ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Liyuan Wu,Yaxin Liu,Xin Wang,Mengrui Li,Jingya Li,Xiaoran Zhang,Dawen Gao,Haiyan Li
Benzo[a]pyrene is difficult to remove from soil due to its high octanol/water partition coefficient. The use of mixed surfactants can increase solubility but with the risk of secondary soil contamination, and the compounding mechanism is still unclear. This study introduced a new approach using environmentally friendly fatty acid methyl ester sulfonate (MES) and alkyl polyglucoside (APG) to solubilize benzo[a]pyrene. The best result was obtained when the ratio of MES/APG was 7:1 under 6 g/L total concentration, with an apparent solubility (Sw) of 8.58 mg/L and a molar solubilization ratio (MSR) of 1.31 for benzo[a]pyrene, which is comparable to that of Tween 80 (MSR, 0.95). The mechanism indicates that the hydroxyl groups (−OH) in APG form “O–H···OSO2–” hydrogen bonding with the sulfonic acid group (−SO3–) of MES, which reduces the electrostatic repulsion between MES molecules, thus facilitating the formation of large and stable micelles. Moreover, the strong solubilizing effect on benzo[a]pyrene should be ascribed to the low polarity of ester groups (−COOCH3) in MES. Functional groups capable of forming hydrogen bonds and having low polarity are responsible for the enhanced solubilization of benzo[a]pyrene. This understanding helps choose suitable surfactants for the remediation of PAH-contaminated soils.
研究领域:
环境科学
·
化学
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DOI
PubMed
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2023
·Vol. 60
·期 3
·245-252
·
IF 1
Ying Li,Yifan Zhang,Lewu Zhan,Jing Hou,Bindong Li
The effects of different surfactants on the morphology of 1,3,5-trinitro-1,3,5-triazinane (RDX) micro-nanoparticles prepared by solvent/non-solvent method in a microfluidic reactor were investigated. Alkyl polyglycoside (APG), sodium dodecyl sulphate (SDS) and dodecyltrimethylammonium bromide (DTAB) were selected as non-solvents. The surface tension and interfacial tension (IFT) properties of SDS, APG and DTAB were investigated. Compared to DTAB and SDS, the APG could effectively reduce the interfacial tension to 10 −2 mN/m and exhibited better surface tension. The RDX prepared with different surfactants were analysed by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and Fourier transform infrared spectrometry (FTIR). The results showed that the different surfactants could significantly improve the dispersion effect of RDX and the crystal morphology was uniform and stable.
研究领域:
化学工程
·
材料科学
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DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2013
·Vol. 224
·期 7
·1-10
·
IF 1.748
Liu Fahui,Wang Chuanhua,Liu Xiaoyan,Liang Xia,Wang Qian
This research evaluated the effects of alkyl polyglucoside (APG), an environment-friendly surfactant, on the removal of anthracene (ANT), phenanthrene (PHE), and pyrene (PYR) from the soil cultivated with Scirpus triqueter , an aquatic native pioneer plant in the Yangtze estuarine wetland, China. Soils spiked with about 200 mg kg −1 of ANT, PHE, and PYR were individually irrigated with 0, 10, 20, 30, 40, 50, 100, and 150 mg L −1 of APG. Plant biomass yields, polycyclic aromatic hydrocarbons (PAHs) removal rates, soil microbial, and soil enzyme activities were quantified after 90 days’ cultivation of Scirpus triqueter . Experiments demonstrated that APG has an ability to facilitate PAHs degradation at appropriate concentrations. The highest removal rate of the PAHs was observed in 40 mg L −1 APG treatment, and the removal rates increased 23, 54, and 52 %, respectively, compared to the non-amended control pots. However, the PAHs removal rate decreased to a certain extent when high concentrations of APG were added. The effect on PAHs removal in the soil could be explained by the changed levels of plant biomass, soil microbial populations, and soil enzymatic activity affected by the APG. The results suggested that the use of Scirpus triqueter combined with APG was an effective means for the phytoremediation of the PAH-contaminated soil. At the same time, APG’s optimal concentration should be determined before the application in the PAH-contaminated wetlands.
研究领域:
环境科学
·
植物修复
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土壤学
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湿地生态学
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DOI
高影响因子
THERMOCHIMICA ACTA
·
2025
·
IF 3.5
Yuxin Yang,Chunhua Lou,Huixiao Wang,Jingjing Yu
In this study, dicyandiamide (DCD) was modified with o-aminoacetophenone to synthesize a new curing agent for epoxy resin (EP), called o-acetylphenylguanidine (o-APG). The experimental results showed that the yield of o-APG could reach 85.79% under the optimal ratio. The structure of o-APG was characterized via Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction analysis, and nuclear magnetic resonance spectroscopy. The result deduced that the compatibility of o-APG with EP was significantly improved because reacted to form the group. The curing kinetics of the reaction of EP cured with o-APG was investigated via differential scanning calorimetry (DSC) by using the methods of Kissinger, Ozawa, Starink, and Friedman. The DSC analysis result showed that curing temperature was reduced by about 50 °C compared with the DCD-cured EP.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Weitao Han,Liang Li,Liuxin Xiao,Yujiang Zhong,Junzi Huang,Huihui Xie,Yahong Xie,Ying Qi
The development of efficient and durable oxygen evolution reaction (OER) catalysts is critical for sustainable hydrogen production via water electrolysis. Herein, NiMoO 4 /Fe 2 (MoO 4 ) 3 heterostructured catalyst supported on nickel foam (NF) is synthesized through decyl glucoside (APG)-assisted hydrothermal reaction and annealing. In 1.0 mol L −1 KOH, the optimized catalyst delivers a low overpotential of 215 mV at 10 mA cm −2 with a small Tafel slope of 42.44 mV dec −1 . It exhibits outstanding long-term stability, maintaining 100 mA cm −2 for 1600 h and 500 mA cm −2 for 400 h under industrial conditions. APG acts as a green template to enhance interfacial adhesion, improve hydrophilicity, and modulate the electronic structure via hydrogen bonding, thus boosting OER performance. This work offers a feasible strategy for designing high-performance industrial OER electrocatalysts.
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高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Sugui Fang,Li Fan,Yulian Niu,Guoshuai Jiao,Haidong Jia,Feng Wang,Haifeng Yang,Yan Kang
Pesticide residues on vegetables could be removed by commercial detergents to guarantee food safety, but the removal efficiencies of different formulations of detergents need to be further investigated. In this work, surface enhanced Raman scattering (SERS) imaging method due to its good space resolution as well as high sensitivity is used to track the thiram residue, and evaluate the pesticide removing efficiencies by mixtures of several surfactants at different ratios. Sodium linear alkylbenzene sulphonate-alkyl glycoside (LAS-APG) with the ratio at 5:5 and the concentration at 0.2 % show the best removing effect. In addition, HPLC method is employed to validate the results of SERS imaging. Furthermore, LAS-APG mixture could be efficiently washed out from the leaves through simple household cleaning, meaning no secondary contamination. It is perspective that SERS imaging is an effective technique to explore the effect of fruit and vegetable detergents in removing pesticide residues.
研究领域:
食品安全
·
分析化学
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DOI
PubMed
高影响因子
ENERGY
·
2025
·
IF 9.4
Fei Wang,Yifan Xu,Peng Zhang,Daiming Liu,Guodong Zhang
Hydrates provide a new solution for the capture of associated petroleum gas, but poor generation efficiency of CH 4 hydrates under low pressure impedes their application. In order to achieve hydrate rapid and continuous generation under low pressure, a new hydrate generation process was presented. The thermodynamic promoters of tetrahydrofuran (THF) and 1,3-dioxolane (DIOX) were used to reduce hydrate generation pressure, while hydrate generation kinetics were enhanced by a nano promoter (-SO 3 - @PSNS), and a spiral-agitated reaction equipment was applied to achieve the integration of hydrate generation, separation and storage. Hydrate structures were evaluated by Raman spectra, and THF or DIOX hydrates were found to form first within the initial 2–5 min before CH 4 molecules enter hydrate cages. Exceptional hydration efficiencies were obtained at 1.5 MPa, and the t 90 for mixed CH 4 /THF and CH 4 /DIOX hydrates are only 29.3 min and 51.6 min, respectively. Hydrate conversion ratios in the storage tank are separately 56.9 % and 52.3 % for mixed CH 4 /THF and CH 4 /DIOX hydrates, and CH 4 storage densities increase by 185 % and 182 % compared with compressed CH 4 . Ultimately, the proposed process makes hydrate rapid and continuous generation under low pressure to be possible, it would accelerate the application of hydrates in APG capture.
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高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Huang Jiayong,Shen Zhuanglin,Xiao Xiaoyun,Wang Lanteng,Zhang Jiwen,Zhou Jiahai,Gu Yang
The clinical efficacy of the antidiabetic drug acarbose is hampered by degradation by the acarbose-preferred glucosidase (Apg) from K. grimontii TD1. Understanding the catalytic mechanism of Apg can aid the design of next-generation hypoglycemic pharmaceuticals acarbose analogs. Here, we determine several crystal structures of Apg to identify the catalytic residues and the ligand-binding pocket of Apg. Structural analyses and computational modeling reveal D448 as the active nucleophile, contrasting with prior studies that assumed D336 to be the nucleophile. In addition to E373 proposed as the proton donor in previous reports, we find that R334 might be an alternative proton donor. Our experimental and computational analyses indicate the two-ring product acarviosine is the two-step hydrolyzed product, where the second hydrolysis is the rate-limiting step. Additionally, further investigation of the acarbose analogs acarstatins A and B that are resistant to Apg is conducted by computational analysis. Overall, our studies provide perspectives into the intricacies of Apg’s catalytic mechanism, contributing to the design of next-generation hypoglycemic pharmaceuticals.
研究领域:
结构生物学
·
酶学
·
计算生物学
·
药物化学
·
糖尿病研究
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DOI
PubMed
高影响因子
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