Surfaces and Interfaces
·
2023
·
IF 6.2
Huiying Xiang,Li Cheng,Guoyong Liu,Tao Zhu,Xu Dai,Zheng Wei,Jiang Zhou,Ruijin Liao,Yuan Yuan
Slippery liquid-infused porous surfaces (SLIPSs) with anti-icing properties are challenged by the lubricant loss. Many strategies (such as structure optimization, lubricant improvement) are used to retain the lubricant in the porous structure. However, the matching of modifier and lubricant is rarely studied, which is another key factor for durable anti-icing performance of lubricated surfaces. Herein, proper matching of different lubricants and modifiers were investigated. Perfluoropolyether oil (PFPE) and silicone oil (SO) are chosen as lubricants. Linear alkane (OTS) and fluorinated alkane (FAS) are chosen as modifiers. A series of SLIPSs were prepared by infusing lubricants into unmodified and modified anodized aluminum oxide (AAO) surfaces. The suitable matches (OTS with SO, FAS with PFPE) make the prepared SLIPS have high water mobility and enable high affinity between the lubricant and modified AAO surface. The former contributes to improving the anti-icing performance in the simulated glaze icing test, and the latter is beneficial to improving the durability during the icing/deicing cycles. This work provides useful information to determine the suitable pairs of lubricant-modifier for durable anti-icing lubricated surfaces.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2013
·
IF 4.612
Hong-Fei Tong,Dong-Qiang Lin,Dong Gao,Xiao-Ming Yuan,Shan-Jing Yao
Hydrophobic charge-induction chromatography (HCIC) is a novel downstream bioprocessing technology for antibody purification and it has several advantages over traditional purification processes. However, its separation selectivity still needs to be improved. In this work, sodium caprylate (NaCA) was used as the selective modifier to improve IgG purification from serum albumin containing feedstock with a typical HCIC resin, MEP HyperCel. The effects of NaCA on the adsorption equilibrium of bovine serum immunoglobulin G (IgG) and bovine serum albumin (BSA), as well as the dynamic binding and displacement behaviors were investigated. The binding and elution behaviors of these two proteins in the column were studied. It was found that adding 50–75 mM NaCA in the liquid phase could effectively reduce the adsorption of BSA on the MEP resin, but the same treatment has little influence on the adsorption of IgG. Moreover, the mechanism of the competitive binding between caprylate and MEP ligands on the surface of BSA is discussed. It was found that by controlling NaCA addition in the loading or washing buffer, the process efficiency of IgG purification from BSA containing feedstock can be improved, and the purity of IgG could reach to over 98%. The results indicated that caprylate could be a promising albumin-selective modifier to improve the separation efficiency of antibodies with the HCIC process.
研究领域:
生物技术
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蛋白质纯化
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抗体工程
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Lei Wu,Hongyan Wu,Qiusi Wen,Jun Zhou,Ahmed M. Aljuwayie,Poh Wai Chia,Gan Ye,Qiuli Zhang,Rock Keey Liew,Su Shiung Lam
Thermal desorption technology at low temperatures has been extensively researched. However, the challenge remains in maintaining soil ecological function while effectively removing PAHs from contaminated soil using this method. Based on the gas hammer fragmentation concept, this study presents the strategy of gas stripping (steam extraction) coupled with microwave remediation. A multifunctional bluecoke-based modifier (MnO 2 /KHCO 3 @BC) was prepared followed by an investigation on the removal effect, soil characteristics and remediation mechanism of MnO 2 /KHCO 3 @BC-assisted microwave remediation of pyrene (PAHs model) contaminated soil. The research findings indicate that MnO 2 /KHCO 3 @BC is more effective in generating oxygen vacancies, facilitating surface electron transfer , and enhancing the oxidation effect of ROS on pyrene compared to KHCO 3 @BC and MnO 2 @BC. Despite having slightly inferior electromagnetic properties to BC, MnO 2 /KHCO 3 @BC could achieve a microwave remediation temperature of approximately 300 °C under optimal experimental conditions. MnO 2 /KHCO 3 @BC demonstrated remarkable pyrene removal efficiency with a maximum removal rate of 98.34%, making it an ideal candidate for pyrene remediation. Moreover, the remediated soil exhibited a weakly acidic nature, with a significant decrease in particle size and a substantial increase in potassium content. The study also highlighted a novel synergistic mechanism of ''microwave heating - gas stripping - oxidation,'' which can efficiently remove most of the pyrene adsorbed inside and outside of soil particles and degrade it into low-toxic and small-molecule organic matter, CO 2 , and H 2 O. Overall, the findings of this study could hold potential significance for upcoming endeavours concerning polluted industrial areas.
研究领域:
环境科学
·
土壤修复
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DOI
高影响因子
PLoS One
·
2021
·Vol. 16
·期 6
·e0252203
·
IF 3.24
Weiwei Wang,Zhuangzhuang Liu,Qimin Song,Xindi Zhang,Shengkai Jiao,Yao Xu,Quanda Xu,Dezun Sheng
The tribological performance of organic molybdenum in the present of organic friction modifier was investigated in this study. Three types of organic friction modifiers were selected, which are Glycerol monooleate, Pentaerythritol and N , N -Dimethylhexadecylamine. The organic molybdenum are MoDTC, MoDDP and molybdenum amide. Friction coefficient and wear were studied in block-on-ring test rig with steel test specimens. Experimental results indicate the Pentaerythritol shows synergistic effect with MoDTC in wide range temperature, while increased the friction coefficient of molybdenum amide in high temperature. N , N -Dimethylhexadecylamine shows synergistic effect with molybdenum amide, while hindered the friction reduction performance of MoDTC in low temperature. The presence of Glycerol monooleate reduced friction coefficient of MoDTC in low temperature, while increased the friction coefficient of molybdenum amide in most situations. All the tested organic friction modifiers improved the friction reduction performance of MoDDP. Most of the tested organic friction modifiers reduced the wear of organic molybdenum. The PT shows the best anti-wear performance with MoDTC. The tribo-chemical products in test specimens lubricated with different lubricant formulas indicate that the presences of Pentaerythritol promotes the production of MoS 2 in MoDTC. N , N -Dimethylhexadecylamine promotes the production of MoS 2 in molybdenum amide. The side products of MoO 1.6 S 1.6 and Cr/MoS 2 of MoDDP in high temperature lead to high friction coefficient.
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
INORGANICA CHIMICA ACTA
·
2025
·
IF 3.2
Xingyue Liu,Xuanhao Huang,Yiting Wang,Zhuang Wang,Qiao Yu,Hang Zhou,Rui Li,Songdong Ding
Tri- n -butyl phosphate (TBP), n -octanol and N,N -dihexyloctanamide (DHOA) are often used as phase modifiers to prevent the formation of the third phase during the extraction of trivalent lanthanides and actinides by N,N,N′,N′ -tetraoctyl diglycolamide (TODGA) in spent fuel reprocessing process. In this context, the effects of these three modifiers on the thermodynamic and kinetic behaviors of 0.20 mol·L −1 TODGA in n -dodecane toward Nd 3+ in nitric acid solution were studied and compared together for the first time. A systematic comparison of the effects of the three modifiers on the extraction distribution ratio, stripping percentage, loading capacity, aggregation and extraction kinetics was carried out with the aim of selecting a phase modifier for the TODGA-based process that would work optimally and to elucidate the impact of the modifiers in the TODGA extraction system. It is found that modifier reduces the capacity of TODGA to extract Nd 3+ in the order of DHOA > TBP > n -octanol, slightly hinders the stripping of Nd 3+ , while significantly enhancing the loading capacity of TODGA. With increasing the modifier concentration, the limiting organic phase concentration (LOC) for Nd 3+ increases. At the modifier concentration below 0.30 mol·L −1 , n -octanol has the greatest promotion effect on the LOC value, while at that above 0.50 mol·L −1 , TBP has the best effect. Meanwhile, through the dynamic light scattering analysis for the loaded organic phase, it is also found that the particle size of the aggregates in organic phase decreases significantly upon the addition of modifier. Furthermore, the extraction kinetics studies in a Lewis cell indicate that the addition of modifier can prolong the time to reach extraction equilibrium, and decrease the extraction rate. Although the modifier also exerts some influence on the reaction order and extraction rate constant to some extent, it does not alter the underlying regime of the extraction reaction.
研究领域:
化学工程
·
核燃料循环与材料科学
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DOI
高影响因子
WATER ENVIRONMENT RESEARCH
·
2020
·Vol. 93
·期 5
·693-702
·
IF 1.369
Yonglei Wang,Ya'nan Li,Liping Tian,Ling Ju,Yulei Liu
Microplastics (MPs) are widely distributed in freshwater and have the following characteristics: small size, strong hydrophobicity, difficult degradation, and easy adsorption of toxic substances. These characteristics pose a potential threat to the environment and human health. In this paper, three common MPs in freshwater were removed by conventional dissolved air flotation (DAF) and positive modification DAF (Posi-DAF). The results showed that the optimal removal efficiency of MPs by conventional DAF was 32%–38% at 0.4–0.5 MPa. This indicated that the adhesion between microbubbles (MBs) and MPs was not ideal when the hydrophilic/hydrophobic interaction was the dominant mechanism. However, the removal efficiency of MPs was increased by 13.6%–33.7% compared with that of conventional DAF after two surface modifiers were used on MBs. This result indicated that in addition to the hydrophilic/hydrophobic interaction, both charge attraction and sweeping had positive effects. Practitioner points The removal efficiency and mechanism of MPs by posi-DAF were investigated. The characteristics, particle number, and adhesion of microplastics were measured. Conventional DAF was dominated by hydrophilic/hydrophobic interactions. CTAB Posi-DAF was dominated by charge attraction. PDADMAC Posi-DAF was dominated by charge attraction and sweeping.
研究领域:
环境科学
·
水处理工程
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产品关联
DOI
PubMed
高影响因子
Environmental Science-Nano
·
2018
·Vol. 5
·期 7
·1584-1594
·
IF 6.087
Peipei Yang,Qi Liu,Hongsen Zhang,Jingyuan Liu,Rongrong Chen,Rumin Li,Di Wu,Xuefeng Bai,Jun Wang
A novel kind of graphene oxide-based (GO-based) adsorbent was successfully prepared by chemical modification with cetyltrimethylammonium bromide (C16TAB) and phytic acid (PA) for adsorbing uranium (U(VI)). A close relationship between PA and GO interlayer spacing was investigated; the optimal spacing was 3.88 Å with 4.5 mL PA. A series of adsorption experiments were carried out with the as-prepared product (denoted as GO–C16TAB–PA) to capture U(VI) ions. The adsorption capacity of the GO–C16TAB–PA adsorbent can reach 923 mg g−1 (298.15 K) with an excellent removal rate (∼90%), which demonstrates a 527% increment compared with that of pristine GO in the same environment (pH = 8, Co = 500 mg L−1). Meanwhile, the adsorption equilibrium time of GO–C16TAB–PA was shortened by 50% compared with that of pristine GO. In addition, the GO–C16TAB–PA adsorbent exhibited superior recyclability with a six-adsorption–desorption-cycle test. Finally, the fabricated GO–C16TAB–PA adsorbent exhibited excellent adsorption performance in simulated seawater, providing a theoretical guide and methodology for further seawater extraction of uranium(VI).
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
Advanced Biosystems
·
2018
·Vol. 2
·期 10
·1800115
·
IF 0
Jin Hong,Yu-Feng Chen,Yu Ma,Fen-Fen Zhang,Chun-Ming Wang,Ya Ding
To directly compare the surface modifier effects on the property regulation of nanoparticle (NP)-based systems, a fluorescence quenched nanoprobe (GpF) responsive to matrix metalloproteinases (MMPs) is employed as a demonstration. Polyethylene glycol (PEG) and bovine serum albumin (BSA) are modified on the surface of GpF via different modes, the S Au covalent bond and nonspecific interaction, respectively. PEG and BSA display similarly protective capability to GpF and increase their biocompatibility that are demonstrated in stability, cytotoxicity, and hemolysis studies. Although PEGylated NPs show better in vivo long circulation property than BSA-decorated ones, the merit of BSA in controlling the system size in a relatively small range improves the penetration of GpF-BSA in tumor tissues and reduces the accumulation in normal tissues. Through an MMP-dominated catalysis and then a glutathione-assisted replacement process, the fluorescence recovery of GpF-BSA shows higher efficiency than PEG-modified NPs. It can be explained by the low steric hindrance and exchangeable manner of BSA on the surface of GpF. The results in this work demonstrate that an endogenous protein having dysopsonization function will be a promising material for the construction and surface modification of nanosystems for biomedical applications.
研究领域:
生物医学工程
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纳米医学
·
分子生物学
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产品关联
DOI
POLYMER COMPOSITES
·
2025
·
IF 4.7
Jing Wang,Penghao Sun,Zhen Huang,He Liu,Shuangsheng Zhang,Yueyue Zhu,Hongxiao Wang,Xu Xu,Xujuan Huang
Cellulosic paper-based materials are considered to be one of the most potential candidates to replace non-degradable plastics, but the strong affinity between cellulose and water causes cellulosic paper-based materials to face the dilemma of poor water resistance and weak wet strength. Herein, a fatty acid-based hydrophobic modifier (SAT) is constructed by amidation reaction between (3-aminopropyl)triethoxysilane and stearic acid. The ethoxy groups in the structure of SAT can be covalently crosslinked with the hydroxyl groups of cellulose through hydrolytic condensation, thereby making cellulose paper-based materials exhibit excellent properties including (1) high mechanical properties (the dry-state tensile strength has doubled from 22.3 to 46.8 MPa, while the wet-state tensile strength has surged from 0.47 to 20.0 MPa), (2) long-term stability (mechanical properties remain almost unchanged after 40 days storage at 80% RH), (3) superb water resistance (soaked in water at 25°C for 1 h, water absorption drops from 247.0% to 56.5%; at 90°C, it falls from 290.5% to 82.9%), (4) eco-friendly (it can be completely degraded after being buried in soil for 90 days, or it can be recycled and reused). The aforementioned impressive performance positions SAT-modified cellulose paper as a formidable contender for plastic replacement in packaging applications. Highlights Fatty acid-based modifier (SAT) can modify cellulose by chemical bond. The low polarity of long-chain alkanes enables cellulose's hydrophobicity. Covalent crosslinking of SAT with cellulose ensures superb strength SAT paper is an unrivaled combination of degradability and recycling.
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
Petroleum Science
·
2023
·
IF 5.6
Fan Ding,Xin Jin,Tao Shen,Shan-Shan Mao,Qing Zhao,Mang-Lai Gao
Wettability is an important surface property that deserves to further explore the factors on its alteration. Series of bis -N-heterocyclic quaternary ammonium salts with different spacer length and N-heterocyclic headgroups (morpholinium (BMMB, BMMD and BMMH), piperidinium (BPMH) and piperazinium (BMPMH)) have been synthesized and employed for altering the wettability of vermiculite and its derivates (Vts) treated by Li + -saturated heating method. The results of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG-DTG), scanning electron microscopy (SEM) and N 2 adsorption/desorption isotherms indicate that all of the bis -N-heterocyclic quaternary ammonium salts have been successfully inserted into the vermiculite layers, leading to the organic monolayer. The results of capillary rise tests combined with Lipophilic to Hydrophilic Ratio ( LHR ) values unveil the wettability alteration of the organo-Vts. As the layer charge decreases, the hydrophilicity of the organo-Vts gradually increases, which is probably caused by the decline in binding sites. As the result of the change in spacer length of modifier, the wetting properties of morpholinium-based organo-Vts change in order of BMMD-Vts > BMMH-Vts > BMMB-Vts, and difference in N-heterocyclic headgroups leads to the sequence of wettability: BMPMH-Vts > BPMH-Vts > BMMH-Vts. Layer charge of Vt, spacer length and the type of the N-heterocyclic headgroup of modifier have the synergistic effect on the regulation of the wettability.
研究领域:
材料科学
·
表面化学
✓ 已验证
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2024
·
IF 6.9
Hongyan Deng,Yuting Song,Wenbin Li,Mah Noor Fatima,Hamida Bibi,Siyu Ye
Antibiotics is one of the four types of new pollutants which are widely concerned in the world. To investigate the performance and economy of antibiotic adsorption by a composite made of clay, plant decomposed liquid (DL), and chemical modifier, bentonite (B) and kaolin (K) were modified by the DL of Alternanthera philoxeroides to prepare biological clays. Then, dodecyl dimethyl betaine (BS), polyacrylamide (PAM), and ethylenediaminetetraacetic acid (EA) were compositely modified on the biological clay to prepare different chemical–biological clays. The thermodynamic and kinetic characteristics of oxytetracycline (OTC) and chlortetracycline (CTC) adsorption were investigated by batch treatment. The adsorption changes in antibiotics on the modified clays under various pH levels, ionic strengths, and temperatures were compared, and the economy of antibiotic adsorption by different modified clays was analyzed. The maximal adsorption capacity ( q m ) values for OTC and CTC were 82.48–301.08 and 63.00–258.26 mmol/kg, respectively, ranking in the order of PAM- > BS- > EA-modified biological clays. The q m values of antibiotics by different modified Bs were higher than those by different modified Ks. In the pH range of 3–7 and temperature range of 10 °C–30 °C, high temperature and pH were conducive to antibiotic adsorption, which was determined as a spontaneous, endothermic, and entropy-increasing process. The amount of antibiotic adsorption initially increased and then decreased with the increase in ionic strength, with the maximum adsorption observed at 0.1 mol/L ionic strength. The adsorption of antibiotics by different modified clays conformed to the pseudo-first-order kinetic equation. The economy ( q m /price) of different m odified clays for antibiotic adsorption ranged between 29.55 and 169.66 mg/¥, and the PAM-modified biological clays showed the highest economy. The modified Bs had higher economy in antibiotic adsorption than the modified Ks.
研究领域:
环境科学
·
生物化学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Ziang Zhao,Xiaojiang Huang,Zhiqiang Zhang,Heliang Pang,Xuan Wang,Ping Li,Chunbo Li,Jinsuo Lu
The problem of odor and taste caused by geosmin had been widely discussed globally. While existing water treatment processes were difficult to remove geosmin cleanly and efficiently, and the traditional aeration method of micro-nano bubbles (MNBs) led to low removal efficiency due to the low probability of collision between the bubbles and the contaminants. In this study, micro-nano bubble modification technique was used to improve the removal efficiency. Three surface modifiers, hexadecyl trimethyl ammonium bromide (CTAB), chitosan (CTS), and poly dimethyl diallyl ammonium chloride (PDADMAC), were selected for this study. The effects of the surface modifiers on the properties of MNBs and the effects of these changes on the removal efficiency of GSM were explored. The experimental results showed that when all three modifiers were dosed at 5 mg/L, the PDADMAC-modified MNBs had the best GSM removal effect of 70.9 %, while the Zeta potential of the effluent was lower at 4.17 mV, which had less influence on the downstream process, and was an ideal modifier. The contribution of various removal pathways to GSM removal was also explored through intermediate product analysis combined with variable control experiments. The experimental results showed that the enhanced removal of GSM was attributed to the enhanced capture of GSM by PDADMAC-modified MNBs and the enhanced oxidation of GSM by PDADMAC-modified MNBs. At the same time, the removal efficiency of this process in natural waters decreased by <5 % only. This study could provide data and theoretical support for the enhanced removal of olfactory compounds by modified MNBs for application in practical engineering.
研究领域:
环境科学
·
水处理工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）