JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Weihao Fan,Huaiyuan Wang,Chijia Wang,Zhanjian Liu,Kaka Li,Yanji Zhu
CeO 2 was used as the only oxidant for aniline polymerization, and polyaniline (PANI) was grown on CeO 2 surface to form CeO 2 @PANI nanocomposites. SEM and TEM showed that the CeO 2 @PANI composites were nanorods in a core-shell structure. XPS indicated that CeO 2 -core was reduced by aniline into Ce 3+ , which was then captured by the PANI-shell. Then the passive ability of CeO 2 @PANI coating on steels was explored. EIS showed that the impedance modulus of the CeO 2 @PANI coating exceeded 10 8 Ω·cm 2 after accelerated immersion. The SVET and XPS confirmed that PANI polarized the anodic reaction, Ce 3+ suppressed the cathodic reaction, and PO 4 3− formed complex precipitation. Some high-valent metal oxides can directly oxidize the aniline polymerization to form MO@PANI hybrid particles. The cations obtained by the metal oxide reduction can be captured by PANI and participate in passivation together with dopants. This study provides a new kind of nanocomposite fillers that can effectively passivate steel substrates within epoxy coatings for long-time protection.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
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
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2021
·
IF 4.837
You Wu,Ru Yan,Yangyang Duan,Juan Qiu,Ting Chen,Houyi Ma
Because traditional chromating and phosphating processes are harmful to the environment and human health, an eco-friendly tannic acid (TA)-based conversion film technology is established by adopting a new self-assembly strategy of TA/metal complexes on iron surfaces in aqueous solutions. In this study, TA and TA/Zn films were conveniently fabricated by anchoring a certain amount of TA molecules on the iron surface through the coordination interaction between phenolic hydroxyls and metal ions . In contrast, the introduction of Zn ions in the film-forming process cannot only complex with more TA molecules to form a thicker conversion film but also accelerate the film-forming process and transform into ZnO, which can further inhibit iron corrosion. This combination leads to the excellent corrosion protection of TA/Zn film-modified iron (the corrosion protection efficiency is up to 92.39%). Moreover, impact tests show that the TA/Zn film can enhance the adhesion between the iron substrate and outer coating.
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
Materials
·
2022
·Vol. 15
·期 23
·8634
·
IF 3.748
Wuyifan Zhou,Feng Yang,Ling Yuan,Yangmin Diao,Ou Jiang,Yuan Pu,Yong Zhang,Yong Zhao,Dan Wang
Superhydrophobic coatings on iron surface have a wide application potential in medical instruments, chemical industrial equipment, and house construction. In this work, we developed a multi-functional superhydrophobic coating on iron surface with a high air/water contact angle of 162.3° and a low sliding angle of 2.4°. The construction of superhydrophobic coating involves physical friction processing to fabricate micropatterns and structures, followed by annealing treatment and surface chemical modification with 1H,1H,2H,2H-tridecafluoro-n-octyltrimethoxysilane. The obtained organic–inorganic composite material exhibited considerable optimization potential to anti-condensation performance. The low surface energy of the superhydrophobic coating also leads to poor adhesion of water, dust, and blood platelets, which is beneficial for applications in medical devices. The electrochemical and impedance test results demonstrated that the superhydrophobic surface provided effective corrosion protection for the iron substrate, with an 84.63% increase in corrosion protection efficiency. The experimental results showed that the anti-bacterial ratios reached 90% forE. coliand 85% forS. epidermidis, while the anti-bacterial ratios of ordinary iron were only 8% forE. coliand 15% forS. epidermidis, respectively.Keywords:iron surface treatment;superhydrophobic coating;anti-corrosion;anti-adhesive;anti-bacterial
研究领域:
材料科学
·
表面工程
·
腐蚀科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiangyu Ge,Linghao Zhang,Qiuyu Shi,Yuhao Xing,Yanfei Liu,Zhengfeng Cao,Wenzhong Wang
Achieving macroscopic superlubricity in electric environments on steel surfaces remains a challenge. This study achieved macroscopic superlubricity on steel surfaces by employing graphene oxide (GO) nanosheet additives with electric stimulation. Multiple factors were studied regarding the effect on lubrication performances. The morphology of the GO adsorption film on the intermittent contact surface (disc) is the main factor affecting the COF, as the continuous contact surface (ball) is required to overcome the peaks of GO film during sliding. The mechanism underlying the friction reduction is concluded as follows: when the intermittent contact surface (disc) was the positive pole, negatively charged GO migrated towards it, forming an adsorption film on its surface. The surface layer orientation of the GO film is relatively smooth, attributed to its contact with the negative pole (ball), resulting in friction reduction. This study illustrates the feasibility of achieving macroscopic superlubricity on steel interfaces through electric stimulation, thereby laying the groundwork for practical applications of superlubricity in engineering contexts, particularly in electric environments.
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2020
·Vol. 24
·期 1
·99-109
·
IF 1.654
Liangliang Zhang,Chenyu Liu,Fugui Li,Weihong Qiao
With the development of high-speed railways, there is an increasing demand for high-efficiency and environmentally friendly high-speed rail exterior surface cleaning agents. Based on emulsification experiment, contact angle experiment, solvent solubility experiment, and decontamination effect, this article provides the initial formulation for basic high-speed rail surface cleaner and a variety of improved formulations for special environments. The initial formulation uses cetostearyl alcohol ethoxylate C 16-18 -EO 10 (O-10) and 2-propyl-1-heptano ethoxylate i-C 10 -EO 5 (XP-50) as surfactants, dipropylene glycol butyl ether as solvent, citric acid as chelating agent, benzotriazole (BTA), sodium benzoate (SB), and triethanolamine (TEOA) as corrosion inhibitors. Then it is confirmed that adding 3% sodium percarbonate to the initial formula can effectively clean stubborn dirt. Increasing the BTA mass fraction to 3%, TEOA to 12%, add linoleic acid 2%, aluminum corrosion inhibitor (CIA) 3%, and Antirust 316 3%, can significantly improve the high-temperature corrosion-resistant detergent. Controlling BTA concentration not exceed than 0.5%, and adding an appropriate amount of hydrotrope (such as sodium xylenesulfonate), can ensure that the detergent will not delaminate within 6 h at 60°C, which effectively prolong its high temperature stability. The performance test results show that both initial formula and the improved formula meet the basic requirements, but the improved formula shows better performance in terms of cleaning ability, high-temperature corrosion resistance or high-temperature stability.
研究领域:
材料科学
·
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
·
2020
·
IF 3.99
Deng Wang,Jiaxin Yang,Fei Xue,Jihui Wang,Wenbin Hu
Zinc coordinated 1-hydroxyethylidene-1,1-diphosphonic acid (Zn-HEDP) film was fabricated on steel surface by coordination self-assembly method. The surface morphology and chemical composition of Zn-HEDP film were investigated by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS), and the structural and valence state of Zn-HEDP film was determined by Fourier transform infrared spectroscopy (FTIR), Raman spectra and X-ray photoelectron spectroscopy (XPS). The corrosion resistance of Zn-HEDP film in 3.5wt% NaCl solution was investigated by using potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS) techniques. The experimental results show that Zn-HEDP film is in a smooth surface with disturbed nanoparticles. The protection efficiency of Zn-HEDP film to steel in 3.5 wt% NaCl solution is firstly increased and then decreased with the increasing of zinc concentration, pH value and assembly time. The optimum preparation conditions for Zn-HEDP film are the zinc concentration of 10 mmol/L, pH value of 5.0 and assembly time of 30 min, under which the protection efficiency of film is reached to 95.79 %. The coordination between zinc ions and HEDP can effectively increase the binding energy with Q235 steel. Zinc ions can improve the compactness and thickness of Zn-HEDP films as bridging agents, which prevent Q235 steel from corrosive solution.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xuechao Song,Zhaoyang Guo,Yuxi Song,Jingchun Zhang,Haiyang Gu,Naoki Yamashita,Hengyi Lu,Kenji Fukuzawa,Wenjing Hu,Tomoko Hirayama,Jiusheng Li
Polymers’ advantage of multiple adsorption sites in solid-liquid adsorption is typically constrained by their inherent steric hindrance. The research focuses on optimizing polymer adsorption on iron surfaces through terminal polar group engineering to conquer steric hindrance and boost solid-liquid interfacial adsorption efficiency. Three polyether amine derivatives are synthesized: ATPE-MA (carboxyl/amide), ATPE-P2C (pyridyl/cyano), and ATPE-NC (amide/alkyl). In-situ monitoring and theoretical calculations show that terminal polar groups synergize with multi-adsorptive sites on the polymer backbone via a “molecular clamping” effect, overcoming steric hindrance. ATPE-MA’s carboxyl terminal drives planar adsorption through strong coordination, forming a 1.7 nm dense film with the highest adsorption energy. By contrast, ATPE-NC’s weak polarity causes partial chain detachment, leading to a 0.4 nm loose layer. The evaluation of lubrication performance investigates the macroscopic performance of adsorption properties in industrial applications: stable adsorption films trigger tribochemical reactions to form iron-based/amorphous carbon composite films for continuous lubrication. ATPE-MA’s superior adsorption promotes more interfacial molecular aggregation and tribofilm formation, thus has the best lubrication performance. This cross-scale analysis of “molecular engineering-adsorption behavior-macroscopic performance” offers new approaches for designing high-adsorption functional molecules in surface engineering.
研究领域:
材料科学
·
表面工程
·
高分子化学
·
摩擦学
·
化学吸附
✓ 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）