COLLOIDS AND SURFACES B-BIOINTERFACES
·
2019
·
IF 3.973
Shahid Iqbal,Xiao Dong Chen,Timothy V. Kirk,He Huang
The purpose of this study was to create W 1 /O/W 2 Multiple Emulsions by controlled osmotic swelling, and gelation of whey protein isolate (WPI) and high methoxy pectin (HMP) microspheres in internal and external acidic aqueous phases. Three different kinds of W 1 /O/W 2 multiple emulsions (ME) were prepared, with 8 wt.% Polyglycerol polyricinoleate (PGPR) in their oil phases, with WPI and HMP in internal and external aqueous phases (250 mM NaCl, pH 3.5): (i) ME1: The inner aqueous phase (W 1 ) contained 40% buffer solution, while W 2 consisted of 10% WPI and 2% HMP; (ii) ME2: W 1 contained 10% WPI, with 2% HMP (250 mM NaCl) in W 2 ; (iii) ME3: 10% WPI and 2% HMP in W 1 , while W 2 contained 1% Tween 80. The original multiple emulsions were diluted by different factors (1:0 to 1:5 with citrate buffer solution), and subject to thermal treatment from 25 to 90 °C to compare their microstructural and rheological properties. It was observed that the ME1 emulsion had higher viscosity and shear modulus than for other emulsions. After dilution however, the shear viscosity of ME3 was higher than ME1 and ME 2 at intermediate shear rates, which showed that the emulsions were osmotically well controlled in internal aqueous phases. Optical and confocal microscopy also supported our rheological measurements with evidence of WPI-HMP gelation , and osmotic swelling, in original and in swollen multiple emulsions. The results of this work may provide useful information about the encapsulation of bioactive compounds, in internal and external aqueous phases, for the development of healthier reduced-fat products in food industry.
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DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 14
·4476-4490
·
IF 4.174
Keyu Tao,Lian Wang,Yang Hai,Yun Gong
P–TiOn–VOm nanowires were grown on nickel foam (NF) via a one-pot hydrothermal method and by further vapor deposition/phosphorization method. It was found that low valence states of titanium oxide and deficient-oxygen coexist in P–TiOn–VOm/NF. Furthermore, (TiO1.25)3.07 (denoted as TiOn) and VO (denoted as VOm) possess similar structures and matched facets, and their epitaxial growth leads to the formation of TiOn/VOm heterostructure with a formation energy of −1.59 eV. P–TiOn–VOm/NF possesses good electron conductivity and electrons can be transferred from Ti to V centers, as evidenced by the DFT calculations and the XPS spectra. As a result, the specific capacity of P–TiOn–VOm/NF can reach 785 C g−1 at 1 A g−1 in the potential range of 0–0.55 V vs. Hg/HgO, which is much larger than those of VOm/NF, P–VOm/NF, and P–TiO2–VOm/NF. On the other hand, the TiOn/VOm heterostructure also favors the separation and transfer of photoinduced electrons and holes, and P–TiOn–VOm/NF exhibits visible-light-driven photoresponse. Under visible light illumination, the specific capacity of P–TiOn–VOm/NF is increased by 6.2% relative to that in the dark. Furthermore, the P–TiOn–VOm/NF//activated carbon (AC) asymmetric supercapacitor (ASC) shows an energy density of 37.2 W h kg−1 at a power density of 1 kW kg−1 and excellent cycling performance with 93.6% capacity retention after 10 000 cycles at 5 A g−1, which is comparable to and even superior to those of titanium oxides and vanadium oxides. A promising achievement has been proposed to improve the energy storage performance of P–TiOn–VOm through P-functionalization and O-deficiency in this work.
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Food Analytical Methods
·
2018
·Vol. 12
·期 2
·544-557
·
IF 2.245
Al-Dalali Sam,Zheng Fuping,Sun Baoguo,Chen Feng
Zhenjiang aromatic vinegar is one of the most popular vinegars in China, which can be produced by either traditional or modern techniques. Aroma profiles of the traditional Zhenjiang aromatic vinegar (TZAV) and the modern Zhenjiang aromatic vinegar (MZAV) at different stages of their aging were analyzed by headspace solid-phase microextraction (HS-SPME) with an aid of DVB/CAR/PDMS fiber combined with gas chromatography-mass spectrometry (GC-MS) and gas chromatography-olfactometry (GC-O). A total of 53 volatile compounds were identified. Among them, 43 aromas were positively identified after comparison with their corresponding authentic compounds. Two volatiles, including isopentyl alcohol and butyl benzoate, were only identified in TZAV, while propiophenone was only identified in MZAV. In addition, some volatiles were found to be generated during the aging period, which included isopentyl alcohol, 3-(methylthio)propyl acetate, and 2-acetoxy-3-butanone in the TZAV samples, and 2-ethyl-1-hexanol, octanoic acid, propiophenone, and dimethyl trisulfide in the MZAV samples. The total amount of volatile compounds in the MZAV was greater than its counterpart TZAV. Moreover, 29 odor-active compounds were recognized by GC-O analysis, while 25 of them were confirmed by their authentic compounds, and their perceived odors included sweet, acid, buttery, floral, herbal, fruit, fresh, pungent, almond, and geraniol notes.
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Nanoscale
·
2019
·Vol. 11
·期 18
·8967-8977
·
IF 6.97
Li Li,Rui Zhao,Tinghua Xu,Dandan Wang,Du Pan,Kun Zhang,Caiyan Yu,Xia Lu,Guanjie He,Ying Bai
LiNi0.5Mn1.5O4 (LNMO) spinel has drawn increasing attention due to its high voltage, stabilized electrochemical performance and safety features as a cathode for lithium-ion batteries. However, the main challenge lies in its unstable surface structure, especially at elevated temperatures. In this paper, we decorate the LNMO precursor with a solid electrolyte of Li1.4Al0.4Ti1.6(PO4)3 (LATP) via a facile sol–gel method, followed by a co-crystallization process at 820 °C, to successfully generate a LATP modification shell at the surface of LNMO. The LATP modification shell could not only optimize the morphology of LNMO including the limitation of particle growth and control of crystalline orientation, but also realize ion doping during the co-crystallization process. By tuning the LATP contents, the 2 wt% LATP modification is found to be the most effective at balancing the interfacial stability and Li+ diffusion kinetics of LNMO, as well as enhancing its rate capability and capacity retention at high temperatures. As a result, the 2 wt% LATP-modified LNMO cathode exhibits a high reversible capacity of 84.8 mA h g−1 after 500 cycles with a capacity retention of 68.9%, and a superior rate capability (102.0 mA h g−1 at 20 C) at room temperature. Moreover, this electrode also delivers a good capacity retention of 85.7% after 100 cycles at 55 °C, which is ascribed to the stabilized interface with a LATP protective layer.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Youjie Sheng,Haoyu Li,Hanling Zhang,Yang Li,Baohu Li,Li Ma
Nanoparticles (NPs) and polymers are frequently combined to improve firefighting foam performance, but whether the effect of polymer addition depends on NP type remains unclear. In this study, Al(OH)₃ and β-Al₂O₃ NPs were separately incorporated into an FS-50/APG-0810 surfactant system and further combined with xanthan gum (XG) or guar gum (GG). The foaming ability, rheology, and drainage resistance of the resulting foams were systematically compared, while crossover strain and modulus of cohesion (MOC) were used to characterize deformation tolerance and resistance to structural breakdown. Polymer addition produced opposite effects in the two NP systems: XG and GG generally weakened the rheological properties and drainage resistance of Al(OH)₃ NP-stabilized foams, but enhanced those of β-Al₂O₃ NP-stabilized foams. Selected β-Al₂O₃ formulations were further evaluated for fire suppression performance. Among the tested formulations, the β-Al₂O₃/XG foam achieved the shortest extinguishment time of 22 s, whereas the β-Al₂O₃/GG foam exhibited the longest burn-back time of 1243 s. Unlike previous studies focusing on individual NP or NP/polymer systems, this work demonstrates that polymer-induced foam regulation is strongly dependent on NP type and that nanoparticle/polymer combinations do not necessarily produce universal synergistic effects. These findings provide a basis for rational NP/polymer matching to balance rapid extinguishment and burn-back resistance in firefighting foam formulation. Download: Download high-res image (243KB) Download: Download full-size image
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TALANTA
·
2020
·
IF 5.339
Xu Zhi,Ying Qian
Hypochlorous acid (HOCl/ClO − ), a reactive oxygen species (ROS), plays an indispensable role in the human immune system. In this article, a novel red-emission phenothiazine fluorescent protein chromophore RFP-Ptz was developed for the detection of HOCl in cells. In the presence of HOCl, the fluorescence signal 610 nm rose gradually and reached its plateau with 15-fold enhancement; the fluorescence quantum yield increased from 0.01 to 0.12. The electrophilic substitution of Cl + towards phenolic hydroxyl group made the probe exhibited a high selective fluorescence response with a limit of detection (LOD) of 6.76 × 10 −7 M over other analyte species and ROS. This recognition mechanism of oxygen‒chlorine bond (O–Cl) formation has confirmed by HRMS . Finally, the RFP-Ptz can be used to response HOCl with low cytotoxicity and good biocompatibility (MTT cytotoxicity assay > 89.5%). The biocompatible RFP-Ptz was successfully applied to the fluorescence imaging of HOCl-related in SGC-7901 cells.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jinqiu Ye,Tiancheng Ge,Xin Qu,Mohamedazeem M. Mohideen,Ce Wang,Ping Hu,Yong Liu
The widespread application of aqueous zinc-ion batteries (AZIBs) is hindered by anode dendrite formation and side reactions, reducing cycling life and performance. This study introduces Bi-Bi₂O₃-loaded carbon nanofibers (Bi-Bi₂O₃@CNF) with hierarchical hollow structures and surface grooves fabricated via electrospinning, thermal treatment, and in situ growth. Experimental characterization and density functional theory reveal that the high surface area and fibrous network of Bi-Bi₂O₃@CNF enhance electron transport and electrolyte distribution, effectively reducing ohmic resistance and concentration polarization. This “Spatial Effect” provides ample space for uniform Zn deposition. Additionally, the in situ-grown Bi-Bi₂O₃, pyridinic nitrogen, pyrrolic nitrogen, and C─O─Bi bonds induce strong zinc affinity and electronegativity, generating an “Electrostatic Confinement Effect” that amplifies the “spatial effect” into a “Dual-Confinement Effect.” This synergy ensures uniform Zn deposition, suppresses dendrites and side reactions, and mitigates polarization. Compared to pure Zn anodes, Bi-Bi₂O₃@CNF reduces polarization overpotential by 17.6%, increases hydrogen evolution overpotential by 11.52%, and maintains a Coulombic efficiency of 98.8% for over 200 h. In full cells, Zn@Bi-Bi₂O₃@CNF//MnO₂ achieves 73.0% capacity retention after 1000 cycles at 1000 mA g⁻¹. This work provides a promising strategy for high-efficiency, durable, and safe AZIBs and offers valuable insights into the design of advanced aqueous energy storage materials.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Cong Wan,Jianwen Zhang,Honglei Zhang,Min Liu,Yiming Li,Zijun Yan,Chengheng Pang,Tao Wu
The catalytic reduction of CO₂ into valuable chemicals and fuels is a promising strategy for mitigating global carbon emissions. This study explores the synergistic co-reduction of CO₂ and H₂O using nanoscale zero-valent iron (NZVI) as a dual-function catalyst. Under light irradiation at 300 °C, the CO₂ reduction rate increased by more than 10-fold compared to dark conditions, demonstrating significant photothermal synergy. The study reveals that NZVI undergoes a phase transformation, where Fe₃O₄ functions as a photocatalyst while Fe 0 serves as an electron donor, enabling a unique dual-functionality that facilitates efficient electron transfer. The addition of 10 vol% H₂ stabilizes the reaction, leading to a higher and more consistent CO yield. When investigating the simultaneous reduction of CO₂ and H₂O, we discovered competitive adsorption and reaction pathways that significantly influence product distribution. In-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and density functional theory (DFT) calculations revealed three distinct mechanistic pathways for CO₂ conversion: direct C O bond cleavage, a carboxylate-mediated pathway and bicarbonate-mediated pathway, with the carboxylate and bicarbonate pathways being uniquely promoted by H and OH from H₂O dissociation. The addition of H₂O into the CO₂ and H₂ reaction significantly enhanced CH₄ generation due to the extra H source from H₂O dissociation. These findings offer valuable insights into the competitive mechanistic pathways of CO₂-H₂O co-reduction and contribute to the design of more efficient iron-based catalysts for sustainable CO₂ conversion and water splitting in energy and environmental applications.
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ACS Catalysis
·
2025
·
IF 13.1
Junjie Zhu,Hongyan Zhao,Qi Wang,Haijiao Kong,Xiaoyue Tu,Yu Zhang,Zhi-Hui Lv,Zhenbao Zhang,Xiangjian Liu,Zhen Xue,Lei Shi,Xin-Ming Hu,Jiawei Zhu,Heqing Jiang,Yongfa Zhu
Sn-based catalysts feature significant potential for acidic CO2 electroreduction (CO2RR) to HCOOH, but encounter unsatisfactory selectivity and poor stability, especially at high current densities. Here, we report In3+-induced In–O–Sn superexchange and oxygen vacancies synergistically enabling ampere-level, selective, and stable CO2-to-HCOOH electroreduction over Sn-based perovskite oxides in a strong acid. For the proof-of-concept catalysts of SrSn1–xInxO3−δ (x = 0.05, 0.1, and 0.2), In3+ introduction not only generates additional oxygen vacancies but also engenders marked In–O–Sn superexchange. This superexchange modulates electronic structures, including the upward-shifted band center (e.g., Sn 5p) and the strengthened Sn–O bond covalency. In HCOOH production, relative to the parent SrSnO3, the SrSn1–xInxO3−δ series demonstrate enhancements in activity and selectivity (more pronounced with In3+ content) while also featuring significantly boosted stability. In strong acid (pH = 1), SrSn0.8In0.2O3−δ achieves high HCOOH selectivity of 91.2% at 1 A cm–2 and a single-pass carbon efficiency of up to 81.0%, together with a steady operation over 80 h, outperforming previously reported Sn-based catalysts. Our experiments and theoretical calculations attribute these performance improvements to the following factors: the superexchange-shifted band centers and the additional oxygen vacancies synergistically facilitating *CO2 protonation to *OCHO; the superexchange-strengthened Sn–O bond covalency stabilizing the Sn–O lattice.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Zhichen Liu,Tiantian Xiao,Xinru Wu,Cejun Hu,Xue Feng Lu,Hongwei Zhang,Jiujun Zhang,Xiaojun Bao,Pei Yuan
2,5-Furandicarboxylic acid (FDCA), a crucial precursor for synthesizing biodegradable polymers as a sustainable alternative to petroleum-derived plastics, has garnered significant interest for its production via electrolysis. However, this approach remains hindered by the inherent weak reactant-catalyst adsorption and sluggish interfacial kinetics. Herein, we report Cu-incorporated NiFe Prussian blue analogues (PBA) that enable rapid electrooxidation of 5-hydroxymethylfurfural (HMF) to FDCA with nearly 100 % conversion, selectivity, and Faradaic efficiency, even at an industrial-scale concentration of 100 mM. In situ Raman and electrochemical characterizations reveal that Cu-incorporation elongates Ni-N bonds and accelerates their reconstruction into defect-rich Ni 2+ -OH species, which undergo deprotonation to form highly active Ni 3+ -O species. X-ray technology and theoretical calculations show that the electronegative Cu 2+ prompts a shift of the d-band center of neighboring Ni atoms toward the Fermi level, thereby enhancing the adsorption of both hydroxyl (-OH) and aldehyde (-CHO) groups in HMF and thus accelerating electrooxidation of HMF to FDCA. Practical applicability using a continuous flow electrolyzer demonstrates the potential for industrial application, achieving a kilogram-scale FDCA production with 99 % purity and a yield exceeding 90 % over 1200 h. This work realizes the valence regulation of active sites in PBA through a cation engineering approach and verifies its feasibility in sustainable biomass electro-oxidation upgrading.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 7
·2793-2799
·
IF 3.269
Guangyin Fan,Xiaojing Li,Yuling Ma,Yun Zhang,Jiangtao Wu,Bin Xu,Ting Sun,Daojiang Gao,Jian Bi
Exploring the applications of two dimensional layered Ti3C2X2 (X = OH, F) is of great importance because of its excellent physical and chemical properties. Herein, we report the synthesis of the bimetallic catalyst PtyCo1−y/Ti3C2X2via a facile one-pot approach using Ti3C2X2 as the support. The in situ synthesized PtyCo1−y/Ti3C2X2 is subsequently applied as a catalyst for hydrogen evolution from the hydrolysis of ammonia borane at 25 °C. Experimental results show that Pt0.08Co0.92/Ti3C2X2 exhibits excellent catalytic activity for the hydrolysis of ammonia borane with a high hydrogen generation rate of 100.7 L H2 (min gPt)−1 and turnover frequency of 727 mol H2 (min molPt)−1 because of the synergistic effect between Pt and Co. Moreover, Pt0.08Co0.92/Ti3C2X2 could be recovered from the reaction mixture by a magnet and recycled at least seven times, thus showing its high recycling efficiency.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Haixuan Liang,FeiFei Wang,ShuiQing Ji,Bihong Chen,Libo Yang,Xinpeng Wang
Precise separation and dynamic enrichment of Sn(IV) from complex strongly acidic waste liquids are important for strategic metal recovery, but remain challenging because high acidity and competing ions can severely weaken adsorption selectivity. Herein, a covalent phosphazene-based silica composite adsorbent, CPP-O/SiO 2 , was prepared through the in situ solvothermal polymerization of cyanuric acid and hexachlorocyclotriphosphazene on porous SiO 2 . The SiO 2 support preserved a regular spherical morphology and favorable column adaptability, while the CPP-O network supplied abundant N/O coordination sites. CPP-O/SiO 2 retained high Sn(IV) removal efficiencies above 95% in 0.5–1 M HNO 3 and achieved approximately 98% Sn(IV) removal in a simulated acidic multi-ion matrix mimicking waste printed circuit board (WPCB) leachate/high-level liquid waste (HLLW). Adsorption equilibrium was reached within 120 min, and the saturated adsorption capacity reached 188.41 mg/g at 318 K. Fixed-bed column experiments further demonstrated selective dynamic retention and enrichment of Sn(IV) from simulated HLLW, giving an enrichment factor of approximately 116 after elution with 0.1 M NaOH and maintaining stable performance over eight adsorption–desorption cycles. FT-IR, XPS, and DFT analyses revealed that Sn(IV) capture was mainly governed by synergistic coordination involving O and N sites, especially Sn O interactions. This work provides a robust covalent composite adsorbent for selective Sn(IV) recovery from strongly acidic multi-ion media.
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危险品化学品经营许可证（带存储）