CHEMICAL PHYSICS LETTERS
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2021
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IF 2.328
Fanggong Cai,Xiaobo Lei,Jiao Geng,Wei Sun,Jun Chen,Sude Ma,Qinyong Zhang
The homologous Pb m Bi 2n X m+3n (X = S, Se, Te) is expected as solar cells or thermoelectric materials. Herein, stable phases of ternary PbBi 2 S 4 microspheres were successfully synthesized by two solution-phase-methods assisting with EDTA-2Na in aqueous media, namely traditional chemical reaction under atmospheric pressure and hydrothermal method under high pressure. Field-emission scanning electron microscopy and X-ray diffraction were used to characterize and determine the morphology and structure of the product. EDTA-2Na plays critical roles in the crystallization process of uniform PbBi 2 S 4 microspheres. A mechanistic model is proposed to account for these experimental findings. Furthermore, the optical band gaps of PbBi 2 S 4 were investigated as well.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
MACROMOLECULAR RESEARCH
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2013
·Vol. 21
·期 3
·306-310
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IF 1.639
Zhang Wen-Yi,Xiao Xin-Ze,Lv Chao,Zhao Jia,Wang Gong,Gu Xuan,Zhang Ran,Xu Bin-Bin,Zhang Dan-Dan,Li Ai-Wu,Zhang Yong-Lai,Sun Hong-Bo
Reported here is the fabrication of photopolymer hierarchical micronanostructures through a combinative process of electrospinning and subsequent photolithography. Electrospun SU-8 (epoxy-based negative photoresist) nanofiber films have been patterned into gratings with periods of 100, 200, 300, and 400 μm, respectively. Deposition of a silver nanolayer on these interlaced nanofiber films would lead to the formation of various plasmonic nanostructures, and therefore, giving rise to abundant surface-enhanced Raman scattering (SERS) “hot spots”. In the detection of Rhodamine 6G (R6G), probing molecule, the resultant SERS substrates show both high sensitivity and good reproducibility. The SERS enhancement factor could reach as high as ∼10 8 , indicating high efficiency. The fabrication of patterned, highly efficient SERS substrates may hold a great promise for the integration of SERS substrates in various microdevices such as microfluidic chips.
研究领域:
材料科学
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光学
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分析化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2021
·Vol. 56
·期 27
·15463-15480
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IF 4.22
Chen Tianchi,Guo Jie,Zhang Yingying,Hu Ningning,Zhang Jialu
Due to the construction of complicated micro-/nanohierarchical structures, designing durable superamphiphobic Al surfaces by a simple, environmentally friendly, and fast method remains a great challenge. In this article, we used a simple and environmentally friendly technique that includes laser marking and water boiling treatment to create triple-scale micro-/nanostructures on 1060 Al surfaces. The as-prepared 1060 Al surfaces revealed excellent superamphiphobicity with low sliding angles, owing to great Cassie state stability after 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FAS-17) modification. The contact angle of the water droplets reaches 160°, and that of peanut oil droplets reaches 155° on this surface. Meanwhile, this superamphiphobic Al surface also possesses excellent self-cleaning ability and oil resistance. Even when entirely immersed in oil sludge, the as-prepared Al surfaces can retain superamphiphobicity. Furthermore, the as-prepared superamphiphobic Al surface demonstrates outstanding chemical stability and endurance in a variety of application environments. In addition, the as-prepared superamphiphobic Al surface offers potential anti-icing and anti-frosting properties. Therefore, the as-prepared superamphiphobic Al surface will be a potential candidate with broad applications in aerospace, construction, and marine industries. Graphical abstract
研究领域:
材料科学
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表面工程
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2017
·
IF 2.843
Wei Jiang,Ming Mao,Wei Qiu,Yingming Zhu,Bin Liang
Lotus leaves and rose petals are both typical natural superhydrophobic surfaces, with low and high adhesion, respectively. This fact inspires us to prepare superhydrophobic surfaces with different levels of adhesion on iron by mimicking their hierarchical structures through three simple steps: abrasion, calcination, and modification. A uniform and stable superhydrophobic iron surface with excellent adaptability and wearability can be obtained, and its adhesion is tunable. The results confirmed that superhydrophobicity and adhesion are both dependent on the synergy of the microscale and nanoscale patterns of the hierarchical structure generated by the designed abrasion and thermal treating. The adhesion level can be controlled by simply adjusting the abrasion program to obtain the desired microscale pattern with a proper ratio of height-to-width of the microstructure. This easy, inexpensive, and clean three-step method is widely applicable for different engineering metals and alloys and suitable for large-scale production.
研究领域:
材料科学
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仿生学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 12
·1855
·
IF 5.3
Zhibin Jiao,Ze Wang,Zhaozhi Wang,Zhiwu Han
Antireflective and self-cleaning coatings have attracted increasing attention in the last few years due to their promising and wider applications such as stealth, display devices, sensing, and other fields. However, existing antireflective and self-cleaning functional material are facing problems such as difficult performance optimization, poor mechanical stability, and poor environmental adaptability. Limitations in design strategies have severely restricted coatings’ further development and application. Fabrication of high-performance antireflection and self-cleaning coatings with satisfactory mechanical stability remain a key challenge. Inspired by the self-cleaning performance of nano-/micro-composite structure on natural lotus leaves, SiO2/PDMS/matte polyurethane biomimetic composite coating (BCC) was prepared by nano-polymerization spraying technology. The BCC reduced the average reflectivity of the aluminum alloy substrate surface from 60% to 10%, and the water contact angle (CA) was 156.32 ± 0.58°, illustrating the antireflective and self-cleaning performance of the surface was significantly improved. At the same time, the coating was able to withstand 44 abrasion tests, 230 tape stripping tests, and 210 scraping tests. After the test, the coating still showed satisfactory antireflective and self-cleaning properties, indicating its remarkable mechanical stability. In addition, the coating also displayed excellent acid resistance, which has important value in aerospace, optoelectronics, industrial anti-corrosion, etc.Keywords:biomimetic coating;antireflective;self-cleaning;abrasion resistance;micro-/nano-structure
研究领域:
材料科学
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表面工程
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纳米技术
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
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2022
·Vol. 12
·期 17
·2994
·
IF 5.719
Daojun Zhang,Bei Jiang,Chengxiang Li,Hao Bian,Yang Liu,Yingping Bu,Renchun Zhang,Jingchao Zhang
Electrochemical energy storage devices (EESDs) have caused widespread concern, ascribed to the increasing depletion of traditional fossil energy and environmental pollution. In recent years, nickel cobalt bimetallic sulfides have been regarded as the most attractive electrode materials for super-performance EESDs due to their relatively low cost and multiple electrochemical reaction sites. In this work, NiCo-bimetallic sulfide NixCo3−xS4particles were synthesized in a mixed solvent system with different proportion of Ni and Co salts added. In order to improve the electrochemical performance of optimized Ni2.5Co0.5S4electrode, the Ni2.5Co0.5S4particles were annealed at 350 °C for 60 min (denoted as Ni2.5Co0.5S4-350), and the capacity and rate performance of Ni2.5Co0.5S4-350 was greatly improved. An aqueous NiCo-Zn battery was assembled by utilizing Ni2.5Co0.5S4-350 pressed onto Ni form as cathode and commercial Zn sheet as anode. The NiCo-Zn battery based on Ni2.5Co0.5S4-350 cathode electrode delivers a high specific capacity of 232 mAh g−1at 1 A g−1and satisfactory cycling performance (65% capacity retention after 1000 repeated cycles at 8 A g−1). The as-assembled NiCo-Zn battery deliver a high specific energy of 394.6 Wh kg−1and long-term cycling ability. The results suggest that Ni2.5Co0.5S4-350 electrode has possible applications in the field of alkaline aqueous rechargeable electrochemical energy storage devices for supercapacitor and NiCo-Zn battery.Keywords:NixCo3−xS4structures;micro/nanostructures;supercapacitors;Ni-Zn batteries
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Micromachines
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2023
·Vol. 14
·期 10
·1815
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IF 3.4
Qian-Kun Li,Yue Li,Yan-Jun Wang,Jin-Yong Qi,Yan Wang,Yao-Dong Liu,Xue-Qing Liu
Titanium dioxide photocatalysts can break down pollutants using natural light. They possess notable light stability, chemical stability, and catalytic effects, thus leading to extensive research worldwide. However, the limited light absorption range of titanium dioxide and their inefficiencies in generating and transporting photogenerated carriers hinder the enhancement of their photocatalytic performance. In this study, we employ a femtosecond laser composite processing method to create an Ag-TiO2nanoplate composite catalyst. This method doubles the catalytic efficiency compared with the structure processed solely with the femtosecond laser. The resulting Ag-TiO2nanoplate composite catalysts show significant promise for addressing environmental and energy challenges, including the photodegradation of organic pollutants.Keywords:femtosecond laser;hierarchical micro-/nanostructures;photocatalyst;titanium dioxide
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Colloid and Interface Science Communications
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2020
·
IF 2.831
Mingchu Xia,Tao Yang,Shiyao Chen,Guangming Yuan
In this study, a simple and cost-effective method was developed to fabricate superhydrophobic coating on wood surface. The prepared superhydrophobic coating had a large water contact angle (159°), less water slide angle (6°), good durability, abrasion resistance property, excellent thermal stability, and good acid and alkali resistance property. Notably, the coatings had self-cleaning properties in air or oil environment. The superhydrophobic coating was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and Fourier transform infrared (FTIR) spectroscopy. We prepared the classical micro/nanostructured SiO 2 on the wood surface on which the low surface free energy substance 1H,1H,2H,2H-perfluoroalkyltrichlorosilane (PFDS) was successfully modified. Furthermore, the treated wood had significantly better physical properties including water uptake and dimensional stability. The developed superhydrophobic coating is easy to fabricate and has great significance for the functional modification of wood.
研究领域:
材料科学
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表面工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2021
·
IF 6.707
Jiao Yang Lu,Fu Rui Zhang,Xue Zhi Ding,Li Qiu Xia,Wei Tao Huang
Extracellular matrix (ECM) with various micro/nano features is an important chemical and physical clue to control cell behaviors. Fish scale surface has rich structures and similar components to ECM, but there are no reports on directly using the natural surface of fish scales to guide cell behavior. Herein, natural interface of waste fish scales can be directly, simply, green, and low-costly used to regulate cell behavior. A series of characterization showed that the natural surface of fish scales is rich in micro/nano structures (groove, short ridge, fibers), contain collagen and hydroxyapatite, has suitable wettability and no cytotoxicity. These natural structures on waste fish scales have adjustable cell guidance abilities, which are consistent with the anisotropy levels of these structures (ordered fibers > grooves > damaged fibers > short ridges). Moreover, cell contact interaction with micro/nano topographies on the fish scale surface is dynamically adjustable with growth time, and also increased the chemoresistance of cancer cells to drug (irinotecan and cisplatin). Due to its advantages of wide material sources, waste recycling, patterning-free, and pretreatment-free, directly using biowastes (fish scales) not only provides a new opportunity for the development of in vitro anisotropic culture platform, but also helps to deepen the understanding and application of natural materials.
研究领域:
生物材料学
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细胞生物学
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再生医学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
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2022
·
IF 6.137
Yiming Jian,Hongtao Gao,Yuying Yan
Multifunctional superhydrophobic surfaces with dual-scale hierarchical structures have drawn considerable interest in real-world applications. The complicated fabricating process, higher costs, and poor durability limit the widespread utilization of bio-inspired superhydrophobic surfaces. Herein, we use an effective method to create a micron-nanoscale (dual-scale) hierarchical structure, which is composed of a micron-scaled rough structure constructed by a chemical-etching process and a secondary nanostructure obtained by hydrophobic nano silica (SiO 2 ) modification. The micron-nanoscale hierarchical structured surface has superhydrophobicity with a water contact angle of 161.5°±1.9°. Compared with the micron-scaled rough structure surface, the manufactured micron-nanoscale hierarchical structured surface presented excellent anti-icing properties with a freezing delay time of 5013.6 s at -15 °C. The frost layer on the micron-nanoscale hierarchical structured surface can be rapidly melted to transform into some isolated water droplets in about 7 s due to its ultra-low water adhesion force. Additionally, the prepared superhydrophobic micron-nanoscale hierarchical structured surface has chemical stability and mechanical durability except for the delayed icing and reduced frosting performance. The construction of a micron-nanoscale hierarchical structure is expected to expand superhydrophobic surface applications in anti-icing, anti-frosting, and self-cleaning.
研究领域:
材料科学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
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2025
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IF 4.8
Jing Mengfan,Cao Fukang,Zhang Zerun,Wu Shasha,Ren Yue,Wang Yaming,Liu Chuntai,Shen Changyu
Natural cellulose fibers have a unique hierarchical structure, starting from nanofibers, to microfiber bundles, and consequent to large scale fibers. This work wants to utilize this characteristic to tailor the surface morphology of plant-based fabrics in situ, avoiding complex separate washing process, and explore their functional applications. Specifically, ramie fabric was moderately oxidated using the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)/NaClO 2 /NaClO system. The scanning electron microscopy results show that a large number of cellulose micro-nanofibers can protrude from the fiber surface on the TEMPO-mediated oxidized ramie fabric (TORF) by controlling the reagent additions, which enlarges the specific surface area of the fabric. Subsequently, the crystal structure, chemical structure, carboxylate content and mechanical properties of the fabrics with different degrees of oxidation were determined in detail. In addition, the TORF was successfully modified by carbon nanotubes (CNTs) through simple physical adsorption. The electrical conductivity of the CNT-modified TORF increases with the oxidation degree of the fabric. Moreover, it shows application potential in fields such as electric heating. Based on the natural hierarchical structure, this work provides new ideas for the surface structure tailoring of natural plant fabrics and fibers, and also provides a platform for fabric functionalization. Graphical abstract
研究领域:
材料科学
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纺织工程
·
功能化材料
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Yujie Jiang,Cancai Wang,Zhi Liu,Minghao Zhang,Jiayi Zhang,Qian Liu,Dejin Zhang,Yuetao Liu
At present, silicone superhydrophobic coatings are attracting much attention in the fields of anti-corrosion and antifouling, so they have a broad application prospect. In this paper, superhydrophobic surfaces with continuous micro/nano structure were prepared on various substrates using a simple blending method similar to the conventional preparation of RT vulcanized silicone rubber. The difference was that the new kinds of crosslinker (MF-S) was synthesized by 3-glycidyloxypropyltrimethocysilane and 3-aminopropyltriethoxysilane. Linear fluorinated copolymer (L-SF) was prepared by free radical polymerization of 3-mercaptopropyltriethoxysilane (MPTES) and 1H, 1H, 7H-dodecafluoroheptyl methacrylate (DFMA). And the condensation reaction with α, ω-dihydroxypodimethylsiloxane (PDMS), tetraethyl orthosilicate (TEOS), and inorganic nanoparticles constructed superhydrophobic coatings with continuous micro- and nanostructures. The coating had a water contact angle (WCA) of up to 162° and a sliding angle (SA) as low as 2°. What's more, the WCA of the coating remained around 160° and the SA stayed below 5° after sandpaper abrasion, UV irradiation, and hot and cold treatment. The adhesion of the coating on different substrates was higher than 2 MPa. Due to the synergistic effect of the superhydrophobicity of the coating and the photocatalytic activity of the TiO 2 nanoparticles , the coating achieves an antimicrobial efficiency of 97.8 % against Staphylococcus aureus . The synergistic effect of the air layer and the densification of the coating resulted in the electrical impedance modulus at the lowest frequency of the coating remaining two orders of magnitude higher than that of the bare carbon steel plate after several days of immersion in sodium chloride solution. The work showed great potential for application in anti-corrosion and anti-fouling coatings.
研究领域:
材料科学
·
表面工程
·
化学工程
✓ 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）