SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yuzhe Zhou,Yanmei Ma,Xiangyun Li,Wentao Yan,Yong Zhou,Congjie Gao
The co-solvent-assisted interfacial polymerization (CAIP) strategy has proven to be an effective method for fabricating high-performance forward osmosis (FO) membranes. However, current research primarily focuses on the role of co-solvents in conventional interfacial polymerization (IP) technology, with relatively limited studies on unconventional IP technologies. This study explores support-free interfacial polymerization (SFIP) by incorporating dimethyl sulfoxide (DMSO) as a co-solvent. The impact of DMSO on polyamide (PA) structure and membrane performance is systematically investigated throughout the SFIP process. At a DMSO concentration of 1.5 w/v%, SFIP-D1.5 membrane exhibited a high water flux of 29 LMH without a significant increase in reverse salt flux. This phenomenon can be attributed to the dual role of DMSO in promoting monomer diffusion and inducing swelling of the SFIP-PA film. Furthermore, the SFIP-D1.5 membrane exhibited stable performance over 24 h operation and maintained comparable anti-fouling properties during multi-cycle fouling tests. This study reveals the distinct behavior of DMSO in the SFIP process compared to conventional IP, and demonstrates the potential of the CAIP strategy within unconventional IP techniques. This provides a promising approach to enhance both the selectivity and permeability of TFC FO membranes fabricated using strong solvents as co-solvents.
研究领域:
膜科学
·
化学工程
·
材料科学
·
环境工程
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2020
·
IF 2.627
Chengpan Li,Jing Liu,Qiang Wu,Xiangyu Chen,Weiping Ding
In cryopreservation, the addition of cryoprotectant can change the intra- and extra-cellular osmotic pressure, affect the cell morphology, and induce blebs on the plasma membrane. In this study, the blebs of cells microencapsulated in the alginate microsphere induced by osmotic shock were studied, and the effects of microencapsulation on bleb size and cell viability were determined. Firstly, a coaxial co-flow focusing device was applied to generate cell-laden microcapsules using alginate hydrogel in this paper. Then, cellular blebs induced by DMSO with various concentrations under microencapsulation were compared with that when non-encapsulated, and the dynamic process of cellular bleb was investigated. Finally, the qualitative relationship between bleb size and cell viability in the presence of DMSO was built, and thus the effects of microencapsulation on bleb size and viability were evaluated. The results show that the bleb size is smaller and the cell viability is higher, and cell microencapsulation can significantly inhibit the excessively large blebs generated on the cell membrane and reduce the osmotic damage to cells when loading cryoprotectant and then to improve cell viability during cryopreservation. This work can provide insights for optimizing cryoprotectant-loading protocols, offer a new avenue to study cell blebbing, and advance future research on cryopreservation of rare cells and biomaterials.
研究领域:
生物技术
·
低温生物学
·
细胞生物学
·
材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Kudakwashe Meki,Zhuowen Wang,Baojian Jing,Shan Qiu,Fengxia Deng
In the face of challenges presented by rapid urbanization and industrialization, the surge in dye wastewater has emerged as a prominent concern. This study introduces a pioneering novel approach aimed at augmenting the electrocatalytic efficiency of O 2 reduction to H 2 O 2 through the modification of a hybrid catalyst with dimethyl sulfoxide (DMSO) to construct gas diffusion electrodes (GDEs). The hybrid catalyst, consisting of carbon black and DMSO, was meticulously fabricated, and its electrocatalytic activity was thoroughly investigated using various characterization techniques. Within 180 min, the 3 %DM cathode showcased efficient H 2 O 2 generation, reaching 850 μM, and remarkable oxygen utilization, achieving 60.49 %. Intriguingly, the fabricated 3 %DM hybrid catalyst maintained a three-phase interfacial (TPI) due to its super-hydrophilic property. This study elucidates the pivotal role of DMSO in enhancing the performance of hybrid catalysts for O 2 reduction to H 2 O 2 . The insights provide valuable perspectives into the development of efficient and resilient electrochemical systems for sustainable energy conversion and environmental applications.
研究领域:
环境科学
·
电化学
·
催化
·
废水处理
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Fei Yan,Xiaohan Guo,Qingying Ye,Ping Li,Juanjuan Qi,Lidong Wang
Due to its excellent solubility for many chemicals, DMSO is widely used as solvents in industries. The biodegradation of DMSO is pretty slow and gives out noxious and volatile compounds like dimethylsulfide, methyl mercaptan, and hydrogen sulfide. Therefore, a green and efficient DMSO removal process is needed. In this work, supported molybdenum oxide catalysts were prepared and were characterized with powder XRD, SEM, TEM, Raman, DR-UV–vis spectroscopy and XPS. These catalysts are efficiently active for the catalytic oxidation of DMSO in wastewater using green oxidant, H 2 O 2 . The degradation product of DMSO is DMSO 2 which is an environmentally friendly and biodegradable compound and can be further removed by biological processes without forming hazardous sulfides. Fumed SiO 2 is the best support for MoO 3 and the catalytic activity increases with the increase of the MoO 3 loading. DMSO (179 mmol/L) is completely removed after a 2-hour reaction at 50 °C. EPR analyses and control experiments with radical scavengers confirm that the oxidative degradation of DMSO is not a radical reaction. Thus, a non-radical oxidation mechanism is proposed for the degradation of DMSO. The kinetic study on the 30 wt% MoO 3 /SiO 2 catalyst confirms that the catalytic oxidation reaction of DMSO is a pseudo-first-order reaction with an apparent activation energy of 68.5 kJ/mol. When the initial concentration of DMSO is further increased to 264 or 344 mmol/L, the MoO 3 /SiO 2 catalyst can still remove it within 2 h. In conclusion, this catalyst is a promising candidate for treating industrial wastewater containing DMSO.
研究领域:
环境科学
·
催化
·
化学工程
·
废物管理
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产品关联
DOI
高影响因子
BIOTECHNOLOGY LETTERS
·
2017
·Vol. 39
·期 8
·1175-1181
·
IF 1.73
Zhou Youzhi,Liu Ke,Zhang Jinsong,Chu Jianlin,He Bingfang
Objective To improve the stability of β-galactosidase from Bacillus megaterium YZ08 (BMG) in aqueous hydrophilic solvents and promote its application in the galactosylation of natural products. Results The addition of 5 mM Mg 2+ significantly enhanced the stability of BMG in aqueous hydrophilic solvents, and the half-lives of BMG in these solutions reached 56 min to 208 h, while they were only 7 min to 5.9 h without addition of Mg 2+ . Studies on the kinetic parameters in buffer solution and 30% dimethyl sulfoxide (DMSO) indicated that the affinity of BMG to 2-nitrophenyl-β- d -galactopyranoside and its catalytic efficiency ( κ
cat / K
m ) increased with the addition of Mg 2+ . Furthermore, the addition of Mg 2+ facilitated galactosylation reactions in 30% DMSO and increased product conversions by 24–41% due to the reversal of the thermodynamic equilibrium of hydrolysis. Conclusion A convenient approach was established to improve the stability of BMG in aqueous hydrophilic solvents.
研究领域:
酶学
·
生物催化
·
生物化学
·
有机化学
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产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2019
·Vol. 22
·期 2
·532-539
·
IF 9.405
Qixuan Lin,Shouwei Liao,Libo Li,Weiying Li,Fengxia Yue,Feng Peng,Junli Ren
In this study, experiments and molecular dynamics simulations were combined to get insights into the role of solvent during the process of xylose conversion under catalyst-free conditions. Solvents used for furfural production were comparatively discussed, including traditional and emerging biomass-derived solvents – water, dimethyl sulfoxide (DMSO), dimethyl formamide (DMF), isopropanol (ISO), γ-butyrolactone (GBL) and γ-valerolactone (GVL). The degradation behavior of solvents, the solubility and α/β ratio of xylose, the distribution of the solvent around xylose/furfural and the hydrogen bonding between them were also studied. The results showed that in pure solvents, the different hydrogen bonding between xylose and the solvent resulted in different products. Water was a favourable solvent for xylose to form furfural among these pure solvents because less formic acid was produced from xylose in water under catalyst-free conditions. Furfural could be produced in mixed solvents if there was more water around xylose, which was similar to the case in pure water. Otherwise, the situation in mixed solvents was similar to that in the corresponding pure organic solvents. GBL and GVL, as green solvents, had weaker affinities with xylose than DMSO, DMF and ISO, but were intensively attracted by furfural, thus they could provide protective shells for furfural, which played a positive role during the production of furfural. The highest furfural yield of 46.4% was achieved in GBL–H2O at 180 °C – 150 min in the absence of catalysts.
研究领域:
化学工程
·
生物质转化
·
分子动力学模拟
·
绿色化学
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DOI
高影响因子
AICHE JOURNAL
·
2019
·Vol. 66
·期 1
·e16746
·
IF 3.463
Chao Bian,Yin-Ning Zhou,Zheng-Hong Luo
Controlled radical polymerization (CRP) under external field has been an attractive research area in these years. In this work, a new electron transfer mechanism, that is, sonochemically induced electron transfer (SET) was introduced to mediate polymerization for the first time. The activator Cu I X/L complex was (re)generated from Cu II X 2 /L in dimethylsulfoxide (DMSO) by the SET process in the presence of free ligand tris(2-dimethylaminoethyl)amine (Me 6 TREN). The investigation of polymerization including the mechanistic insights and effect of experimental conditions on the rate of reaction has been undertaken. Kinetics of Cu(II)-catalyzed CRPs via SET under different conditions (i.e., Me 6 TREN concentration, catalyst loading, targeted degree of polymerization, and sonication power) were conducted in an unprecedentedly controlled manner, yielding polymers with predetermined molar masses and low dispersities ( Đ < 1.12). Attractively, the polymerization can be performed without the piezoelectric nanoparticles and exogenous reducing agent. Contamination by nonliving chains formed from sonochemically generated radicals is avoided as well. All of these results supported that Cu(II)-based catalyst activation enabled by ultrasonication has a promising potential in scale-up of CRP.
研究领域:
高分子化学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Ze-Jun Wang,Qiao-Feng Zheng,Shu-Shen Liu,Peng Huang,Ting-Ting Ding,Ya-Qian Xu
At present, the toxicity prediction of mixtures mainly focuses on the concentration addition (CA) and independent action (IA) based on individual toxicants to predict the toxicity of multicomponent mixtures. This process of predicting the toxicity of multicomponent mixtures based on single substances or low component mixtures is called down-to-top method in this study. However, due to the particularity of some toxicants, we have to use the top-to-down idea to obtain or eliminate the toxicity of some components from mixtures. For example, the toxicity of toxicants is obtained from the toxicity of a mixture with, especially toxic, cosolvent added. In the study, two top-to-down methods, the inverse CA (ICA) and inverse IA (IIA) models, were proposed to eliminate the effects of a certain component from multicomponent mixtures. Furthermore, taking the eight binary mixtures consisting of different shapes of cosolvents (isopropyl alcohol (IPA) having hormesis and dimethyl sulfoxide (DMSO)) and toxicants (two ionic liquids and two pesticides) as an example, combined with the interaction evaluated by CA and IA model, the influence of different shapes of components on top-to-down toxicity prediction was explored. The results showed that cosolvent IPA having hormesis may cause unpredictable effects, even at low concentrations, and should be used with caution. For DMSO, most of the toxicant's toxicity obtained by ICA and IIA models were almost in accordance with those observed experimentally, which showed that ICA and IIA could effectively eliminate the effects of cosolvent, even if toxic cosolvent, from the mixture. Ultimately, a frame of cosolvent use and toxicity correction for the hydrophobic toxicant were suggested based on the top-to-down toxicity prediction method. The proposed methods improve the existing framework of mixture toxicity prediction and provide a new idea for mixture toxicity evaluation and risk assessment.
研究领域:
环境毒理学
·
风险评估
·
化学毒理学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Haiyan Wang,Zhuo Zhang,Ye Li,Feifei Zhang,Kuo Yang,Bing Xue
A clay-based quasi-solid-state electrolyte was prepared using dimethyl sulfoxide (DMSO) intercalated kaolinite as the raw material to suppress the adverse effects of free water molecules on aqueous zinc-ion batteries (AZIBs). Based on the inherent water absorption and retention properties of clay kaolinite, as well as the interlayer modification, this clay-based quasi-solid-state electrolyte not only achieved a low water content but also exhibited a strong water binding effect, which restricted the HER and side reactions involving water participation. Furthermore, the intercalation of DMSO increased the number of negative charges on the surface of kaolinite, resulting in the formation of a continuous spatial electrostatic field area around the kaolinite particles, which played a role in cation selectivity. The ionic transference number of the quasi-solid-state electrolyte reached 0.91. Additionally, the intercalation of DMSO broadened the interlayer ionic transport channels of kaolinite, further enhancing the transport efficiency of Zn 2+ in the quasi-solid-state electrolyte, achieving uniform deposition of Zn 2+ on the surface of the Zn anode, and suppressing dendrite growth to maintain a stable quasi-solid-state electrolyte/Zn anode interface. Zn||MnO 2 battery assembled with this electrolyte demonstrated a discharge specific capacity of 301 mAh/g at a current density of 60 mA g −1 . The Zn||MnO 2 battery could be stably cycled for 1000 cycles at a current density of 150 mA g −1 , and after 1000 cycles, the battery still maintained a discharge specific capacity of 248.2 mAh/g with a capacity retention rate of 84.8 %, showing excellent capacity performance and cycle stability. The Zn||MnO 2 pouch battery could still provide stable power under heavy pressure, bending, and continuous tapping and had the potential for use in flexible batteries.
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
Science of Advanced Materials
·
2022
·Vol. 14
·期 10
·1589-1598
·
IF 1.067
Jin Hong,Wu Yali,Li Yanzhong
Adsorption method has attracted extensive attention in heavy metal wastewater treatment due to its low cost, abundant sources, and simple operation. Kaolin is utilized as raw material, waterborne polyurethane is utilized as dispersion medium, and dimethyl sulfoxide (DMSO) is utilized
as intercalation agent, to prepare intercalation polymerization modified kaolin material (KBEP). It is then characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetry (TG), and other methods. The polymer is utilized
for static adsorption of Cu2+ and Pb2+, and the kinetic analysis of the adsorption process is carried out. The results show that the layer spacing of kaolin increases substantially (from 0.69 nm to 0.81 nm) after modification. When the content of kaolin is less than 1.7%,
kaolin exists in intercalation or stripping state in waterborne polyurethane matrix. When the content of kaolin is higher than 1.7%, kaolin can exist in the form of agglomeration with waterborne polyurethane matrix. Compared with pure polyurethane, the composite’s thermal stability is
improved, and the maximum thermal weight loss of the hard section is increased by 50 °C. When kaolin content is 2.5%, the temperature of the hardness and the fastest thermal decomposition rate of the soft section increases by 30 °C and 26 °C, respectively. The adsorption test reveals
that the Cu2+ elimination rate reaches 93.7% when the addition amount of the prepared material reaches 1.5 g/L. When the addition amount of the prepared material reaches 0.6 g/L, the Pb2+ elimination rate reaches 95.8%. With the increase of the dosage of kaolin composite,
the adsorbability of the polymer to the two metal ions decreases gradually. Kinetic experiments show that the adsorption of Cu2+ and Pb2+ is in line with the pseudo-second-order kinetic (PSOK) equation. The adsorbability of Cu2+ and Pb2+ is 75.3
mg/g and 268.6 mg/g, respectively. The adsorption way is mainly chemical adsorption.
研究领域:
环境科学
·
材料科学
·
化学工程
·
废水处理
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Zeqing Liu,Lingmei Dai,Dehua Liu,Wei Du
Single-crystalline ordered macro–microporous CuBTC (SOM–CuBTC) is a promising carrier for lipase immobilization due to enhanced mass transfer and stability toward fatty acids. However, the low yield per mass of the template during the preparation process and the water instability of the SOM–CuBTC carrier have posed significant limitations on its practical applications. In this study, we addressed these challenges by introducing a novel dual-solvent system consisting of dimethyl sulfoxide (DMSO) and ethanol to obtain a stable precursor solution with a concentration approximately 10 times higher than that in previous literature, yielding 21.4 mg of SOM–CuBTC per gram of the polystyrene template. However, the decomposition of SOM–CuBTC in an aqueous system of lipase immobilization was observed. We explored chemical vapor deposition and sol–gel methods for hydrophobic modification on SOM–CuBTC. SOM–CuBTC coated by hydrophobic polydimethylsiloxane (PDMS) via the sol–gel method possessed excellent chemical stability and exhibited great potential for lipase immobilization with a significant increase by 98.7% in the specific activity. The obtained immobilized lipase not only showed improved thermal stability and pH tolerance but also displayed excellent catalytic performance in the synthesis process of 1-oleoyl-2-palmitoyl-3-linoleoylglycerol (OPL) by acidolysis. This work reveals the great potential of SOM–CuBTC and provides new insights into the rational design of metal–organic frameworks for enzyme immobilization in extensive applications.
研究领域:
材料科学
·
酶工程
·
生物催化
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Menghui Liu,Yunzhi Wang,Yanlv Chen,Liujun Li,Yang Sun,Yongchao Li,Yajun Yuan,Pan Lu,Wenkai Zhang,Pengfei Pang,Xin Peng,Hong Shan
Endovascular embolization can selectively deploy embolic agents into diseased or injured blood vessels to complete the treatment. However, traditional embolic agents still face challenges, such as poor intravascular diffusivity, non-biodegradable, unstable mechanical properties, radiolucency, and recanalization. Herein, we report a poly (lipoic acid-tannic acid)/tromethamine/Galinstan (PLTTG) dimethyl sulfoxide (DMSO) solution-derived hydrogel liquid embolic agent. By injecting PLTTG DMSO solution into body fluids, a PLTTG hydrogel can be formed in situ owing to the solvent exchange induced intra- and inter-polymer hydrogen bonding and electrostatic interactions. Moreover, the gelation time and injection forces of the solution as well as the mechanical properties and embolic pressure of the obtained hydrogels can be adjusted by changing the concentration of PLTTG. The PLTTG hydrogel can effectively embolize the renal artery and femoral vein without recanalization and displacement in rabbit models. Furthermore, the hydrogel can embolize the ruptured femoral artery to arrest active bleeding. Owing to the advantages of the hydrogel, including adjustable gelation time, mechanical properties, viscosities, injection forces, and embolic pressure, as well as good biocompatibility and biodegradability, radiopacity, excellent embolization performance and intravascular diffusivity, easy usage, low cost, allowing it to be a potential embolic agent to treat multiple vascular diseases in clinic.
研究领域:
生物医学工程
·
材料科学
·
血管外科
·
医疗器械
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）