively, which were 63.8%, 43.6%, and 15.2% lower than those of PU. Additionally, the flame-retardant mode of action of the PU/OHAPP film was verified. This study is a useful reference for further studies on flame-retardant materials.
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NATURE
·
2025
·Vol. 647
·期 8091
·889-896
·
IF 48.5
Xue Yaoting,Cao Jiasheng,Feng Tao,Zhang Kaihang,Li Siyang,Hu Jiahao,Guo Haotian,Zhang Jinming,Song Yaoxian,Wang Zhuofan,Wang Lei,Huang Qishan,Zhou Haofei,Zhou Fanghao,Shen Jiliang,Fan Yaowei,Wang Zhe,Li Xinge,Wong Jie-Wei,Chen Zhiwei,Ruan Dongrui,Miao Zhikun,Zhang Bin,Zhou Enjie,Gan Letian,Wang Xuanqi,Cao Ertai,Chen Tong,Zou Weifeng,Zhang Junhui,Lu Haojian,Zhang Qinghai,Liu Song,Dong Huixu,Xiong Shiying,Peng Shuyou,Wong Tuck-Whye,Chen Yuanjie,Li Tiefeng,Chen Mingyu,Yang Xuxu,Yang Wei,Cai Xiujun
Mechanical transmission is essential in force-related activities ranging from the daily tying of shoe laces 1 to sophisticated surgical 2 and robotic operations 3 , 4 . Modern machines and robots typically use complex electronic devices designed to sense and limit force 5 , some of which still face challenges when operating space is limited (for example, in minimally invasive surgeries) 6 or when resources are scarce (for example, operations in remote areas without electricity). Here we describe an alternative slipknot-based mechanical transmission mechanism to control the intelligent operation of both human and robotic systems. Through topological design, slipknot tying and release can encode and deliver force with a consistency of 95.4% in repeating operations, which circumvents the need for additional sensors and controllers. When applied to surgical repair, this mechanism helped inexperienced surgeons to improve their knotting-force precision by 121%, enabling them to perform surgical knots as good as those of experienced surgeons. Moreover, blood supply and tissue healing after surgery were improved. The mechano-intelligence exhibited in slipknots may inspire investigations of knotted structures across multiple length scales. This slipknot-gauged mechanical transmission strategy can be widely deployed, opening up opportunities for resource-limited healthcare, science education and field exploration.
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高影响因子
POLYMER
·
2025
·
IF 4.5
Bo Zhu,Xu Sun,Yu Feng,Ji Liu,Xinyu Tao,Bo Yang
A microcapsule/XLPE composite material based on reversible Diels-Alder(DA) reaction was designed to solve the problem of electro-hydro hybrid tree aging in cross-linked polyethylene (XLPE) cables during long-term operation. Light-water dual-responsive microcapsules were prepared by in-situ polymerization using hyperbranched polysiloxane containing furan functional groups and linear polysiloxane containing furan and maleimide functional groups introduced by C C covalent bond as core materials and urea-formaldehyde resin as wall materials. A series of composites was prepared by regulating the doping concentration of microcapsules, and their insulation properties were tested. The effect of the doping content of microcapsules on the properties of materials was analyzed, and the multiple self-healing mechanism of microcapsule/XLPE composite was revealed. The results show that when the microcapsule doping concentration is 1 wt%, the composite material can self-heal while maintaining the intrinsic insulation performance of XLPE. Under the condition of thermal triggering, the dynamic reconstruction of the reversible bond enables the material to achieve dual repair of water tree and electrical tree damage, and maintains more than 80 % of the insulation performance after three times of damage-repair, which provides a new strategy for the intelligent design and life extension of high voltage cable insulation materials.
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危险品化学品经营许可证（带存储）