JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Ruiying Li,J. Paul Chen,Viatcheslav Freger
Metal-organic framework-based mixed matrix membranes (MOF-MMMs) become increasingly attractive in several applications (e.g., water treatment and gas separation) due to the excellent functionality. However, they have several common problems such as unsatisfactory performance due to lower MOF loading and thicker coating layer. Herein, a new fabrication strategy was proposed and tested in this reported study: the selected MOF(s) is/are deposed on porous substrate(s) by filtration to form dense layers, while their interstices are simultaneously sealed by in-situ polymerization of monomers percolating through the MOF layer. This approach allows a high MOF loading and controlled thickness of MOF-MMM. Zeolitic imidazolate framework-8 (ZIF-8) was used as a model MOF along with two acrylic monomers , hydrophobic butyl methacrylate (BMA) and mildly hydrophilic glycidyl methacrylate (GMA), resulting in 42% ZIF-8 loading. The membranes demonstrated rejection of Congo Red dye up to 97% and 60% for ZIF-8/BMA and ZIF-8/GMA membranes, respectively, emphasizing the advantage of more hydrophobic and dense poly-BMA as a more efficient sealant compared to more open and porous poly-GMA. It is also found that optimization of MOF and monomer concentrations for MMM preparation is critical and could greatly improve both dye rejection and water permeance. The results demonstrate the potential of the new approach for controlled preparation of selective MOF MMMs for water treatment and other membrane processes.
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Small
·
2023
·Vol. 19
·期 50
·2305134
·
IF 13.3
Yifan Liu,Jiazuo Zhou,Yudong Li,Ziyao Wang,Xiaohan Sun,Haiyue Yang,Chengyu Wang
Phase change materials (PCMs) have great prospects in thermal management applications because they can store and release latent heat. However, they are not suitable for on-demand heating as they can only release heat once. Herein, this work reports the intermittent exothermic of PCMs based on a supersaturated salt solution, exhibiting fully controlled long-term storage of energy, releasing and suspending heat on demand. Due to the high energy barrier, it is difficult for the supersaturated salt solution to nucleate; thus, it can store energy for a long time. Contact with seeds or other foreign objects can destroy the metastable state of the supersaturated salt solution and promote the formation of crystal nuclei, enabling crystallization and heat release on demand. The release of crystallization heat can be interrupted using scissors dip in water. Additionally, self-healing behavior allows it to be recycled and last longer, due to the presence of Fe 3+ , inducing strong dynamic reversible non-covalent crosslinking through metal coordination bonds. Furthermore, the hydrated salts gels are applied for thermal management of underfloor radiant heating system, demonstrating four types of intermittent exotherms sequences amazingly. Further, the intermittent exothermic hydrated salts gels provide a more user-friendly thermal management of underfloor radiant heating systems.
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Small
·
2023
·Vol. 20
·期 2
·2306464
·
IF 13.3
Yijie Wu,Xin Wang,Tiantian She,Taozhu Li,Yunheng Wang,Zhe Xu,Xin Jin,Haiou Song,Shaogui Yang,Shiyin Li,Shicheng Yan,Huan He,Limin Zhang,Zhigang Zou
Transition metals are excellent active sites to activate peroxymonosulfate (PMS) for water treatment, but the favorable electronic structures governing reaction mechanism still remain elusive. Herein, the authors construct typical d-orbital configurations on iron octahedral (Fe Oh ) and tetrahedral (Fe Td ) sites in spinel ZnFe 2 O 4 and FeAl 2 O 4 , respectively. ZnFe 2 O 4 (136.58 min −1 F −1 cm 2 ) presented higher specific activity than FeAl 2 O 4 (97.47 min −1 F −1 cm 2 ) for tetracycline removal by PMS activation. Considering orbital features of charge amount, spin state, and orbital arrangement by magnetic spectroscopic analysis, ZnFe 2 O 4 has a larger bond order to decompose PMS. Using this descriptor, high-spin Fe Oh is assumed to activate PMS mainly to produce nonradical reactive oxygen species (ROS) while high-spin Fe Td prefers to induce radical species. This hypothesis is confirmed by the selective predominant ROS of 1 O 2 on ZnFe 2 O 4 and O 2 •− on FeAl 2 O 4 via quenching experiments. Electrochemical determinations reveal that Fe Oh has superior capability than Fe Td for feasible valence transformation of iron cations and fast interfacial electron transfer. DFT calculations further suggest octahedral d-orbital configuration of ZnFe 2 O 4 is beneficial to enhancing Fe-O covalence for electron exchange. This work attempts to understand the d-orbital configuration-dependent PMS activation to design efficient catalysts.
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Science China-Technological Sciences
·
2022
·Vol. 65
·期 5
·1029-1042
·
IF 3.903
Shi MingYue,Jiang LiJie,Yu ChaoJie,Dong XiaoRu,Yu QingYu,Yao MengMeng,He ShaoShuai,Yue ZhiWei,Yao FangLian,Zhang Hong,Sun Hong,Li JunJie
Currently, it is a challenge to develop hemostatic materials with high water absorption capacity and anti-fatigue properties for quickly preventing massive hemorrhage from arteries and visceral organs. A series of polyacrylic acid/chitosan (PAA/CS) cryogels were prepared by a cryostructurization technique to improve mechanical performance and hemostatic efficiency of chitosan (CS). In this system, the chemically cross-linked PAA network was used as a framework to improve water absorption behaviors and mechanical strength. The CS network was co-blended by hydrogen bonding and electrostatic interactions, both of which synergistically promoted hemostasis. These cryogels had high porosity (>94%), rapid water absorption rate (<3 s), high blood absorption capacity (>2000%), outstanding mechanical strength, and fatigue resistance. Moreover, the results of cytotoxicity and hemolysis demonstrated that the cryogels had good biocompatibility. Notably, the PAA/CS cryogels exhibited superior whole blood coagulation ability and red blood cell and platelet adhesion ability compared to those of commercial hemostatic dressing (gauze, gelatin sponges, and CS sponges). Based on these results, mouse femoral artery hemorrhage models and liver hemorrhage models were prepared to investigate the hemostatic ability of the prepared PAA/CS cryogels. Results suggested that the hemostatic ability of PAA 5 /CS cryogels was superior to that of commercial hemostatic materials. Therefore, the PAA/CS cryogels showed potential application in preventing massive hemorrhage from arteries and visceral organs.
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Antioxidants
·
2023
·Vol. 12
·期 7
·1448
·
IF 7
Kongming Fan,Yan Li,Qiaofeng Fu,Jinmin Wang,Yong Lin,Linyu Qiu,Li Ran,Junli Yang,Chunyan Yang
Active fractions and constituents with antioxidant and lipid-lowering activities were investigated using bio-assay-guided isolation and identification. The data showed that the antioxidant fraction ofA. cepawas AC50%, the main constituents of which were quercetin and isoquercitrin, by way of both ultra-high performance liquid chromatography–mass spectrometry (UPLC-MS) and bio-assay-guided purification and elucidation. Similarly, the lipid-lowering active fraction ofA. cepawas AC30% with the main constituents of 3,4-dihydroxybenzoic acid and quercetin 3,4′-O-diglucoside. Also, bio-assay-guided isolation led to the isolation and identification of five known compounds with a purity of more than 98%, and quercetin was both the best free radical scavenger and lipid-lowering constituent. Moreover, the mechanism of the lipid-lowering effect of AC30% might be its reduction in mRNA expression levels of sterol regulatory element binding protein 2 (SREBP2) and FAS gene in lipid synthesis. Otherwise, reducing the mRNA expression level of lipid synthesis genes, including SREBP1, SREBP2, fatty acid synthetase (FASN),β-Hydroxyβ-methylglutaryl-CoA (HMGCR), stearoyl CoA desaturase 1 (SCD1), and increasing the mRNA expression level of lipid decomposition gene, such as carnitine palmitoyl transferease-1 (CPT1), might be involved in the lipid-lowering activity of quercetin. This study suggested thatAllium cepamight be used to prevent and treat oxidative stress and dislipidemia-related disorders, including NAFLD.Keywords:Allium cepa;lipid lowering;antioxidant;effective fractions;active constituents
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JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
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2013
·
IF 2.487
Shian Zhong,Yanyue Kong,Ling Zhou,Chengyun Zhou,Xiaona Zhang,Yan Wang
In this study, we developed an efficient conversion process of dihydromyricetin to myricetin from Ampelopsis grossedentata extracts. The content of myricetin increased from 2.38% to 85.57%, demonstrating the successful dehydrogenation of dihydromyricetin. Molecularly imprinted polymers (MIPs) were prepared by surface imprinting method using silica microspheres as the support matrices and myricetin as template. The MIPs were applied for the selective adsorption of myricetin. The chemical structure of the MIPs was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. Static, dynamic and selective adsorption experiments showed that the MIPs exhibited good adsorption ability, rather fast template rebinding kinetics, and appreciate selectivity over structurally related compounds. Accordingly, the MIPs were applied as the selective sorbent in SPE to purify myricetin obtained through dehydrogenation, followed by HPLC-UV analysis. The recoveries of myricetin and dihydromyricetin were 92.7% and 55.6%, respectively. This study demonstrates the feasibility of using the developed MIP-SPE method to purify and enrich myricetin in the natural products.
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npj Science of Food
·
2025
·Vol. 9
·期 1
·1-9
·
IF 7.8
Liu Kai,Lian Yinyin,Xie Xingyun,Gao Yuyang,Song Jiajia,Suo Huayi,Zhang Yu
This study investigates the impact of O. oeni on the quality of blueberry wine, employing various analytical methods to determine parameters such as alcohol content, antioxidant capacity, organic acids, amino acids, and volatile components. The results demonstrated that co-inoculation with O. oeni significantly decreased the titratable acidity of blueberry wine. Among the organic acids, the malic acid content of ST and SE groups decreased by (26.24 ± 1.24)% and (35.75 ± 4.02)%, respectively. The main consumed amino acids were aspartate, lysine, and arginine after co-inoculation with O. oeni . Additionally, co-inoculation with O. oeni significantly increased the content of medium-chain fatty acid ethyl esters, especially isoamyl acetate content. The antioxidant capacity of blueberry wine was significantly enhanced by co-inoculation with O. oeni , particularly in terms of measurement of 1,1-diphenyl-2-picryl-hydrazyl (DPPH) clearance. The findings of this study provide a solid basis for improving the quality of blueberry wine and promoting the growth of blueberry wine industry.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiao Xiao,Guowei Shan,Hong Gao,Zhe Ling,Yujia Tong,Xiaohui Ju,Weixing Li
Heavy metal ions (HMI), a non-degradable toxic substance, has raised widespread concerns in water purification. Membrane separation is a considerable and promising technology for removing HMIs from water, due to its environmentally friendly, clean and highly effective. This study reported a functional composite ultrafiltration membrane prepared from natural biomolecules ε-Poly-L-lysine hydrochloride (PLL), sodium lingo sulfonate (SLS) or sodium alginate (SA) based on the combination strategy of chemical graft and layer-by-layer assembly. The fabricated membrane exhibited a high pure water flux (2957 L·m −2 ·h −1 ), high capture efficiency for Cu 2+ (99.1 %) and Pb 2+ (98.9 %). Notably, the layer-by-layer assembly strategy provides abundant groups for HMI binding, ensuring the high capture efficiency. The fabricated membrane demonstrated a low flux decline (9 %), along with a high flux recovery ratio (99.2 %). Moreover, it exhibited exceptional stability and reusability across a wide pH range (pH 5–9), meanwhile maintaining a capture efficiency of approximately 99 % under near-neutral condition after undergoing 5 cycle experiments for both Cu 2+ and Pb 2+ . Our work builds a straightforward approach for UF membrane fabricating with excellent HMI capture capacity, displaying the potential application in HMI waste water purification.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yifan Liu,Jiazuo Zhou,Yudong Li,Xiaohan Sun,Ziyao Wang,Haiyue Yang,Chengyu Wang
Gels as compelling soft material shows its promising versatility in actuators, soft electronics, and biomedical sensors. However, most gel materials are too rigid to cope with long-term changing scenarios and specific needs. Inspired by the switchable behavior of bio-behavior of muscle, the study reports a thermodynamically controllable and stiffness-transformative cellulose-salt gel by simple thermal mixing of hydrous salt, cellulose nanofiber, and polyacrylamide. The achieved cellulosic gel with dynamic microstructure presents an amazing stiffness switchability between crystalline state and melted states of 32.38 to 0.02 MPa, as well as the regulable light transmittance between 41.59% and 93.43%. In addition, this cellulose-salt gel has excellent thermal controllable behavior. That is, by controlling the crystallization process, the cellulose-salt gel displays the start-stop releasing-energy behaviors on demand. Enabled by these outstanding properties, the study further demonstrates the promising application of cellulose-salt gel in controllable soft-rigid coupling thermoelectric device, showing the broader implications for wearable electronics aiming at on-demand work.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2024
·
IF 3.7
Zhuojun Jiang,Yufeng Liang,Shuyao Xiong,Guo Li,Qian Zhang,Benzheng Xia,Liangrong Yang,Zheng Li
A synergistic solvent extraction system comprising trioctylamine (TOA) and ligands with hydroxyl and carboxyl groups can efficiently recover boric acid (H 3 BO 3 ) and separate boron isotopes. However, the structure of ligands might impact H 3 BO 3 extraction, boron isotope separation, and solvent loss, which has not been thoroughly investigated. This study initially evaluated the influence of ligand’s type, p K a , and substituents on H 3 BO 3 extraction efficiency, as well as the impact of the B (4) -O structure (boron is bound to four oxygen atoms) in the organic phase on isotope separation efficiency. Subsequently, by synthesizing the highly hydrophobic 2-hydroxydodecanoic acid (HYA), the extraction performance and mechanism of the TOA/HYA system were investigated. The findings highlight the superior extraction efficiency when employing di-phenolic hydroxyl, phenolic hydroxyl + carbinol hydroxyl, and alcoholic hydroxyl + carboxyl ligands compared to phenolic hydroxyl + carboxyl, phenolic hydroxyl + ethanol hydroxyl, diol hydroxyl, and dicarboxylic ligands. The organic phase anion complex, exclusively comprising the B (4) -O structure, enhances isotope separation effectiveness. The TOA/HYA system achieves an 80% single-stage extraction efficiency for H 3 BO 3 . H 3 BO 3 and HYA are extracted into the organic phase at a ratio of 1:2, with the anion complex solely containing the B (4) -O structure. This study paves the way for the construction of novel boric acid extraction and boron isotope separation systems.
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Food Chemistry-X
·
2025
·
IF 8.2
Yinyin Lian,Yingmei Meng,Mei Wang,Jiajia Song,Huayi Suo,Yu Zhang
Mulberries, despite its rich nutritional and health-promoting properties, are commonly associated with high post-harvest waste. Fermenting them into mulberry wine can increase their added value. This study investigated changes in mulberry physicochemical properties, antioxidant capacity, volatile, and non-volatile compounds pre- and post- fermentation using two varieties (Seedless Dashi and Taiwanese long-fruited mulberries). Fermentation significantly increased titratable acidity and antioxidant capacity, while reducing soluble solids, total sugars, ascorbic acids, and oxalic acids. Post-fermentation analysis showed a significant increase in tartaric acid, malic acid, and newly formed succinic acid, with total amino acids decreasing. A comprehensive analysis identified 67 volatile flavor compounds pre- and post-fermentation. A total of 28 among them (odor activity value >1) contributed to aroma. Orthogonal partial least squares discriminant analysis (OPLS-DA) identified 13 key markers distinguishing pre- and post-fermentation samples. These findings provide insights for optimizing mulberry wine production and industrial applications.
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Foods
·
2025
·Vol. 14
·期 18
·3188
·
IF 5.1
Rui Liao,Xiongjun Xiao,Huiling Huang,Kangjie Yu,Jianxia Tan,Yue Wang,Cong Li,Siyu Li,Yi Ma
This study investigated the potential of yeast polysaccharides (YPs) as an SO 2 substitute by adding varying concentrations (0–250 mg/L) prior to wine fermentation. The antioxidant activity and color stability were evaluated using UV–visible spectrophotometry, high-performance liquid chromatography, and colorimetric methods. Furthermore, HS-SPME-GC-MS and quantitative descriptive analysis were employed to compare the volatile compound profiles and sensory attributes between the optimal yeast polysaccharide treatment group (TS100, 100 mg/L) and the sulfur dioxide treatment group (S). Results showed that YPs addition effectively preserved phenolic compounds, with TS100 exhibiting the highest total phenols, flavonoids, and anthocyanins, where total anthocyanins reached 340.79 mg/L, a 2.52% increase over the S group. ABTS + scavenging activity showed no significant difference from the S group, confirming strong antioxidant capacity. Flavor compound content was higher in TS100 (10,458.99 μg/L) than in the S group (10,156.07 μg/L), with ethyl caprylate and ethyl decanoate being particularly prominent. These esters contributed intense fatty and fruity aromas, enhancing the overall sensory quality of the wine. In summary, 100 mg/L YPs addition yielded the best wine quality, demonstrating promising potential as an SO 2 alternative in winemaking.
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