Gels
·
2024
·Vol. 10
·期 6
·392
·
IF 5
Juan Ye,Yanchun Yang,Li Zhang,Man Li,Yiling Wang,Yuxuan Chen,Ruhui Ling,Jiefeng Yan,Yan Chen,Jinxing Hu,Zhenxing Fang
Fly ash was used as raw material to prepare zeolites through silicate gels, assisted by the hydrothermal method. The silicate gels could be effectively formed in a few minutes in a molten alkali environment. The zeolites could be prepared by using these silicate gels through the hydrothermal method, which realizes the transformation from useless materials to highly valuable materials. The obtained zeolites were applied to the removal of ammonium in water, achieving the highvalue utilization of fly ash. The synthesized zeolites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrum (EDS), thermogravimetric (TG), and Fourier transform infrared (FTIR) spectroscopy. The study on the adsorption and removal of ammonium in water shows that the adsorption of ammonium is more in line with pseudo first-order kinetics, and the adsorption mainly occurs in the first 20 min. The adsorption can reach equilibrium in 30 min, and the maximum adsorption capacity can reach 49.1 mg/g. The adsorption capacity of ammonium has the best performance at pH = 5. Furthermore, within a certain range, an increase in temperature is beneficial for the removal of ammonium.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 32
·2405077
·
IF 14.3
Chenxiao Yin,Jingrui Sun,Chang Cui,Ke-Ke Yang,Ling-Ying Shi,Yiwen Li
Energy and environmental issues have increasingly garnered significant attention for sustainable development. Flexible and shape-stable phase change materials display great potential in regulation of environmental temperature for energy saving and human comfort. Here, inspired by the water absorption behavior of salt-tolerant animals and plants in salinity environment and the Hofmeister theory, highly stable phase change salogels (PCSGs) are fabricated through in situ polymerization of hydrophilic monomers in molten salt hydrates, which can serve multiple functions including thermal management patches, smart windows, and ice blocking coatings. The gelation principles of the polymer in high ion concentration solution are explored through the density functional theory simulation and verified the feasibility of four types of salt hydrates. The high concentration chaotropic ions strongly interacted with polymer chains and promoted the gelation at low polymer concentrations which derive highly-stable and ultra-moisturizing PCSGs with high latent heat (> 200 J g −1 ). The synergistic adhesion and transparency switching abilities accompanied with phase transition enable their smart thermal management. The study resolves the melting leakage and thermal cycling stability of salt hydrates, and open an avenue to fabricate flexible PCM of low cost, high latent heat, and long-term durability for energy-saving, ice-blocking, and thermal management.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Lianming Zhang,Kaiting Li,Junzhe Gong,Dan Li,Zhifan Lin,Jianping Li
To enhance the stability, sensitivity, and selectivity of protein sensors for detecting trace human epididymis protein 4 (HE4), sodium alginate (SA) was employed as a protein carrier in this study. After the gelation of SA, the number of active sites of a protein sensor increased and sensor stability improved, leading to the development of a novel, highly sensitive protein sensor based on the conformation of HE4 immobilized within the SA-gel. The surface of a glassy carbon electrode was modified with SA, where the numerous active sites within SA molecular chains induced and stabilized the spatial conformation of HE4. Under the influence of Ca 2+ , SA contracted to form a gel. Upon the elution of HE4, a three-dimensional cavity structure highly complementary to the spatial conformation of HE4 was formed, resulting in the formation of HE4@SA-gel sensor with excellent selectivity and high sensitivity for HE4. Results demonstrated that changes in the probe molecule signal intensity (Δ i ) were linearly and positively correlated with the logarithm of the HE4 concentration (lg( C , mol/L)) in the range from 1.00 × 10 −13 –3.00 × 10 −9 mol/L, with a limit of detection (LOD) of 2.37 × 10 −14 mol/L (LOD = 3σ/ S ). Comparison results indicated that the prepared HE4@SA-gel sensor exhibited a 12.7-fold increase in sensitivity and an 11.36-fold improvement in selectivity compared with nongelated HE4@SA sensor. When used for detecting HE4 in human serum samples, the prepared HE4@SA-gel sensor achieved a recovery rate of 92.4 %–106.7 %.
研究领域:
生物化学
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医学检测
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2022
·
IF 3.475
Ruobing Yu,Zhicong Wu
Although metal–organic frameworks (MOFs) are advantageous to the removal of organic pollutants, the general MOFs in powder form is disadvantageous to their practical applications. In-situ MOF synthesis in alginate gel is a good way to fabricate an MOF composite for many applications, which is different from blending MOF particles with polymers. In-situ synthesis of Zeolitic Imidazolate Framework-8 (ZIF-8) in alginate gel is in the form of beads with rough wrinkles and has many pores inside. When used as an absorbent, in-situ synthesis of ZIF-8 in alginate gel could remove 97.7 ± 0.9% of ofloxacin from ofloxacin solution and the equilibrium adsorption capacity is up to 160.6 ± 1.3 mg/g. During the adsorption, ofloxacin is first brought into the gel by the solvent exchange and gel microchannel adsorption, and it can then be absorbed by in-situ ZIF-8. Moreover, the adsorption efficiency can reach 85.5% even after four cycles of adsorption. We believe that in-situ synthesis of ZIF-8 in alginate gel will be an appropriate material for the removal of ofloxacin in the 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
PubMed
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 6
·456
·
IF 4.3
Ruixing Ge,Jiaji Wang,Junlong Piao,Zhenghua Pan,Zhehao Zhang,Yating Yang,Jin Huang,Zhiguo Liu
Green-synthesized gel materials can efficiently absorb and remove organic dyes from wastewater. This investigation designed and synthesized a novel modification method of sodium alginate gel beads based on the protein glycosylation reaction (Maillard reaction) using green chemistry principles. The prepared gel beads were subsequently applied to examine their efficacy in adsorbing the organic dye methylene blue. The adsorption process and mechanism were characterized and analyzed. At an adsorption equilibrium of 300 K, the adsorption value can reach 908 mg/g. The dry casein glycosylated gel beads synthesized in this study demonstrate the potential for further development as a novel adsorbent for organic dyes in wastewater.
研究领域:
环境科学
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材料科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Gels
·
2023
·Vol. 9
·期 6
·489
·
IF 4.6
Yunling Ran,Guicai Zhang,Ping Jiang,Haihua Pei
High water cut of produced fluid is one of the most common problems in reservoir development. At present, injecting plugging agents and other profile control and water plugging technologies are the most widely used solutions. With the development of deep oil and gas resources, high-temperature and high-salinity (HTHS) reservoirs are becoming increasingly common. Conventional polymers are prone to hydrolysis and thermal degradation under HTHS conditions, making polymer flooding or polymer-based gels less effective. Phenol–aldehyde crosslinking agent gels can be applied to different reservoirs with a wide range of salinity, but there exist the disadvantage of high cost of gelants. The cost of water-soluble phenolic resin gels is low. Based on the research of former scientists, copolymers consisting of acrylamide (AM) and 2-Acrylamido-2-Methylpropanesulfonic acid (AMPS) and modified water-soluble phenolic resin were used to prepare gels in the paper. The experimental results show that the gelant with 1.0 wt% AM-AMPS copolymer (AMPS content is 47%), 1.0 wt% modified water-soluble phenolic resin and 0.4 wt% thiourea has gelation time of 7.5 h, storage modulus of 18 Pa and no syneresis after aging for 90 days at 105 °C in simulated Tahe water of 22 × 104mg/L salinity. By comprehensively comparing the effectiveness of the gels prepared by a kind of phenolic aldehyde composite crosslinking agent and modified water-soluble phenolic resin, it is found that the gel constructed by the modified water-soluble phenolic resin not only reduces costs, but also has shorter gelation time and higher gel strength. The oil displacement experiment with a visual glass plate model proves that the forming gel has good plugging ability and thus improves the sweep efficiency. The research expands the application range of water-soluble phenolic resin gels, which has an important implication for profile control and water plugging in the HTHS reservoirs.Keywords:low-cost gel;AM-AMPS copolymer;high-temperature and high-salinity resistant gel;oil displacement experiment
研究领域:
石油工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Regenerative Therapy
·
2025
·
IF 3.5
Ying Zhang,Xuebo Wei,Yun Xu,Weidong Xia,ChaoYu Zheng,Hongyu Zhang,Weiting Chen,Ke Xu,Qun Huang
Delayed healing of skin wounds significantly impacts human life, Zinc plays a pivotal role in human growth, the immune system, and various cellular processes. Previous studies have demonstrated that zinc supplementation or topical zinc ion therapy can accelerate wound healing in cases of skin injury. Zinc deficiency has been linked to delayed wound healing, but the role it plays remains to be elucidated. In this study, we report the preparation of zinc sulfate gel to promote wound healing by treating inflammation, antioxidant effects, and angiogenesis. We demonstrated the efficacy of zinc sulfate gel in wound healing in a mouse model of full-thickness skin excision, spared the anti-inflammatory and antioxidant capabilities of zinc ions. Furthermore, Zinc sulfate gel can stimulate tissue to enter the proliferative phase by regulating macrophage polarization, thereby accelerating collagen deposition, granulation tissue formation, and extracellular matrix production and remodeling. In conclusion, zinc ion gel provides a promising strategy for skin wounds regeneration.
研究领域:
生物医学
·
皮肤再生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 11
·6277-6286
·
IF 3.119
Yalin Cheng,Kaiqian Wang,Biyang Tu,Shan Xue,Jiahui Deng,Haisheng Tao
A novel iron-embedded carbon bead was prepared by the calcination of a calcium alginate gel bead mixed with iron nanoparticles coated by polydopamine. The prepared iron-embedded carbon bead was characterized by infrared spectrum analysis, X-ray diffraction, Raman spectroscopy, vibrating sample magnetometry, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. It was discovered that the novel structure efficaciously prevented the agglomeration of iron nanoparticles. Additionally, the effects of dose, pH, exposure time, temperature and initial concentration on the adsorption of Cd(II) were studied, and the reusability of the material was analyzed. Fe/SA-C showed high Cd(II) removal capability (220.3, 225.7, 240.8 mg g−1 at 288, 298, 308 K), easy recoverability and high stability. In addition, some slightly different interpretations of the adsorption mechanism are given. This study clearly revealed that Fe/SA-C has potential application in the removal of Cd(II).
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Yunchao Peng,Yueqi Liu,Zhikun Wang,Shuangqing Sun,Songqing Hu
Directly injected corrosion inhibitors have a short action time and are difficult to penetrate oil wells to protect underground equipment. To solve this, long-lasting gel-loaded corrosion inhibitors have been developed. Two imidazole molecules were loaded into crosslinked alginate gel to prepare solid inhibitor spheres, which were tested in terms of structural feature, responsive release, and corrosion inhibition performance, to pursue the function of long-lasting metal protection effect. The corrosion inhibition efficiencies reach >90% in acidic and neutral environments. The alginate gel release rapidly in 10 h and continuously for 60 h, independent of environment temperature and pH, enabling corrosion inhibitors to protect metallic wellbore over longer distances. The alginate gel minimally impacts the environment but prolongs the lasting time of corrosion inhibitors under oil wells.
研究领域:
材料科学
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腐蚀与防护
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Yalin Lan,Meng Yu,Dongqing He,Yanming Wang,Qing Bo Meng,Hongwei Huang,Yu Zhang,Tianyi Ma,Xi-Ming Song
Pickering emulsion-based photocatalysis is considered to be a promising system due to its large active surface area and water/oil spatial separation capability for enrichment of substrates and products. In this work, a novel hierarchical structure composed of calcium alginate gel sphere wrapped ionic liquid-in-water Pickering emulsion with TiO 2 in the water phase, which are stabilized by graphene oxide, is prepared via a facile one-step emulsion gelation method. Such subtle combination of Pickering emulsion, hydrogel and TiO 2 with a multi-stage solid-liquid assemblage structure shows enhanced degradation activity of 2-naphthol into small molecular alkanes under simulated solar irradiation. The photodegradation activity is attributed to the ionic liquid as adsorption medium for 2-naphthol, and the high-efficient charge separation at graphene oxide/TiO 2 interface superior to that of pure TiO 2 . More importantly, the as-prepared millimeter-sized assembled gel spheres can be directly used as the column filler to construct continuous flow photocatalytic system, maintaining the promising performance in removing pollutants from water with ~100% remove ability of 2-naphthol on stream. A charge transfer mechanism of the photocatalyst is proposed, i.e. photogenerated charges are separated in TiO 2 /graphene oxide p-n heterostructure at the interface of Pickering emulsion droplets.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yifan Liu,Jiazuo Zhou,Yudong Li,Xiaohan Sun,Ziyao Wang,Haiyue Yang,Chengyu Wang
Gels as compelling soft material shows its promising versatility in actuators, soft electronics, and biomedical sensors. However, most gel materials are too rigid to cope with long-term changing scenarios and specific needs. Inspired by the switchable behavior of bio-behavior of muscle, the study reports a thermodynamically controllable and stiffness-transformative cellulose-salt gel by simple thermal mixing of hydrous salt, cellulose nanofiber, and polyacrylamide. The achieved cellulosic gel with dynamic microstructure presents an amazing stiffness switchability between crystalline state and melted states of 32.38 to 0.02 MPa, as well as the regulable light transmittance between 41.59% and 93.43%. In addition, this cellulose-salt gel has excellent thermal controllable behavior. That is, by controlling the crystallization process, the cellulose-salt gel displays the start-stop releasing-energy behaviors on demand. Enabled by these outstanding properties, the study further demonstrates the promising application of cellulose-salt gel in controllable soft-rigid coupling thermoelectric device, showing the broader implications for wearable electronics aiming at on-demand work.
研究领域:
材料科学
·
软体机器人
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2012
·
IF 0
Hai Feng Chen,Ting Yan
New nano nickel-doped titanium dioxide composites had been produced by a conducting sol-gel method. The alginate gel was used as a template to prevent the conglomeration of the inorganic materials. In this experiment, nickel nitrate, tetrabutyl titanate and sodium alginate were used as main materials to prepare different amount nickel-doped TiO2 particles. The amount of Ni was studied from 0 to 9 mol.-% (where mol.-% refers to the Ni/TiO2 molar ratio), and the Ni/TiO2 composites were characterized by XRD, FT-IR, TG-DTA, and we carried out doping amount, catalyst amount and illumination time influence on photocatalytic performance of nano Ni/TiO2 composite in aqueous methyl orange. The activity of TiO2 gradually increased with the increasing of doping amount, and there was highest catalytic efficiency when Ni = 9 % mol.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
危险品化学品经营许可证（带存储）