JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2014
·
IF 3.552
Zhisong Lu,Cuiping Mao,Mei Meng,Sangui Liu,Yunli Tian,Ling Yu,Bai Sun,Chang Ming Li
To endow silk with UV-shielding ability and antibacterial activity, CeO 2 nanoparticles were immobilized on silk surface via a dip-coating approach without changing silk structure. Surface density of the nanoparticles could be easily adjusted by controlling the number of dip-coating cycle. Enhanced thermal stability of the modified silk is exhibited in thermogravimetric analysis (TGA) and derivative thermogravimetric analysis (DTG). The excellent UV-protection ability and antibacterial property of the CeO 2 nanoparticle-coated silk are demonstrated in UV–vis diffuse reflectance spectroscopy and colony-forming capability test, respectively. Based on the data, it can be concluded that CeO 2 nanoparticles could be used as a very promising coating material to modify silk for UV-protection and antibacterial applications.
研究领域:
材料科学
·
纺织工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Royal Society Open Science
·
2020
·Vol. 7
·期 1
·
IF 2.646
Tianrui Chen,Hui Yang,Shengchi Bai,Yan Zhang,Xingzhong Guo
With polyol-synthesized silver nanoparticles (AgNPs) as raw materials, the silver electrodes with high conductivity were fabricated via a dip-coating method followed by sintering process, and the effects of the dip-coating and sintering process on the conductivity and surface roughness of silver electrodes were investigated in detail. The silver film with a thickness of 1.97 µm and a roughness of about 2 nm can be prepared after dip-coating at a pulling rate of 500 µm s−1 for 40 coating times. The non-conductive dip-coated silver films are transformed into conductive silver electrodes after conventional sintering in a muffle oven, infrared sintering and microwave sintering, respectively. Compared with high sintering temperature and long sintering time of conventional sintering and infrared sintering, microwave sintering can achieve quick sintering of silver films to fabricate high conductive silver electrodes. The silver electrodes with a sheet resistance of 0.75 Ω sq−1 and a surface roughness of less than 1 nm can be obtained after microwave sintering at 500 W for 50 s. The adjustable dip-coating method followed by quick microware sintering is an appropriate approach to prepare high conductive AgNPs-based electrodes for organic light-emitting diodes or other devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 28
·期 23
·17772-17777
·
IF 2.019
Li Jiajia,Han Xiuxun,Zhao Yun,Li Jian,Wang Min,Dong Chen,Hao Zhaomin
A novel Cu 3 BiS 3 nanorods film was prepared by a facile dip-coating method and its compositional, structural and optoelectronic properties were systematically characterized. A possible reaction mechanism of Cu 3 BiS 3 was also discussed briefly. Optical absorption investigation revealed that Cu 3 BiS 3 nanorods film has a direct band gap of 1.46 eV. Photoelectrochemistry of hydrazine free unannealed film displays a strong p-type photoresponse, as high as ∼1.0 × 10 −4 A/cm −2 at an applied potential of −0.5 V versus Ag/AgCl under the visible light irradiation. The photocurrent response measurement on the Cu 3 BiS 3 nanorods film sheds light on the potential application as a low-cost, high-reproducibility and high-yield nanorods preparing approach towards efficient Cu 3 BiS 3 photoelectricity and photovoltaic materials.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
L. Wu,D.J. Yang,C.J. Hu,S. Liu,Q.G. Chen,J.Y. Shi,F. Wu,Y. Xiang
The electrodeposition-based three-state electrochromic device with its electrode surface modified by dip-coated titanium dioxide (TiO 2 ) thin films shows significantly improved cycling stability compared to the device modified with spin-coated ones. The decrement rate of optical transmittance contrast for spin-coated device after 1500 cycles is reduced significantly from 66% to 28% for dip-coated device, indicating ~60% improvement. A comparative study of the structural and morphological features of dip- and spin-coated TiO 2 thin films reveals that the surface uniformity of dip-coated device is much better than that of spin-coated one, leading to an improved overall surface roughness, which is a primary factor of the cycling stability. Although the difference in the surface roughness is marginal for the smooth parts of both the dip- and spin-coated TiO 2 thin films, the improved uniformity of the dip- coated TiO 2 thin film surface is conducive to the quick dissolution of Ag back into electrolyte during the switching between the coloration and bleaching states thanks to the reduced locally residual Ag around or into the rough regions caused by TiO 2 nanoparticles agglomeration.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
·
2024
·Vol. 49
·期 7
·9637-9647
·
IF 2.6
Yu Rui,Song Weiqiang,Zhang Yin,Guo Zhenyu,Guo Zidong,Miao Wei,Cheng Wenxi
Poly(lactic acid) (PLA) was injected into test sheets and then dipped in a suspension of xylene and trimethylol propyl silane (95/5) containing titanium dioxide (TiO 2 ) nanoparticles (NPs) at 65 and 85 °C for 3, 7, 10 and 15 s. TiO 2 NPs aggregates coated the sheet surfaces after dipping. The camera photos and the static water contact angle (WCA) showed that the dip-coating transformed all the hydrophilic surfaces into hydrophobicity, and especially that the sheet with retention of 85 °C and 7 s exhibited superhydrophobicity, while the water droplets on the 65 °C sheets were in pinning state. The water droplets rolled off the superhydrophobic surface at tilt angles below 3°, showing self-cleaning. The retention period of 7 s was suitable, as it achieved the highest surface hydrophobicity regardless the retention temperature. The images of scanning electron microscope (SEM) and optical microscopes demonstrated the deposition of TiO 2 NPs aggregates on the sheet surface and the formation of the porous structure on the surface. The combination of the aggregates with nanoscale protrusions and the pores with nanoscale pore walls constituted a hierarchical structure. The retention temperature of 65 °C made the pores shallow and wide, and the TiO 2 concentration of 2% instead of 1% caused the excessive TiO 2 NPs aggregates to cover the PLA substrate, reducing the WCA. The wetting models of water droplets on the surfaces of the 65 and 85 °C sticks were classified as Wenzel and Cassie states, respectively.
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
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Junjie Yuan,Siyu Yan,Xiong Zhang
In this work, superhydrophilic antifogging antireflective coatings were prepared by the dip-coating of polyacrylate/polypropylsilsesquioxane core-shell nanocomposite particles’ sols followed by calcination at 500 °C for 4 h. The results showed that the transmittance of all the coatings in the band of 350–1000 nm was significantly higher than that of pure glass substrate, showing excellent broadband and antireflection performance. In particular, the maximum transmittance of the coatings with 8.0 g of propyltrimethoxysilane (PTMS-8) was 99.1% at the wavelength of 546 nm, and the average transmittance of the coatings reached 98.0% in the wavelength range of 400–700 nm and was enhanced by 9.3% compared to that of the bare glass substrate. Furthermore, the contact angle of the coatings decreased with the increase in the surface bumps structures of the coatings, and the minimum contact angle of the surface of the coatings with 10.0 g of propyltrimethoxysilane (PTMS-10) reached nearly zero within 0.5 s when the bumps evolved into a worm-like nanostructure, showing excellent superhydrophilic and antifogging properties. It was concluded that both roughness and special worm-like nanostructures give rise to the superhydrophilicity of the coatings.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Yulong Yang,Wanyi Fu,Li Chen,Congyu Hou,Xixi Chen,Xihui Zhang
Ceramic nanofiber membrane (CNM) based on attapulgite (APT) without any intermediate layer neither any cracks was fabricated by a one-step dip-coating method. The effects of sintering temperature and dip-coating time on the physicochemical properties and performances of prepared CNMs were investigated. The increase of the sintering temperature up to 700 °C reduced the bending strength, porosity and chemical stability of APT-based CNMs. Meanwhile, with the dip-coating time increased, the membrane thickness increased thereafter reduced. The APT-based CNM fabricated at a sintering temperature of 600 °C and with a dip-coating time of 15 s had an average pore size of 20.4 nm, high porosity (above 60 %), good permeability of 118 L/m 2 h bar and a rejection of 96.6 % polymers with a molecule weight of 600 kDa. All these properties clearly suggest the practicability of the one-step dip-coating method to prepare ceramic nanofiber membranes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Peng Zhang,Ziling He,Xiaoming Luo,Zihan Jia,Limin He
Graphene oxide (GO) modified mesh was prepared by dip-coating with stainless steel mesh as substrate and GO as modification material for separating O/W emulsions. The chemical composition, micromorphology and wettability of the modified mesh were characterized. GO adhered more evenly to wire surface of the higher-mesh, making higher-mesh modified mesh surface more hydrophilic-underwater oleophobic. The effects of mesh number, modification time and stacking layers on water flux and separation efficiency were studied through step-by-step optimization. It was concluded that the triple-layer 2800 mesh secondary modified mesh exhibited the best separation performance considering both water flux and separation efficiency. On this basis, the optimal modified mesh was comprehensively tested by varying the temperature, salt content, pH value and oil physical properties. The separation performance also proved favorable in terms of stability and durability. Therefore, the proposed GO modified mesh exhibits significant advantages and industrial application prospects for separating O/W emulsions.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2024
·
IF 6.4
Jiaao Wu,Yi Li,Xueyuan Wu,Xiaoran Zhang,Qingxia Liu,Shuai Qu,Liu Yuan,Yang Wang
Fiber photodetectors (FPDs) are promising candidates for wearable applications due to their flexibility, knittability, and full-angle detection. The current state-of-the-art FPDs based on inorganic photosensitive materials show drawbacks in mechanical flexibility. The organic FPDs (OFPDs) are superior, while the fabrication is limited by multi-layer process compatibility issues. Herein, a diode-type five-layer OFPD with Zn/ZnO/PBDB-T:ITIC-Th/MoO 3 /PEDOT:PSS structure is prepared by combining thermal evaporation with a successive dip-coating method. It is worth mentioning that the uniform coaxial MoO 3 interfacial layer is processed by the proposed fiber-compatible thermal evaporation technique, while the other functional layers are enabled by the solution-based dip-coating method. At the bias of −0.5 V, the optimized OFPD exhibits a dark current density of 8.46 × 10 −8 A cm −2 , a responsivity of 86.4 mA W −1 (@ 760 nm), and a specific detectivity of over 10 11 Jones in the visible range of 400–760 nm. Besides, the device displays a fast response speed of 0.44 and 0.14 ms for rise and fall time, showing the capability of full-angle detection. The device is demonstrated in photoplethysmography for real-time heart-rate monitoring, suggesting its potential for practical application in wearable electronics.
研究领域:
材料科学
·
电子工程
·
光学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Hongbin Li,Wenying Shi,Haixia Zhang,Rong Zhou,Xiaohong Qin
Internally pressurized polyamide thin-film composite (TFC) hollow fiber nanofiltration (NF) membrane with high ions selectivity was prepared by a facile coating method including the dip-coating of the aqueous phase and reverse direction coating of organic phase. Surface composition and morphologies of the prepared NF membrane were characterized by ATR-FTIR, FESEM and AFM. Membrane hydrophilicity was evaluated by Water Contact Angle (WCA) measurements. The dip-coating time of the aqueous phase and reverse direction coating time of organic phase were optimized. The results indicated that the ultra-thin functional layer was successfully formed on the lumen side of hollow fiber PSF substrate membrane. Under the optimized conditions including the dip-coating time of 20 min and reverse direction coating time of 60 s, the prepared TFC hollow fiber NF membrane exhibited an excellent separation performance with the 99.5 % rejection of MgSO 4 (1 g/L) and pure water flux of 43.3 L/m 2 h at 0.7 MPa. The prepared NF membrane showed a high selectivity with the separation factor of MgSO 4 /NaCl) of 7.8. NF membrane exhibited a uniform separation performance along fiber length compared with the traditional single direction coating.
研究领域:
材料科学
·
膜分离技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Liming Zhang,Shiqing Hu,Zhongwei Cao,Bingjie Pang,Jingyi Wang,Peng Zhang,Xuefeng Zhu,Weishen Yang
Proton-conducting ceramic cells are promising devices for high-efficient energy conversion, while the preparation of defect-free electrolyte membranes is difficult and blocks their quick development. Here, a vacuum-assistant dip-coating method is developed to prepare defect-free BaCe 0.4 Zr 0.4 Y 0.1 Yb 0.1 O 3-δ (BCZYYb4411) proton-conducting electrolyte membranes on porous anode (40 wt%BCZYYb4411 - 60 wt%NiO) substrates. Unlike the conventional dip-coating process, by using the vacuum-assistant dip-coating method, defects (like running through pinholes, cracks) that would cause gas leakage, short-circuit and low open-circuit voltage (OCV) in following electrochemical tests can be eliminated. By tuning the mass concentration of electrolyte powders in the coating slurry, thin electrolyte membranes with different thicknesses can be reproducibly prepared. Proton-conducting fuel cells (PCFCs) with BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3-δ (BCFZY0.1) cathode show high OCV values closing to the theoretical value of 1.13 V at 600 °C, demonstrating that dense and defect-free electrolyte membranes are fabricated. The as-prepared PCFC with a 10-μm-thickness defect-free electrolyte membrane shows a high peak power density reaching up to 761 mW cm −2 at 650 °C and stability of more than 250 h at the current density of 200 mA cm −2 at 600 °C. All these results illustrate that the developed method is feasible to prepare dense and thin electrolyte membranes without defects for proton-conducting ceramic cells.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2020
·
IF 2.502
Kai Huang,Qi Cheng,Honglei Zhang,Ligang Lin,Qiying Wang
A simple and effective strategy is proposed for fabricating honeycomb-patterned ethyl cellulose (EC) films via a combination of the dip-coating and breath figure methods under a wide humidity range (40–90%). A mixture of toluene and methanol as a volatile solvent/nonsolvent pair was used to effectively control the surface morphology. Additionally, honeycomb patterns were successfully formed via dip-coating under a low humidity (relative humidity less than 40%), when water was directly added into the mixed solution. The important factors that influenced the morphology of EC honeycomb-patterned films were investigated, such as the humidity, solution concentration, and the withdrawal speed during dip-coating. The pore sizes could be controlled by changing the film-formation conditions. Water contact angle enables a transition from hydrophilic to hydrophobic. The possible mechanisms of honeycomb pattern formation are discussed. The fabrication of an ordered honeycomb-patterned film in a cost-effective and convenient manner will have broad application potential in the future.
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
危险品化学品经营许可证（带存储）