APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Wenwen Tian,Dekang Cheng,Shan Wang,Chuanxi Xiong,Quanling Yang
Incorporating manganese dioxide (MnO 2 ) with reduced oxide graphene (RGO) holds great potential as favourable supercapacitor electrodes for energy storage applications. In order to improve the adhesive strength and stability, we synthesized a phytic acid (PA)-linked MnO 2 /RGO aerogel (MnO 2 /P-RGO) through a simple self-assembled hydrothermal and freeze-drying method. Herein, PA as a bridge could accelerate the firm immobilization of MnO 2 on RGO sheets to synthesize the composite aerogel with a three-dimensional (3D) layered porous structure. The 3D MnO 2 /P-RGO composite aerogel as a supercapacitor electrode could achieve the high specific capacitance of 645 F g −1 under the current density of 1 A g −1 and 410 F g −1 at 40 A g −1 . Furthermore, the composite aerogel exhibits remarkable long-term stability, 94.9% of the initial capacitance after 10,000 cycles under the high current density of 20 A g −1 . Moreover, the assembled MnO 2 /P-RGO//RGO asymmetric supercapacitor (ASc) shows the maximum energy density of 59.2 W h kg −1 at 1.48 kW kg −1 and could remain 28.8 W h kg −1 at the maximum power density of 57.6 kW kg −1 . Additionally, the MnO 2 /P-RGO//RGO ASc also exhibits excellent long cycling stability with 91.6% of the initial capacitance after 10,000 cycles at 20 A g −1 , indicating its promising practical application for high-efficiency supercapacitors.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2017
·Vol. 184
·期 10
·3773-3779
·
IF 4.58
Wu Juanjuan,Liang Xinyu,Hao Lin,Wang Chun,Wu Qiuhua,Wang Zhi
A nanocomposite (designated as PAG) possessing amphiphilic properties was prepared by a single-step method from graphene oxide and phytic acid, in which phytic acid acts as both an inducer and cross-linking agent. The morphology and microstructure of PAG were characterized by nitrogen adsorption, scanning electron microscopy and transmission electron microscopy. The PAG possess a 3 dimensional network structure with interpenetrated nano- and micropores and represent a viable adsorbent for solid-phase extraction of carbamate pesticides prior to their quantitation by high performance liquid chromatography. Under optimum conditions, the calibration plot is linear in the 0.5 to 80 ng g −1 concentration range in case of apple samples, and in the 1.0 to 80 ng mL −1 range for juice samples. The respective limits of detection (for S / N = 3) are between 0.05 and 0.1 ng g −1 , and between 0.2 and 0.3 ng mL −1 . The PAG has a high adsorption capability, and in our preception it may become a useful adsorbent for the preconcentration of other organic pollutants.
A amphiphilic nanocomposite (prepared from phytic acid and graphene oxide; denoted as PAG) was prepared by a single-step method. Phytic acid acts as both an inducer and cross-linking agent. The PAG was used as an adsorbent to extract carbamates from apple and juice samples.
研究领域:
环境科学
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分析化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2021
·Vol. 139
·期 14
·51910
·
IF 3.125
Lingyun Wang,Yaxin Chen,Jing Luo,Ren Liu
Graphene derivatives are excellent fillers for providing outstanding barrier performance in organic protective coating but no active inhibition property. In this paper, a facile and environmentally friendly strategy is presented to improve the anticorrosion ability of graphene by modifying graphene oxide (GO) with a green corrosion inhibitor derived from nature, phytic acid (PA). The as-prepared PA modified GO (PAGO) thus possesses the passive barrier property and active corrosion inhibition function simultaneously. Employing PAGO as filler, a high-performance waterborne epoxy composite coating (PAGO/WEP) with “barrier + inhibitor” double anticorrosion effect was fabricated. The EIS test results demonstrated that after 21 days of immersion, the impedance modulus of the PAGO/WEP coating did not decrease and still maintained at the initial impedance value. The salt spray tests also demonstrated the significantly enhanced anticorrosion performance.
研究领域:
材料科学
·
腐蚀与防护
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2021
·
IF 5.816
Menghui Liu,Aiqun Kong,Jinli Zhang,Yan Fu,Wei Li
A superhydrophilic Ru-based 3D electrode, denoted as Ru-PA/NF, was fabricated under the assistance of phytic acid (PA) for electrocatalytic hydrogenation of p-Nitrophenol. PA serves as a multifunctional modulator to facilitate the dispersion of active Ru species in porous nickel foam (NF), meanwhile enhance the surface wettability as well as adjust the micromorphology. In alkaline media , the Ru-PA/NF electrode shows the PNP conversion of 94.68% and the PAP selectivity of 99% after 9 h, accompanied by the faraday efficiency (FE) of 73.15%. Over the superhydrophilic Ru-PA/NF the rate constant of PNP conversion into PAP is 2.62-times higher than that over the hydrophobic Ru/NF prepared without the aid of PA, and FE of Ru-PA/NF is 1.28-times higher than Ru/NF. This can be ascribed to intriguing features of Ru-PA/NF involving higher Ru loading, more exposed sites, superior electrolyte wetting along with faster charge transfer rate.
研究领域:
材料科学
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电化学
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环境催化
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产品关联
DOI
高影响因子
Foods
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2022
·Vol. 11
·期 3
·450
·
IF 5.561
Jiaxin Lu,Xiaojing Li,Chao Qiu,David Julian McClements,Aiquan Jiao,Jinpeng Wang,Zhengyu Jin
This study aimed to fabricate food-grade Pickering emulsions stabilized by chitosan-phytic acid-β-cyclodextrin (CS-PA-CD) nanoparticles. The CS-PA-CD nanoparticles were characterized with FITR, XRD, and TGA to prove its successfully crosslinking, then characterized by DLS system and scanning electron microscopy showing the smallest average particle size was 434.2 ± 2.5 nm and it increased with the ratio of PA-CD to CS increasing. Pickering emulsions stabilized by CS-PA-CD nanoparticles was prepared and it showed the best stability at around pH 6. The particle concentration higher than 1.0% (w/v) and the oil fraction above 0.5% (v/v) could reach the emulsion stability. In addition, the Pickering emulsions were stable at various temperature (30–70 °C) and influenced by the certain change of ionic strength (0–500 mM). These CS-PA-CD Pickering emulsions showed great application in the formation of functional foods and pharmaceutical industries.Keywords:chitosan/cyclodextrin;nanoparticles;Pickering emulsions;rheological properties;stability;phytic acid
研究领域:
食品科学与工程
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生物材料学
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产品关联
DOI
PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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2022
·Vol. 128
·期 4
·1-10
·
IF 2.983
Li Lin,Shi Tao,Zhang Yuan,Ma Xiaoyong,Xue Sen,Li Wenyan,Peng Huaqiao,Wei Yongqiang,Zhang Aimin,Zhao Chengshou
Superhydrophobic aluminum alloy is fabricated through a chemical etching combined with surface modification. The surface modification step consists of a cyclic assembly of phytic acid (PA) and a metal ion (Ce or Fe) followed by surface modification with a low-surface-energy material (perfluorooctyltriethoxysilane, PFTS). With the optimized fabrication parameter, the sample integrated with Ce ion, denoted as Al-PA-Ce-PFTS, shows the best superhydrophobicity with CA of 169.6° ± 0.8° and SA of < 1°, followed by the sample integrated with Fe ion, denoted as Al-PA-Fe-PFTS (CA = 164.9° ± 2.1° and SA < 1°). Both samples determine excellent non-wettability. Through studying the dynamic behavior of water droplets on the surfaces of Al-PA-Ce-PFTS and Al-PA-Fe-PFTS, it reveals that both samples show excellent anti-adhesion ability. Electrochemical tests with 3.5 wt.% NaCl solution indicates that the anti-corrosion performance of superhydrophobic aluminum alloy surfaces is much better than that of the untreated aluminum surface. The freezing of water droplets on Al-PA-Ce-PFTS and Al-PA-Fe-PFTS is much slower than that of the untreated aluminum surface. Some water droplets can remain unfrozen at − 5 °C for over 60 min on the surfaces of Al-PA-Ce-PFTS and Al-PA-Fe-PFTS.
研究领域:
材料科学
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表面化学
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腐蚀工程
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2021
·
IF 8.742
Hongli Zhang,Shilin Zhu,Jie Yang,Aijie Ma,Weixing Chen
The water pollution caused by heavy metals is bringing serious damage to public health and environment, and significant efforts have been devoted to explore advanced materials and technologies for eliminating toxic metal ions more efficiently. Herein, a phytic acid (PA)-incorporated polyamide thin-film composite nanofiltration (NF) membrane is constructed though traditional interfacial polymerization and electrostatic assembly of PA with polyethyleneimine . Owing to the high negative charges of PA, the resultant NF membrane exhibits ultrahigh binding affinity for heavy metals cations, and is highly capable of removing heavy metal ions from aqueous solution. As a result, the PA-functionalized NF membrane can reduce Cd 2+ and Pb 2+ concentrations from 500 ppm to the ultralow level of ~0 and 5 ppb, and achieve record-breaking remove rates of 100.000% for Cd 2+ and 99.999% for Pb 2+ . Additionally, the as-prepared NF membrane also delivers excellent long-term stability in continuous 120-h operation, and can be easily regenerated and reused without remarkable fading of the initial Cd 2+ removal rate even after six filtration cycles. This work demonstrates the potential usage of the PA-functionalized NF membrane for serving as a promising platform to eliminate heavy metal ions in waste water.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Dongxue Han,Hongjie Zhao,Lili Gao,Zhihui Qin,Jinming Ma,Yong Han,Tifeng Jiao
In recent years, chitosan has been used as a common raw material to prepare hydrogels for wastewater treatment . In this work, a series of carboxymethyl chitosan/phytic acid (CMCS-PA) composite hydrogels with various amounts of PA were prepared to remove methyl orange (MO) and Congo red (CR) dyes from aqueous solution. The composite hydrogels with well-defined structure were characterized by different techniques. The experimental results revealed that the hydrogel possessed stable porous structure with more wrinkles on the surface due to the formation of intermolecular hydrogen bonding between CMCS and PA during the in-situ polymerization process. More importantly, the optimal adsorption conditions of CMCS-PA were obtained by changing different adsorption factors: ratio of two molecules and pH. And the CMCS-PA (3:1) composite hydrogel presented great adsorption capacity for MO (13.62 mg/g) and CR (8.49 mg/g) at pH = 7 at room temperature . In addition, the hydrogel also showed great adsorption reusability and stability. This work promotes further development in composite hydrogels design and their applications of wastewater treatment.
研究领域:
材料科学
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环境工程
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化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2023
·
IF 9.5
Lei Zhang,Mengyang Hu,Yujun Zhang,Jian Hou,Meizhi Zhang,Chang Gao,Wenming Fu,Hongsen Hui,Quan Liu,Huiying Ding,Zuhui Qin,Hongchang Pei,Hideto Matsuyama
To balance the permeability-selectivity trade-off effect of the polyamide nanofiltration membrane, interfacial polymerization regulation strategy is widely used to optimize the physicochemical structure of the polyamide film. In the present work, the compound additives of phytic acid and ferric chloride were added into the aqueous phase to regulate the interfacial polymerization process. On the one hand, a lot of piperazine monomers will be adsorbed around the phytic acid molecules due to the electrostatic interaction between phosphoric acid groups and amino groups. Meanwhile, the phytic acid molecules and ferric ions can form a complex in the piperazine solution, which results in a low diffusion rate of the other piperazine monomers without adsorbed on the phytic acid and ferric chloride complex due to steric hindrance. The synergistic effect of electrostatic interaction and steric hindrance leads to the optimized nanofiltration membrane with a thinner and looser polyamide structure. The best-performing nanofiltration membrane exhibits an approximately four-fold water permeance (28.4 L m −2 h −1 bar −1 ) compared with the controlled M0 nanofiltration membrane (6.5 L m −2 h −1 bar −1 ) without obviously sacrificing the Na 2 SO 4 rejection (96.9 %). This simple interfacial polymerization regulation strategy provides a novel insight for the preparation of high-performance NF membrane.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2023
·
IF 7
Renjuan Liu,Qiyue Wan,Yinghao Yu,Xu Zhang,Longcheng Liu,Hai Wang,Chengtao Yue
The development and application of new high-efficiency adsorbent materials for efficient removal of uranium (VI) from nuclear wastewater is of great concern for environment protection. In this study, a novel phosphate-rich macroporous carbon foam was designed and synthesized for efficient uranium (VI) adsorption. Bath adsorption was used to evaluate the uranium (VI) adsorption performance of this carbon foam, and the influences of adsorbent dosage, solution pH and ionic strength on adsorption efficiency were studied. The results demonstrated that the carbon foam was effective adsorbent for uranium (VI) and the adsorption efficiency reached 99 % at 30 °C, pH 7.0 and contact time 2.0 h with an adsorbent dosage of 0.25 g L −1 in 100 mg L −1 uranium (VI) solution. The adsorption process follows better with pseudo-second-order model with a coefficient of correlation of 0.9999 and was more consistent with the Langmuir model with the maximum adsorption capacity as high as 1250 mg g −1 . The distribution coefficient of carbon foam for uranium (VI) reached 15 L g −1 which is higher than that for other ions (0.1–4.4 L g −1 ), demonstrating a good adsorption selectivity. Moreover, this material can be recycled for at least 5 times and can be used in fixed-bed adsorption column for dynamic adsorption of uranium from uranium-containing solutions (5 or 50 mg L −1 ) with adsorption efficiencies up to 99 %. This study's results showed the high efficiency of phosphate-rich macroporous carbon foam in uranium (VI) adsorption and highlighted its great potential in efficient removal of uranium (VI) from nuclear wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2023
·
IF 5.9
Zhihua Liu,Shikai Song,Lingbo Dong,Jingze Guo,Jingchao Wang,Shuangmei Tan,Yutong Li,Mei Shen,Shuai Zhao,Lin Li,Zhenxiang Xin
In this work, LBL technology is applied to prepare a bio-based flame- retardant coating (U@PA-Na) by a sequential assembly of positively charged urea (U) and negatively charged sodium phytate (PA-Na) solution in water medium. The U@PA-Na system possess the characters of safety, non-toxic, and high efficiency in flame retardant. The flame retardancy of U@PA-Na is evaluated by the cotton coated with U@PA-Na coatings (COT/U@PA-Na) before and after washing treatment. The limiting oxygen index (LOI), vertical flame test (UL-94), and cone calorimeter test (CCT) composites are measured to evaluate the flame retardancy of COT/U@PA-Na. The LOI value of the COT/U@PA-Na3 composite after washing treatment can still reach 34.6% and pass UL-94 B1 grade, accompanied by damage length less than 150 mm and burning time less than 5s. It shows that U@PA-Na has excellent flame retardancy and water resistance. Cone calorimeter (CCT) measurements show that the peak heat release rate (PHRR) and total heat release (THR) of COT/U@PA-Na3 decreas by about 61% and 74% compared with untreated fabrics. The thermal decomposition time of the treated cotton fabric is significantly delayed, and the peak decomposition temperature (T 1max ) is reduced by about 62°C, while the average residue is improved to about 21% at 650 °C. The image of the cone calorimetric burnt carbon slag shows that the carbon layer of cotton fabric treated by U@PA-Na is very dense, indicating that the synergistic effect of PA and U can promote the formation of a high-quality carbon layer which plays a "barrier effect" to protect the substrate and delay the combustion process. The flammability and forced combustion tests show that the bio-based U@PA-Na flame-retardant system with good washing resistance can significantly improve the flame retardancy of cotton fabric, greatly reducing the fire risk.
研究领域:
材料科学
·
纺织工程
·
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
·
2023
·
IF 5.2
Yanan Wang,Shaoning Shi,Chenglin Yang,Ying Liang,Lixia Yang,Wenxiang Wang,Liangjiu Bai
Nanocomposite hydrogels have been applied in the field of flexible sensors to monitor human body signals. In this manuscript, phytic acid (PA) was successfully adsorbed on the surface of graphene oxide@polydopamine (GO@PDA). The obtained graphene oxide@polydopamine-phytic acid (GO@PDA-PA) was further implanted to the poly acrylic acid (PAA) hydrogels as flexible strain sensors. Dopamine (DA) was self-polymerized on both two sides of GO by mussel-inspired chemistry to synthetize GO@PDA. PA was decorated on the surface of GO@PDA to obtain GO@PDA-PA nanocomposites with Pickering emulsion in oil-in-water (O/W) emulsion. The GO@PDA-PA hydrogels’ self-healing efficiency (98.6%) and mechanical strength (1.77 MPa) were both improved due to the presence of reversible interaction such as hydrogen bond and metal-ligand coordination. The wearable flexible sensors based on the prepared GO@PDA-PA hydrogels have high sensitivity (gauge factor (GF) = 3.3), stability, durability and high response ability. It can detect the sharp movement signals of human body and tiny movement signals such as breathing. The excellent performance of nanocomposite hydrogels is expected to promote the evolution of flexible sensors.
研究领域:
材料科学
·
生物医学工程
✓ 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）