Asia-Pacific Journal of Chemical Engineering
·
2020
·Vol. 16
·期 1
·e2584
·
IF 1.06
Hao Xu,Guangming Lu,Shuan Liu,Jibin Pu,Shu Tian,Chunlong Mao,Shanjun Chen
A phytic acid-based surface tolerant epoxy coating was prepared, and the effect of phytic acid on the corrosion resistance of the composite coating on rusty carbon steel substrate was investigated. The results showed that the low-frequency impedance modulus of the composite coating on rusty carbon steel could reached 10 8 Ω·cm 2 order of magnitude after immersing for 480 h in 3.5 wt% NaCl solution. Compared with pure epoxy coating, the phytic acid-based surface tolerant epoxy coating on the rusty substrate exhibited better corrosion resistance even if with some artificial defects in the composite coating. The protective performance of the composite coating mainly came from the formation of a stable iron phytate chelate in the reaction of phytic acid and rust. For the rusty carbon steel, the original Fe 3+ on its surface was also transformed by phytic acid penetrating to the interface between the coating and the substrate. Therefore, a dense film was formed with the reaction of phytic acid and rust on the substrates, and the dense film became a part of the whole paint film, which could improve the corrosion resistance of the surface tolerant coating.
研究领域:
材料科学
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腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2021
·Vol. 32
·期 11
·4531-4546
·
IF 3.665
Sujie Yang,Bing Zhang,Mengru Liu,Yadong Yang,Xinliang Liu,Depeng Chen,Bibo Wang,Gang Tang,Xiuyu Liu
Using phytic acid (PA) and piperazine (Pi) as raw materials, piperazine phytate (PA-Pi) was fabricated by simple ionic reaction. Furthermore, A series of rigid polyurethane foam/piperazine phytate (RPUF/PA-Pi) composites were prepared by one-step water-blown technology. Thermogravimetric (TG) results showed that the addition of PA-Pi improved the thermal stability of RPUF/PA-Pi composites at high temperature. At 700°C, RPUF/PA-Pi20 exhibited the highest carbon residue of 25.8 wt%. Cone calorimetry and smoke density tests suggested that PA-Pi could reduce the heat and smoke release during combustion process of the composites, thus reducing their fire hazard. Thermogravimetric-Fourier transform infrared spectroscopy (TG-FTIR) indicated that PA-Pi significantly inhibited the release of toxic gases (isocyanate compounds, aromatic compounds, CO and HCN) and flammable gases (hydrocarbons and esters) during the decomposition process of RPUF/PA-Pi composites, effectively improving fire performance of the composites. Scanning electron microscope (SEM), Raman and Fourier transform infrared spectroscopy (FTIR) were used to characterize the carbon residue of RPUF/PA-Pi composites. The results showed that PA-Pi could promote the formation of dense carbon layer of composites and effectively prevented heat and mass transfer in the combustion process.
研究领域:
材料科学
·
燃烧学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2015
·
IF 2.912
Jia Guo,Yuan-Yuan Bian,Ke-Xue Zhu,Xiao-Na Guo,Wei Peng,Hui-Ming Zhou
Wheat bran contains a significant amount of the anti-nutritional factor phytate. This study is the first to explore the effectiveness of activating endogenous phytase and further reducing phytate content through resulting programmed cell death (PCD). Effects of solid–liquid ratio (1:1, 1:2, 1:3, and 1:6), incubation temperature (4, 20, 38, 55, and 70 °C), metal ions (Na+, K+, Ca2+, and Mg2+), gibberellin concentration (0, 5, 50, 500, 2000, and 5000 mg/L), hydrogen peroxide concentration (0, 0.2, 0.4, 0.6, 0.8, and 1.0%), and incubation time (30, 80, 180, and 360 min) on activation of endogenous phytase activity and phytate degradation in wheat bran samples are discussed in this study. It was found that when the wheat bran was incubated with distilled water at 55 °C for 80 min, its endogenous phytase activity was dramatically increased 4-fold from 12.96 to 53.54 FTU/g, whereas the phytate content was reduced by about 70% from 45.20 to 13.52 mg/g. By comparison of photomicrographs of raw wheat bran sample and sample incubated with distilled water for 360 min at 55 °C, a conclusion could be drawn that PCD in aleurone cells had occurred.
研究领域:
食品科学
·
植物生理学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2025
·
IF 8
Wenju Zhu,Shuang Xu,Xiaokang Yang,Kai Song,Shuixia Liu,Shuolong Wang,Wei Peng,Zhao Dai,Chunlei Jiang
Phytic acid's high-efficiency flame retardant and N-halamine antibacterial were synergistically applied to cotton fibers for durable antibacterial and flame retardancy. Antimicrobial flame retardant structures were characterized by H Nuclear Magnetic Resonance Spectra (NMR) and Fourier Transform Infrared Spectrometer (FT-IR). FT-IR, X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscope (SEM), Thermogravimetric (TG), Vertical Flammability Test (VFT), and Limiting Oxygen Index (LOI) were utilized to test and characterize the prepared cotton fibers. The results showed that the antibacterial flame retardant could be durably grafted on the surface of cotton fibers for a long time, and it still maintained its self-extinguishing property after 50 washing cycles, with an LOI value of 32.2 % and a damaged length of 67 mm. The N Cl bond was formed by simple bleaching treatment, which exhibited excellent bacteriostatic effect, and had a significant inhibitory effect on Escherichia coli and Staphylococcus aureus , and chlorine oxide, as an antibacterial factor, could be reactivated after long-term storage and washing. Through the systematic analysis of cone calorimetry and carbon residue, it was concluded that the flame retardant mechanism of antibacterial flame retardant was mainly condensed phase. The results of the physical property analysis of cotton fibers showed that the whiteness, air permeability, flexibility, and other physical properties of cotton fibers had no obvious change, while the hydrophilicity of the finished fibers were enhanced.
研究领域:
材料科学
·
纺织工程
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2018
·
IF 2.196
Hao Lei,Ning Pan,Xiaoqiang Wang,Hao Zou
A novel phytic acid impregnated polyaniline (PA-PANI) was synthesized by a in situ polymerization and supermolecular self-assembly method and has been used as an adsorbent for efficient capture of U(VI) from aqueous solution. The structure and morphology of the adsorbent were well characterized. The influence of different factors such as pH value, ionic strength, contact time, initial U(VI) concentration and temperature on the adsorption of U(VI) onto PA-PANI-3 were carried out by batch adsorption experiments. The results demonstrated an enhanced U(VI) adsorption capacity of 86.6 mg/g for PA-PANI-3, greatly exceeding that of polyaniline (PANI, 8.8 mg/g). The adsorption process follows the pseudo-second-order kinetic and Langmuir isotherm models with the theoretical maximum adsorption capacity of 90.3 mg/g. According to the calculation from the Dubinin–Radushkevich isotherm model equation, it is suggested that the adsorption is mainly a chemical adsorption mechanism. U(VI) is adsorbed on PA-PANI-3 via the phosphoric acid, amine, and imine groups. The U(VI) can be desorbed from the U(VI) adsorbed PA-PANI-3 with a desorption efficiency of 90.8% by using 0.1 mol/L Na2CO3 solution. This study demonstrated that PA-PANI could be used as an efficient adsorbent for removal and recovery of U(VI) from aqueous solution.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2021
·
IF 4.952
Xianliang Bao,Xianghui Yan,Guohua Zhang,Junxin Zhao,Zheling Zeng,Ping Yu,Deming Gong
Phytate, an anti-nutritional factor in Cinnamomum camphora seed kernel protein isolate (CPI), chelated with minerals and proteins to form complexes that reduced their bioavailability. The study aimed to evaluate the effects of phytase treatment on the structural and functional properties and in vitro digestibility of CPI. The results showed that the degree of phytate degradation was improved with the increase in phytase treatment time. Most of the original secondary structures were retained in the treated CPI samples. The removal of phytate increased the Zeta potential of CPI, and the protein isoelectric point was increased. Low phytate CPI samples showed higher thermal stability and higher Ca 2+ content. In terms of functional properties, foaming capacity was positively correlated with phytate content, whereas foam stability, emulsifying activity index and emulsion stability index were negatively correlated with phytate content. The reduction of phytate content had a positive effect on in vitro gastrointestinal digestion, and the bioavailability of CPI was significantly improved. These results have demonstrated that phytase treatment retained most of the original structure, and improved functional properties and digestibility of the protein isolate from Cinnamomum camphora seed kernel.
研究领域:
食品科学
·
营养学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jun Liao,Congcong Ding,Junping Shi,Liang Jiang,Qiuyi Wang,Lielin Wang
The application of chitosan-based materials for the separation of uranium from wastewater was limited due to the lack of active sites. In this work, a chitosan-based composite (CaCO3@aCS/PA) was effectively created by modifying chitosan with CaCO3 and phytic acid to enhance the adsorption performance of chitosan materials. CaCO3@aCS/PA showed no significant changes and no Ca2+ was detected in the solution after stirring for 10 h in a solution with pH > 3, indicating good stability of CaCO3@aCS/PA, which was beneficial for use in adsorption. Moreover, the adsorption capacity and adsorption percentage of CaCO3@aCS/PA for uranium reached 842.0 mg/g (298 K, pH = 4) and 95.4% (C0 = 10 mg/L, pH = 4) and the adsorption equilibrium time was significantly shortened, indicating that the modification with CaCO3 and phytic acid enhanced the adsorption ability of chitosan for uranium, which was related to the synergistic effect of various active sites (CO32–, PO43–, −OH, and –NH2) on CaCO3@aCS/PA for uranium adsorption.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 8
·3504-3513
·
IF 3.288
Qingqing Zhou,Jiayi Chen,Tianchi Zhou,Jianzhong Shao
A flame-retardant conductive cotton fabric switch was successfully prepared by the in situ polymerization of polyaniline doped with novel phytic acid (PA) by impregnation in an ice water bath for 24 h. The surface morphology, chemical composition, and thermal properties of the fabric before and after the in situ polymerization of polyaniline with PA were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), thermogravimetric analysis (TG), and TG-FTIR. The experimental results demonstrated that the limiting oxygen index (LOI) of the original fabric increased to 32% and the sheet resistance (Rs) decreased to 1.13 kΩ □−1. Under the PA de-doped state, the fabric had no flame-retardant and conductivity properties. Nevertheless, the excellent flame-retardant and conductivity properties of the fabric were obtained once more after re-doping with PA, which indicated that the flame-retardant and conductive textile switch was prepared successfully. Remarkably, the variation in the P content by XPS and the characteristic absorption peak of PA by FTIR made the doping behavior of PA on the surface of different fabrics clear. During the pyrolysis of the original and finished fabric, the maximum decomposition temperature (Tmax) and the maximum emission (Te) of light gas decreased from 380 °C to 290 °C, and the carbon residue content increased from 12.6% to 39.2% at 700 °C, which indicated that the in situ polymerization of aniline doped with PA resulted in the superior flame-retardant property of the fabric. This work provides a green method and basis for the preparation of multi-functional textiles, thus improving the added value of textiles.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 14
·期 1
·76
·
IF 5.3
Ziqi Lv,Kai Ren,Tao Liu,Yunyan Zhao,Zhonghua Zhang,Guicun Li
The rupture of a micro/nano container can trigger the release of repair agents and provides the coating with a self-healing and anti-corrosion effect. However, the defect and inhomogeneity of the coating, produced by the rupture of the micro/nano container, may weaken its anti-corrosion performance. This study reports a rare protection mechanism, which optimizes the space occupying of zirconium phosphate, and the de-doping peculiarity of polyaniline without the rupture of the micro/nano container. Polyaniline/α-zirconium phosphate composites were constructed through in situ oxidation polymerization. Repair agents were added in the form of doped acids. According to the different repair agents in polyaniline/α-zirconium phosphate composites (citric ion, tartaric ion and phytic ion), the performance and protection mechanism of the composites were researched. Polyaniline/α-zirconium phosphate coating (with phytic ion) shows an excellent self-healing anti-corrosive effect, due to the large spatial structure and abundant chelating groups of the precipitation inhibitor. Considering the anti-corrosive application, the developed polyaniline/α-zirconium phosphate composite has a far-reaching influence on marine development.Keywords:polyaniline;α-zirconium phosphate;phytic acid;anti-corrosion;self-healing
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Xiaodong Pei,Hailong Gao,Cenyao Shang,Junxia Huang,Mengting Ge,Huifang Xie,Yanfang Feng,Bingyu Wang
The rare earth metal element lanthanum (La) possesses carcinogenic, genotoxic, and accumulative properties, necessitating urgent development of an efficient and cost-effective method to remove La. However, current sorbents still encounter challenges such as poor selectivity, low sorption capacity, and high production costs. This study therefore proposes a promising solution: the creation of phytic acid–assisted sludge hydrochars (P-SHCs) to eliminate La from water and soil environments. This method harnesses phytic acid's exceptional binding ability and the economical hydrothermal carbonization process. P-SHCs exhibit robust sorption affinity, fast sorption kinetics, and excellent sorption selectivity for La when compared with pristine hydrochars (SHCs). This advantage arises from the remarkable binding ability of phosphate functional groups (polyphosphates) on P-SHCs, forming P-O-La complexes. Moreover, P-SHCs demonstrate sustained sorption efficiency across at least five cycles, with a slight decrease attributed to the loss of phosphorus species and mass during recycling. Furthermore, P-SHCs demonstrated superior economic feasibility, with a higher estimated cost-benefit ratio than that of other sorbents. Our study further validates the exceptional passivation capability of P-SHCs, showcasing relative stabilization efficiency ranging from 37.6 % to 79.6 % for La contamination. Additionally, acting as soil passivation agents, P-SHCs foster the enrichment of specific soil microorganisms such as Actinobacteria and Proteobacteria, capable of solubilizing phosphorus and resisting heavy metals. These findings present novel ideas and technical support for employing P-SHCs in combatting environmental pollution stemming from rare earth metals.
研究领域:
环境科学
·
材料科学
·
土壤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Wenke Liu,Qingwei Qin,Hailin Zhang,Xing Chen,Ling Luo,Guangqiang Li,Shili Zheng,Ping Li
The conventional neutralization method for removing impurities Fe(III) and Al(III) from spent Li-ion battery (LIB) leaching solutions has encountered problems of low impurity removal efficiency or high loss of valuable metals. In this study, highly selective and effective separation of Fe(III) and Al(III) from spent LIB leaching solutions was achieved by the precipitation–complexation technology. It was found that almost all Fe(III) together with most of the Al(III) could be removed by preferential precipitation using NaHCO3 neutralization under an equilibrium pH of 3.3 at 95 °C. Phytic acid, as a selectively complexing agent, was then introduced to completely remove the residual Al(III) from Fe-removed solutions with an Al/PA molar ratio of 3:1 at 60 °C. As a result, more than 99.5% Fe(III) and 97.08% Al(III) could be removed from the actual solutions, with a total loss of Ni, Co, Mn, and Li of only 1.1%. Furthermore, the obtained Al-phytates could be decomposed to form Al(PO3)3 products at 1000 °C. The whole process not only realized the efficient removal of Al(III) and Fe(III) at low pH with minimal loss of Ni, Co, Mn, and Li but also reduced the emission of wastes and utilized the Al resources.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yunlong Qi,Tiezheng Tong,Song Zhao,Wen Zhang,Zhi Wang,Jixiao Wang
Mineral scaling and organic fouling are challenging and co-existing issues that compromise membrane performance in reverse osmosis (RO), but membrane materials possessing both scaling and fouling resistance have not been achieved so far. In this study, thin-film composite (TFC) polyamide membranes were modified with multilayered Ferric-phytic acid (PhA) complexes using layer-by-layer (LbL) assembly, which achieves simultaneous resistance against both silica scaling and BSA fouling. The Ferric-PhA complexes enhanced both hydrophilicity and negative charge, while decreasing the surface roughness of the TFC membrane . The Ferric-PhA assembled membranes exhibited excellent resistance against both individual silica scaling and bovine serum albumin (BSA) fouling in RO desalination, with an increase of layer number resulting in improved membrane performance. The Ferric-PhA assembled membranes further showed remarkably less flux decline compared to the pristine TFC membrane when silica scaling and BSA fouling co-existed. The favorable membrane surface properties imparted by Ferric-PhA complexes reduced the membrane interactions with both silica scalants and BSA foulants effectively, resulting in the exceptional and simultaneous scaling and fouling resistance. Our work demonstrates that it is feasible to achieve dual functions of scaling and fouling resistance of RO membranes by smart surface modification.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）