DESALINATION
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2025
·
IF 9.8
Xiaoping Feng,Yanhui Xie,Xiang Qin,Qingbin Zhao,Dongying Hu,Fangchao Cheng
The easily compacted filter layer, low water flux, and rapid flux decay remain bottlenecks for cellulose triacetate (CTA)-based reverse osmosis (RO) membranes for desalination. Focusing on these issues, hierarchically structured CTA-based membranes were fabricated by embedding sodium alginate (SA) gel as the interlayer between CTA (DMSO as solvent) and polyamide (PA) layers via gel-regulated interfacial polymerization (IP). The SA gel regulates the diffusion rate of phenylenediamine and the IP rate, reducing the PA layer's cross-linking with an ideal thickness and proper surface roughness. Notably, the resulting RO membranes exhibited a high salt rejection rate of 96.87 % and an enhanced water flux from 11.80 L m −2 h −1 to 15.78 L m −2 h −1 after the addition of 0.1 wt% SA gel, surpassing that of some previously reported CTA-based RO membranes. More importantly, the hierarchically structured CTA-based RO membrane, which was not readily compatible, presented prominent potential free chlorine resistance with the enhanced water flux of 17.80 L·m −2 h −1 and desirable stability over 700 min. Overall, this study offers a new paradigm for the high-performing CTA-based RO membranes for desalination. Synopsis As for the ‘trade-off’ drawback between salt rejection and water flux, this study provide a new paradigm for hierarchically structured CTA-based RO membranes posing high salt rejection while maintaining an increased water flux, exceeding that of some previously reported CTA-based RO membranes.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Chemistry
·
2020
·Vol. 2020
·期 1
·8758432
·
IF 1.79
Wu Yi-cheng,Yang Ai-li,Gao Wei,Fu Hai-yan,Wang Ze-jie
The roles of Al 2 O 3 nanoparticles on the removal of carbamazepine (CBZ) by Chlorella vulgaris immobilized in sodium alginate gel beads were for the first time investigated. The optimum conditions to prepare immobilized C. vulgaris beads with addition of Al 2 O 3 nanoparticles were determined as follows: C. vulgaris density was 3.0 × 10 6 cells for 1 mL sodium alginate solution, Al 2 O 3 nanoparticle concentration was 0.5 g/L, and concentrations of sodium alginate and CaCl 2 were 1.6% and 1%, respectively. The results showed that the proposed algae beads achieved the highest CBZ removal rate of 89.6% after 4 days of treatment, relative to 68.84%, 48.56%, and 17.76% in sodium alginate-immobilized C. vulgaris , free microalgae, and Al 2 O 3 nanoparticle alginate beads, respectively. The results also showed that the CBZ removal rate increased with more proposed algae beads, while decreased with increased bead diameter. The algae beads exhibited excellent CBZ removal ability even after three recycles. This work provided an economical and effective approach to remove CBZ from water.
研究领域:
环境科学
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水处理
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微生物学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Di Sun,Haichao Yu,Hechen Shen,Yiran Wang,Tianqi Su,Hongbo Guo,Xiong Xing,Weikang Wang,Li Wei,Wenqing Gao,Yi Yao,Bingyu Xiu,Jianing Wang,Xuesong Zhang,Yanchuan Guo
Uncontrollable traumatic bleeding caused by surgery or traffic accidents is an important factor leading to high mortality rates. Therefore, there is an urgent hemostatic materials with fast, effective, and safe to achieve rapid hemostasis. Traditional hemostatic materials have limited effect in deep irregular tissues or massive bleeding scenes, while exocrine hydrogel can break through limitations by quickly stopping bleeding and reducing secondary injury. The gelatin time of an injectable 10 % oxidized sodium alginate-10 % gelatin (OSA-G) hydrogel was 8 s. Platelet-rich plasma exosomes (PRP-Exo) from the autologous biological macromolecule play a crucial role in blood coagulation and hemostasis. The OSA-G hydrogel loaded with PRP-Exo exhibited superior effects on proliferation and angiogenesis in vitro. The APTT and thromboelastography of the OSA-G-EXO group were significantly reduced, indicating the occurrence of intrinsic coagulation pathways and the blood was in a hypercoagulable state and promoting hemostasis. Meanwhile, it has been confirmed in the rat tail-cutting model and the liver bleeding model that the hemostasis time is approximately 30 s, promoting skin healing in the skin wound model. By providing a controlled environment for coagulopathy or anticoagulant-treated patients, it shows a good clinical application prospect.
研究领域:
生物医学工程
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血液学
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创伤医学
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产品关联
DOI
PubMed
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2021
·Vol. 58
·期 5
·342-352
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IF 1.049
Haiyan Gao,Yue Zhou,Jianguo Wang,Hujun Xu
A temperature-sensitive hair dye was prepared with a poloxamer-sodium alginate mixture. When the hair dye was applied to the hair (< 32 °C), it retained its flow dynamics. The hair dye was able to undergo a phase change and formed a solid as soon as it touched the scalp (32°C), which reduced the transdermal amount of p -phenylenediamine (PPD) and also adverse effects and toxicity. Compared to a conventional hair dye, the temperature-sensitive hair dye achieved a reduction of the transdermal amount of p -phenylenediamine by almost 65% at different concentrations. At the same time, the colouring effect was not significantly reduced. The poloxamer alginate hydrogel can be used as a novel colouring material to reduce the harm of the dye intermediate to the human body when colouring hair.
研究领域:
化妆品科学
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毒理学
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材料科学
✓ 已验证
DOI
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Yuyang Zhang,Ting Feng,Xing Ni,Jiaojiao Xia,Hongbo Suo,Lishi Yan,Bin Zou
In this study, Candida rugosa lipase (CRL) was immobilized on the silica carrier SBA-15 by physical adsorption , then mixed with hydrophobically modified sodium alginate and dropped into calcium chloride solution. Finally, the adsorption-embedding immobilized lipase (L-SBA-15-Mgel) was successfully prepared. The conformation of the carrier before and after lipase immobilization were analyzed by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and other characterization techniques. The molecular docking and molecular dynamics simulation of CRL and modifier dodecyl glycidyl ether (DGE) ligand were carried out to analyze the potential influence of modifier on enzyme characteristics. The basic enzymatic properties including the activity, stability and reaction kinetic parameters of the immobilized lipase L-SBA-15-Mgel were studied. L-SBA-15-Mgel showed good storage stability and reusability. After 16 days of storage, the activity retention was 47.85%, and there was still 63.20% of the residual activity after seven cycles of reuse. The immobilized lipase was applied to the efficient synthesis of food flavor ester isoamyl acetate . Under the reaction conditions of 50 °C and 200 rpm, the highest yield of isoamyl acetate catalyzed by L-SBA-15-Mgel was 85.19%.
研究领域:
生物化学
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酶工程
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食品科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jiating Liu,Yi Chen,Jiawei Lu,Ying Chen,Rui Zhou,Jiaxian Qiao,Tian Zhao,Xiaobo Tan,Meng Ding,Wenyong Liu,Rong Cai
Nowadays, many reported oil/water (O/W) emulsion filter materials have issues such as susceptibility to fouling, complex processing, high costs, and environmental unfriendliness. Herein, a novel O/W emulsion separation membrane-like sponge (SA/GO-SL) is prepared in this study by utilizing reshaped waste loofah (LF) as skeleton, the in situ formed sodium alginate (SA) gels as binder, and the graphene oxide (GO) added into the gels as functional component. Reshaped LF provides an enough anti-pressure ability and micron-sized pores structure, which guarantees a water flux of 63.8 Lm −2 h −1 under the 0.25 bar pressure. SA and GO improve the surface roughness and hydrophilicity of the filter sponge comprehensively, so that the sponge exhibits excellent separation capability towards the emulsified oils, with the retention rate of emulsified oil in water up to 99.3 %. Moreover, the sponge exhibits a non-ignorable retention effect on heavy metal ions such as Pb 2+ and Cu 2+ due to the electrostatic adsorption. The excellent separation effect makes this carbohydrate polymer sponge be the potential candidate in water purification field.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Shuangshuang Li,Liyun Zhang,Shuting Tian,Yi He,Xiao Guo
The high oil-adhesion of crude oil results in flux decline. Therefore, the purification of crude oil/water emulsions is an ongoing and arduous challenge. To improve oil stain resistance and reusability, alginate gel and mineralized Cu 3 (PO 4 ) 2 were alternately layer-by-layer self-assembled on a thermally stabilized PAN/PEI nanofibrous membrane. Inspired by a natural formation water purification system, the hydrophilic and antifouling ‘soil-stone’-like hierarchical structures were constructed. The prepared membrane has excellent mechanical properties (Modulus:198.36 MPa) and large specific surface area. In addition, the synergistic effect of the alginate gel layer and mineralized copper phosphate endows the membrane with excellent underwater superhydrophobicity and outstanding anti-oil-fouling properties, so the (Alg/CuP)6-PAN/PEI membrane can effectively separate crude oil-in-water emulsions and other various SDS-stabilized oil-in-water emulsions, with a high separation efficiency of approximately 99.5%. In the continuous test of separating 1000 mL emulsion, the flux and separation efficiency have no obvious attenuation, and the flux recovery rate (FRR) reach up to 98.4%. Furthermore, the modified membrane has good mechanical and chemical stability in environments with ultrasonic waves, salt, solvents, bases and weak acids, showing great promise in the decontamination of actual oily wastewater.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2024
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IF 5.5
Yinhui Zhang,Mengshi Mou,Lin Dong,Hongmei Yu
Background As a dangerous heavy metal element, lead can pose a serious health hazard to living organisms even at very low concentrations. The aim of the present work was to study the Pb 2+ adsorption by surface protonated sodium alginate gel adsorbents (SA/H + gel beads). Methods First, surface protonated sodium alginate gel adsorbents (SA/H + gel beads) were synthesized by a simple two-step method. Secondly, the adsorption properties of the gel material were optimized and determined by batch adsorption experiments. Significant findings The adsorption experiments showed that the limiting adsorption capacity of SA/H + hydrogel beads for Pb 2+ could reach 307.90 mg/g under the conditions of pH=5 and temperature of 298 K. The results of isotherm and kinetic studies showed the Langmuir isotherm and pseudo-second order kinetic model were the best fitted models (R 2 > 0.99), which indicated that the adsorption process was a spontaneous heat absorption process with chemisorption dominated by the monolayer adsorption. In addition, the SA/H + gel beads showed satisfactory results for removal of Pb 2+ from actual water samples, excellent regeneration and the removal rate of Pb 2+ still remained after six “adsorption-desorption-adsorption” cycles close to 96%. Accordingly, the SA/H + gel beads provides a new feasible solution for the adsorption and recovery of Pb 2+ pollutants in wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2011
·
IF 3.463
Xiujuan Huang,Yan Xiao,Meidong Lang
Micelles/sodium-alginate composite gel beads (micelles/SA beads) were constructed from SA matrix and indomethacin (IND) loaded six-arm block copolymer poly( ɛ -caprolactone)- block -(dimethylamino)ethyl methacrylate (S(PCL- b -PDMA) 6 ) micelles. The morphology, swelling property and drug loading level of the beads were investigated. The release behavior of IND from three matrices including micelles, SA beads and micelles/SA beads was evaluated at pH 1.2, 6.8 and 7.4, as well as in the simulated gastrointestinal (GI) tract. Significant differences in the release of IND from each matrix were observed in the acidic and near neutral pH fluids. The results suggested that IND could be protected by the micelles/SA beads from being released under acidic conditions in the stomach and would be mainly delivered to the small intestine and the colon. The release behavior was dependent on the initial concentrations of SA and calcium chloride (CaCl 2 ) due to the different crosslinking densities. The results demonstrated that these micelles/SA beads could represent a promising oral drug delivery system for drugs with poor water solubility.
研究领域:
药剂学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2020
·
IF 7.539
Junfeng Chen,Hanwen Hu,Junhan Yang,Hanhan Xue,Yuping Tian,Keyan Fan,Zhixin Zeng,Jiaqi Yang,Renjun Wang,Yanyan Liu
A novel macro-architectures material Fe 3 O 4 -N-GO@sodium alginate (SA) gel film was successfully produced, which was used to remove series azo dye wastewater. The optimal adsorption rates were attained, which achieved the maximum removal efficiency of 74.22%, 45.72%, 37.75% for Congo Red, Acid Orange 7 and Amino Black 10B respectively, under the condition that the mass ratio of Fe 3 O 4 -N-GO to sodium alginate was 0.11. The optimal adsorption temperature for three dyes was 30 ℃ and the adsorption equilibrium was reached at 150 min. The adsorption kinetic model of Fe 3 O 4 -N-GO@SA for the three azo dyes conformed to the quasi-second-order reaction model, and the adsorption isotherm was more in line with the Freundlich adsorption. The adsorption mechanism was multi-layer heterogeneous adsorption under the combined action of physical adsorption and chemisorption, and chemisorption was the main step of controlling the speed. The study would provide theoretical basis for the application of macro-architectures material in environment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Mingdong Du,Xin Liu,Jian Zhang,Xiangxuan Meng,Shu Zhang,Hengrui Zhang,Shunri Zheng,Qinhua Gu,Wenjuan Han,Ming Lu,Haibo Li,Bingsen Zhang
How to construct a new electrode/electrolyte interface structure in solid-state batteries (SSBs), enhance interface stability, and improve the cycling performance of SSBs is a great challenge for the development of SSBs. Here, an all-in-one “interface-free” structure was developed. This interfacial structure constructs a full-interface hydrogen bonding network through the abundant hydrogen bond donors and acceptors in the cathode and electrolyte to enhance the interfacial stability and avoid interfacial failure during charging and discharging, and generates cathode–electrolyte interface (CEI) in-situ to effectively regulate zinc ion transport. Square cells assembled in this structure are stabilized for 100 cycles at a current density of 0.1 mA cm −2 . This integrated electrode provides a new idea for the long stable cycle of SSBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xingyu Zhan,Zhilong Zhang,Jie Lin,Jingcai Xu,Xinqing Wang,Bo Hong,Yingchun Xia,Yunxiong Zeng
Degradation of ciprofloxacin (CIP) in water by photocatalysis using metal-free carbon nitride (CN) is an effective route. Here, we rationally adopt a “kill two birds with one stone” strategy to prepare N-vacancy (V N ) and O-doping co-modified CN (V N -OCN 2.0 ) by a one-pot sintering process, wherein surface atomic microenvironment is judiciously reconfigured. V N -OCN 2.0 accomplishes 100 % CIP removal within 12 min with a 69.5-fold higher pseudo-first-order kinetic constant than CN. Furthermore, V N -OCN 2.0 generates an ultra-high concentration of reactive oxygen species (ROSs), which is 113.4 times higher than CN. Such excellent activity is attributed to a synergistic effect of V N as electron-rich centers and O-doping as reaction active centers. Simultaneously, V N -OCN 2.0 integrated sodium alginate hydrogel (V N -OCN 2.0 /SAG) can remove 100 % CIP without decay after 20 cycles. In addition, photodegradation pathways and biotoxicity are investigated by HPLC-MS, quantitative mathematical modeling of conformational relationships, and in vitro E. coli culture experiments. This study enriches a precise rearrangement of surface atoms, elucidates its collaborative functions in facilitating the efficient generation of ROSs and profound mineralization of antibiotics, and integrates SAG to tackle engineering challenges related to secondary pollution and intricate recycling of powder catalysts.
研究领域:
环境科学
·
材料科学
·
化学工程
·
光化学
✓ 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）