JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Huikai Shao,Liang Lai,Dongsheng Xu,Jacques Crommen,Qiqin Wang,Zhengjin Jiang
In this study, to selectively enrich N -glycans from complex biological samples, a novel Zr(IV) modified adenosine triphosphate (Zr(IV)-ATP) functionalized monolith was prepared through a facile approach. Well-defined macroporous structure was observed in the ATP functionalized monolith, which allows rapid mass transfer under low backpressure and is beneficial for the enrichment of N-glycans. After being modified with Zr(IV), the resulting Zr(IV)-ATP functionalized monolith could selectively capture N -glycans through the specific interactions between the sulfonate groups of 1-aminopyrene-3,6,8-trisulfonic acid (APTS) labeled N -glycans and Zr(IV). An APTS labeled maltooligosaccharide ladder was used to optimize the enrichment conditions for APTS labeled N -glycans, and capillary electrophoresis (CE) coupled with laser-induced fluorescence (LIF) detector was employed to evaluate the enrichment efficiency. The results show that the APTS labeled maltooligosaccharides could be enriched under the selected conditions and the signal amplify factors of the maltooligosaccharides were between 7.4 and 19.5 with RSDs for reproducibility from 4.0% to 8.3% (n = 3). Finally, the proposed method was successfully used for the enrichment and detection of N -glycans released from Ribonuclease B.
研究领域:
分析化学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2021
·
IF 3.196
Qi Yao,Ruifeng Zhan,Hegang Ren,Bo Yang,Ying Yang
Stringent water resources scarcity and severe environmental restriction requires environmentally friendly and efficient scale inhibitors exploitation. Functionalization of polyamidoamine dendrimers for scale inhibitor was performed using 2-phosphate-1, 2, 4-butane tricarboxylic acid (PBTCA) and succinic anhydride (SA). In this study, PBTCA modified polyamidoamine dendrimers (PAMAM-1), SA modified first and second generation polyamidoamine dendrimers (CAMAM-1 and CAMAM-2) are prepared. Static scale inhibition method is employed to assess the scale inhibition efficiency of linear low molecular polyacrylic (LPAA), PBTCA, PAMAM-1, CAMAM-1 and CAMAM-2 against CaCO 3 and CaSO 4 . The results show that carboxyl terminated polyamidoamine dendrimers has excellent scale inhibition performance comparable to PBTCA and PAMAM-1. Compared to LPAA and PBTCA, dendritic structure can effectively improve the scale inhibition performance of the scale inhibitor. Furthermore, the scale inhibition performance enhances with increasing generation of carboxyl-terminated polyamidoamine dendrimer. The inhibition efficiency of CAMAM-2 against CaCO 3 and CaSO 4 is about 96.3% and 95.2% at a concentration of 10 mg/ L. Moreover, The CAMAM-2 performs above 85% scale inhibition at Ca 2+ concentration is 4000 mg/L and 90% scale inhibition at border pH 5–9. The FT-IR, XRD and SEM-EDX results show that the CaCO 3 changes from stable calcite to metastable aragonite and vaterite, and the needle like structure of CaSO 4 is destroyed to small crystals. CAMAM-2 only occupies the crystallization site and distorts the lattice of calcium scale in the crystal growth process rather than adsorb on the final crystal surface. This paper provides data support for the application of phosphate or carboxyl terminated polyamidoamine dendrimer in scale inhibition.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 20
·
IF 1.86
Wei Qian,Chunhui Shen,Shanjun Gao,Jingluan Xiang
Phosphonic acid functionalized siloxane crosslinked with 3-glycidoxypropyltrimethoxysilane (GPTMS) grafted polybenzimidazole (PBI) membranes are prepared by sol–gel process. The structure of the membranes is characterized by Fourier-transform infrared spectroscopy and X-ray diffraction spectroscopy. SEM images of the membranes show that the membranes are homogeneous and compact. The crosslinked membranes exhibit excellent thermal stability, chemical stability and mechanical property. The proton conductivity of the crosslinked membranes increases by an order of magnitude over range of 20 °C to 160 °C under anhydrous condition, which can reach 3.15 × 10 −2 S cm −1 at 160 °C under anhydrous condition. The activation energy of proton conductivity for membranes decreases with increase of PBI, because the formation of hydrogen bond network between the phosphonic acid and the imidazole ring can enhance the continuity of hydrogen bond in the membrane. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44818.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Chengyu Sun,Yihao Ji,Wenyan Huang,Fuli Deng,Yi Zhang
The recovery of rare earth elements from mineral wastes is extremely critical for the soaring global demand due to their unique roles and resource scarcity. In this work, the defective phosphoric acid functionalized UiO-66-COOH (UiO-66-COOH-OP-ST2) was prepared via the successive phosphoric acid functionalization and defect modulation procedures towards UiO-66-COOH. The adsorption results disclosed that maximal adsorption capacities of UiO-66-COOH-OP-ST2 and phosphoric acid functionalized UiO-66-COOH (UiO-66-COOH-OP) were found to be 132.76 and 83.11 mg/g at pH = 6, respectively. Adsorption kinetics curves and isotherms revealed that the adsorption process was consistent with pseudo second order kinetic model and Langmuir isothermal model. Furthermore, UiO-66-COOH-OP-ST2 can maintain 91.74 % of initial adsorption capacity after five consecutive adsorption–desorption cycles, and exhibit no significant changes in the XRD patterns, demonstrating an excellent recycling stability. In addition, the adsorption mechanism elucidated that the elevated adsorption performance was mainly attributed to the electrostatic attraction and complex interaction between the O sites and Yb(III) based on EDS and XPS analysis. This work efficiently improved adsorption performance of metal organic frameworks after simultaneously grafting functional groups and creating defective sites without affecting their stabilities.
研究领域:
环境化学
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材料科学
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无机化学
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吸附分离
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稀土元素回收
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Kuirong Feng,Pengyun Zhao,Lingxin Meng,Na Li,Fenglong Chen,Jiayin Wang,Jingmei Xu
In this paper, we successfully synthesize phosphoric acid functionalized graphene oxide (PGO) based on acid modification of graphene oxide. The composite membrane is further prepared by adding PGO into sulfonated poly(aryl ether ketone sulfone) containing carboxyl groups matrix (C-SPAEKS). The PGO as well as the composite membranes were characterized by a series of tests. The prepared composite proton exchange membranes (PEMs) have good mechanical and electrochemical properties. Compared to the C-SPAEKS membrane, the best composite membrane has a tensile strength of 40.7 MPa while exhibiting superior proton conductivity (110.17 mS cm–1 at 80 °C). In addition, the open-circuit voltage and power density of C-SPAEKS@1% PGO are 0.918 V and 792.17 mW cm–2, respectively. Compared with C-SPAEKS (0.867 V and 166 mW cm–2), it can be seen that our work has a certain effect on the improvement of the single cell performance. The above results demonstrate that the functionalized graphene oxide has greatly improved the electrochemical performance and even the overall performance of PEMs.
研究领域:
材料科学
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能源工程
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电化学
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产品关联
DOI
PubMed
高影响因子
SOLID STATE IONICS
·
2016
·
IF 2.38
Baohua Yue,Guangbo Zeng,Yepei Zhang,Sheng Tao,Xiaoming Zhang,Liuming Yan
The synergetic proton conducting effect was observed in an acid-base composite composed of phosphonic acid functionalized polysulfone (PSF-PA) and triazolyl functionalized polysulfone (PSF-CH 2 -iPrOHTri), with three orders of magnitude improvement compared to that of the acidic or basic component. The maximum proton conductivity of 42.71 mS cm − 1 at 100 °C and 90% RH was observed in PSF-PA/PSF-CH 2 -iPrOHTri composite membrane composed of 75.0% PSF-CH 2 -iPrOHTri. In addition, the acid-base composite membrane showed higher thermal and oxidative stability , reduced hydrophilicity and methanol permeability , significantly improved mechanical strength . For the hydrated membranes of PSF-PA or PSF-CH 2 -iPrOHTri, the tensile strengths showed significant degradation with values only about halves of the dry membranes. On the other side, the tensile strength of the acid-base composite composed of 75.0% PSF-CH 2 -iPrOHTri showed only slight drop from 35.52 MPa to 30.59 MPa.
研究领域:
材料科学
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燃料电池技术
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DOI
高影响因子
SOLID STATE IONICS
·
2019
·
IF 2.886
Xi Zhu,Chunhui Shen,Shanjun Gao,Huaiyang Jin,Xiangze Cheng,Chenliang Gong
A series of high-temperature proton exchange membranes were prepared by incorporating phosphonic acid functionalized siloxane synthesized from Amino Trimethylene Phosphonic Acid (ATMP) and 3-Aminopropyltriethoxysilane (APTES) into cross-linked 1-Methylimidazole-functionalized poly(2,6-dimethyl-1,4-phenyleneoxide) (PPO) backbone. The structural characteristics of membranes were investigated using FT-IR, 1 H NMR and XRD , indicating that ATMP and backbones of membranes were successfully immobilized into cross-linking Si-O-Si networks formed by hydrolysis-polycondensation of APTES. The resultant membranes named as HTM-X exhibited superior oxidative resistance, mechanical properties and dimensional stability, even the thermal stability was up to 210 °C. The proton conductivities of membranes were also measured under different temperature. The result showed that HTM-15 membrane, whose content of phosphonic acid functionalized siloxane was 15 wt%, possessed the highest proton conductivity of 8.48 × 10 −2 S cm −1 at 160 °C and low relative humidity (5%) with the contribution of dual proton transfer channels of acid-base pairs and continuous hydrogen bond networks. Therefore, this novel membrane acts as a potential candidate for proton exchange membranes operating at elevated temperature.
研究领域:
材料科学
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化学工程
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能源技术
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产品关联
DOI
高影响因子
Inorganics
·
2025
·Vol. 13
·期 9
·296
·
IF 3
Ming Huang,Shunyan Ning,Juan Liu,Lifeng Chen,Mohammed F. Hamza,Yuezhou Wei
This work develops a novel phosphate-functionalized extraction resin (HEHEHP + Cyanex272)/SiO2-P via the vacuum impregnation method for efficient separation of light rare earth element impurities from lanthanum (La3+) in nitric medium through synergistic extraction. Batch experiments have demonstrated superior adsorption selectivity toward impurity ions over La3+in a pH 4 nitric acid solution. Column studies confirmed exceptional performance under ambient conditions, achieving a lanthanum treatment capacity of 120.6 mg/g and over 98% impurity removal, which surpasses most reported values. Notably, this purification process enables direct production of purified La3+solutions through a single-column system without desorption, significantly enhancing efficiency and reducing costs. Mechanistic insights revealed combined ion exchange and coordination interactions between metal ions and P-OH/P=O groups, corroborated by advanced characterization and density functional theory calculations. These findings indicate a higher binding affinity of light rare earth compared with La3+. This strategy provides a scalable approach for ultra-high-purity lanthanum compound production in advanced optical and electronic applications.
研究领域:
湿法冶金
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稀土元素分离
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材料科学
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分离技术
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环境化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Yun Liao,Meng Wang,Dajun Chen
In the present work, we reported the preparation of a highly porous phosphate-functionalized graphene (HGP) hydrogel electrode material by a two-step process for uranium (U(VI)) electrosorption. The extra pores were pre-created on graphene nanosheets by a simple H 2 O 2 etching reaction, and then the as-formed holy graphene nanosheets (HG) were assembled into a 3D macrostructure using phytic acid as both gelator and modifier. The interconnected 3D network structure with the hierarchical pores, as well as the abundant phosphate groups , endowed the HGP hydrogel with superior wettability and electrochemical properties compared to pristine graphene. From the results of electrosorption experiments towards U(VI), the kinetics equilibrium of HGP electrode could be reached within 21 min, and its maximum adsorption capacity was up to 545.7 mg g −1 at 1.2 V and pH 5.0. Furthermore, the HGP electrode showed high selectivity towards U(VI) in the presence of other competitive metal ions . Meanwhile, it also exhibited the feasibility of regeneration with an acceptable reduce of 7.5% in removal ratio after six cycles.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2023
·
IF 4.1
Peiying Yin,Yanli Dong,Xin Zhou,Qianqian Wang,Shuofeng Li,Chun Wang,Lin Hao,Zhi Wang,Qiuhua Wu
There is an urgent need to prepare advanced functional materials for extraction and enrichment of trace organic pollutants from different samples. In this work, two novel phosphate-functionalized porous organic polymers (DBP-POP and DPP-POP) were synthesized for the first time. Compared with phosphate-free counterpart, both phosphate-functionalized POPs showed excellent adsorption performance for the neonicotinoids due to the hydrogen bonding, π-π interaction and hydrophobic interaction. For ease of separating the sorbent from solution, magnetic DBP-POP (M-DBP-POP) was further prepared as sorbent to extract neonicotinoids from environmental water and lemon juice samples prior to their determination by high performance liquid chromatography-ultraviolet detection. Under optimal conditions, the detection limits (S/ N = 3) of the method were 0.01–0.08 ng mL −1 for water and 0.03–0.10 ng mL −1 for lemon juice. The recoveries were in the range of 80.0% to 113.0% with relative standard deviation less than 10.6%. This work demonstrated the feasibility of phosphate-functionalized POPs for adsorption applications.
研究领域:
环境科学
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分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 98
·95469-95475
·
IF 3.289
Lingli Bu,Jingdong Peng,Huanjun Peng,Shaopu Liu,Huan Xiao,Dan Liu,Ziyu Pan,Yu Chen,Fang Chen,Yan He
Chromium(VI) is proved to be highly carcinogenic and mutagenic, thus sensitive and rapid sensors for monitoring Cr(VI) are in urgent demand. In this work, a facile fluorescent assay for the sensitive and selective detection of Cr(VI) was proposed based on static quenching combined with inner filter effect (IFE) using phosphate functionalized carbon dots (PCDs) as nanoprobes. A good linear quenching was observed in the range of 1.0–400 μM with a detection limit of 0.24 μM (σ/S = 3) under the optimized conditions. The nanoprobe was employed for detecting Cr(VI) in real water samples including river water and tap water with satisfactory recovery. Moreover, with the addition of Cr(VI), the color changes of PCDs can be easily observed by the naked eye under a UV lamp. Based on this, Cr(VI) test papers were fabricated for spot quick detection of Cr(VI).
研究领域:
分析化学
·
环境科学
·
纳米技术
✓ 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）