Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Bingjie Wang,Yuxin Wang,Tao Tian,Zhishan Bai
The design and development of multifunctional materials to meet the sophisticated requirements of oily wastewater treatment is an urgent need and remains a great challenge. Herein, a superamphiphilic bio-aerogel (PTGA) with honeycomb-like porous structure was synthesized. The directional and reversible control of interfacial wettability can be achieved by simple pre-wetting process and solvent replacement method. Combined with the advantages of structure and wettability, PTGA was proved to be ideal for high-efficient oil-water mixture separation ( J > 1500 L/m 2 ·h, η > 99.8%), oils absorption ( C abs = 17–26 g/g) and dye selective removal (MO: 73.552 mg/g, MB : 45.876 mg/g). Furthermore, based on the newly developed dynamic separation device and excellent mechanical property of PTGA, enhanced separation of oil-water mixture ( J = 3007 L/m 2 ·h) and synergistic removal of co-existing pollutants (MB: 51.274 mg/g) were realized. Mechanism results indicated that the transition of interfacial wetting properties of PTGA was a multi-stage process, while oil/water separation and dye adsorption were two independent processes. Benefit from facile synthesis and unparalleled characteristics, the designed PTGA promise to be reliable and competitive candidates in wastewater remediation.
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高影响因子
BIOCHIMIE
·
2023
·
IF 3.9
Ya-nan Ou-Yang,Fen-fen Deng,Yun-jia Wang,Meng Chen,Peng-fei Yang,Zhe Yang,Zhongmin Tian
A high-salt diet is known to increase serum cholesterol levels; however, the underlying mechanism of salt - induced dyslipidemia in patients with salt-sensitivity remains poorly understood. We aimed to investigate whether high-salt diet (HSD) can induce dyslipidemia and elucidate the underlying mechanism of salt-induced dyslipidemia in Dahl salt - sensitive (SS) rats. Metabolomic and biochemical analyses revealed that the consumption of an HSD (8 % NaCl) significantly increased the serum levels of total cholesterol (TC) and low-density lipoprotein cholesterol (LDL - C) in SS rats. The enzyme-linked immunosorbent assay demonstrated an increase in circulating proprotein convertase subtilisin/kexin type 9 (PCSK9) levels, accompanied by a decrease in hepatic low-density lipoprotein receptor (LDLR) levels due to HSD consumption. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blot analysis revealed that HSD consumption activated sterol regulatory element-binding protein-2 (SREBP2) expression in the liver and kidney, resulting in upregulation of PCSK9 at the transcriptional level in the liver and at the translational level in the kidney, ultimately increasing circulating PCSK9 levels. The combined effects of HSD on the liver and kidney contributed to the development of hypercholesterolemia. Furthermore, an in vitro assay confirmed that high-salt exposure led to an increase in the protein expression of SREBP2 and PCSK9 secretion, thereby reducing low-density lipoprotein (LDL) uptake. This study, for the first time, shows that an HSD induces dyslipidemia through activation of the SREBP2/PCSK9 pathway, providing new insights into the prevention and treatment of dyslipidemia in patients with salt sensitivity.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2023
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IF 9.1
Shengye Chen,Jiale Zhou,Kunquan Li,Zhuohan Chen,Xuanjun Li,Xiaojing Su,Xiaojuan Ao,Huali Xie,Lu Chen,Xuting Wu,Wenjian Wu
Recently, the crude oil spill has brought inevitable harm to the global ecological environment. Due to the high-viscosity crude oil, it is wise to take advantage of the photothermal/electrothermal effects of the membrane to separate the crude oil from the water. However, the functional separation membrane always suffers from low photothermal/electrothermal effects and poor stability. Herein, the vinyl polyvinylidene fluoride/mercapto carbon nanotubes@vinyl-terminated polydimethylsiloxane (PVDF-a/CNT-s@PDMS) membrane with fast photothermal/electrothermal effects and organic absorption property was successfully prepared by electrospinning and multi-layer loading method. The prepared PVDF-a/CNT-s@PDMS membrane resisted a variety of liquids and had stable superhydrophobicity (WCA = 156°). Furthermore, the membrane maintained superhydrophobicity even suffer from water and milk under the applied voltage condition. After 100 wear resistance tests, the membrane maintained stable superhydrophobicity and the separation rate remained unchanged. The surface temperature of the membrane rapidly approached to the maximum temperature in 30 s, showing a rapid photothermal/electrothermal effects, and the average separation rate of crude oil was 1185 kg m −2 h −1 ·bar −1 . Meanwhile, the membrane exhibited outstanding efficiency for separate immiscible oil-water mixtures. Importantly, the incorporation of the sulfhydryl group enhanced the special ability of the composite membrane to adsorb organic dyes from oil phase. Therefore, the PVDF-a/CNT-s@PDMS membrane has a wide range of potential application in the domain of oil-water separation.
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高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2023
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IF 6
Fengli Lian,Jun-Hu Cheng,Da-Wen Sun
In this study, the effects of different microwave treatment times (10, 20, 30, 40, 50, and 60 s) on fat loss, fatty acid profile, lipid transfers, and microstructure of pork subcutaneous back fat (PSBF) were investigated. Results showed that the fat loss of PSBF after microwave treatment for 60 s was significantly increased (53.31%). Microwave treatment increased the proportion of saturated fatty acids but reduced the relative content of monounsaturated and polyunsaturated fatty acids. Cryo-scanning electron microscopy, ordinary optical microscope and confocal laser scanning microscope analysis demonstrated that microwave treatment facilitated a large outflow of fat from the adipocytes, and the increasing and then decreasing changes in the size of individual adipocytes. Magnetic resonance imaging enabled the visualization of fat migration of PSBF. Overall, PSBF can be used as a biological model to evaluate the effect of microwave treatment on the change and migration mechanism of fat.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
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IF 9.8
Yaqi Zhang,Shiwei Tian,Qiankun Sha,Jinjie Lv,Na Han,Xingxiang Zhang
The smart membrane with under-liquid dual superlyophobicity, which can achieve on-demand separation of oil/water emulsions only by simple liquid pre-wetting, is of essential value for the treatment of complicated real oil/water systems. Here, we first fabricated a stable suspension of imine-linked covalent organic framework nanospheres (TPB-DMTP-COF), and subsequently fabricated COF functionalized smart membranes with under-liquid dual superlyophobicity by immersing polyacrylonitrile-based (PAN-based) membranes into TPB-DMTP-COF nanosphere suspension. Accordingly, effective switchable separation of both oil-in-water and water-in-oil emulsions by TPB-DMTP-COF/PAN membranes can be achieved by employing pre-wetting processes (both the oil contact angle under water and the water contact angle under oil are over 150°). Specifically, the separation flux and the separation efficiency are higher than 1200 L/m 2 ‧h and 98.0 %, and 2100 L/m 2 ‧h and 97.4 % for the surfactant-stabilized oil-in-water and water-in-oil emulsions, respectively. Furthermore, the ultralow adhesions in liquid contributed to the outstanding reusability and antifouling resistance of the prepared TPB-DMTP-COF/PAN membranes. This work provides a feasible approach for fabricating a smart membrane with under-liquid dual superlyophobicity for oily wastewater treatment .
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Quan Shen,Yue Jiang,Shanzhu Guo,Lin Huang,Haibo Xie,Long Li
Gradual-transition wettability gradient is a highly promising wettability profile for driving fluid directionally transport across the thickness of porous membranes. However, the fabrication of such membranes is still challenging, limiting their further application in various fields. Here, we report a one-step strategy to fabricate membranes with gradual-transition wettability gradient (GMs) by programmed in-line-blending electrospinning polymers (poly (ε-caprolactone) (PCL) and poly (ε-caprolactone-co-ethylene glycol) (PCE)) with compatible segments but obviously different wettabilities. The results demonstrate that two opposite gradual-transition wettability gradients across the thickness are successfully fabricated in GMs, and resulting GMs exhibit excellent directional liquid transport property that can only allow liquid drops and continuous flow to permeate across the thickness in the direction from the lyophobicity-rich side to the lyophilicity-rich side while blocking the permeation process in the reverse direction. Additionally, no matter under high or low gravity conditions, the directional fluid transport flux of membranes with different wettability profiles improves as the gradient layers increase from 3 to 78, corresponding to the transition of wettability profile from 3-layered Janus wettability to 78-layered gradual-transition wettability. As a result, GMs achieve much faster directional fluid transport fluxes than membranes with abrupt-change wettability gradient (AMs) and homogeneous wettability, owing to the acceleration of internal driving forces originating from the gradual-transition wettability gradient. Based on this particular property, GMs also show great potentials in ultrafast directional floating oil collection and energy-saving directional separation of oil/water mixtures, offering new insight for designing and fabricating wettability-anisotropic porous membranes with potential and versatility in multiple applications.
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高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
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2023
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IF 5.4
Yudi Yao,Yang Chen,Huijian Chen,Xin Pan,Xiaojun Li,Wenqi Liu,Yerlan Bahetjan,Binan Lu,Kejian Pang,Xinzhou Yang,Zongran Pang
Ethnopharmacological relevance Black mulberry ( Morus nigra L.) is an ancient dual-use plant resource for medicine and food. It is widely used in Uyghur folklore for hypoglycemic treatment and is a folkloric plant medicine with regional characteristics. However, the mechanism of Morus nigra L. treatment in diabetes mellitus has not been fully understood, especially from the perspective of hepatic lipid accumulation is less reported. Objective of this study This study was to explore the potential of Morus nigra L. fruit ethyl acetate extract (MNF-EA) to reduce blood sugar levels by preventing the production of hepatic lipogenesis and to provide more evidence for the use of MNF-EA as an adjuvant therapy for type 2 diabetes mellitus (T2DM). Materials and methods In this study, the chemical composition of MNF-EA was first analyzed and characterized using UPLC-Q-TOF-MS technique. A series of in vitro studies were performed with HepG2-IR cells and oleic acid (OA)-induced HepG2 cells, including MTT assay, glucose uptake assay, oil red O staining and Western blot analysis . The STZ-HFD co-induced T2DM mice were employed for in vivo research, including physical indices, biochemical analysis, histopathological examination, and Western blot analysis. Results The 19 compounds in MNF-EA were identified by UPLC-Q-TOF-MS technique. Insulin resistance (IR) and lipid droplet accumulation in HepG2 cells were greatly improved by MNF-EA treatment, which had no appreciable side effects at the dosage used. In T2DM mice, MNF-EA decreased fasting blood glucose (FBG), saved body weight, and significantly improved oral glucose tolerance (OGTT) and IR status. In addition, MNF-EA treatment also improved lipid metabolism disorders and liver function in T2DM mice. Histopathological sections showed that MNF-EA treatment reduced hepatic steatosis . Mechanistic studies suggest that MNF-EA acted through the AMPK/mTOR pathway. Conclusions These results suggest that MNF-EA has great potential to reverse the metabolic abnormalities associated with T2DM by regulating the AMPK/mTOR signaling pathway. Therefore, we believe that MNF is a promising medicinal and food-homologous agent to improve T2DM.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
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IF 8.6
Mengxiao Zhang,Xiaohe Wang,Ruiyan Xiong,Weilin Feng,Chuanjie Fang,Jianyu Wang,Liping Zhu
Treating oily wastewater is of great importance and urgency worldwide. The superhydrophilic and underwater superoleophobic (SUS) membrane is an effective alternative to realize such a goal. However, most SUS membranes are vulnerable in harsh environments, such as strong acidic/alkaline solutions or physical abrasion, resulting in a limited lifespan. In this work, a robust SUS membrane was developed by depositing in situ a TiO 2 nanocoating onto the polytetrafluoroethylene (PTFE) porous membrane with (3-[(perfluorohexyl sulfonyl) amino] propyltriethoxy silane) (PFSS) as an intermediate layer. In the preparation process, the fibrils and nodes of the PTFE membrane were integrally enclosed with the chemical networks generated by hydrolysis and self-condensation of the PFSS . Then, the nano-TiO 2 was in situ bonded with the sulfonyl amide group of the PFSS via bidentate coordination. As a result, an ultrathin and continuous nano-TiO 2 coating (∼20 nm) was created, and the coating covered throughout the porous PTFE matrix. The resultant PTFE membranes demonstrated typical SUS characteristics, while their pore structure was almost unchanged. The PTFE SUS membranes exhibited a high emulsion permeance (up to 18,700 L m –2 h −1 bar −1 ) with a separation efficiency above 99.3%. Attributed to the soldering effect of the PFSS between TiO 2 nanoparticles and the PTFE membrane, the developed SUS membranes exhibited excellent stability against strong acid/alkali washing and hydraulic shearing, all of which outperformed the majority of current SUS membranes.
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高影响因子
Carbohydrate Polymer Technologies and Applications
·
2023
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IF 5.5
Xiang Wang,Meiling Chen,R.M. Oshani Nayanathara,Zhao Zhang,Xuefeng Zhang
Herein, we proposed a metal-ion-induced surface nano-engineering technology for transforming hydrophilic waste newspaper (WNP) into a hydrophobic material suitable for oil-water separation, without using hydrophobic chemicals/materials. WNPs were swelled in a dilute ferric ion solution (i.e., 50 mM FeCl 3 ) followed by oven-drying to induce the coordination between ferric ions and hydroxyls of lignocellulose nanofibrils of the paper. This resulted in the crosslinking of lignocellulose nanofibrils and converted the hydrophilic WNP to the hydrophobic membrane (HM). The HM exhibited remarkable oil sorption capacity for various oils, up to 3.4 times its weight, and demonstrated good recyclability after undergoing 10 cycles of absorption-desorption-drying. Additionally, HM demonstrated the ability to effectively separate both immiscible oil-water mixtures and surfactant-stabilized water-in-oil emulsions in continuous gravity-driven oil-water separation processes. With the modification method and advantages in oil-water separation, the as-prepared HM exhibits great potential for application in oil spill treatment and environmental remediation.
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2023
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IF 11.4
Xin-Yu Xu,Nan Hu,Zhu-Kang Qian,Qing Wang,Li-Wu Fan,Xin Song
In situ thermal desorption (ISTD) provides an efficient solution to remediation of soil and groundwater contaminated with nonaqueous phase liquids (NAPLs). Establishing a relationship between the subsurface temperature rise and NAPL removal is significant to reduce energy consumption of ISTD. However, the co-boiling phenomenon between NAPL and water poses a great challenge in developing this relationship due to the nonequilibrium heat and mass transport effects. We performed a systematic experimental investigation into the local temperature rise patterns at different distances from a NAPL pool and under different degrees of superheat by selecting four representative NAPLs (i.e., trichloroethylene, tetrachlorethylene, n-hexane, and n-octane) according to their density and boiling point relative to water. The patterns of temperature rise indicated that the underground temperature field can be divided into three zones: the zone of local thermal equilibrium, the nonequilibrium zone affected by co-boiling, and the zone unaffected by co-boiling. We developed a pattern-recognition-based approach, which considers the effects of local heat and mass transport to establish a qualitative correlation between the temperature rise and NAPL removal. Our results give deeper insights into the understanding of subsurface temperatures in ISTD practice, which can serve as the guideline for more accurate and sustainable remediation.
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高影响因子
Advanced Science
·
2023
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IF 15.1
Qiao Chen,Xinmei Duan,Yao Yu,Rongrong Ni,Guojing Song,Xu Yang,Li Zhu,Yuan Zhong,Kun Zhang,Kai Qu,Xian Qin,Wei Wu
Multifunctional nanomedicines have been used in atherosclerosis theranostics. Herein, phosphatidylserine-specific peptide CLIKKPF-functionalized carbon-dots nanozymes (pep-CDs) are reported for specific and efficient noninvasive theranostic of atherosclerosis. Surprisingly, pep-CDs are discovered to not only inherit the inherent properties of carbon dots (CDs), including deep-red fluorescence emission, photoacoustic response, and superoxide dismutase-like antioxidant, and anti-inflammatory activities but also possess the ability to target recognition on foam cells and target localization on plaques due to the specific interaction of CLIKKPF with phosphatidylserine on the membrane outer surface of foam cells. Furthermore, the target localization effect of pep-CDs vastly promotes the efficient accumulation of CDs in plaque, thus maximizing AS theranostic of CDs. Interestingly, pep-CDs could be developed to image plaque for monitoring atherosclerosis pathological progression in real-time resulting from the different content of foam cells. This work on the one hand proposes a simple and feasible strategy to construct theranostic nanoplatform employing only a single functional unit (i.e., multifunctional CDs) to simplify the fabrication procedure, on the other hand, highlights the advantages of the active target auxiliary mode for atherosclerosis theranostic applications.
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高影响因子
JOURNAL OF POLYMER SCIENCE
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2023
·Vol. 61
·期 21
·2733-2741
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IF 3.4
Houying Ma,Yuling Yang,Jianqiang Wang,Zhixiang Zeng,Lijing Zhu
Oil-fouling of the membranes limits further application in the separation and purification of oil-in-water emulsions. Here, anti-oil fouling membranes are engineered by the method of non-solvent induced phase separation (NIPS) which enriches the polysulfonated dopamine (PSDA) and polyethyleneimine (PEI) (PSDA-PEI) to the top surface from mixed casting solution. The obtained membrane achieves excellent anti-oil fouling property as high as 98.2% oil rejection, yet it still possesses good flux of 2362.5 ± 110.9 and 1252.3 ± 71.8 L m −2 h −1 for the separation of 1,2-dichloroethane-in-water and toluene-in-water emulsions. This can be attributed to outstanding hydrophilicity and super underwater superoleophobicity for mussel-inspired PSDA-PEI layer. In addition, the membrane also has excellent stability in acid (pH 1, 3, and 5) or alkali (pH 10 and 12) solutions. This work provides a facile method to engineer underwater superoleophobic membranes with excellent anti-oil fouling by mussel-inspired chemistry for oily water treatment. Graphical
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高影响因子
危险品化学品经营许可证（带存储）