ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wanshun Deng,Gang Wang,Lei Tang,Zhixiang Zeng,Tianhui Ren,Qunji Xue
Viscous oil adherence onto solid surfaces is ubiquitous and has caused intractable fouling problems, impairing the function of solid surfaces in various areas such as optics and separation membranes. Materials with superhydrophilicity and underwater superoleophobicity are very effective in elimination of oil fouling. However, most of them cannot dewet viscous oils and may malfunction without prehydration treatment. Herein, we report a facile and environmental strategy to prepare barium sulfate (BaSO4) nanocoating to dewet viscous oils on dry surfaces. Abundant surface polar groups (surface hydroxyl) on BaSO4 nanocoating enhance both hydrophilicity after oil fouling (underoil water contact angle <10°) and underwater superoleophobicity (underwater–oil contact angle >155°) and then facilitate oil dewetting ability. Different oils with viscosity up to 900 mPa·s can be easily eliminated after immersion into water. The results and force analysis also demonstrate that small surface roughness and ultrahydrophilicity under oil are beneficial to achieve oil dewetting property on dry surfaces. Furthermore, BaSO4 nanocoating displays excellent mechanical, thermal and chemical stability and can maintain oil repellency through various harsh conditions. Outstanding antioil fouling ability also enables the fabric coated by BaSO4 nanocoating to separate crude oil/water with flux higher than 28 000 Lm2–h–1 and separation efficiency larger than 99.9% and maintain effective separation performance even after 100 times of separation. Thus, the robust superhydrophilic BaSO4 nanocoating is potential in oil dewetting and waste oil remediation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Oleo Science
·
2024
·
IF 1.6
Siliang Ding,Xiaohan Chen,Bo Ouyang,Bo Yang,Weifei Wang,Yonghua Wang
In the pursuit of reducing oil separation in peanut butter, oleogels synthesized from diacylglycerol (DAG)-rich peanut oils, using glycerol monostearate (GMS) as the gelator, were examined as alternative stabilizers. In comparison to triacylglycerol (TAG)-rich peanut oils, the DAG oil-based oleogels exhibited better oil-binding capacities across increasing GMS concentrations. Intriguingly, thermal and rheological assessments pointed to a weaker network structure in DAG oil oleogels, as evidenced by their lower crystallization temperatures and reduced viscoelastic parameters (G' and G''). Insight from infrared spectroscopy revealed that this could stem from heightened intermolecular hydrogen bonding between the DAG oil and the gelator. When applied to peanut butter, DAG oil oleogels demonstrated efficacy in minimizing oil separation. Extended storage trials affirmed the long-term stability of peanut butter formulations incorporating these oleogels. Furthermore, sensory evaluations by panelists underscored favorable impressions, suggesting potential consumer acceptance. Overall, this study illuminates the promising role of DAG oleogels as effective, alternative stabilizers in peanut butter formulations.
研究领域:
食品科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science Bulletin
·
2025
·
IF 21.1
Han-Yue Yang,Bin Sun,Xue Xiao,Xuan Ai,Rui-Bin Jiang,Pei Chen,Yu Chen
Glycerol, a byproduct of biodiesel production, can be efficiently converted into valuable chemicals through electrocatalytic reaction. In this study, platinum (Pt) nanocrystals decorated on bismuth oxide (Bi 2 O 3 ) nanosheets (PtBi DONS) with an optimal Pt:Bi ratio of 1:1 were successfully synthesized using a galvanic replacement method. Pt 1 Bi 1 DONS exhibit remarkable electrocatalytic performance for glycerol electrooxidation, achieving an excellent catalytic activity (current of 0.82 A mg Pt –1 at 0.67 V vs. reversible hydrogen electrode (RHE)) and an exceptional selectivity of 96.6% for C 3 products, particularly glyceric acid. The superior performance stems from two key factors: (1) electron transfer from Bi 2 O 3 to Pt creates electron-rich Pt sites that suppress C–C bond cleavage and (2) Bi 2 O 3 facilitates favorable glycerol adsorption configurations through multiple hydroxyl group interactions. Mechanistic studies using operando spectroscopy and electrochemical impedance spectroscopy revealed that the synergistic effect between Pt and Bi 2 O 3 promotes rapid charge transfer and stable intermediate formation. Moreover, PtBi DONS showed excellent versatility in oxidizing other polyols compared with monoalcohols.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2016
·Vol. 125
·期 1
·155-162
·
IF 1.781
Liu Zhongguo,Wang Hui,Zhang Liyuan,Sun Daxin,Cheng Liang,Pang Cuicui
Sludge is an inevitable by-product of turbine oil during the operation of lubricating turbines. However, there are few reports of the detailed analytical results of the sludge. In addition, no global specification exists to evaluate the sludge formation from turbine oils. Hence, it is critical to analyze the contents of the sludge. In this study, we investigate both fresh and in-service (contains sludge) turbine oil based on ASTM standards. In-service turbine oil was first washed by petroleum ether to obtain the sludge and then characterized by FTIR, SEM, TG and EDAX. We found that the main compositions of sludge were C, O and N, while metals were <4 mass %. The analytical results show that antioxidant, defoamer, antirust and demulsifier are possible origins for the formation of sludge, which would be beneficial to decrease the sludge for the formulation of turbine oil.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Dawei Zhang,Gang Wang,Shudi Zhi,Kaile Xu,Lijing Zhu,Wenwei Li,Zhixiang Zeng,Qunji Xue
To improve the separation efficiency and decrease fouling of the membranes used in oil-in-water emulsions separation, a superhydrophilic and underwater superoleophobic TiO 2 /Al 2 O 3 composite membrane with ultra low oil adhesion was designed. TiO 2 nanorod arrays were prepared on Al 2 O 3 porous ceramic membrane surface by simple magnetron sputtering and hydrothermal oxidation. The microstructure and surface photosensitivity of TiO 2 nanorod array-coated ceramic membrane can effectively increase the efficiency of oil-water separation and reduce the degree of surface fouling. The layer of TiO 2 nanorod arrays not only reduced the pore size of traditional ceramic membrane (enhanced sieving effect of porous structures) but also endowed its superhydrophilicity (enhanced flux) and underwater superoleophobicity (enhanced oil/water selectivity and antifouling). Based on the superhydrophilicity (water contact angle (WCA) of 0°) and underwater superoleophobicity (oil contact angle (OCA) higher than 150°) of ceramic membrane, oil droplets were blocked by the membrane (oil-water separation efficiency 99.1% under gravity) and water will pass (flux is maintained at 41.8 L/(m 2 h) under gravity). It also has excellent anti-fouling ability due to the ultra-low oil adhesion force (0.084 mN) of the TiO 2 nanorod array-coating after UV irradiation. These features, combined with energy-saving, low-cost and easy-to-scale manufacturing schemes will be of great versatility and practicality in environmental rehabilitation and wastewater purification.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2017
·
IF 4.601
Wuhua Chen,Yefei Wang,Mingchen Ding,Shenglong Shi,Zhen Yang
Take palm oil and soybean oil biodiesels as example, crystallization behavior and rheological property of methyl and ethyl biodiesels were investigated. Differential scanning calorimeter (DSC) technique was used to analyze the crystallization behaviors of methyl and ethyl biodiesels, including the crystallization onset temperature and the variation of amount of crystal precipitation with temperature. Meanwhile, a thermodynamic model of regular solution was proposed and compared with the crystallization experiments. Comparisons suggested that the model can give a reasonable description of crystal precipitation of biodiesel. The rheological properties of methyl and ethyl biodiesels including the viscosity temperature curves as well as the variation of viscoelastic parameters with temperature during the cooling gelation process were measured by rheometer. Experimental results suggested that the crystallization onset temperature and the gelation temperature of ethyl biodiesels are decreased as compared with methyl biodiesels. When temperature is just below the crystallization onset temperature of methyl biodiesel, the crystal precipitation of ethyl biodiesel is much lower than methyl biodiesel, meanwhile, the same characteristic can be observed for the viscosity and storage modulus of methyl and ethyl biodiesels. As the temperature decreased, the crystal precipitation of ethyl biodiesel is gradually close to until equal to the methyl biodiesel. So as the temperature decreased, the differences between the viscosity, storage modulus of methyl and ethyl biodiesels are getting smaller, and then the viscosity and storage modulus of ethyl biodiesel are greater than those of methyl biodiesel.
研究领域:
化学工程
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Mengya Xu,Gang Wang,Zhixiang Zeng,Junjun Chen,Xingyuan Zhang,Longsheng Wang,Weiguang Song,Qunji Xue
The frequent marine oil spill accidents in nowadays has aroused great attention all over the world. Lots of superwetting absorption materials with 2D or 3D structures are fabricated to efficiently remove oil spill, but the desorption of the absorbed oil is more difficult. Oil contaminants adhere on the surface will decline the performance and reusability of the absorption materials. Discarding or burning them will bring secondary pollution. Faced with these problems, we prepared an oil extractor integrated by a superhydrophobic-superoleophilic stainless steels wire mesh and a 3D porous cellulose sponge with superhydrophilicity-superoleophilicity in air and superoleophobicity in water. The oil extractor can in situ collect oil spill no matter on the water or under the water. More importantly, it is good at underwater oil desorption, which ensure the recovery and reuse of oil, and meanwhile avoid the materials being fouled by oils. More than 85.5% of crude oil could be successfully discharged only in 2 min when the oil-contaminated sponge was placed in water. The findings in this work not only put forward a new strategy for collection and reuse of various “oils”, but also offer a facile method to achieve a combination of two kinds of materials with diverse wettability.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Wenting Zhou,Xinming Hu,Bin Zhan,Shuyi Li,Zhibiao Chen,Yan Liu
The development of surfaces with super anti-crude oil-fouling behavior and crude oil-water separation properties is still a global challenge owing to the high viscosity of crude oil. Herein, superhydrophilic and underwater superoleophobic surfaces were successfully prepared by a simple, green and environmentally friendly one-step dip coating method. In the whole process, microcrystalline cellulose with hydrophilic hydroxyl functional groups was introduced into the coating with the help of inorganic adhesives, water was the only solvent, and no other organic solvents or surface modifiers was added. Besides being highly resistant to low viscosity oils and achieving effective oil-water separation (more than 98.3% separation efficiency after 30 cycles), the surface effectively resisted crude oil adhesion and achieved high viscosity crude oil-water separation. In addition, the underwater oil contact angle can still reach 147.5° and 152.5° after 20 cycles of sandpaper friction tests and 50 cycles of finger pressure tests, respectively, which indicates excellent durability. Furthermore, the method can achieve excellent superhydrophilicity and underwater superoleophobicity on varieties of substrates (such as copper foil, aluminum sheet and glass), showing very extensive applicability. It is expected that such fabrication strategy can provide a low cost, green and environmentally friendly approach to construct a series of superhydrophilic and underwater superoleophobic surfaces to achieve super anti-crude oil-fouling and (crude) oil-water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Yu-Ling Yang,Man-Man Li,Li-Jing Zhu,Gang Wang,Zhi-Xiang Zeng
Polyvinylidene fluoride (PVDF) membrane offers excellent potential for efficient separation and purification of O/W emulsions. However, oil-fouling presents a major obstacle to its further application. Herein, a strong underwater superoleophobic surface was engineered to efficiently inhibit oil-fouling. PVDF- graft -poly(2-(dimethylamino) ethyl methacrylate) (PVDF- g -PDMAEMA) membranes were first fabricated via vapor-induced phase separation (VIPS), in which the nascent liquid film was left in a vapor bath for a predesigned time ( t e ). The surface roughness increases by an order of magnitude when t e increases from 0 to 240 s, and the underwater oil contact angle (UWOCA) correspondingly increases to more than 150°. However, it declines with time gone until the oil droplets on the underwater membranes were swallowed up. After surface zwitterionicalization by the reaction between PDMAEMA and 1, 3-propane sulfonate , a strong underwater superoleophobic surface was obtained, even after being soaked in water for 24 h. It endows the zwitterionic membrane with superior crude oil/water emulsion separation (with a flux of 749.7 ± 44.8 L m −2 h −1 and separation efficiency of 99.4 ± 0.1%) and excellent oil-fouling resistance (with a flux recovery rate of more than 90%), improving the potential value of porous membranes in oily water treatment .
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Soft Matter
·
2012
·Vol. 8
·期 21
·5888-5895
·
IF 4.39
Zhaoxing Liu,Yaodong Xu,Lei Cao,Chunyan Bao,Huanghui Sun,Lei Wang,Kerong Dai,Linyong Zhu
Biodegradable and biocompatible elastomer polymers have significant potential in biotechnology and bioengineering. In this paper, we designed, synthesized, and characterized a series of biodegradable and biocompatible elastomers based on phosphoester cross-linked vegetable oils (PVOs), which were prepared by simple cross-linking reactions between phosphorylated castor oil (PCO) and epoxidized vegetable oils (EVOs), epoxidized soybean oil (ESO) and epoxidized linseed oil (ELO), without any solvent or initiator, at 37 °C. The ratios between PCO and the EVOs, and the functionality of the EVOs, play a role in the properties of the elastomer polymers, such as their mechanical properties and degradation. Moreover, the elastomer polymers can be degraded completely on account of the fracture of the phosphoester and triglyceride. The elastic evaluation tests show that PVOs meet the demand for elastomers that can deform and return to their original dimensions even after 1000 repeats of the cyclic compression test. Cytotoxicity studies in vitro indicate that the elastomer polymers and their corresponding degradation products are compatible with the L929 cell line. And the implantation test for the elastomer polymers in animal skin shows that this kind of elastomer can be absorbed completely within 3 months, accompanying the restoration of the implantation sites to their normal architecture.
研究领域:
生物材料学
·
高分子科学
·
组织工程
·
再生医学
·
生物医学工程
·
药物递送
·
生物降解
✓ 已验证
DOI
高影响因子
Agronomy-Basel
·
2024
·Vol. 14
·期 2
·304
·
IF 3.3
Zhuoya Zhang,Zhaoguo Tong,Yuanyuan Shao,Guangcan Su,Kaikai Li,Chunmei Li
The main objective of this study was to evaluate the quality and select the best varieties from 85 olive varieties in the Liangshan region, China, from the perspective of oil content, fatty acid, and triacylglycerol compositions. Although 85 varieties of olive oil showed no difference in the type of fatty acid composition and the distribution of triglycerides, they varied greatly in the oil content, the relative proportion of fatty acids, and triglycerides. Principal component analysis (PCA) and cluster and heatmap analysis clearly divided the 85 samples into three groups. Group A included 36 varieties and was characterized by high oleic acid, mono-unsaturated fatty acids (MUFA), eicosenoic acid, OOO (glyceryl trioleate), and OOL (1-oleic acid-2-oleic acid-3-linoleic acid glycerides) contents, but rare palmitoleic acid, SFA (saturated fatty acid), and POP (1-palmitic acid-2-oleic acid-3-palmitic acid glycerides) levels. Group B contained 9 varieties of olive, with the main characteristics of high oleic acid, linolenic acid, MUFA, MUFA/PUFA, SFA, and OLnO (1-oleic acid-2-linolenic acid-3-oleic acid glycerides) content, but low in linoleic acid, PUFA (polyunsaturated fatty acid), PLL levels and ratio of omega-6 to omega-3 polyunsaturated fatty acids. Group C comprised 40 varieties, identified by high linoleic acid and PUFA levels but low ratios of oleic acid, MUFA, OOO, MUFA/PUFA, and the ratio of omega-6 to omega-3 polyunsaturated fatty acids. Combined with the oil content (FW) (%) of 85 varieties, we suggested four distinguished varieties in Group A, namelyLechín,Coratina,Koroneiki, andArbosana; three distinguished varieties in Group B, namelyPicual,Ezhi,Cornicabra; two distinguished varieties in Group C namelyFrantoioandArbequinaas the objects of large-scale cultivation by Chinese cultivators. More importantly, the obtained data also demonstrated that some locally bred specific varieties, such asZhongze-3andYuntai, had interesting unsaturated fatty acids and had cultivation and popularization value in China.Keywords:olive oil;fatty acid composition;triacylglycerol;principal component analysis
研究领域:
农业
·
食品科学
·
植物科学
·
化学分析
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2021
·
IF 4.952
Xi Cao,Yayu Pan,Wei Wei,Tinglan Yuan,Sen Wang,Lingyun Xiang,Yongjun Yuan
Effects of various fermentation conditions on fatty acid composition of single cell oil (SCO) from Trichosporon sp. F1-2 were investigated. Ten carbon sources clustered into two groups using hierarchical clustering algorithm and principal component analysis. Xylose and soluble starch from each group were further studied. SCO using xylose had a high oleic acid content, while the linoleic acid and α-linolenic acid content increased significantly in SCO using soluble starch especially at the sn -2 position. 20 and 31 triacylglycerol (TAG) types were detected, respectively. The increased types were rich in linoleic acid and α-linolenic acid. The effect of C/N ratios was the weakest (distance threshold 3.05), followed by inoculation amounts (3.08), fermentation time (4.30) and nitrogen sources (5.64). The optimum nitrogen source, C/N ratio, inoculation amount and fermentation time for SCO accumulation were ammonium sulfate, 60, 6% and 120 h, respectively. Two different SCOs were produced using xylose and soluble starch under optimum conditions, which were demonstrated to be potential substrates for synthesis of 1,3-distearoyl-2-oleoyl-glycerol (a cocoa butter improver) and MLM-type TAG (the dietary TAG with low caloric value) respectively. Therefore, changing the carbon source can help broaden application fields of SCOs and increase feedstock sources of structured TAG synthesis.
研究领域:
生物技术
·
食品科学
·
微生物学
✓ 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）