Journal of Inorganic and Organometallic Polymers and Materials
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2020
·Vol. 30
·期 9
·3378-3387
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IF 1.941
Ai Cuiling,Wu Xuefang,Ke Yuting,Lei Yingjie,Shao Xiangwen
The photocatalyst sorbic acid (SA)/titanium dioxide (TiO 2 ) was successfully synthesized by sol–gel method and characterized. The composite exhibited regularly spherical particles with the size of 50 nm and the specific surface area of 90.3 m 2 g −1 , furthermore, it showed mesoporous structure and significantly improved dispersion. SA was grafted on TiO 2 surface by –COOTi and TiO 2 existed as pure anatase phase in the composite. The addition of SA made the band gap of TiO 2 increased from 3.03 to 3.35 eV, which indicting that the composite exhibited a strong response to the ultraviolet light. The optimum preparation parameters of the catalyst were as follows: n(Ti):n(SA) = 1:0.05, ethanol 60 mL, glacial acetic acid 40 mL, hydrothermal temperature 180 °C, hydrothermal time 12 h. The composite could reach the 4.31 log reduction of E. coli , with the optimum catalyst dosage of 0.7 g L −1 , irradiated by UV light for 60 min. SA/TiO 2 was an environmentally friendly, non-toxic and safe sterilized nanocomposite material appropriate for future bactericidal applications, providing a new way to effectively increase the dispersion of TiO 2 particles to achieve superior photocatalytic sterilization efficiency.
研究领域:
材料科学
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环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER ENGINEERING
·
2020
·Vol. 41
·期 1
·65-71
·
IF 1.126
Zhengdong Fei,Dong Zheng,Ping Fan,Feng Chen,Mingqiang Zhong
A triple interpenetrating polymer network (IPN) with dual responses to temperature and pH was constructed based on chemical crosslinking and electrostatic interaction. In this IPN, CaCO 3 microspheres were used as the kernel and PNIPAAM/sodium alginate microcapsules were prepared by the inverse emulsion polymerization method. Research results demonstrated that CaCO 3 kernels were decomposed into Ca 2+ and CO 2 at pH 1.2. Such decomposition facilitated the formation of triple IPN of Ca 2+ crosslinking. Moreover, microcapsules were expanded by tension of CO 2 and the volume increased to 3.55 × 10 5 times that of the original microcapsules, with capsules remaining an intact morphology. These microcapsules loading doxorubicin hydrochloride (DOX) stability and responses to environment were investigated. No drug overflow was observed at pH 7.4, indicating the high stability of microcapsules. However, DOX was released gradually in the simulated human stomach acid with a weak solution of hydrochloric acid (pH 1.2, 37 °C). This showed that the prepared microcapsules were feasible for drug-loaded capsules and the controlled drug release behavior could relieve side effects of drugs to human body. Moreover, it will help to increase the drug utilization and realize accurate treatment.
研究领域:
材料科学
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药学
✓ 已验证
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2021
·Vol. 47
·期 6
·2331-2338
·
IF 2.914
Gong Jianqiu,He Chun,Zhang Jinlong,Wang Lingzhi
Photocatalytic treatment of water pollutants has attracted extensive attention due to its low energy consumption, low cost and the avoidance of secondary environmental pollution. However, most photocatalysts are in powder form, which makes it difficult to separate from the water system after the reaction. Especially in practical applications, the recycling of the catalyst is an important part. Based on the characteristics that sodium alginate (SA) is easy to form gels under mild conditions, GO-P25@SA gel beads were prepared. The catalyst can be separated from the water system by simple filtration, which greatly saves the recycle cost. Besides, the light response of TiO 2 (P25) and excellent conductivity of graphene oxide (GO) make GO-P25@SA have excellent photocatalytic degradation and cyclic stability for rhodamine B (RhB). In this work, the unique merits of GO and sodium alginate (SA) in developing functionalized photocatalyst were demonstrated, providing a low-cost and easy recycle treatment strategy for rhodamine B degradation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2020
·
IF 2.69
Mengjie Xu,Miao Qin,Xiumei Zhang,Xiaoyu Zhang,Jingxuan Li,Yinchun Hu,Weiyi Chen,Di Huang
In the present work, a new kind of porous polyvinyl alcohol/sodium alginate/hydroxyapatite (PVA/SA/HA) composite hydrogels with tunable structure and mechanical properties have been fabricated by dual-crosslinking method. The morphologies, moisture content, porosity and mechanical properties of the composite hydrogels have been investigated in detail. The PVA/SA/HA hydrogels present uniform, interpenetrating porous structure. The FTIR and XRD results indicate that PVA, SA and HA could be uniformly compounded. The mechanical properties, moisture content and porosity of the samples could be controlled by changing the mass ratio of PVA/SA/HA. The optimized compression modulus (41.74 ± 7.86 kPa), moisture content (86.99 ± 0.72%) and porosity (79.98 ± 1.61%) of the composite hydrogels could be achieved via fixing the weight ratio of PVA/SA/HA at 42:18:40. In vitro biodegradation and mineralization of the composite hydrogels show that the hydrogels could gradually be degraded in PBS solution and sheet-like HA nanocrystals are easily formed on the surface. Moreover, cell culture results indicate that the PVA/SA/HA hydrogels have no negative effects on MC3T3-E1 cell growth and proliferation. Alkaline phosphatase (ALP) activity expressions demonstrate that the nano-HA crystals incorporated composite hydrogels obviously improve the ALP activity of the cells. It confirms that the prepared PVA/SA/HA hydrogels could be a promising candidate for bone repair and bone tissue engineering.
研究领域:
生物材料学
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组织工程学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Lizhen Guo,Yuqi Wang,Meng Wang,Hiba Shaghaleh,Yousef Alhaj Hamoud,Xu Xu,He Liu
With the severe shortage of water resources and the low utilization efficiency of fertilizer, slow-release fertilizer equipped with water-absorbing and water-retaining capacity has captured much attention. Herein, by integrating metal-organic frameworks (MOFs) with cellulose nanofibres (CNFs) and sodium alginate (SA), a novel cellulose-based hydrogel (MIL-100(Fe)@CNF-SA) was fabricated that acted as a carrier for urea. The resultant hydrogel was not only qualified with a high surface area of 129.17 m 2 /g but also affluent in the hydrophilic groups . In parallel with the good water-holding capacity of 55% when the loading of the resultant hydrogel was only 0.5 g, the complete loss of the water in the treated soil was successfully slowed down by nearly 20 d compared with the soil without treatment. Urea (1.47 g/g) could be captured in the composite hydrogel , wherein the slow release of urea was achieved due to the synergism of the highly porous structure of the hydrogel and the crystals with a high specific surface area. Moreover, the positive effect of the resultant hydrogel on the growth of wheat was indexed to the germination rate, number of tillers, photosynthetic rate and chlorophyll content of the crop, which verified their further application in irrigating farming.
研究领域:
材料科学
·
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Environmental Technology & Innovation
·
2021
·
IF 5.263
Yansong Zhang,Zehai Yu,Yunshuang Hu,Caifeng Song,Fuwei Li,Wen He,Xiaofeng Wang,Zhixia Li,Hongfei Lin
Magnetic polyvinyl alcohol–sodium alginate–diatomite (PVA–SA-diatomite) composite carriers for immobilized microorganisms were prepared for removal of NH 4 + -N from effluents. The mass transfer efficiency, chemical stability, and NH 4 + -N removal efficiency of the carriers were investigated. The amount of each ingredient added significantly affected the performance of the carriers. The optimal concentrations of PVA, SA, diatomite , and Fe 3 O 4 were 10%, 1%, 1%, and 2%, respectively. The obtained carrier achieved a NH 4 + -N removal efficiency of 72.5% after reaction for 12 h, which was 31.8% higher than that with the non-magnetic carrier. The removal of NH 4 + -N was attributed to the cooperative action among non-magnetic ingredients, magnetic ingredients, and microorganisms. The adsorptions of NH 4 + -N by non-magnetic ingredients and Fe 3 O 4 contributed 21.2% and 25.5%, respectively, and microorganism metabolism contributed 53.2% to NH 4 + -N removal. The novel texture structure of the carrier leads to improved mass transfer of nutrients and stable activity of microorganisms. Nitrification followed the first-order reaction for low concentration of effluents and zero-order reaction for high concentration of effluents. The reaction rate increased with increasing initial NH 4 + -N concentration. The magnetic carrier was applicable for a long time. These results show the great potential of the developed carrier for industrial applications.
研究领域:
环境工程
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水处理
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
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2021
·
IF 3.575
Hongjie Wen,Zhong Chen,Yi Cui,Yongqing Xu
Osteomyelitis is one of the most challenging diseases in the field of orthopedics for its complex pathogenesis and unsatisfactory treatment. The mechanism underlying its occurrence and development is still unclear. In our previous study, we found that long non-coding RNA (lncRNA) NONHSAT009968 inhibited the ability of osteogenic differentiation in staphylococcal protein A (SPA)-treated human bone marrow mesenchymal stem cells (hBMMSCs), but the underlying mechanism remains unclear. The current study was aimed at elucidating the possible mechanism of NONHSAT009968 in regulating osteogenic differentiation and bone defect repairability of hBMMSCs under infection. It was revealed that Wnt3a played a key role in promoting osteogenic differentiation of hBMMSCs treated with SPA in vitro. In addition, NONHSAT009968 inhibited osteogenic differentiation of hBMMSCs treated with SPA via Wnt3a, both in vivo and in vitro. In sum, the results suggested that lncNONHSAT009968 inhibited osteogenic differentiation of hBMMSCs in SA-induced inflammation through Wnt3a, which may have affected the occurrence and development of osteomyelitis. This study might provide novel insights regarding osteomyelitis and infectious bone defects.
研究领域:
骨科
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分子生物学
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干细胞研究
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炎症
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Zhixiang Xu,Dongshan Chen,Xingyu Duan,Yuning Chen,Caiqing Li,Siyuan Li,Yitao Ma,Bin Huang,Xuejun Pan
Dissolved inorganic and organic phosphorus is a major factor in triggering the eutrophication of water bodies. At present, a novel Zr 4+ cross-linked sodium alginate encapsulated in Ce-UIO-66 microspheres (Zr-SA/Ce-UIO-66) was prepared and systematically characterized. Its ability for capture of phosphate and glyphosate in their single and binary systems has been investigated comprehensively. Results showed that Zr-SA/Ce-UIO-66 exhibits excellent phosphate adsorption, achieving 92 % removal and a maximum adsorption capacity of 125 mg P/g at 313 K. Diversified mechanisms, including electrostatic attraction, ligand exchange and hydrogen bonding, have cooperatively participated in phosphate removal. Interestingly, in phosphate and glyphosate mixed solutions, the presence of phosphate significantly enhanced the removal of glyphosate for the formation of complexes between phosphate ions and the adsorbent. And that was similar to the presence of glyphosate in phosphate adsorption. Simulated wastewater experiments demonstrated the adsorbent’s practical application in water contaminated with both organic phosphorus and glyphosate composites and its potential for recycling and reuse.
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 APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 33
·
IF 1.866
Xin Tang,Bin Yuan,Yuanguang Yang,Yingquan Xie
A new water-soluble polymer was prepared and evaluated as a filtrate reducer for oil well cementing. The filtrate reducer (WSP) was synthesized from 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylic acid (AA), dimethyl acrylamide (DMAA), and sodium allylsulfonate (SA) by aqueous free radical polymerization. The synthesis conditions were optimized by orthogonal experiment. The molecule structure of the synthesized copolymer (WSP) was verified by Fourier transformer infrared spectrum (FTIR) and nuclear magnetic resonance hydrogen spectroscopy ( 1 H-NMR). The molecule weight of the synthesized copolymer was determined by gel permeation chromatography (GPC). The thermal stability of the synthesized copolymer was tested by thermogravimetry and differential thermogravimetry (TG and DTG). When the dosage of WSP is up to 3% in fresh water cement slurry, the FL API can be controlled within 58 mL. In 37% salt water cement slurry, the FL API can be controlled within 90 mL when the dosage of WSP is 5%. The thermal degradation of WSP is not obvious before 289 °C. Compared with a commercial filtrate reducer BS-100L and a reported copolymer HTF200C, the WSP has better performance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43824.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2019
·
IF 6.277
Hong Miao,Jun Yang,Guilong Peng,Huiquan Li,Yongfa Zhu
A self-assembled perylene diimide (SA-PDI) film was prepared on an indium-tin-oxide (ITO) substrate and acted as a photoanode for the photoelectrocatalytic (PEC) degradation of some emerging contaminants under visible light irradiation ( λ > 420 nm) and applied voltage. Due to the synergistic effect, the photocatalytic degradation rate by the SA-PDI film under visible light irradiation and an applied voltage of 2.1 V was 2.72 times and 14.5 times those of the PC and EC processes, respectively. The visible light irradiation not only generated a promoting effect on electrocatalytic (EC) oxidation at potentials above 1.2 V but also generated many more h + for promoting the electrocatalytic oxidation of phenol. Furthermore, an applied voltage above 1.2 V could effectively improve the separation rate of electrons from the SA-PDI electrodes to the Pt electrodes, and then, much more O 2 − and OH could be generated for improving the photocatalytic (PC) oxidation efficiency. Therefore, the h + , OH and O 2 − could improve the synergistic effect of phenol oxidation during the PEC process. Moreover, the SA-PDI film appeared to have satisfactory stability in the PEC process. The SA-PDI film was also proven to be effective for two other contaminants, namely, 2,4-dichlorophenol, and ciprofloxacin.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Jie Zhao,Bingzhang Li,Zongyang Liu,Danling Dai,Yuqi Li,Ronghui Shi,Hui Zhang
Sodium alginate (SA) aerogels have shown outstanding potential as regenerative adsorbent materials in the field of wastewater purification. Although SA aerogel adsorption has been demonstrated as a simple and resultful method for removing dyes, it has the limitation that it only transfers or concentrates dyes on the adsorbate, and does not actually degrade them. In this study, a three-dimensional (3D) MIL-125/g-C 3 N 4 /SA (CNTi-125@SA) composite aerogel with visible light photocatalytic activity was achieved for photocatalytic degradation of organic dyes, via in-situ growth, blending and freeze-drying strategy. The results demonstrate that CNTi-125@SA has high catalytic activity for the dyes rhodamine B (RhB), methylene blue (MB) and methyl orange (MO), and the degradation rate can reach up to 99.23%. Impressively, the composite aerogel exhibits excellent antibacterial ability, and the antibacterial rate can reach up to 100% against E. coli . In addition, the developed composite aerogel has excellent reusability and stability, and the degradation efficiency can still reach 85% after seven repeated tests. Owing to their high catalytic activity, excellent antibacterial properties and stability, the CNTi-125@SA composite aerogel can be potentially used in a wide range of dye wastewater purification.
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
CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 4
Xu Nan,Qiu Guo-Fang,Jin Li-Ping,Ji Chen-Peng,Gu Cong-Ke,He Ling-Xin,Guo Wen-Wen
In this study, a novel CS@SA@ZIF-67 core-shell nano-hybrid was synthesized using zeolitic imidazole framework-67 (ZIF-67) as a template and CS@SA@ZIF-67 as a modifier. Then, flame-retardant nanocomposites (EP/CS@SA@ZIF-67) were obtained by combining the hybrid with epoxy resins. The microstructure and morphology of CS@SA@ZIF-67 and the residual chars were explored using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD), and the effect of the obtained hybrid materials on the fire performance of the epoxy resins was characterized. Compared with the flame retardant system composed of ZIF-67 and pure EP, the hybrid flame retardant composites exhibited low total heat release and smoke production. The thermogravimetric analysis (TGA) results showed that the maximum thermal decomposition temperature of the EP/CS@SA@ZIF-67 based composite coating was stabilized at the highest value (378.2 and 563.9 °C) so that the introduction of CS@SA@ZIF-67 could improve the thermal properties of the EP/CS@SA@ZIF-67 composites to a certain extent. Meanwhile, the cone test results indicated that the peak heat release rate pHRR of the CS@SA@ZIF-67 filled EP composite was reduced by 18.43% compared to that of pure EP, implying enhanced flame retardancy. The enhanced thermal stability and flame retardancy of the CS@SA@ZIF-67 composites were mainly ascribed to the catalytic effect and carbonization ability of CS@SA@ZIF-67.
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
危险品化学品经营许可证（带存储）