CORROSION SCIENCE
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2020
·
IF 6.479
Tong Liu,Haichao Zhao,Jingyu Li,Dawei Zhang,Wenru Zheng,Liping Wang
A giant molecule containing hydrophobic polyhedral oligomeric silsesquioxane (POSS) and protonic acid-doped tetraaniline (ATA) was designed and synthesized via isocyanate–amine reactions. This flower-like filler exhibits redox activity and high specific capacitance (280 F g −1 ), making it feasible for corrosion protective applications. Electrochemical impedance spectroscopy, local electrochemical impedance spectroscopy, and salt spray tests were performed to evaluate the effect of POSS–ATA on the corrosion inhibition performance of the coating. This giant molecule expands the scope of conducting polymers for the active corrosion inhibition of metallic substrates and provides a platform for studying the multi-responsive self-assembly behaviour of conducting polymers.
研究领域:
材料科学
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电化学
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防腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
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2016
·
IF 2.299
Jing Huang,Zhikang Liu,Shan Wang,Quanling Yang,Bin Liu,Lei Liu,Mengkui Wang,Chuanxi Xiong
A simple and effective approach is used to obtain the amino-capped tetraniline, which can be doped by the nonylphenol polyoxyethylene ether sulfate to acquire self-suspended tetraaniline through a common dialysis. The synthetic self-suspended tetraaniline was flowable at or near room temperature. Furthermore, the tetraaniline fluid could directly present the liquid crystal property without any solvent. Also the self-suspended tetraaniline exhibited a high electrical conductivity, which reached up to 0.1 S/m.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Haichao Zhao,Tong Liu,Chengcheng Jiao,Feng Yang
In this work, epoxy coatings containing phytic acid-doped tetraaniline (PATA) nanoparticles for Q235 steel were prepared and their anticorrosive properties were investigated. Synthesized PATA nanoparticles were characterized by scanning electron microscope (SEM), scanning probe microscope (SPM), photoelectronic spectroscopy (XPS), and Raman test. The anti-corrosion properties of coating were studied by the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and scanning vibrating electrode technique (SVET). The experimental results showed that the content of the PATA nanoparticle has a positive effect on the barrier ability of the epoxy matrix. The epoxy coating containing 0.25 wt% of PATA nanoparticles has superior corrosion protection property and a satisfactory self-healing effect. The self-healing effect of PATA/EP coating ascribes to the synergistic effect of the passivation of phytic acid ions and tetraaniline. As an effective anticorrosion filler, the PATA nanoparticle has the potential to apply to the field of corrosion protective coating.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Dan Sun,Qilong Chen,Yi He,Yang Bai,Changhua Li,Rui Gou,Chuanfang Zhang,Xinbo Xu,Haichao Zhang
The main aim of this study was to exploit the advantages of dopamine and tetraaniline (TA) to enhance the physical barrier properties and active anti-corrosion performance of composite coatings ; in this study, the growth of polydopamine on the surface of Co-MOF enhanced its compatibility with waterborne epoxy, and Co-MOF-PDA-TA (MP-TA) was successfully synthesised by adding dopamine and tetraaniline via Michael addition , confirmed through characterisation methods such as Fourier-transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy. MP-TA can be added as a nanofiller additive to water-based epoxy coatings, and a detailed study on the corrosion resistance of the prepared composite coatings showed that the composite coating containing 0.50wt% MP-TA/WEC exhibits good anti-corrosion performance with an impedance modulus at low frequency (0.01 Hz) of 7.253 × 10 9 Ω cm 2 because TA not only prolongs the time required for corrosion ions to reach the interface but also forms a passivation film on the steel surface. Moreover, the reduced TA can be oxidised to EB or even LEB by releasing two electrons, which further promotes the formation of a passivation film, providing a good pathway for the application of MP-TA as a multifunctional additive.
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Ling Li,Jing Ma,Yuan Cui,Chong Liu,Hao Li,Dayang Xie,Tinghong Wang,Yanwei Li,Yanhui Li
Antibiotic resistance induced by antibiotic abuse is considered as one of the most serious public health problems. Antibacterial photodynamic therapy (APDT) using an efficient photosensitizer has been gaining increasing attention in recent years owing to its high efficacy and lack of drug resistance. Herein, we reported a photosensitizer system composed of tetra-aminophenyl porphyrin (TAPP) loaded in a guanidinium-based ionic covalent framework (COFTGTp) via π–π interactions to form TAPP/COFTGTp. The aim was to use it for APDT, which will not only solve the problems with TAPP as a photosensitizer, wherein it easily aggregates in aqueous solution and is ineffective against Gram-negative bacteria, but can combine the antibacterial activity of the cationic COFTGTp with the APDT induced by TAPP to achieve optimal antibacterial effects on both Gram-positive and Gram-negative bacteria. After TAPP loading in COFTGTp, the stability of TAPP/COFTGTp in aqueous solution was enhanced compared with TAPP, and the drug-loading efficiency could reach 27%. Under white-light irradiation, TAPP/COFTGTp can be activated to catalyze oxygen conversion into reactive oxygen species (ROS) including singlet oxygen (1O2); this will annihilate bacteria via the full use of the positive charge of cationic COFTGTp, which closes the distance between the bacteria and ROS. In addition, MTT and hemolysis experiments showed that TAPP/COFTGTp was almost noncytotoxic and did not cause hemolysis. Most remarkably, the minimum inhibitory concentrations (MICs) of TAPP/COFTGTp for E. coli and S. aureus were 100 μg mL−1 and 50 μg mL−1, respectively. As a result, TAPP/COFTGTp is expected to be an antibacterial material and have promise for substituting traditional antibiotics to solve antibiotic resistance and the emergence of superbacteria.
研究领域:
材料科学
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微生物学
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药理学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
Peng Liu,Qi Wang,Dongshan Wang,Xin Kang,Jingye Niu
The electrochemical capacitive property of the tetraaniline (TA) microcrystals was investigated for the first time in the present work. The TA microcrystals/reduced graphene oxide (TA/rGO) composite film was optimized by facile vacuum filtration, with thickness of 0.043 mm, electrical conductivity of 4.22 S/cm, and stable specific capacitance near 420 F/g at 100 mV/s for 9000 cycles as free-standing electrode. The superior electrochemical stability should be originated from the crystal structure of the TA flakes, which could efficiently prevent the volume change and hydrolytic degradation during the charging/recharging cycles. The TA/rGO based symmetrical solid-state supercapacitor possessed a high specific capacitance of 459.1 F/g at 1 A/g, an excellent cyclic stability with retention of 89.5% after 2000 cycles and an outstanding flexibility with retention of 77.9% after 100 cycles of 120°-bending.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Arabian Journal of Chemistry
·
2017
·
IF 4.553
Peiling Shi,Rui Xue,Yuli Wei,Xi Lei,Jiebing Ai,Ting Wang,Zheru Shi,Xiao Wang,Qin Wang,Fathelrahman Mohammed Soliman,Hao Guo,Wu Yang
A novel electrochemical platform was designed and prepared for simultaneous determination of p-acetaminophen (AMP) and p-aminophenol (AP) by combining the excellent conductivity and electrocatalytic activities of tetraaminophenyl porphyrin functionalized multi-walled carbon nanotubes (CNTs-CONH-TAPP) and gold nanoparticles (AuNPs). The as-synthesized CNTs-CONH-TAPP composites were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscope. The incisive oxidation current responses of AMP and AP at the modified electrode promised a sensitive and selective simultaneous determination of AMP and AP. Under optimized conditions, the peak currents were directly proportional to the concentrations of AMP and AP over the ranges of 4.5–500 μmol L −1 and 0.08–60 μmol L −1 , respectively, and the limits of detection were 0.44 μmol L −1 for AMP and 0.025 μmol L −1 for AP(S/N = 3) respectively. The proposed modified electrode showed excellent selectivity, reproducibility and long-term stability and could be applied in simultaneous determination of p-acetaminophen and p-aminophenol in real samples.
研究领域:
分析化学
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材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER INTERNATIONAL
·
2022
·Vol. 71
·期 11
·1278-1286
·
IF 3.213
Miao Dai,Siyuan Li,Yan Cui,Wei Zhang,Hui Shi,Kai Pan,Wei Wei,Xiaoya Liu,Xiaojie Li
Although magnesium (Mg) and its alloys are promising biodegradable materials for orthopedic implants, rapid and uncontrollable degradation of Mg is still a challenge for clinical applications. In this work, electroactive polymer coatings were prepared to improve the corrosion resistance and cytocompatibility of Mg alloys. Amphiphilic electroactive tetraaniline (TANi)-conjugated poly( γ -glutamic acid) ( γ -PGA) with various TANi modification rates ( γ -PGA–TANi 10 , γ -PGA–TANi 20 , γ -PGA–TANi 27 ) were first synthesized. γ -PGA–TANi colloidal particles, prepared by a self-assembly method, were then coated on Mg alloys by electrophoretic deposition. The prepared γ -PGA–TANi coatings showed a homogeneous surface and good adhesion on AZ31 Mg alloys. Electrochemical analysis and in vitro immersion tests revealed that γ -PGA–TANi-coated Mg exhibited superior corrosion resistance, which was mainly attributed to the electroactivity of the γ -PGA–TANi coatings, leading to the rapid formation of a passivation layer to prevent the further corrosion of Mg alloys. Furthermore, the γ -PGA–TANi alloy coatings efficiently regulated Mg 2+ release and pH value of coated Mg alloy during immersion for 40 days. In comparison with bare Mg alloy, the coated Mg alloy also showed better cytocompatibility, where L929 cells emerged with a good cell adhesion and viability. These results indicate that electroactive γ -PGA–TANi coatings have promising potential for corrosion resistance of Mg alloys. © 2022 Society of Industrial Chemistry.
研究领域:
材料科学
·
生物医学工程
·
腐蚀科学
·
表面工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）