FOOD HYDROCOLLOIDS
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2024
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IF 11
Bo Qiu,Huijuan Jing,Shengyi Han,Shuobo Zhang,Furong Ba,Lvwan Xu,Siyuan Xie,Wang Gao,Yilun Huang,Hang Xiao,David Julian McClements,Björn Berglund,Lanjuan Li,Mingfei Yao
Faecalibacterium prausnitzii ( F. prausnitzii ) exhibits a variety of biological functions that make it suitable for use as a next-generation probiotic . However, its high sensitivity to oxygen and digestive fluids currently limits its application. Riboflavin is known to support the growth of F. prausnitzii in oxygen environments, but it is important that it is in close proximity to the probiotics. Layer-by-layer assembly can be used to form protective coatings around probiotics, which can protect them from adverse environmental conditions. Moreover, riboflavin can be conjugated to these coatings, thereby increasing its efficacy by bringing it close to probiotic surfaces. In this study, we therefore evaluated the potential of electrostatic layer-by-layer assembly to protect F. prausnitzii by coating them with riboflavin-alginate and glycol-chitosan layers. Initially, we showed that riboflavin could be successfully conjugated to alginate, with a grafting ratio of around 4.35%. Then, the layer-by-layer method was used to coat F. prausnitzii using cationic glycol chitosan and anionic riboflavin-alginate. The coating formed was found to have a thickness of approximately 18.5 nm. Encapsulation did not adversely affect the growth of F. prausnitzii , but it significantly enhanced its resistance to oxygen and digestive fluids. The encapsulated probiotic was shown to have enhanced mucoadhesive properties using an in vitro intestinal monolayer model. Furthermore, the encapsulated probiotics colonized the colons of rats for longer than nonencapsulated ones. These results show that coating F. prausnitzii with riboflavin-rich biopolymer layers improves its resistance to oxygen and digestive fluids, and enhances its mucoadhesion and colonization properties, which should enhance its potential as an orally administered probiotic.
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高影响因子
Journal of Materials Research and Technology-JMR&T
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2024
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IF 6.2
Qian Zhang,Jiawei Li,Qingdi Qu,Shuang Pan,Kunyang Yu,Yushi Liu
The challenge of precisely regulating temperature during the photo-thermal bone promotion remains unresolved. Phase change material (PCM), capable of undergoing a phase transition at a specific temperature, offers a solution by photothermal temperature regulation through the storage and release of heat. This study incorporated biocompatible polyethylene glycol (PEG) with specific phase transition points as PCM. A phase change hydrogel scaffold was then synthesized through semi-crosslinking PEG with calcium-ion-chelated sodium alginate (SA) acting as the structural framework. Additionally, the newly developed graphene oxide (GO) modified composite scaffolds (GO-PHSC), featuring 0.5 wt% GO, not only demonstrated outstanding photothermal conversion efficiency and an optimal phase change temperature (42.2 °C) but also exhibited desirable values for latent enthalpy (100 J/g) and latent heat recovered (LHR) (93.3%). Moreover, the form-stability test demonstrated the PCM scaffolds' exceptional resistance to leakage and maintenance of shape stability even at elevated temperatures (70 °C). Beyond achieving passive temperature control in photothermal therapy, experimental findings highlighted that the phase change hydrogel, incorporating calcium ions and GO, met various requirements such as physicochemical properties, microstructure, mechanics, mineralization, biocompatibility, and cell affinity. These collective attributes suggest that GO-PHSC emerges as a promising scaffold composite candidate for temperature-controlled photothermal therapy in bone regeneration.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Xingtian Zhang,Boyuan Yang,Yong Zhang,Xiaoyu Du,Liwei Hou,Tao Zhou,Hongtao Chu,Wenhui Ma
Polyethylene glycol (PEG) plays a key component in functional materials due to its exceptional water solubility, biocompatibility, and chemical versatility. However, the absence of π-conjugation in PEG's molecular structure prevents fluorescence emission, limiting its utility in fluorescent material applications. In this study, a novel PEG-based sensor ( P ) was synthesized by covalently linking PEG to a coumarin fluorophore. P exhibited significantly enhanced green fluorescence compared to unmodified PEG. It allows rapid (~5 s), highly sensitive, and specific copper (Cu 2+ ) detection through fluorescence quenching, achieving 97.40% quenching efficiency with a 0.52 nM detection limit. Nuclear magnetic resonance ( 1 H NMR) titration, inductively coupled plasma mass spectrometry (ICP-MS), and density functional theory (DFT) calculations confirmed the detection mechanisms, revealing the P –Cu 2+ interaction mechanism. Furthermore, fluorescence imaging results demonstrated that P exhibited a fluorescence quenching response upon the addition of Cu 2+ to HeLa cells, providing a potential new method for detecting Cu 2+ in vivo. In addition, the incorporation of a smartphone color recognition application enables approximate quantification of Cu 2+ concentrations in test samples. This approach not only extends PEG's applicability in sensing and smart technology integration but also offers an efficient, low-cost solution for on-site Cu 2+ detection.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Jingwen Ma,Ruiting Wang,Jinhao Liu,Ying Tian,Junbin Li
Electrocatalytic nitrate-to-ammonia reduction (NO 3 RR) offers a sustainable alternative to fossil-fuel-dependent Haber-Bosch processes. However, limited NH 3 yield and unsatisfactory faradaic efficiency hindered the development of NO 3 RR. Herein, a unique Ru/V o -NiCo 2 O 4 heterostructure is reported as an effective NO 3 RR catalyst, in which the NiCo 2 O 4 site preferentially adsorbs nitrate, while the Ru site provides active H species for the subsequent reduction process. Structural characterization reveals that enrichment of ruthenium on the surface of nickel-cobalt oxide catalysts by electrochemical deposition not only promotes the generation of abundant oxygen vacancies, but also promotes the charge redistribution and the formation of built-in electric field inside the catalysts, which improves the electrical conductivity as well as promotes the generation of a large number of active sites in the NO 3 RR and EGOR processes. Ru/V o -NiCo 2 O 4 exhibits excellent bifunctional catalytic activity for NO 3 RR and ethylene glycol oxidation reaction (EGOR). Specifically, in the electrocatalytic nitrate reduction for ammonia production, the Faraday efficiency reached up to 95.14 % with an ammonia yield of 17.20 mg h −1 cm −2 at - 0.3 V. The catalyst also performed well for the oxidation of ethylene glycol, with a voltage of only 0.469 V required to achieve a current density of 50 mA cm −2 . After continuous electrolysis for 12 h at a current density of 100 mA cm −2 , the formate Faraday efficiency reaches as high as 88 %. Moreover, utilization EGOR instead of OER to form NO 3 RR||EGOR full cell not only realize energy-saving NH 3 production, meanwhile achieving value-added formate product. For the constructed NO₃RR||EGOR full cell, its formate Faraday efficiency reaches up to 94 % after continuous electrolysis for 12 h at a current density of 100 mA cm −2 . This work provides a strategy to achieve highly efficient, energy-saving ammonia synthesis via rational design of bifunctional electrocatalysts and construction of a co-electrolysis system, which carries substantial significance for both energy and environmental sectors.
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JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Feng Li,Luan Jishuang,Zhang Wenjuan,He Yangfan,Wang Lulu,Mi Guangxin,Qv Dehu,Chu Qian-Qian,Han Fei,Cheng Bo
Phase change materials (PCMs) can efficiently absorb and release energy while keeping the temperature constant, and thus exhibiting great potential in thermal management applications. However, issues such as liquid phase leakage and poor thermal conductivity of PCMs, particularly prominent in organic ones, have limited their practical application. In this work, we employed polyethylene glycol (PEG) with the phase change temperature of 61.72 °C as PCMs. A poly(phenol-amine) was synthesized via the Schiff base reactions or Michael-type additions using low-cost Catechol and Diethylenetriamine, and was applied to modify the surface of melamine foam (MF). The abundant polar groups and aromatic rings in the poly(phenol-amine) enable strong interactions with both MF and PEG. Additionally, MXene was incorporated to further improve the thermal conductivity of the composite phase change materials (CPCMs). The results demonstrated that the modified MF/MXene/PEG based CPCMs showed negligible leakage when tested at 80 °C for 1 h. They also exhibited an enhanced thermal conductivity of 0.55 ± 0.01 W/m·K with an enthalpy value of 186.4 J/g. Moreover, after 100th thermal cycling and reprocessing, the crystallization behavior and phase transition capability of the CPCMs remained almost unchanged. Furthermore, the introduction of MXene markedly enhanced CPCMs’ light absorption efficiency. These findings indicate that the prepared CPCMs, with their excellent thermal performance, hold substantial potential in energy storage and thermal management applications. Graphical
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RSC Advances
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2014
·Vol. 4
·期 78
·41588-41596
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IF 3.708
Lixin Yang,Xiuli Hu,Weiqi Wang,Shi Liu,Tingting Sun,Yubin Huang,Xiabin Jing,Zhigang Xie
Y-shaped amphiphilic block copolymers, (methoxy-poly(ethylene glycol))2-block-poly(L-glutamic acid) ((mPEG)2-PGA) and its precursor (methoxy-poly(ethylene glycol)2-block-poly(γ-benzyl-L-glutamate) ((mPEG)2-PBG), were prepared in three steps: (1) macroinitiator (methoxy-poly(ethylene glycol))2-NH2 ((mPEG)2-NH2) was synthesized by coupling two methoxy-poly(ethylene glycol)s with serinol and diisocyanate. (2) (mPEG)2-PBG was synthesized by ring opening polymerization of γ-benzyl-L-glutamate-N-carboxyanhydride initiated with the macroinitiator ((mPEG)2-NH2); (3) the protective benzyl groups in (mPEG)2-PBG were removed to obtain (mPEG)2-PGA. The properties of both (mPEG)2-PBG and (mPEG)2-PGA were characterized by 1H NMR, FT-IR, GPC, and DLS. In aqueous solution (mPEG)2-PBG tends to form more stable micelles compared to linear mPEG-PBG copolymer. The size of (mPEG)2-PBG decreases with increasing length of hydrophobic PBG in (mPEG)2-PBG. Paclitaxel and cisplatin were grafted onto (mPEG)2-PGA to form (mPEG)2-PGA-PTX (MPTX) with a grafting ratio of near 90% and (mPEG)2-PGA-Pt (MPt) conjugates with a loading efficacy of 15% (w/w). MPTX can greatly improve the solubility of PTX. Both conjugates can self-assemble into micelles with a mean diameter of about 50 nm and show enhanced anti-cancer activity against MCF-7, HeLa, and SMMC cell lines. The in vivo anticancer evaluation in mice shows MPt showed a desirable antitumor activity and allowed us to deduce the system toxicity. Therefore, both MPTX and MPt have a great potential as a polymer drug in cancer chemotherapy.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2022
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IF 4.326
Bingxue Huang,Yi Zhou,Lingfei Wei,Rui Hu,Ximu Zhang,Phil Coates,Farshid Sefat,Wei Zhang,Canhui Lu
Continuous liquid interface production (CLIP) has been regarded as a revolutionary three-dimensional (3D) printing technology capable of continuously creating complex structures with both high resolution and fast speed. However, it highly relies on the UV light source, which is costly and not applicable for some end uses. Herein, a novel photocurable ink containing biocompatible poly(ethylene glycol) diacrylate (PEGDA) and graphene oxide (GO) was demonstrated in successful CLIP 3D printing with a cheap visible light source. GO not only works as a photoabsorber for significant enhancement of visible light absorbance to realize high-resolution CLIP printing but also reinforces the polymer matrix to achieve high mechanical properties of the final products. Of note, the CLIP-printed microlattices with a microtexture as thin as 100 μm exhibited fantastic superelastic features coupled with outstanding mechanical performance. Remarkably, the microlattice prints with custom geometries could survive from 90% compressive strain, indicating their stunning superelasticity.
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高影响因子
Arabian Journal of Chemistry
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2022
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IF 6.212
Peipei Wang,Qingcheng Wang,Tian Liu,Jiaqi Guo,Yongcan Jin,Huining Xiao,Junlong Song
Bovine serum albumin (BSA), polyethylene glycol (PEG) and lignosulfonate (LS) have been extensively employed as synergistic agents in lignocellulose saccharification. Nevertheless, the promoting mechanisms have not been fully understood and there are a number of controversial opinions existed. All attention has been paid to the interactions between respective additive and substrate. However, rarely attention has been paid to the interactions between additives and enzymes (cellulase from Trichoderma reesei in this investigation). This interaction is actually more important since cellulase interacts with the additives before it contacts with substrate. Therein, Quartz crystal microbalance with dissipation monitoring (QCM-D), surface plasma resonance (SPR) and small angel X-ray scattering (SAXS) were incorporated to study the interaction between enzyme and additives. The results showed synergistic agents have different interaction modes with cellulase. BSA and LS can form complexes with cellulase and the formed complexes prevent them from nonproductive binding by residue lignin; what’s more, the cellulase-BSA complexes improve the hydrolytic capability of pristine enzyme whereas cellulase-LS complexes reduce. PEG prevents the unproductive binding of cellulase to the residual lignin by forming a thin layer that actually acts as a steric hindrance to the residual lignin. This investigation helps us to understand the sophisticated interactions among the components in the complicated enzymatic system, especially the interactions between enzymes and synergistic agents. It will be helpful in the design and utilization of synergistic additives in the lignocellulose biorefinery process as well.
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高影响因子
ACS Omega
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2021
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IF 3.512
Jun Yu,Jiezhen Liang,Xiaopeng Chen,Linlin Wang,Xiaojie Wei,Youqi Li,Yanmin Qin
Nickel and tungsten, combined with copper, were incorporated into a magnesium aluminum spinel to form a multifunctional catalyst (Ni–W–Cu/MgAl2O4). Characterization results suggested that the adjacent Cu not only facilitated the reduction of W6+ to W5+ with substantial oxygen vacancies but also promoted the reducibility of the Ni species. Besides, the incorporation of Ni, W, and Cu into the support enhanced the catalytic acidity, as well as the L acid sites. The catalyst exhibited a strong synergistic effect between the three metals and the support, resulting in higher catalytic activity for the one-pot hydrogenolysis of cellulose to ethylene glycol. High cellulose conversion (100%) and ethylene glycol yield (52.8%) were obtained, even under a low H2 pressure of 3 MPa.
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PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2022
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IF 3.119
Yingmin Yu,Xiaocheng Zhang,Lingxiao Yi,Min Li,Fangyu Zhang,Jiajun Wei
Liquid–liquid equilibrium (LLE) data of ternary systems {2-ethyl-1-hexanol + ethylene glycol + water/n-heptane} were measured at 298.2, 308.2, and 318.2 K under 101.3 kPa. The distribution coefficient (D) and selectivity coefficient (S) of the systems were calculated to analyze the extraction ability of the two extractants that separate 2-ethyl-1-hexanol and ethylene glycol. Meanwhile, the NRTL and UNIQUAC activity coefficient models were used to correlate the experimental data and the different model parameters were obtained by data regression. The root-mean-square deviation (RMSD) between the calculated and experimental values was less than 0.96%, indicating that both models have a reasonable correlation with the experimental data of the ternary system and can accurately predict the experimental data. GUI-MATLAB has validated the binary interaction parameters.
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高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2022
·Vol. 48
·期 6
·2489-2507
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IF 3.134
Shao Lingling,Zhou Jiancheng,Zhang Ming,Zhang Qianyi,Wang Nan,Zhu Fengfan,Wang Ke,Li Naixu
The one-pot catalytic conversion of cellulose into ethylene glycol (EG) is an attractive way of biomass utilization. However, low-cost, efficient, and stable catalysts are the premise and research challenges of industrial application. Herein, the magnetic recyclable W–Ni@C catalyst was synthesized by in-situ pyrolysis of Ni-MOFs impregnated with ammonium metatungstate. Compared with the Ni-W bimetallic catalysts prepared by the impregnation method and the sol–gel method, the W–Ni@C catalyst for cellulose hydrogenolysis reaction can achieve a higher ethylene glycol yield (67.1% vs 43.3% and 42.6%) and 100% of cellulose conversion rate. The uniformly dispersed Ni nanoparticles and abundant defective WO x were formed in a reductive atmosphere generated in pyrolysis of Ni-MOFs, which was indispensable for the hydrogenolysis of cellulose into EG. Besides, the hierarchical porous carbon derived from organic ligands in Ni-MOFs reduces the mass transfer resistance while confining Ni nanoparticles and WO x to prevent their leaching, effectively enhancing the stability of the W–Ni@C catalyst. Therefore, the remarkable catalytic performance, the simple and effective recovery method as well as satisfying stability would make W–Ni@C become a promising catalyst for the conversion of cellulose to EG. Graphical abstract
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2016
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IF 2.74
Tianxiang Zhao,Xianshu Qiao,Qiang Xu,Xiaohong Xie,Xionghui Wei,Jianbin Zhang
Isothermal gas-liquid equilibrium (GLE) data were measured for dilute SO 2 in the binary system polyethylene glycol 600 (PEG) + H 2 O at T = 298.15 K and p = 122.66 kPa, in which SO 2 partial pressures were calculated in the range of (0 to 140) Pa. Based on the fitting GLE data, Henry’s law constants ( H x ) of dilute SO 2 in various PEG (1) + H 2 O (2) mixtures were obtained. Meanwhile, densities, viscosities, and surface tension of the binary system PEG (1) + H 2 O (2) were also measured over the whole concentration range at T = (298.15 to 323.15) K. From density and viscosity data, the excess molar volumes ( V m E ) and viscosity deviations (Δ η ) were calculated. Based on kinematic viscosity data, the enthalpy of activation for viscous flow (Δ H *) and entropy of activation (Δ S *) for the viscous flow were also obtained. Additionally, the important intermolecular interaction among PEG, H 2 O and SO 2 were investigated using UV-Vis, FTIR, and 1 H NMR spectroscopic techniques. Spectral results showed that the interaction between PEG and H 2 O resulted from hydrogen bonding , and the interaction of PEG with SO 2 resulted from both the O → S charge-transfer interaction and intermolecular hydrogen bonding.
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高影响因子
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