COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Yulan Jian,Mengke Huang,Tianlu Xu,Shuai Chen,Hui Wan,Linkun Xie
The biomimetic construction of superhydrophobic coatings on wood surfaces significantly reduces the water absorption capacity of wood while enhancing its deformation resistance, thereby extending the service life of wooden structures. In this work, a fluorinated silica sol was prepared from alkaline silica sol and 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PFDMS), and evenly sprayed over the wood surface to effectively produce superhydrophobic/oleophobic wood specimens. The effect of the preparation procedure of fluorinated silica sol on the wettability of the coating was investigated. Acid and alkali corrosion tests were conducted to assess the chemical stability of the superhydrophobic coating, while sandpaper abrasion tests were used to evaluate its mechanical stability. The results showed that with a volume ratio of silica sol to PFDMS of 6:1 and a reaction period of 30 min, the modified wood exhibited excellent superhydrophobicity, with a water contact angle of 157.3° and an oil contact angle of 126.5°. Furthermore, the superhydrophobic coating demonstrated excellent mechanical and chemical durability, along with self-cleaning properties. These findings have significant practical implications for enhancing the performance and longevity of wood.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Shupei Liu,Chijia Wang,Kaka Li,Zihua Wang,Hongxin Luo,Weihao Fan,Huaiyuan Wang
Anti-scaling is a key challenge in various industrial productions. The use of coatings is the most effective strategy for protecting metal equipment. An excellent scale inhibitor is 1-hydroxy ethylidene-1, 1-diphosphate (etidronic acid) (HEDP), which is usually incorporated into wastewater and discharged directly with the water flow. In this study, HEDP was coated with poly-α-ethyl cyanoacrylate (PEC) by a simple spray method. The corresponding slow-release microcapsules, which we named PEC&HEDP, were successfully prepared. In addition, a correct mass of the microcapsules was added to the spray polyurea elastomer (SPUA) coating. The resulting SPUA/PEC&HEDP 70&30 composite coating exhibited excellent anti-corrosion and scale-inhibiting effects. Electrochemical impedance spectroscopy and salt spray corrosion test were used to assess the corrosion resistance of the coating. The results showed that the barrier performance of the composite coating improved significantly. In addition, the scale inhibition performance of the composite coating was tested in a supersaturated CaCO 3 solution. The results showed that the scale inhibition rate of the composite coating was higher by as much as 80.5% relative to the pure SPUA coating. This work provides a new and simple method for designing and preparing a slow-release microcapsule composite coating intended for scale control.
研究领域:
材料科学
·
腐蚀与防护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xinyang Li,Litao Tu,Wanyang Sun,Xiaohui Wang,Yichen Li,Guojin Liu,Liqin Chai,Yi Huang,Minghua Wu,Jianzhong Shao
Biomimetic structural coloration with photonic crystals (PCs) possesses the advantages of eco-friendly coloration, brilliant structural colors, and high colorfastness to light, etc. It is appealing for advanced coloration of various substrate surfaces. However, the fabrication of PCs with iridescent effect and high colorfastness on three-dimensional (3D) irregular substrate surfaces is still challenging. In this work, liquid photonic crystals (LPCs) with high mass fraction (40 wt.%) of colloidal nanospheres were used as the spraying solution to assemble long-range ordered PCs with iridescent effect. Thanks to the fluidity and dynamic reversibility, the pre-crystallized LPCs could disassemble under the applied spraying pressure, which promoted smooth spraying and enabled the formation of atomized micro-droplets. The colloidal nanospheres present in these micro-droplets were able to quickly reassemble and restore their pre-crystallized state. This allowed micro-droplets to connect with each other on the curved or 3D irregulated substrate surface into orderly assembled solid PCs upon the water evaporation, exhibiting brilliant structural colors with iridescent effect. Meanwhile, the use of the spraying solution with high mass fraction of colloidal nanospheres was shown to be effective against the slipping problem of the micro-droplets on 3D substrate surfaces, enabling the fabrication of PCs with pronounced iridescent structural colors on various 3D substrate surfaces (metal, ceramic, rubber, glass and so on). In addition, pre-spraying a specific polymer slurry to form a bearing layer on the 3D substrate prior to spraying the LPC allows improving the stability of the assembled PC structure under external forces (rubbing, washing, etc.), while retaining the refractive index contrast of PCs and thus achieving the consistency between their structural stability and color saturation.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 29
·17595-17602
·
IF 3.361
Shengquan Fu,Yueyue Xiao,Xinxin Yu,Tianxing Xiang,Fei Long,Junyan Xiao,Zhiliang Ku,Jie Zhong,Wei Li,Fuzhi Huang,Yong Peng,Yibing Cheng
The preparation of CsyFA1−yPbIxBr3−x-based perovskite by ultrasonic spraying has valuable application in the preparation of tandem solar cells on textured substrates due to its excellent stability and the advantages of large-area uniform preparation from the spraying technology. However, the bandgap of perovskite prepared by spraying method is difficult to adjust, and perovskites with a wide bandgap have the issue of phase instability. Here, we improved the crystallinity of the perovskite by simply controlling the post-annealing temperature. The results show that perovskite film prepared by hybrid spray method has the best crystallinity and device performance at a post-annealing temperature of 170 °C. On this basis, the bandgap of perovskite was changed from 1.53 eV to 1.76 eV by controlling the ratio of the organic halogen precursor solution. When the bandgap is 1.57 eV, a perovskite solar cell with an efficiency of 18.31% is obtained.
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
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Jing Feng,Lieshuang Zhong,Zhiguang Guo
A desert beetle-inspired surface with alternating wettability has shown great potential in fog harvesting, which allows for the easy acquisition of fresh water. The fog harvesting mechanism has been deeply understood via the efforts of many scientists. Current studies focus on the effective fabrication of the fog harvesting material, and facile fabrication can greatly enhance its real application. In this work, using a simple spraying method and selective modification of mercaptan, we successfully fabricated a biomimetic surface with hybrid wettability consisting of a hydrophobic micro-particle/hydrophilic nano-particle hierarchical structure. When the mass ratio of Cu 2 O microparticles to ZrO 2 nanoparticles in the spraying suspension was 8:1, the as-prepared hybrid sample had the highest fog collection efficiency of approximately 1707.25 mg·cm −2 ·h −1 , which was two times higher than that of the superhydrophilic sample, showing prominent enhancement of the fog harvesting capacity. The special hierarchical structure can facilitate the water harvesting behaviour. The fabrication method has a low production cost and is facile, making the large-scale manufacture of fog harvesting collectors possible.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Chen Lvxin,Yu Zhijie,Fang Yinchun
Structural colorization as a new green coloring method has received more and more attention. However, structural colors with only color can no longer meet the actual needs. It is of great practical significance to develop functional structural colors with brilliant colors and special function. In this study, Cu 2 O single crystal spheres with different sizes were successfully prepared and were sprayed on the surface of polyester/cotton fabric to obtain bright purple, purple red, light blue, dark green, grass green, and orange–yellow structural colors. Due to the introduction of polyacrylate (PA) adhesive, Cu 2 O structural colorized fabrics had excellent abrasion and washing colorfastness and stability. Meanwhile, the Cu 2 O structural color has little influence on the original softness and air permeability of fabric. The structural colorized fabric showed excellent antibacterial properties against E. coli and S. aureus , and the antibacterial rates decreased with the increasing of particle sizes of Cu 2 O spheres. The large-scale preparation of uniform structural colors on fabric can be realized by the spraying method. The fine and complex structural color patterns can also be obtained by spraying Cu 2 O single crystal spheres, showing good industrial application prospects. Therefore, this study provides experimental basis for the development of functional structural colors with brilliant colors and excellent antibacterial properties. Graphical abstract
研究领域:
材料科学
·
纺织工程
·
生物学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 6
·450
·
IF 4.3
Tianxin Chen,Yue Wang,Jing Li,Liang Zhao,Xingyang Zhang,Jian He
Oil–water separation is an important method for treating oily wastewater and recovering oil resources. Based on the different affinities of superhydrophobic surfaces to water and oil, long-term oil–water separation devices with low-energy and high efficiency can be developed through the optimization of structure and process parameters. Superhydrophobic coatings were prepared on stainless-steel mesh surfaces using a spray method to construct single-channel oil–water separation equipment with superhydrophobic/oleophilic meshes, and the effects of structural and process parameters on separation efficiency were systematically investigated. Additionally, a multi-channel oil–water separation device was designed and fabricated to evaluate the feasibility and stability of long-term continuous operations. The optimized single V-shaped channel should be horizontally placed and made from 150-mesh stainless-steel mesh folded at an angle of 38.9°. For the oil–water mixtures containing 20 wt.% oil, the oil–water separation efficiencies for single and two-stage separation were 92.79% and 98.96%, respectively. After 36 h of continuous operation, the multi-channel separation device achieved single-stage and two-stage separation efficiencies of 94.60% and 98.76%, respectively. The maximum processing capacity of the multi-channel device reached 168 L/h. The modified stainless mesh can remain stable with a contact angle (CA) higher than 150° to water for 34 days. The average residence time and contact area during the oil–water separation process significantly affect separation efficiency. By optimizing oil–water separation structures and process parameters, and using a superhydrophobic spray modification method, separation efficiency can be improved while avoiding the generation of secondary pollutants.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jian Gao,Hao Li,Weixiang Sun,Xiaowen Huang,Kai Zhang
Despite significant advancements in the development of superhydrophobic coatings on metal substrates, producing durable superhydrophobic coatings on a large scale remains a formidable challenge through a simple and low-cost method. In this study, a robust and environmentally friendly superhydrophobic coating (DTSC) was developed and prepared on the surface of X80 Pipeline Steel through a spray method using a multiple bonding between phytic acid and silane coupling agent and the van der Waals force of PDMS. The morphology, structure and composition of the DTSC were analyzed by field emission scanning electron microscope, three-dimensional profilometer, and Fourier transform infrared spectroscopy. The water contact angle of the DTSC is 158°, and the roll-off angle is 2° Regardless of whether the coating is subjected to 50 cycles of abrasive paper or 14 h of water drops, it still retains excellent superhydrophobicity. It is worth mentioning that the oil-water separation capacity of the superhydrophobic steel mesh is as high as 97 %. In a range of polluted environments, superhydrophobic coatings still exhibit exceptional static and dynamic antifouling performance, as well as excellent self-cleaning performance. Furthermore, the coating has a high level of acid and alkali resistance and effectively resists ultraviolet radiation and high temperatures. This work provides an environmentally and economically viable method for the industrial application of superhydrophobic coatings.
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
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jie Ren,Hongbo Xia,Yue Wu,Yaqun Han,Shufen Zhang,Suli Wu
Mie resonant structural colors have recently emerged as a promising approach for large-scale and high-precision material appearance design to replace plasmonic structures. However, Mie resonant structural colors are still limited in the gamut of red because high-order multipoles such as electric and magnetic quadrupoles (EQ, MQ) usually exist in blue band when the electric dipole (ED) and magnetic dipole (MD) located in red band. Here we achieved pure red Mie resonant structural color based on ZnO spheres. Both simulation and experimental results proved that the dipole resonance and quadrupole resonance can be separated effectively by decreasing the refractive index of the resonator. By comparing different materials, ZnO is the most suitable material to generate a pure red color. Further, by controlling the distance of ZnO spheres on the substrate, high-order multipole resonance was inhibited completely and pure red Mie resonant structural color was achieved. In addition, by tuning the size of ZnO spheres, bright purple, blue, green, yellow, orange, and red colors were also realized. Finally, complex patterns can be easily made by the spraying method. This work opens new perspectives on full-color Mie resonant structural colors.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Shahid Khan,Shengnan Chen,Yecheng Ma,Mahmood ul Haq,Youduo Li,Mohammad Nisar,Rashid Khan,Yong Liu,Jianxun Wang,Gaorong Han
An ultrasonic assisted spraying method was proposed to prepare TiN films in friendly conditions. The particle size effects of the nano-TiN suspensions upon the film structure, morphology, and optical properties were investigated. The results show that the larger particles (170 nm) form a porous structure, while the smaller ones (60 nm) form a dense structure. Both the films display good thermal stability under 700 °C vacuum annealing. The dense film shows a metal-like behavior of abnormal dispersion in the range over 550 nm, and the annealing process increases the carrier concentration by presenting the red shift of the plasma absorption. The water contact angles of porous films are about 0° and 153° respectively, before and after the annealing process. Such a variation could be attributed to the emerging of TiNO x that reduces the surface activity. The above-stated results demonstrate a promising potential to prepare TiN films by ultrasonic spray method and their applications as super hydrophilic or hydrophobic coatings by control annealing process.
研究领域:
材料科学
·
表面工程
·
物理化学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Jixi Zhang,Ligui Zhang,Xiao Gong
With the rapid development of bionic science and manufacturing technology, superhydrophobic surfaces have received extensive attention and research. However, the cumbersome steps, high cost, fluorine pollution, and poor durability greatly restrict its commercial promotion and application. Here, a simple spraying method is used to construct wear-resistant superhydrophobic coatings on various substrates such as glass, filter paper, copper sheets, and polyethylene terephthalate films, using an integrated fluorine-free suspension consisting of silica micropowder, nanofumed silica, epoxy resin, and polydimethylsiloxane. The prepared superhydrophobic coating can withstand 75 sandpaper abrasion cycles and can still maintain good superhydrophobic performance after other physical tests (e.g., hand kneading and tape peeling after knife scraping). In addition, the coating is extremely water-repellent under harsh conditions such as strong UV irradiation and extreme chemical corrosive media. In the buoyancy test, the coated filter paper can bear 39 times its own gravity. This water-repellent interface also has the ability to self-clean in air and oil environments due to its ultralow adhesion to water droplets. Thanks to its simplicity, cheapness, and environmental friendliness, this superhydrophobic coating has promising applications in the fields of construction, chemicals, transportation, and electronics.
研究领域:
材料科学
·
环境科学
·
制造技术
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Song Jiangxiao,Yu Yihao,Zhang Yan,Wu Jiahui,Wang Wei,Qi Dongming
The lightweight and adjustable properties of electromagnetic interference (EMI) shielding textiles make them an ideal choice as a layer in firefighting suits designed for complex electromagnetic environments. Enhancing the flame retardant performance of EMI shielding textiles is essential to mitigate rapid combustion risks in extreme conditions, such as high temperatures or fires, thereby reducing fire spread and minimizing damage caused by fire escalation. This study demonstrates the rapid and efficient preparation of flame retardant EMI shielding textiles by employing a spray method to coat cotton fabrics with Poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) doped with ethylene glycol (EG) and phytic acid (PA). The resulting coating exhibited a shielding effectiveness test (SE T ) value of 46.61 dB, effectively blocking 99.99% of electromagnetic waves (EMWs). Even after undergoing 600 bending cycles, the SE T value could still maintain 42.34 dB. PA not only functions as a dopant to significantly enhance the electrical conductivity of PEDOT:PSS but also confers superior flame retardant properties. In comparison with untreated cotton fabric, the peak heat release rate (pHRR) was reduced from 140.77 to 10.73 kW/m 2 , representing an impressive reduction of 92.37%. The total heat release (THR) decreased from 3.97 to 2.04 MJ/m 2 , marking a substantial decrease of 48.61%. The coated fabric exhibited excellent flame retardant and EMI shielding performance. Furthermore, this innovative material is anticipated to find extensive applications in smart wearables and sensor technologies.
研究领域:
材料科学
·
纺织工程
·
防火材料
✓ 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）