CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yachao Xu,Zhong Zhou,Peng Yu,Huiquan Gu,Zixu Zhang,Ying Wang
Efficient reduction of U(VI) to U(IV) during seawater uranium extraction remains a challenge. Here, cerium dioxide quantum dots were bonded to the surface of indium zinc sulfide (ZIS) to form ZIS composite cerium dioxide quantum dots (ZIS/QDs-Ce). The oxygen vacancies are able to activate the Zn-O bonds at the ZIS and QDs-Ce interfaces, thus enabling the constructed S-scheme heterojunction to show great potential in facilitating the separation and transfer of photogenerated carriers. ZIS/QDs-Ce exhibited high anti-bio-pollution activity by generating biotoxic free radical reactive oxygen species (ROS). The photo-induced reduction of uranium by ZIS/QDs-Ce in 10 ppm uranium spiked simulated seawater reached 99.6 %. Oxygen vacancies cause distortions in the crystal field, and the Zn-O bond activation process triggers the movement of ZIS/QDs-Ce from the singlet low-spin state to the stable triplet state, resulting in free-carrier trapping centers and optimized electronic energy band structures. ZIS/QD-Ce has superior uranium extraction capabilities and is highly recommended for uranium extraction from seawater.
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JOURNAL OF COORDINATION CHEMISTRY
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2018
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IF 1.703
Guo-Cheng Liu,Yan Li,Ying Xiong,Xiang-Xiang Liu,Qiao-Min Li,Ju-Wen Zhang,Hong-Yan Lin,Xiao-Wu Li
To investigate the effect of the spacers of S-/O-bridged dipyridylamides on the structures of Co(II)/Zn(II) complexes, [Co(L1)(chda)]·1.5H2O (CP1), [Co(L2)(chda)] (CP2), [Zn(L1)(hip)]·DMA·2H2O (CP3), and [Zn(L2)(hip)]·2.8H2O (CP4) [L1 = N,N′-bis(pyridine-3-yl)thiophene-2,5-dicarboxamide, H2chda = trans-1,4-cyclohexanedicarboxylic acid, L2 = N,N′-bis(pyridine-3-yl)-4,4′-oxybis(benzoic) dicarboxamide, H2hip = 5-hydroxyisophthalic acid, DMA = N,N-dimethylacetamide], have been solvothermally synthesized. X-ray single-crystal diffraction shows that CP1 is a 2-D 3,5-connected network based on Co-L1 linear chains and (Co-chda)2 double chains. CP2 features a 1-D structure derived from 1-D wave-like (Co-chda)2 double chains decorated by terminal L2 ligands. CP3 and CP4 show wave-like (4,4) networks constructed by 1-D Zn-L1 zigzag and Zn-hip zigzag (for CP3)/linear (for CP4) chains. The effect of the spacers of S-/O-bridged dipyridylamides on the structures of the title complexes was discussed. Electrochemical behaviors of CP1–CP2 and solid-state luminescent properties of CP3–CP4 were studied. The luminescence investigations show that CP3 and CP4 are recycled fluorescent probes for environmentally relevant Fe3+ ions. The photocatalytic properties for the degradation of methylene blue (MB) under ultraviolet light irradiation of CP3–CP4 and the recyclable materials after fluorescent sensing Fe3+ ions (named CP3@Fe3+ and CP4@Fe3+) have also been investigated.
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CERAMICS INTERNATIONAL
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2024
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IF 5.1
Jianjian Wang,Yue Yu,Zhiqiang Li,Hualin Wang,Shimin Liu,Tingting Yao,Weiwei Jiang,Nan Wang,Chaoqian Liu,Wanyu Ding,Zhihua Zhang,Chuang Dong
Multi-component high entropy oxides (HEOs) have attracted enormous attention due to their unique structures and potential applications. The conventional selection strategy to obtain HEOs is to search for equimolar cationic systems to maximize configurational entropy and avoid phase separation. We previously explored non-equimolar cationic rocksalt structure Mg–Co–Ni–Cu–Zn–O HEOs using cluster-plus-glue-atom model. In this paper, the mixing entropy, enthalpy and Gibbs free energy of constructed superclusters were numerically calculated and compared with the correlated crystal structure based on recent studies. It indicated the Gibbs free energy rather than mixing entropy agrees well with the phase stability of HEOs. Mg 28 Co 17 Ni 19 Cu 16 Zn 16 O 96 shows the optimal phase stability which is related to the lowest Gibbs free energy, reflecting a regular octahedral environment preferred by the cation composition in the system. Enthalpy and entropy are among important design criteria in determining the phase stability of HEOs but the function of enthalpy is obviously higher than that of entropy. This study provides a comprehensive way to access HEOs which is undoubtedly very important for the development of other non-equimolar cationic high entropy materials such as carbides , silicides , borides or nitrides .
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2024
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IF 4
Wang He,Zixuan Liu,Haoyue Liu,Jie Sun,Haitao Chen,Baoguo Sun
The flavor of three types dried sausage from Guangdong, Sichuan and Harbin were studied by headspace solid-phase microextraction (HS-SPME) and solvent-assisted flavor evaporation (SAFE) combined with gas chromatography-mass spectrometry (GC-MS), sensory evaluation combined with principal component analysis. The results showed that Harbin dried sausage had more prominent spicy flavor attributes, and the varieties and contents of flavor substances were more abundant. Then Harbin dried sausage was selected for further analysis. The flavor dilution factor of 37 aroma components was obtained by gas chromatography-olfactometry-mass spectrometry and aroma extract dilution analysis. 30 compounds were quantitated, and their odor activity values were calculated. The key aroma components were validated by using recombination and omission experiments. The omission experiment of 27 aroma compounds was carried out, and 10 compounds were finally determined as the key aroma active substance. The key aroma components of Harbin dried sausage included hexanoic acid, acetic acid, isovaleric acid, butyric acid , nonanal, acetoin, hydroxyacetone, ethyl hexanoate, eugenol, and p -cresol.
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FOOD HYDROCOLLOIDS
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2024
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IF 11
Chenzhi Wang,Yan Li,Wei Xiong,Qiang Liang,Xin Hua,Pu Xuan,Wei Lin,Yingzheng Yao
The correlation between the structural parameters of droplets and rheological properties of O/W high internal phase Pickering emulsions (HIPPEs) stabilized by soy protein isolate (SPI) nanoparticles was elucidated, with a volume fraction of dispersed phase ( ϕ ) above the closest packing density (74%). The structural basis of SPI nanoparticles was confirmed to be spherical heat-induced protein aggregates, which had moderate wettability and excellent interfacial activity. The structural parameters of emulsion droplets (contact length L , diameter D , length d 1 , width d 2 , the number of adjacent contact droplets Z ), and the stability and rheological properties of HIPPEs were characterized by the confocal laser scanning microscopy (CLSM), diffusing wave spectroscopy (DWS), and mechanical rheometer respectively. The results of CLSM indicated the transition of droplets from spherical to polyhedral shapes as increased ϕ , accompanied by an increased L and Z . The rheological and stability analysis confirmed the widened linear viscoelastic range, elevated gel point ( ε c ), and the extended half−life of the intensity autocorrelation function of HIPPEs as ϕ increased. Moreover, the loss factor (tan δ ) remained constant at 0.1 within the ϕ of 74%–86%, revealing the solid−like nature of HIPPEs. The correlation between ϕ , structural parameters of droplets, and rheological properties of HIPPEs was further analyzed. The nonlinear regression fitting between the L / D and G ' (elastic modulus) yielded a better fitting effect than d 1 / d 2 and Z , suggesting an intrinsic correlation between emulsion structure and rheology. In summary, this study elucidated the intricate relationship between ϕ , droplet structure, and rheological properties of HIPPEs, offering a research foundation and theoretical basis for the development and application of protein particle−stabilized HIPPEs.
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JOURNAL OF ETHNOPHARMACOLOGY
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2024
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IF 4.8
Yun-Lu Xu,Xue-Jian Li,Wei Cai,Wen-Ying Yu,Jing Chen,Qin Lee,Yong-Jun Choi,Fang Wu,Ying-Jun Lou,Hua-Zhong Ying,Chen-Huan Yu,Qiao-Feng Wu
Ethnopharmacological relevance Viral pneumonia is the leading cause of death after SARS-CoV-2 infection. Despite effective at early stage, long-term treatment with glucocorticoids can lead to a variety of adverse effects and limited benefits. The Chinese traditional herb Pogostemonis Herba is the aerial part of Pogostemon Cablin (Blanco) Benth., which has potent antiviral, antibacterial, anti-inflammatory, and anticancer effects. It was used widely for treating various throat and respiratory diseases, including COVID-19, viral infection, cough, allergic asthma, acute lung injury and lung cancer. Aim of the study To investigate the antiviral and anti-inflammatory effects of chemical compounds from Pogostemonis Herba in SARS-CoV-2-infected hACE2-overexpressing mouse macrophage RAW264.7 cells and hACE2 transgenic mice. Materials and methods The hACE2-overexpressing RAW264.7 cells were exposed with SARS-CoV-2. The cell viability was detected by CCK8 assay and cell apoptotic rate was by flow cytometric assay. The expressions of macrophage M1 phenotype markers (TNF-α and IL-6) and M2 markers (IL-10 and Arg-1) as well as the viral loads were detected by qPCR. The mice were inoculated intranasally with SARS-CoV-2 omicron variant to induce viral pneumonia. The levels of macrophages, neutrophils, and T cells in the lung tissues of infected mice were analyzed by full spectrum flow cytometry. The expressions of key proteins were detected by western blot assay. Results Diosmetin-7-O-β-D-glucopyranoside (DG) presented the strongest anti-SARS-CoV-2 activity. Intervention with DG at the concentrations of 1.25-50 μM not only reduced the viral replication, cell apoptosis, and the productions of inflammatory cytokines (IL-6 and TNF-α) in SARS-CoV-2-infected RAW264.7 cells, but also reversed macrophage polarity from M1 to M2 phenotype. Furthermore, treatment with DG (25-100 mg/kg) alleviated acute lung injury, and reduced macrophage infiltration in SARS-COV-2-infected mice. Mechanistically, DG inhibited SARS-COV-2 gene expression and HK3 translation via targeting YTHDF1, resulting in the inactivation of glycolysis-mediated NF-κB pathway. Conclusions DG exerted the potent antiviral and anti-inflammatory activities. It reduced pneumonia in SARS-COV-2-infected mice via inhibiting the viral replication and accelerating M2 macrophage polarization via targeting YTHDF1, indicating its potential for COVID-19 treatment.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Qiaoyu Zhang,Chengcheng Chen,Fangting Liu,Zhengguo Zhang,Xiaoming Fang,Qiong Liu
The in-situ photocatalytic selective reduction of O 2 to produce H 2 O 2 is a promising green and sustainable production technique. However, it faces significant challenges due to the high reaction energy barrier of the H 2 O oxidation half-reaction, which inhibits the reaction and leads to undesirable oxidative by-products. In this study, we have the first time developed a O/Cs dual-functional carbon nitride material for the simultaneous photocatalytic reduction of O 2 to synthesize H 2 O 2 and the selective oxidation of xylose to produce xylonic acid. The CN-O/Cs material exhibits excellent photocatalytic activity for H 2 O 2 production at 820.6 μmolh −1 (41.03 mmolh -1 g −1 ), while achieving a xylose oxidation rate of 359.5 μmolh −1 to xylonic acid, surpassing most reported catalytic systems and enabling biomass upgrading. It is elucidated that the introduction of Cs atoms serves as new reduction active sites, significantly enhancing the adsorption of O 2 with the transitioning Pauling type adsorption configuration. And the Cs atoms facilitate the deprotonation capability of H 2 O to form the crucial *OOH while lowering the reaction energy barrier. The presence of oxygen atoms plays a role in redistribution of electron density, and promotes the selective oxidation of the aldehyde group at the edge of xylose. The synergistic functionalities of Cs and O atoms enable the efficient utilization of electron-hole pairs for the simultaneous synthesis of H 2 O 2 and xylonic acid. This study demonstrates that the rational design of multifunctional tandem sites materials at the atomic scale for the synergistic synthesis of H 2 O 2 and selective oxidation of biomass holds promising prospects.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2012
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IF 1.693
Baimei Yang,Hui Wan,Guofeng Guan
Isobaric vapor–liquid equilibrium (VLE) data are reported for binary mixtures of methyl formate + o-xylene, methyl formate + m-xylene, methyl formate + p-xylene, and methyl formate + ethylbenzene at 101.33 kPa. The data are obtained using a vapor recirculating type (modified Othmer's) equilibrium still. All of the binary systems show positive deviation from ideality. None of the systems form an azeotrope. The VLE data for these binary systems are checked to meet rigorous thermodynamic consistency by the Herington method and the point-to-point test of the Fredenslund method. The experimental VLE data are well-correlated by the nonrandom two-liquid (NRTL), universal quasichemical activity coefficient (UNIQUAC), and Wilson equations.
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FOOD HYDROCOLLOIDS
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2024
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IF 11
Yi Li,Yiqiao Pei,Zuoyu Shan,Yumei Jiang,Steve W. Cui,Zouyan He,Ye Zhang,Hao Wang
Although various types of water-oil-water (W/O/W) double emulsions were explored and applied for intestine-targeted delivery, further research was needed to protect probiotics from the gastrointestinal barrier. Thus, this study aimed to encapsulate probiotics through a gel bead-bound emulsion system to improve the ability to resist the external environment, and sustained release of probiotics. In this study, sodium caseinate (NaCas)-κCarrageenan (κCar) by Maillard reaction was prepared as the external emulsifier. Then emulsions combined with sodium alginate (SA)-carboxymethyl chitosan (CMCS) hydrogel shells to encapsulate the internal aqueous phase of L . rhamnosus 76 ( LR76 ) for intestinal targeted delivery. The gel shell assembled with SA and CMCS in a citric acid solution was demonstrated by the combination of hydrogen bonding (protonated carboxyl –COOH and –OH) and electrostatic interactions (-COO - and –NH 3 + ) through IR spectroscopy. The system also showed excellent pH responsiveness and good thermal stability. The in vitro gastrointestinal simulated experiment showed the release of probiotics was managed through their swelling behavior with survival rate reaching 90.69 ± 0.04%. The slow-release properties of gel beads were also verified in vivo, which could be applicable in animals for further healthy effects. The 16S rRNA analysis revealed a high relative abundance of Lactobacillus from the Firmicutes, highest up to 88.08%. The above results suggested that the hydrogel bead system could be used as carriers for encapsulating probiotics, which provided a theoretical basis for the future application of probiotics in the food and pharmaceutical industries.
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高影响因子
FOOD RESEARCH INTERNATIONAL
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2024
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IF 7
Xueli Chen,Haoyue Liu,Cong Li,Yujuan Xu,Baocai Xu
To clarify the characteristic aroma compounds and flavor discrepancies of five Chinese typical pig species, headspace-solid phase microextraction gas chromatography–olfactometry-mass spectrometry (HS-SPME/GC-O-MS), electronic nose (E-nose), aroma recombination and omission experiments were used to analyze the characteristic aroma and boundary of five boiled pork. A total of 38 volatile compounds were identified, of which 14 were identified as important odorants with odor-activity values (OAVs) greater than 1. Aroma recombination and omission experiments revealed 8 key characteristic aroma compounds, which significantly contributed to the overall aroma. Sensory evaluation of the recombination model with the 8 aroma compounds scored 3.0 to 4.0 out of 5 points. 12 potential markers were identified to distinguish by principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA), including (E)-2-octenal, 3-ethyl-2-methyl-1,3-hexadiene, (E)-2-heptenal, 2-pentylfuran, cyclooctanol, 1-heptanol, sec -butylamine, D-limonene, N-vinylformamide, 2,3-octanedione, 2-ethylfuran and 3-pentanamine. Alongside benzaldehyde and pentanal, the combinations and fluctuations of these 14 aroma markers were proposed to constitute the aroma boundaries of different pork breeds. The aroma-active substances were able to effectively differentiate different breeds.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Qingcai Yu,Ying Chang,Shaohong Guo,Yaqiong Su,Jingchun Jia,Meilin Jia
In direct formic acid fuel cells, the formic acid oxidation reaction (FAOR) takes place at the anode, and the oxygen reduction reaction (ORR) occurs at the cathode. Whereas the cathode of zinc-air batteries (ZABs) also involves the ORR, these three electrochemical reactions collectively constitute the core processes of related energy devices. The study of the catalytic performance of palladium (Pd)-based catalysts has become a research focus. This study explores the utilization of rare earth metal-organic frameworks to enhance the interface interactions between Pd and CeO 2 . These frameworks facilitate the modulation of the electronic state of Pd, ensure site stability, and promote the generation of additional oxygen vacancies through bridge bonding between Pd–O–Ce. The Pd-CeO 2 /C(1:2) catalyst in 0.5 M H 2 SO 4 exhibited high initial potential (0.86 V vs. reversible hydrogen electrodes (RHE)), half-wave potential (0.76 V vs. RHE), excellent ORR stability, and exceptional performance in ZAB cathodes with a power density reaching 195.4 mW·cm −2 . Furthermore, in FAOR (0.5 M H 2 SO 4 + 0.5 M HCOOH) applications, this catalyst displays significantly higher activity (991.4 mA·mg −1 ) and stability than commercial Pd/C and platinum/C catalysts while maintaining excellent selectivity for formic acid decomposition. Theoretical calculations further prove that the formation of the Pd–O–Ce bridge bond is conducive to FAOR's direct reaction pathway and avoids CO toxicity. The Pd-CeO 2 /C(1:2) catalyst is utilized in positive and negative electrodes within self-assembled H-type electrolytic cells, achieving open-circuit voltages superior to those offered by commercial catalysts, thus confirming its practical applicability.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Bing Wei,Jing Li,Wenyu Wang,Zuoqin Zhou,Ran Kan,Susu Yu,Ruhua Dang,Yajun Wang,Zheng Yang,Wei Yang,Jing Wang
Developing low-cost and green biomass derived carbon with high adsorption capacity is an important way to solve heavy metal and organic pollution in water. Herein, triethanolamine, potassium hydroxide, and rice straw were used as raw materials to prepare the heteroatom doping biomass carbon (RSDPC) via solvothermal avenue. The adsorption performance and mechanism of Pb 2 + , Cu 2+ , and methyl orange (MO) on RSDPC were systematically investigated via a series of experimental characterizations, adsorption kinetics, isothermal models, and density functional theory (DFT) calculations. The synthesized RSDPC exhibited the maximum adsorption capacities to Pb 2+ , Cu 2+ , and MO are of ca. 230.2, 170.0, and 346.8 mg·g −1 , respectively, originating from the developed pore structure, considerable specific surface area, and numerous N/O co-doping active sites. Basing on the evaluation of kinetic and isotherm models, the adsorption mechanism of RSDPC to the pollutants is mainly induced by semi-chemical and monolayer adsorption. The cyclic adsorption measurements presented the RSDPC possessed stable adsorption capacity after 5 cycles with the average adsorption rates of ca. 94.33 %, 98.49 %, and 99.95 % to Pb 2+ , Cu 2+ and MO, respectively. The pollutant elimination of RSDPC in different real samples were all near 100 %. Moreover, the adsorption process of Pb 2+ and Cu 2+ ions was controlled by electrostatic interaction and that of MO was controlled by π-π stacking interaction, which was verified by density function theory (DFT) calculations and XPS analysis after adsorption simultaneously. This work developed a green and versatile biomass derived carbon by structural design and N/O heteroatoms co-doping to investigate the microscopic mechanisms of pollutant adsorption via the combination of experiments and theoretical calculations, providing a new method for the resource utilization of agricultural waste in the field of complex sewage purification.
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危险品化学品经营许可证（带存储）