JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Dongming Li,Weixin Li,Daheng Wang,Xuan He,Xing Du,Hui Chen,Wei Fang,Haijun Zhang,Cheng Gong,Lei Zhao
Electrocatalytic water splitting technology is pivotal for building a green and sustainable society. However, practical application has been hindered by insufficient catalyst activity, leakage risks of liquid electrolytes, and interfacial mass transfer limitations. Herein, we designed an electrocatalytic water-splitting device comprising a superhydrophilic/superaerophobic 6‑nickel (II) hydroxide supported on materials of institute lavoisier-100 (Fe) (6-Ni(OH) 2 /MIL-100) catalyst paired with cobalt-modified polyacrylic acid sodium salt (Co-PAAS) hydrogel featured with high ionic conductivity. Through the construction of size-gradient hierarchical pore channels, water directionally transports from the Co-PAAS hydrogel to 6-Ni(OH) 2 /MIL-100, significantly reducing interfacial impedance. The 6-Ni(OH) 2 /MIL-100 catalyst achieves a low overpotentials of 133 mV for the oxygen evolution reaction (OER) and 190 mV for the hydrogen evolution reaction (HER) at 50 mA cm −2 in 1.0 M KOH, with an overall water-splitting cell voltage of 1.520 V. It demonstrates stable operation for 40 h at 1000 mA cm −2 . The Co-PAAS hydrogel exhibits a maximum moisture uptake of 0.40 g g −1 and an exceptional ionic conductivity of 83.3 mS cm −1 . The integrated quasi-solid-state electrolyzer, combining Co-PAAS hydrogel and 6-Ni(OH) 2 /MIL-100, requires only 1.475 V at 50 mA cm −2 and maintains a current density decay rate < 5% after 400 h of continuous operation. This work provides a transformative strategy and theoretical foundation for industrial and portable electrocatalytic water-splitting technology.
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FLUID PHASE EQUILIBRIA
·
2025
·
IF 2.7
Tao Jia,Jinpeng Yang,Jia Yu
Knowledge of the accurate pρTx behavior of hydrocarbon mixtures at different temperatures and pressures is indispensable for simulating reservoir behavior, optimizing recovery processes, and predicting the thermodynamic properties. The compressed liquid densities of n -pentane(1) + n -decane(2) binary mixtures with mole fraction x 1 = 0.1024, 0.2978, 0.5145, 0.7036, and 0.9113 were measured using a vibrating tube densimeter at temperatures from 283 K to 363 K, and pressures up to 100 MPa. The relative uncertainty for density measurement of n -pentane + n -decane binary mixtures of 0.99 mole fraction purity is 0.1%. The densities of binary mixtures were correlated with the modified Tait equation, and the absolute average deviations of the experimental and calculated values were 0.005%, 0.005%, 0.006%, 0.008%, and 0.009%, respectively. In addition, the isothermal compressibility, the isobaric thermal expansivity, and excess molar volume were calculated from experimental densities.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2017
·
IF 2.323
Dan Fang,Xianyang Meng,Jiangtao Wu
The compressed liquid densities of binary mixtures of 1-butanol and diethylene glycol dimethyl ether (diglyme) have been measured over the temperature range from (283 to 363) K and at pressures up to 100 MPa covering the whole mole fraction of x1-butanol = (0, 0.3116, 0.5469, 0.7308, 0.8787, 1). The measurements were carried out using a high-pressure vibrating-tube densimeter with the combined expanded uncertainty (k = 2) of 0.6 kg·m–3. The experimental data were correlated using the modified Tait equation with an absolute average percentage deviation lower than 0.015% for each composition of the mixtures.
研究领域:
热力学
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物理化学
·
高压流体性质
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MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Mingchun Lv,Da-Wen Sun,Hongbin Pu,Haofan Zhu
Recyclable surface-enhanced Raman scattering (SERS) substrates are beneficial to cost reduction and environmental protection and have always been a research topic with great interest. Herein, a core–shell-satellite structured SERS substrate Fe 3 O 4 @MIL-100(Fe)@Ag nanoparticles (FMAs) was developed, possessing versatile functionalities of adsorption, detection, degradation and recovery. Results showed that the MIL-100(Fe) with peroxidase-like activity as shell catalyzed H 2 O 2 to generate ·OH degraded pollutants within 5 min to achieve substrate cleaning, making FMAs recyclable for at least 5 times to sequentially detect different cationic dyes with high sensitivity, having low detection limits as low as 15.24 ng/L, 387.87 ng/L and 0.71 ng/g for crystal violet in deionized water, aquaculture water and tilapia, respectively. FMAs also showed good uniformity, reproducibility and stability, with a relative standard deviation value of 5.58 % between substrates and about 78.60 % SERS activity remained after 20 d storage at 4 °C. This FMAs substrate thus has great potential for selective detection of trace cationic dyes in food or other fields.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Junmin Ji,Yaxin Zhang,Dan Wang,Yan Wang
The coconut shell-based activated charcoal was decorated by three different electronegativities of surfactants (CTAB, SDS, and Triton X-100) through the impregnation method, and the decorated activated charcoal adsorbents were used for the removal of PAHs from peanut oil, respectively. The influence of surfactant decoration on the adsorption and detoxification effect of coconut shell-based activated charcoal was discussed. The thermodynamic and kinetic behaviors of PAHs adsorption on the surfactant-modified activated charcoal were investigated, and the adsorption mechanism was analyzed in-depth. Notably, the prepared modified coconut shell activated charcoal could not only remove more than 90% of PAHs from the peanut oil but also keep the cytotoxicity of the treated peanut oil low. Meanwhile, the detoxification procedure has little effect on the nutritional quality and flavor of the peanut oil. The results of this fundamental study demonstrate that the low-cost surfactant-modified coconut shell-based activated charcoal was effective and feasible.
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FLUID PHASE EQUILIBRIA
·
2017
·
IF 2.473
Tao Jia,Shengshan Bi,Jiangtao Wu
Compressed liquid densities of n -decane + n -dodecane binary mixtures were measured with a vibrating-tube densimeter at temperatures from (283–363) K and pressures from (0.1–100) MPa over the whole range of composition . The binary mixtures n -decane (1) + n -dodecane (2) were prepared at mole fractions of ( x 1 = 0, 0.2297, 0.4436, 0.6433 0.7841, and 1.0), respectively. The experimental densities of binary mixtures were successfully correlated with the Tait-type equation, and the absolute average percentage deviations of the experimental and calculated values were 0.048%, 0.055%, 0.059%, 0.058%, 0.068%, and 0.052%, respectively. In addition, the excess molar volume was calculated for whole range of temperature, pressure and composition.
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ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Hiba Shaghaleh,Yousef Alhaj Hamoud,Qin Sun
Hydrogel adsorbents are promising tools for reducing heavy metals' bioavailability in contaminated soil. However, their practical feasibility remains limited by the low stability, inefficient removal efficiency, and potential secondary pollution. Optimizing the adsorption operation and the functional properties of hydrogel adsorbents could eliminate this method's drawbacks. Herein, three innovative in-situ remediation strategies for Pb/Cu-contaminated soil were adopted based on the concept of novel TEMPO-cellulose (TO-NFCs)/lignin/acrylamide@MIL-100(Fe) nanocomposite hydrogel adsorbent (NCLMH). Characteristic analyses revealed ideal Pb/Cu adsorption mechanisms by swelling, complexation, electrical attraction, and ion exchange via carboxyl/hydroxyl/carbonyl groups and unsaturated Fe(III) sites on ANCMH besides FeOOH formation. The highest maximum theoretical adsorption capacities of Pb(II) and Cu(II) on ANCMH were 416.39 and 133.98 mg/g, under pH 6.5, governed by pseudo-second-order/Freundlich models. Greenhouse pot experiments with contaminated soils amended with two-depth layers of 0.5% NCLMHs (SA@NCLMH) displayed a decline in Pb and Cu bioavailability up to 85.9% and 74.5% within 45 d. Soil column studies simulating continuous water soil flushing coupled with NCLMH layers, instead of conventional extractant fluids, and connected to NCLMH-sand column as purification unit (CF@NCLMH) achieved higher removal rates for Pb, and Cu of 89.5% and 77.2% within 24 h. Alternatively, conducting multiple-pulse soil flushing mode (MF@NCLMH) gained the highest Pb and Cu removal of 96.5% and 85.4%, as the water flushing-stop flux events allowed adequate water movement/residence period, promoting Pb/Cu desorption-adsorption from soil to NCLMH. Also, the NCLMH-sand column conducting and easy separation of the stable/reusable NCLMHs prevented the potential secondary pollution. Interestingly, the three remediated soils reached the corresponding regulation of the permissible limits for Pb and Cu residential scenarios in medium-to-heavily agricultural polluted soils, alleviating the Pb/Cu bioaccumulation and phytotoxicity symptoms in cultivated wheat, especially after MF@NCLMH treatment. This study introduces promising alternative remediation strategies with high sustainability and feasibility in acidic-to-neutral heavy metal-contaminated agricultural soil.
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JOURNAL OF FOOD SCIENCE
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2024
·
IF 3.2
Juan Du,Zongshuang Li,Jiangli Guo,Kaidong Du,Zhijian Chen,Yanhong Bai
In this study, a pretreatment method based on a magnetic capture probe for the rapid isolation and enrichment of bacteria from raw pork was developed. The chitosan immobilized Fe 3 O 4 @MIL-100(Fe) was prepared as a capture probe for total bacterial counts through the electrostatic interaction of positively charged chitosan and the negatively charged substances on the surface of bacteria. The interference of matrix in pork samples on this method was studied and removed by differential centrifugation. The results showed the capture probe had a great selectivity binding and magnetic separation properties for the tested six common bacteria in pork. Under the optimal conditions, the capture efficiency of the bacteria (10 5 CFU mL −1 ) from pork surface samples was all above 90%. The capture efficiency of the bacteria in a homogenate system was greatly decreased due to the interference of sarcoplasmic protein and myofibrillar protein in pork. The matrix effect was mitigated by a differential centrifugation method, and the capture efficiency of all six bacteria was >80%. The developed magnetic separation method took 40 min and showed good isolation and enrichment properties of bacteria. Thus, the proposed method is expected to provide a simple, convenient, and time-saving pretreatment method for the detection of total bacterial counts in pork.
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RSC Advances
·
2025
·Vol. 15
·期 14
·10862-10872
·
IF 4.6
Muneera Alrasheedi,Salah M. El-Bahy,Refat El-Sayed,Khaled F. Debbabi,Alaa S. Amin
Although modern reported methods, such as AAS, ICP-AES, ICP-MS, have good sensitivity, the high cost of equipment, the need for sophisticated instruments, separation and preconcentration steps and experienced technicians along with lack of precise methods make them cumbersome. Solid phase extraction (SPE) emerges as an attractive technique that reduces solvent consumption, minimizes exposure, shortens extraction time, and lowers disposal costs. Herein, a pioneering methodology for the quantification of minute amounts of silver is introduced, using 2-nitro-6-(thiazol-2-yl-diazenyl)phenol (NTDP) as a complexing agent and Triton X-100 as a nonionic surfactant within a ternary surfactant system at a pH of 5.3. This novel extraction strategy demonstrated selective preconcentration. The enriched solution was subjected to spectrophotometric analysis for the quantification of the analyte. After refining extraction and complexation parameters, a remarkable 250-fold increase in the enrichment factor was attained, highlighting a sensitivity boost of 509 times compared with traditional extraction approaches relying solely on nonionic surfactants. The key parameters of molar absorptivity and Sandell sensitivity were determined to be 6.04 × 106 L mol−1 cm−1 and 0.0018 ng cm−2, respectively. The calibration plot was observed from 5.0–175 ng mL−1, whereas Ringbom optimum concentrations ranged from 15–160 ng mL−1. The detection and quantification limits were 1.63 and 4.95 ng mL−1, respectively. The relative standard deviation (RSD) of the complex was 2.27. The suggested method was efficiently utilized for assessing the Ag+ concentration in real samples, producing acceptable outcomes.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Yu Chen,Zhuojia Shi,Yuqing Zhang,Yaxue Shen,Zheng Li,Yanlong Wang,Minghui Feng,Qi Liu,Xiaojie Zhao
One hundred low-melting mixture solvents (LoMMSs) are utilized to systematically investigate the impact of acid–base regulation on the leaching efficiency of all-solid-state electrolytes. Results show that the acidity of LoMMSs is positively correlated with the Li leaching efficiency in the all-solid-state electrolytes aluminum-doped lithium lanthanum zirconium oxide and lithium lanthanum zirconium tantalum oxide (LLZTO); however, there is a two-piece linear fitting tendency between the acidity of LoMMSs and La leaching efficiency in the LLZTO. Furthermore, the impact of factors such as the temperature, time, and liquid-to-solid ratio on the dissolution of all-solid-state electrolytes by LoMMSs is also investigated. The leaching efficiencies of LoMMSs for recovering Li and Zr from the all-solid-state electrolytes are 99.24 and 83.74%, respectively. When LoMMSs and the all-solid-state electrolytes are scaled up 100 times to simulate industrial applications, the leaching efficiency of Li decreases only slightly (from 94.81 to 94.70%).
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Qingcun Li,Qingsheng Bai,Ronggang Zheng,Peng Li,Rui Liu,Sujuan Yu,Jingfu Liu
Micro- and nanoplastics (MNPs) have drawn growing concerns because of their potential adverse effects on aquatic ecosystems. However, limited information is available regarding their concentration and distribution in the actual environment, particularly for nanoplastics (NPs). Herein, forty-eight sampling sites were established across the entire Taihu Lake to comprehensively investigate small MNP (<100 μm) pollution. By pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), six kinds of MNPs in Taihu Lake, namely polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), and polymethyl methacrylate (PMMA) were quantified. Total mass concentrations of the six MNPs in the collected surface water samples ranged from 381 to 1356 μg/L. Specifically, the concentrations of small microplastics (1–100 μm) ranged from 229 to 1182 μg/L, and those of nanoplastics (<1 μm) ranged from 88 to 305 μg/L. The mass concentrations of the six MNPs were as follows: 20.3–635.7 μg/L for PE, 46.6–281.4 μg/L for PP, 81.8–410.6 μg/L for PET, 62.8–445.8 μg/L for PVC,
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JOURNAL OF PHYSICAL CHEMISTRY B
·
2026
·
IF 3.2
Xiaonan Li,Xirong Huang
Abstract An oil-in-water microemulsion is an excellent candidate medium for the electrochemical regeneration of the coenzyme NADH and its subsequent coupled conversion application due to its good electrical conductivity and solubilization capacity for hydrophobic substrates. In this work, the reduced methyl viologen (MV+•)-mediated electrochemical reduction of coenzyme NAD+ was studied in a Triton X-100 (TX-100)-stabilized methyl tert-butyl ether (MTBE)-in-water microemulsion. The effects of the surfactant concentration and the oil content on the electrochemical behavior of the MV2+/MV+• couple and the activity of diaphorase (DH) were systematically investigated. The results show that in the microemulsion, the couple exhibits excellent reversibility. Compared with the aqueous buffer system, the couple in the microemulsion system has a more positive formal potential and a lower redox peak current, depending on the levels of both the surfactant and the oil. The positive shift of the formal potential is attributed to the stabilizing effect of the surfactant aggregates on the relatively hydrophobic MV+• species, and the decrease of the redox currents is ascribed to the decrease of the electroactive area of the electrode due to the adsorption of the surfactant and the oil as well as the decrease of the diffusion coefficients of MV species associated with or solubilized in the surfactant aggregates. The activity of DH in the microemulsion system also depends on the TX-100 concentration and the MTBE content. Increases in both [TX-100] and [MTBE] result in a decrease in DH activity. This phenomenon could be explained based on the [TX-100]/[MTBE]-dependent changes in the local acidity and the local concentration of the substrate DCPIP in the microemulsions. Based on cyclic voltammetry, the MV+•-mediated electroreduction of NAD+ in the TX-100-stabilized MTBE/H2O (0.1 M PB, pH = 7.0) microemulsion was studied. For the microemulsion system containing 0.5 mM MV2+, 5 mM NAD+, and 26.6 μM DH, when a scan rate of 2 mV s–1 was applied, a typical steady-state S-shaped CV curve was obtained. UV–vis spectroscopy confirms that the NADH generated by the mediated reaction is bioactive. By coupling the MV+•-mediated NADH electrochemical regeneration reaction with the horse liver alcohol dehydrogenase (HLADH)-catalyzed reduction of the hydrophobic substrate 4-phenyl-2-butanone, the enantiomerically pure (S)-4-phenyl-2-butanol can be selectively obtained. After 12 h, the yield of the product in the microemulsion is approximately 10 times that in the DMSO-buffer mixed homogeneous system. This difference in yield is caused by the differences in enzyme activity and stability, as well as in the substrate local concentration and reactivity in the two systems. The present study indicates that the TX-100-stabilized MTBE-in-water microemulsion is a suitable medium for the electrochemical regeneration of NADH and the electroenzymatic conversion of water-insoluble substrates catalyzed by NADH-dependent oxidoreductases.
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