JOURNAL OF CHROMATOGRAPHY A
·
2015
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IF 4.169
Qi-Ci Wu,Dong-Qiang Lin,Wei Shi,Qi-Lei Zhang,Shan-Jing Yao
Mixed-mode chromatography (MMC) is a new technology that uses specially-designed ligands to improve the adsorption selectivity with multimodal protein–ligand interactions for protein separation. A new MMC resin TA-B-6FF with tryptamine as the functional ligand was prepared and used for human serum albumin (HSA) separation. Adsorption equilibria of plasma-derived HSA (pHSA) were investigated and compared with a commercial tryptophan-based resin (MX-Trp-650m), and the influence of pH and salt addition was studied. The results showed that weak acidic conditions (pH 5.0–7.0) were favorable for HSA adsorption. The maximum adsorption capacity of TA-B-6FF was 141.33 mg/g at pH 5.0, which was two times higher than that of MX-Trp-650m. TA-B-6FF also showed better salt-tolerance than MX-Trp-650m. Moreover, TA-B-6FF was used to separate recombinant HSA (rHSA) from Pichia pastoris culture broth. The results indicated that rHSA could be directly captured by TA-B-6FF without dilution or pH adjustment. High purity (87.75%) of rHSA monomer could be obtained with a recovery of 98.53% through two-step elution process. Total content of rHSA monomer and degraded fragment was 99.75%, the removal of host cell proteins reached about 90%. The results demonstrate that new TA-B-6FF resin has a great potential for rHSA purification directly from the complex fermentation broth.
研究领域:
生物化学
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蛋白质纯化
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生物技术工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 46
·31914-31924
·
IF 10.7
Renzhong Deng,Yunqi Li,Qing Li,Yu Qiu,Haixiang Feng,Yangming Liu
Solar-driven interfacial evaporation is regarded as a very promising strategy to alleviate the pressing freshwater scarcity. However, owing to the trade-off between thermal localization and ion transport, simultaneously achieving remarkable evaporation performance and ultra-high salt resistance is challenging. In this work, inspired by the skin effect of currents in wires, we constructed a skin-effect-inspired three-dimensional solar evaporator (SEISE) by controlling the porosity of the evaporator structure based on the principle of division of responsibilities and collaborative matching. Specifically, the SEISE with non-uniform porosity can realize the localization of water transport through its surface layer with low porosity, precisely matched with the thermal localization resulting from the internal body with high porosity and extremely low thermal conductivity, thereby greatly enhancing the interfacial evaporation performance. The maximum evaporation rate of the SEISE can remarkably reach 6.0 kg m−2 h−1 under 1 sun. Furthermore, the diffusion and convection of ions in the SEISE were significantly enhanced because of the rapid water transport within its surface layer. No salt crystals were observed on the evaporation surface after continuous operation in ultra-high salinity brine (25 wt%) for 48 h. This work demonstrates a highly efficient and feasible strategy for developing next-generation solar evaporators.
研究领域:
材料科学
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能源工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2024
·
IF 11.4
Qingyang Xue,Peng Xiao,Jincui Gu,Wenqin Wang,Luke Yan,Tao Chen
Solar-driven water evaporation, as an environmentally benign pathway, provides an opportunity for alleviating global clean water scarcity. However, the rapidly generated interfacial steam and localized heating could cause increased salt concentration and accumulation, deteriorating the evaporation performance and long-term stability. Herein, a novel superhydrophobic sand solar (FPPSD) evaporator with a core-shell structure was proposed through interface functionalization for continuous photothermal desalination. The collective behavior essence of the sand aggregate gave itself micron-scale self-organized pores and configurable shapes, generating desirable capillary force and supplying effective water-pumping channels. More importantly, combining the dopamine, polypyrrole (PPy), and 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTS) through π-π conjugation and multiple hydrogen bonding effects gave the FPPSD evaporator with stable superhydrophobic property and highly efficient photothermal conversion capability. Therefore, the FPPSD evaporator showed a continuous and stable photothermal performance even after 96 h continuous evaporation under 3-sun irradiation for 10 wt% saline solution, among the best values in the reported works of literature, demonstrating its excellent salt-resistance stability. Furthermore, this novel FPPSD evaporator displayed outstanding environmental stability that kept its initial water transport capacity even after being treated under harsh conditions for 30 days. With excellent salt-resistance ability and stable environmental stability, the FPPSD evaporator will provide an attractive platform for sustainable solar-driven water management.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Run Guo,Juanli Chen,Jing Fang,Xingjiang Wu,Zhensheng Yang,Zhiying Wang,Hao Li
Hydrogels with a low evaporation enthalpy and high water-molecule activation capability are regarded as promising substrate materials for solar-driven interfacial evaporation. However, the uncontrollable porous channels and cross-linking degree of traditional hydrogels limit water mass transportation, light absorption sites, and salt reflux and therefore result in low evaporation efficiency, poor salt tolerance, and terrible operational stability. Herein, we report poly(vinyl alcohol)/carbon nanotubes-co-poly(acrylic acid)-co-poly dimethyl diallyl ammonium chloride (PVA/CNTs-co-PAA-co-PDADMAC) (PADM) polyelectrolyte hydrogels via chemical cross-linking and polymerizing strategy. The as-prepared polyelectrolyte hydrogels possess interconnected porous channels (abundant porosity of 76.24%, high total pore area of 0.99 m2 g–1, large average pore diameter of 18.79 μm) and controllable cross-linking degree (good mechanical property), which can greatly promote the water mass transportation (0.395 g min–1), light absorption sites, and salt reflux. As a result, the PADM polyelectrolyte hydrogels can maintain high evaporation rate of 3.58 kg m–2 h–1, excellent salt tolerance (evaporation rate of 3.18 kg m–2 h–1 under 20 wt % high-concentration brine), and superior operational stability (invariable evaporation rate after 8 days of continuous evaporation), which exhibits great advantage in solar-driven interfacial evaporation.
研究领域:
材料科学
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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
·
2025
·
IF 5.4
Liyin Zhang,Shanshan Dai,Huimin Dai,Ying Xiong,Xianwu Jing,Jian Lan,Xiaowen Zhao
Hydrophobic association water-soluble polymers (HAWSP) have been used as drag reducer in slick-water fracturing fluids, however, the shear dilution behavior and poor salt resistance significantly impedes their practical application under complicated working condition. In accordance with the problems, the twin-tail HAWSP P(AM-AA-AMPS-DAPO) was prepared by free radical polymerization in this study. Compared to single-chain and short-chain structures, the twin-tail polymer increased two C12 hydrophobic side chain and hydrophilic EO chain on the basis of AM/AA/AMPS conventional short chain polymer, it was not introduced rigid structures such as rings, which was able to associate more quickly in aqueous solution and the molecular chain stretched faster while ensuring solubility. Under the synergistic effect of twin-tail chain and quaternary ammonium salt cation, P(AM-AA-AMPS-DAPO) was made rapid formation of hydrophobic clusters, and provided a robust network structure, thereby effectively resisting the harmful effects of salt ions and mechanical forces. P(AM-AA-AMPS-DAPO) demonstrated remarkable properties, including rapid dissolution, exceptional resistance to salt and shear resistance. P(AM-AA-AMPS-DAPO) was reached a high drag-reduction rate (DR) 76.05 % at 400 mg/L after shearing 600 s, dissolving in aqueous solution was only 210 s. The tolerance concentrations of P (AM-AA-AMPS-DAPO) to Na + , Mg 2+ and Ca 2+ were respectively as follows: 120,000 mg/L, 8000 mg/L and 8000 mg/L. P(AM-AA-AMPS-DAPO) Molecular dynamics simulations reveal the hydrophobic interaction of P(AM-AA-AMPS-DAPO) in fresh and saline water, and it is analyzed the drag-reduction mechanism.
研究领域:
化学工程
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石油工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Congcong Li,Bo Zhu,Zixiao Liu,Jiangtong Zhao,Ruru Meng,Lisha Zhang,Zhigang Chen
Photothermal membranes have been widely developed for solar seawater desalination, but their practical applications are limited by high evaporation enthalpy and solid-salt crystallization. To solve this problem, we prepared an anionic polyelectrolyte-based hydrogel (APH) as an “all-in-one” evaporator, possessing both photothermal property (to evaporate seawater) and electrostatic repulsion (to avoid solid-salt crystallization). The APH was prepared by freeze-thaw method, and it was composed of poly(vinyl alcohol) as framework and poly(3,4-ethylenedioxythiophene): poly(sodium-p-styrenesulfonate) as solar absorber. The fabricated material showed porous structure with solar absorption efficiency of 95.5% in 380–2500 nm. After soaking by water, the APH exhibited an evaporation enthalpy as low as 1624.14 kJ kg −1 with a high intermediate/free water ratio of 2.27:1, deriving from the interfacial electrostatic effect of SO 3 − and large amount of OH – from poly(vinyl alcohol) frame. Under the irradiation of simulated sunlight (1.0 kW m −2 ), the APH showed a high evaporation rate of 2.5 kg m −2 h −1 and its solar evaporation efficiency reached 90.7%. Importantly, the SO 3 − groups can efficiently separate anions (such as Cl − ) from cations (such as Na + and Mg 2+ ) in the evaporator, avoiding the formation of solid-salt crystals. The excellent evaporation performance and salt tolerance of APH confer broad practical prospects for solar-driven seawater desalination.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Qilin Yang,Shuangping Liu,Aibao Sun,Xin Li,Tiantian Liu,Xiao Han,Jian Mao
Amine oxidases have strong capabilities for the degradation of biogenic amines (BAs) in fermented foods. However, their application is limited by substrate specificity, and high concentrations of ethanol and salt can hinder their effectiveness. This study presents a novel approach utilizing comparative genomics, protein clustering analysis, and full homology modeling to identify three amine oxidases: KCYOBN from the salt-resistant Bacillus subtilis, and LYYOBN1 and LYYOBN2 from the ethanol-resistant Bacillus cereus. These enzymes are highly similar in structure and exhibit broad substrate specificities. KCYOBN maintains over 84% relative activity at 20% (w/v) NaCl, while LYYOBN1 and LYYOBN2 retain over 32 and 21% relative activity at 25% vol ethanol. Variations in key residues are one of the reasons for the differences in tolerance. In fermented foods, KCYOBN degraded 45.97% of the total BAs in cooking wine and 38.33% in fish sauce. LYYOBN1 achieved the highest degradation rate of 32.93% in huangjiu. LYYOBN2 exhibited degradation rates of 30.00% in soy sauce and 35.14% in wine with no significant impact on flavor compounds. The significance of this work lies in the identification of the novel salt-resistant KCYOBN and ethanol-resistant LYYOBN1 and LYYOBN2 through this new method, which can simultaneously degrade multiple BAs and have a broad application potential.
研究领域:
微生物学
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食品科学
·
酶工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2019
·Vol. 26
·期 11
·1-10
·
IF 1.53
Zhao Tianhong,Zhang Yiwen,Peng Guofeng,Chen Yin
A branched hydrophobicity associated with polyacrylamide based on silica was synthesized successfully. The structure of the polymer was characterized by Fourier Transform Infrared Spectrometer (FT-IR), 1 H Nuclear Magnetic Resonance ( 1 H NMR) and Scanning Electron Microscopy (SEM). Several properties such as intrinsic viscosity, temperature resistance, salt tolerance, shear resistance and viscoelasticity of the polymer were evaluated. Experiment results had demonstrated that the introduction of vinyltriethoxysilane (VTS-SiO 2 ) and branching molecular structure could endow the polymer with excellent temperature tolerance capability, salt and shear resistant capability.
研究领域:
高分子化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tianyang Cui,Wei Cai,Fukai Chu,Zhaoxin Li,Yapeng Zheng,Zhou Gui,Yuan Hu
Compared with conventional two-dimensional (2D) structure, three-dimensional (3D) solar steam generators have presented a considerably higher evaporation rate due to their structure superiority. As an emerging field, 3D printing technology has been attached by significant attention due to its feasibility and designability in the fabrication of micro-nano structures. Herein, inspired by natural light-trapping structures, a novel hierarchical structure assembled from flower-like cobalt tetroxide and 3D-printed stent is prepared. Based on the geometrical light trapping effect, both the flower-like structure in cobalt tetroxide and the hollow morphology in 3D-printed stent can significantly enhance the solar absorption and conversion efficiency through multiple reflection-incidence processes. Since the wetting direction in the cylindrical structure is always from the edge to the center, there will be a large number of salt particles at the edge of the cylinder falling by the virtue of gravity, thus achieving a high salt tolerance, and this process is illustrated by molecular dynamics simulation. Along with the rapid photo-thermal response in the solar spectrum , this 3D-printed hierarchical structure coated with flower-like cobalt tetroxide has achieved a high steam generation rate of 2.028 kg m -2 h −1 under one sun irradiation (1.0 kW/m 2 ) and excellent decontamination ability for organic dye-containing solution. Meanwhile, the desirable steam generation rate can maintain an average value of more than 1.8 kg·m -2 h −1 for long time. This 3D-printed solar evaporator is highly efficient and salt-tolerant, attributed to the enhanced geometrical light-trapping and artificial channel-array structure, presenting an effective solution for enhancing solar absorption and conversion.
研究领域:
材料科学
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能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Rui Zhu,Leitao Zhang,Yu Zhang,Panpan Zhang,Yunling Jia,Qiuli Cheng,Wenlan Wu,Junbo Li
To develop an excellent two-dimensional (2D) adsorbent with an ultrahigh adsorption capacity and salt-tolerance is much of importance in actual wastewater treatment. In this work, 2D acetate-based light lanthanide fluoride nanomaterials (F–Ln nanosheets) are identified as high-efficient adsorbents for anionic dye decoloration. F–Ln nanosheets are prepared through a hydrothermal synthetic methodology at room temperature and pressure. Multiple characterizations demonstrate that surface acetates exchange with exogenous anions is the prominent characteristic of these nanosheets. Adsorption experiments infer that adsorption processes obey a pseudo-second-order kinetics model and a Langmuir isotherm model. The maximum Langmuir adsorption capacity for Congo red and Coomassie brilliant blue G-250 is 4334 mg/g and 2827 mg/g, respectively. The mechanism analysis suggests that surface acetates exchange of F–Ln nanosheets is responsible for their ultrahigh adsorption capacity. Besides, F–Ln nanosheets present an ultrahigh salt-tolerance in saturated NaCl or high-concentration Na 2 SO 4 , K 2 CO 3 and NaNO 3 solution. Computational studies claim that surface acetates exchange with dye anions, which has a higher binding strength than common salts, is the key to induce an ultrahigh salt-tolerance. With an ultrahigh adsorption capacity and salt-tolerance, we believe that F–Ln nanosheets promise an outstanding platform to develop excellent adsorbents for environment remediation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Yanan Wei,Xiaofei Cao,Jun Hu,Neng Li,Li Sun,Weihua Li,Hongwei Liu
The hydration of wettable materials can help to improve their anti-biofouling effect, but their hydration stability under high salinity conditions is a challenge considering the future applications in natural marine environments. Inspired by the self-cleaning properties of crustaceans, chitosan (CS)/Poly (vinyl alcohol) (PVA) hydrogels have been prepared, and their anti-biofouling and salt tolerant mechanism were deeply investigated using surface analysis and molecular dynamics simulation . Interestingly, it is found that CS/PVA hydrogels can be controllably triggered at a low pH, and they can self-adjust to enhance anti-biofouling performance following the changes of environmental conditions. The hydration of CS/PVA hydrogels is enhanced in seawater because of a low salt sensitivity factor ( f ) of these hydrogels with a value of less than 0. Super hydrophilicity of CS/PVA hydrogels makes water drop achieve super spreading within 66.5 ms. Compared to PVA hydrogels, almost no crude oil, protein and algae can adhere to the surface of the prepared CS/PVA (0.2:1) hydrogel. The field tests in the south sea of China also demonstrate that CS/PVA (0.2:1) hydrogel has an excellent anti-biofouling ability after 6 months of testing. The anti-biofouling mechanism is also discussed according to the experimental results and molecular dynamics simulation.
研究领域:
材料科学
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海洋生物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Siqi Qi,Yuhan Zhang,Junjie Shi,Yue Wang,Jiwei Gao,Wenxin Fan,Kunyan Sui,Pengfei Qi
The integration of nanostructured materials into hydrogel matrix with chemical gradient holds great promise in gathering the pollutants and enhancing their adsorption or photocatalytic performance. However, the electric potentials rooting in the common gradient polyelectrolyte hydrogel are almost completely shielded by the co-existing counter-ions. In this study, a salt-tolerant gradient polycationic electrolyte hydrogel was fabricated by free radical copolymerization under the induction of unilateral UV illumination, which was used as nanofillers matrix. The cation-π interactions between the adjacent cations and aromatic rings endow the gradient polycationic electrolyte hydrogels deserving the salt-tolerant properties. Thus, the build-in electric potentials are still reactive on enrichment of the anionic heavy metals in highly concentrated salt solutions, altering the defects of the common gradient polyelectrolyte hydrogel. Using Sb(V) adsorption and Cr(VI) photocatalytic reduction as target reactions, the gradient composite hydrogels always display fast and high removal capacities towards these anionic pollutants in the saline solutions of 500 mM, as well as good stability and reusability. This salt-tolerant hydrogel matrix provides a smart material platform with self-driven forces in the fields of pollutant enrichment and removal.
研究领域:
环境科学
·
材料科学
✓ 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）