MICROCHIMICA ACTA
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2019
·Vol. 187
·期 1
·1-9
·
IF 5.479
Zhang Wanqing,Fan Shumin,Li Xinli,Liu Shanqin,Duan Dawei,Leng Leipeng,Cui Chengxing,Zhang Yuping,Qu Lingbo
A glassy carbon electrode (GCE) was modified with a composite prepared from phytic acid, polypyrrole and a ZIF type metal-organic framework (PA/PPy)/ZIF-8@ZIF-67). The nanocomposite was prepared by in-situ chemical polymerization in the presence of ferric chloride and subsequently functionalized with PA to form PA/PPy/ZIF-8@ZIF-67. The materials were characterized by XRD, FT-IR, BET, XPS, SEM and TEM. The modified GCE was applied to individual and simultaneous detection of Pb(II) and Cu(II), with peak voltages of −0.6 and − 0.1 V, respectively (vs. SCE). The amount of PPy, the ZIF-8@ZIF-67 concentration, polymerization potential, polymerization time and pH value were optimized. Under optimized conditions, the calibration plots have two linear ranges. These are from 0.02 to 200 μM and from 200 to 600 μM for Pb(II), and from 0.2 to 200 μM and 200 to 600 μM for Cu(II). The detection limits are 2.9 nM and 14.8 nM, respectively. Simultaneous detection of Pb(II) and Cu(II) is also demonstrated. The good performance of the electrode is attributed to the large surface area of ZIF-8@ZIF-67, the good electrical conductivity of PPy, and the metal complexation power of PA. The modified GCE was successfully applied to the determination of Pb(II) and Cu(II) in real samples and gave satisfactory recoveries.
Schematic presentation of the construction process of PA/PPy/ZIF-8@ZIF-67/GCE sensor, and the mechanism of Pb(II) and Cu(II) at the prepared sensor.
研究领域:
分析化学
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材料科学
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环境科学
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2016
·
IF 2.76
Hui You,Jiucun Chen,Chao Yang,Liqun Xu
In this paper, the wheat straw (WS) was modified using phytic acid (PA) to improve adsorption capacity for selective removal of methylene blue dye (MB, cationic dye). The morphology, structure and surface state of the modofied wheat straw using phytic acid (PA-WS) were characterized using scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS), respectively. The effects of pH, MB concentration, different temperatures and contact time on adsorption experiments were investigated. The maximum adsorption quantity of PA-WS for MB was up to 205.4 mg g −1 at 25 °C. Equilibrium adsorption isotherm data indicated a good fit to the Langmuir isotherm model and the adsorption kinetic was well-fitted by the pseudo-second-order model and the Elovich model. Regeneration study revealed that PA-WS can be reused effectively. These results indicated that PA-WS was a promising adsorbent for the removal of cationic dyes.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Chong Cai,Ran Wang,Shufeng Liu,Xiaoya Yan,Lexin Zhang,Mingli Wang,Qi Tong,Tifeng Jiao
In recent years, new family of two-dimensional (2D) transition metal carbide and carbonitrides-MXene has become critical materials due to their excellent structure and performance. Herein, we have investigated the synthesis of a new MXene-based composite material for efficient dye adsorption in sewage treatment, via a facile hydrothermal method . The characterization of the phytic acid (PA)-MXene composites showed that new rod-like Ti(OH)PO 4 components appeared in the hydrothermal process. In addition, compared with the original MXene , the prepared PA-MXene composite exhibited enhanced adsorption properties for the model dyes MB and RhB, and the adsorption capacity of the PA-MXene composite on MB remained at about 85 % after 12 cycles, indicating important potential as an adsorbent material in wastewater treatment .
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
高影响因子
FITOTERAPIA
·
2014
·
IF 2.216
Yan Xie,Huilin Luo,Jingze Duan,Chao Hong,Ping Ma,Guowen Li,Tong Zhang,Tao Wu,Guang Ji
Aim Total flavones of Hippophae rhamnoides L. (TFH) have a clinical use in the treatment of cardiac disease. The pharmacological effects of TFH are attributed to its major flavonoid components, isorhamnetin , kaempferol , and quercetin . However, poor oral bioavailability of these flavonoids limits the clinical applications of TFH. This study explores phytic acid (IP 6 ) enhancement of the oral absorption in rats of isorhamnetin, kaempferol, and quercetin in TFH. Methods In vitro Caco-2 cell experiments and in vivo pharmacokinetic studies were performed to investigate the effects of IP 6 . The aqueous solubility and lipophilicity of isorhamnetin, quercetin, and kaempferol were determined with and without IP 6 , and mucosal epithelial damage resulting from IP 6 addition was evaluated by MTT assays and morphology observations. Results The P app of isorhamnetin, kaempferol, and quercetin was improved 2.03-, 1.69-, and 2.11-fold in the presence of 333 μg/mL of IP 6 , respectively. Water solubility was increased 22.75-, 15.15-, and 12.86-fold for isorhamnetin, kaempferol, and quercetin, respectively, in the presence of 20 mg/mL IP 6 . The lipophilicity of the three flavonoids was slightly decreased, but their hydrophilicity was increased after the addition of IP 6 in the water phase as the logP values of isorhamnetin, kaempferol, and quercetin decreased from 2.38 ± 0.12 to 1.64 ± 0.02, from 2.57 ± 0.20 to 2.01 ± 0.04, and from 2.39 ± 0.12 to 1.15 ± 0.01, respectively. The absorption enhancement ratios were 3.21 for isorhamnetin, 2.98 for kaempferol, and 1.64 for quercetin with co-administration of IP 6 (200 mg/kg) in rats. In addition, IP 6 (200 mg/kg, oral) caused neither significant irritation to the rat intestines nor cytotoxicity (400 μg/mL) in Caco-2 cells. Conclusions The oral bioavailability of isorhamnetin, kaempferol, and quercetin in TFH was enhanced by the co-administration of IP 6 . The main mechanisms are related to their enhanced aqueous solubility and permeability in the presence of IP 6 . In summary, IP 6 is a potential absorption enhancer for pharmaceutical formulations that is both effective and safe.
研究领域:
药理学
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药剂学
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营养保健品
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DOI
PubMed
高影响因子
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
·
2021
·Vol. 35
·期 22
·e9194
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IF 2.419
Saisai Yu,Chenggang Cai,Yan Wang,Chunqi Sheng,Kezhi Jiang
Rationale Phytic acid (PA) is both a naturally occurring nutrient and a widely used food additive for conferring antioxidant properties to food. PA can be found in baby foods and it is essential to monitor PA content due to its anti-nutritional properties when present in excess. Current methods for determining PA content are unsatisfactory because interference from inositol phosphates and inorganic phosphates complicates PA quantification. Methods Baby foods were extracted using aqueous HCl, and the extractant was subjected to derivatization with (trimethylsilyl)diazomethane after de-metalation using a cation exchange resin. The PA derivative was quantified using liquid chromatography–mass spectrometry (LC/MS/MS) with a multi-response monitoring mode ( m / z 829 to 451). Results The linearity of the developed analytical method ranged from 10 to 1000 ng/mL for PA with R 2 > 0.999. Reasonable reproducibility was obtained with an intraday relative standard deviation (RSD; N = 5) of 4.5% and an interday RSD ( N = 5) of 5.7% at a concentration of 10 ng/mL. The developed method was successfully applied to determine PA content in various baby foods, with PA recovery between 90.6% and 119.8%. Conclusions A robust and sensitive method for the determination of PA in baby foods has been developed by methyl esterification with (trimethylsilyl)diazomethane and using LC/MS/MS analysis. The established method showed good anti-interference and precision, and it has been applied for the determination of PA in various baby foods.
研究领域:
分析化学
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食品科学
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营养学
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产品关联
DOI
PubMed
高影响因子
FIRE TECHNOLOGY
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2022
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IF 3.605
Jiang Haoran,Jiang Yong,Fan Rujia,Zhu Xianli
Abstract A new non-toxic, clean, and effective dry water (DW) nanomaterial is synthesized, and its extinguishing performance is characterized for pool fire. The nanomaterial reaches up to 93% water content due to its special core–shell structure. Phytic acid (PA) is used to functionalize DW to obtain DW/PA because of its biocompatibility and phosphorus-rich properties. The results of the Fourier transform infrared, X-ray photoelectron spectroscopy, thermal gravity analyzer, and optical microscope successfully verify the preparation of DW/PA samples. The DW/PA samples are cylindrical particles with a length of 100–200 μm and have excellent fluidity, with a repose angle of about 29°. The centrifugation and water loss rate tests indicate that the samples have appropriate mechanical stability and are suitable for storage in closed spaces. The extinguishing efficiency of DW/PA samples is characterized using a fire-extinguishing experiment designed by international standards. The average extinguishing time and consumption of DW/PA samples are reduced by 77.08% and 77.67%, respectively, comparing with commercial ABC dry powder-extinguishing agents. Moreover, fire-extinguishing efficiency is positively correlated with PA content. According to experimental results and established theories, the extinguishing mechanism of DW/PA samples is discussed and divided into three parts: chemical inhibition, the cooling effect, and the asphyxiation effect. Graphical Abstract
研究领域:
材料科学
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消防工程
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化学工程
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DOI
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 2
·1087-1102
·
IF 6.123
Li Chunyu,Hou Zehua,Li Pan,Zhang Guomin,Bai Liangjiu,Wang Wenxiang,Chen Hou,Yang Huawei,Yang Lixia
Cellulose nanocrystals (CNCs) have been widely used in the surface modification and construction of nanocomposites due to their excellent surface activity and high tensile strength. In this manuscript, nanocomposite hydrogels were prepared by implanting poly(glycidyl methacrylate)-modified CNCs (CNCs@PGMA) and biomass phytic acid (PA). After extracting CNCs from microcrystalline cellulose, PGMA was successfully grafted on the surface of CNCs by surface-initiated Activator Generated by Electron Transfer Atom Transfer Radical Polymerization (SI-AGET ATRP). With the assistance of PA, the reversible hydrogen bonding interaction between the internal structures of the matrix was promoted to construct the CNCs@PGMA/PA self-healing nanocomposite hydrogels. The obtained hydrogels by using CNCs@PGMA and PA as additives have excellent mechanical properties (tensile strength of 1.39 MPa) and self-healing ability (91.4% after 6 h). This study develops a facile method for the preparation of nanocomposite hydrogels with excellent self-healing properties. Graphical abstract
研究领域:
材料科学
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化学工程
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纳米技术
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DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Han Wang,Lu Chen,Shuang Wu,Weiping Jin,Wangyang Shen,Zhongze Hu,Wenjing Huang,Gang Liu
Rice bran oil bodies (RBOBs) are one of the most exploited functional components from rice bran by-products and are predominantly based on oleosin stabilization. In this study, we explored the effects of different concentrations of added (-)-epicatechin, ferulic acid, and phytic acid on the RBOBs stability. The results revealed that the incorporation of all three natural phytoconstituents could reduce the RBOBs particle size and increase emulsifying properties, demonstrating increasing surface hydrophobicity (p < 0.05), and a good antioxidant effect, which was especially obvious with (-)-epicatechin incorporation. Fourier transform infrared (FT-IR) spectroscopy data demonstrated that these three small molecule substance classes can modify with oleosin on RBOBs surface by covalent and noncovalent effects. Raman spectroscopic analysis illustrated that the vibrational modes of disulphide bonds in oleosin were modified by these three plant natural ingredients. The interactions between the three phytoconstituents and the model protein were investigated by molecular docking experiments.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Ying-Qi Dong,Wei-Bin Bai,Wen Zhang,Yu-Cai Lin,Rong-Kun Jian
Bio-based hydrophobic coating modified cotton fabrics with durable flame retardancy are of high interest in the application of oil-water separation for not only avoiding the use of hazardous substances but also improving the fire safety during use. Herein, phytic acid@Polyurushiol‑titanium complex coated cotton fabric was developed using the facile dip-coating method involving the sequential immersion in the solution of poly(ethyleneimine), phytic acid , titanium oxide, and urushiol. The underlying coating accommodated abundance of phytic acid, which imparted excellent flame retardancy to cotton fabric, and the top coating composed of the polyurushiol‑titanium complex endowed cotton fabric with high hydrophobicity that the water contact angle (WCA) was up to 149.8°. The hydrophobicity also guaranteed effective protection of the underlying phytic acid against chemical solvents and abrasion. Besides, the hydrophobic coating allowed cotton fabric for good self-cleaning and effective oil-water separation. Therefore, the preparation of phytic acid@polyurushiol‑titanium complex coated cotton fabric offers a promising approach to construct durable biomass-coated cellulose-based fabric with multifunctionality.
研究领域:
材料科学
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环境科学
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纺织工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hao Lei,Ning Pan,Hao Zou,Xiaoqiang Wang,Xianguo Tuo
Efficient removing uranium (U(VI)) from highly acidic environment remain a great challenge for the adsorbent. Herein, a novel hollow phytic acid-based hybrid material (P(Cr)E-7) was synthesized by a mild facile one-pot self-assembly method without template choosing Cr 3+ , phytic acid (PA) and ethylenediamine (EDA) as the inorganic and two organic building blocks. P(Cr)E-7 was employed for U(VI) capture in highly acidic wastewater. Thanks to the flexible segment assembled from EDA and PA, and the strong affinity of PA to U(VI), the maximum adsorption capacity of P(Cr)E-7 for U(VI) reached 282.8 mg/g under the condition of pH = 1.0 in static adsorption experiment. Simultaneously, P(Cr)E-7 showed the selectivity efficiency of almost 100 % for An-Ln and pH-dependent selectivity efficiency of 60 % for U(VI) in multi-ions solution with pH = 1.0. Moreover, P(Cr)E-7 showed excellent stability in 0.1 M HNO 3 and reusability after three cycles at pH = 1.0 benefiting from stable segment from coordination of Cr(III) and PA. Additionally, the SEM, XRD , FTIR, and XPS analysis revealed the adsorption mechanism that U(VI) exchanges with positively charged EDA + /EDA 2+ in P(Cr)E-7 to obtain preferred coordination geometry and ligand environment and further coordinates with P-OH/P = O in PA. This study addresses the practical application of effective adsorption of uranium in highly acidic nuclear industrial wastewater and illustrated a novel material design strategy of adsorbents for uranium extraction.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ACS ES&T Water
·
2023
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IF 5.3
Hao Lei,Shuangshuang Huang,Ning Pan,Hao Zou,Xiaoqiang Wang,Xianguo Tuo
The efficient adsorption and removal of U(VI) from nuclear wastewater is fetching growing interest due to its importance for the ecological environment and human health. In this study, we report a facile ionic self-assembly method to synthesize a phytic acid-based material denoted PE-x using phytic acid and ethylenediamine. PE-x was applied to remove U(VI) from a highly acidic aqueous solution with pH = 1.0. In batch adsorption experiments, PE-x showed fast removal kinetics for U(VI) with an equilibrium time around 10 min, excellent selectivity for An-Ln and U(VI) with a maximum selectivity of 97.8% and 76.2%, and a remarkable maximum adsorption capacity of 689.7 mg/g toward U(VI). Additionally, PE-x exhibited a considerable adsorption capacity of 282.6 mg/g in the fixed bed column test. The adsorption mechanism was investigated by using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The results indicate a unique mechanism based on the reconstruction of the self-assembly framework involving U(VI) building blocks driven by positively charged species exchange. This study provides new insights and strategies for the design of enhanced uranium adsorbents under highly acidic conditions and extends the potential practical application of phytic acid for uranium capture from radioactive wastewater.
研究领域:
环境科学
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放射化学
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材料科学
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产品关联
DOI
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 10
·4062-4070
·
IF 8.1
Zeng Lingjun,Liu Bo,Gao Guanghui
Conductive hydrogels as wearable sensors meet the basic requirements of mechanical flexibility and intelligent sensing. However, they are often hampered by problems such as the incompatibility between favorable mechanical properties and high conductivity, inferior antimicrobial ability and difficulty in recycling. Herein, highly conductive and physically cross-linked polyvinyl alcohol/chitosan-phytic acid (PVA/CS-PA) hydrogels were developed by a facile freeze-thaw method. The hydrogen bonding and electrostatic interaction between PA and matrix of CS and PVA endow hydrogels with not only moderate mechanical properties and high degree of ductility, but also meaningfully recyclable characteristics. In addition, the hydrogel exhibits superior conductivity (~0.125 S cm −1 ) and antimicrobial activity, benefiting from the ionic conductivity and antibacterial capacity of PA molecules. These exceptional properties enable the hydrogel-based wearable sensors to exhibit strain-sensitive properties (a gauge factor of 7.21 under strains of 200%–420%), which could monitor various activities of human body. More interestingly, the PVA/CS-PA sol ink could be transformed into a gel state in an ice bath, which would meet the need of flexible circuit and make wearable sensors more portable.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）