MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Wanli Zhao,Yuanhui Long,Yunqing He,Jiabing Cai,Mingxian Liu
Highly stretchable hydrogel shows great potential for wearable strain sensors. However, the rapid propagation of bacteria while using wearable sensors may threaten health. In this work, HNTs@HKUST-1 composites were prepared by the incorporation of halloysite nanotubes (HNTs) during the synthesis of HKUST-1. HNTs depressed the crystal growth of the HKUST-1, which leads to the 2D nanosheet morphology. HNTs@HKUST-1 serves as a reinforcing agent for polyacrylamide (PAAm) hydrogels, and PAAm-HNTs@HKUST-1 has high tensile strain properties (elongation at break of 912.5% and tensile strength of 22.4 kPa). The Cu 2+ in HKUST-1 endows remarkable conductivity and excellent antibacterial properties to the composite. The composite hydrogels were then developed as human motion detection sensors with antibacterial property to prevent microbial infection, which show recyclability, high sensitivity, and fast responsiveness. So, they have great potential as flexible antibacterial materials to monitor movements of the human body in real-time.
研究领域:
材料科学
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生物医学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 34
·16541-16553
·
IF 4.682
Zhang Binghong,Ma Aijie,Li Jiaoyang,Xiao Siyu,Li Chunmei,Zhao Weifeng,Zhang Gai,Zhang Hongli
An efficient and economical strategy for rapid microencapsulation of 1-butylimidazole (1-BMI) was developed. The strategy is based on the thiol-yne click reaction of trimethylolpropane tris(3-mercaptopropionate) and 1,7-octadiyne in oil-in-water emulsion. The thiol-yne click reaction is not only green and efficient, but also improves the cross-linking density of shell. Thus, the obtained shell prevents the leakage of curing agent and prolongs the storage period of EP/MCs system. The whole process of preparing 1BMI-MCs only took 40 min. Moreover, the effects of stirring speed and the ratio of 1BMI on the size and core content of microcapsules (MCs) were investigated. Results demonstrated that the optimal particle size was about 10.8 μm, and the maximum content of 1BMI in MCs was 33% corresponding to 60% 1BMI in oil phase. Afterward, the 1BMI MCs were used as latent curing agent (LCA) for epoxy resin (EP). In the curing reaction of the epoxy resin, the 1BMI-MCs exhibited a delayed kinetic behavior compared to pure 1BMI. Furthermore, the E-51/MCs system had a storage term of 16 weeks. The shell material not only had no effect on curing effect of E-51, but also toughen the cured EP systems. This paper provided a promising method for long-term storage of LCA.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
FUEL
·
2018
·
IF 4.908
Qing-Qing Teng,Xian-Yong Wei,Yi-Bing Sun,Sheng-Kang Wang,Jing-Hui Lv,Zhan-Ku Li,Zhong-Qiu Liu,Zhi-Min Zong
Catalysts trifloromethanesulfonic acid (TFMSA)/treated attapulgite powder (TAP), Ni/TAP, and Ni-TFMSA/TAP with different Ni and TFMSA loadings were prepared. The typical catalysts were characterized with multiple instruments and used for catalyzing hydroconversion of di(1-naphthyl)methane (DNM), which was used as a coal-related model compound. The suitable loadings of Ni and TFMSA in Ni-TFMSA/TAP were determined to be 28.6% of Ni and 33% of TFMSA. Under optimal reaction conditions of 5 MPa of initial hydrogen pressure, 240 °C, and 4 h over Ni-TFMSA/TAP, DNM was completely converted, producing decalin and 1-methyldecalin as the main products. The result suggests that Ni-TFMSA/TAP is highly active for both cleaving the C ar -C alk bond in DNM and hydrogenating the resulting naphthalene and 1-methylnaphthalene under mild conditions. Based on the identification of reaction products, the catalytic mechanism for DNM hydroconversion was discussed.
研究领域:
催化化学
·
能源化学
✓ 已验证
DOI
高影响因子
RADIOCHIMICA ACTA
·
2022
·Vol. 111
·期 1
·63-71
·
IF 2.083
Peng Liu,Zhuang Shen,Jiaxian Cheng,Zhen Han,Wenda Xu,Mingbo Ji,Fuqiu Ma
Due to the relative abundance, long half-life and high mobility of radioactive cesium (Cs), new adsorbents are urgently needed to treat Cs to ensure public health. In this study, a graphene oxide (GO) based adsorbent for Cs(I) adsorption was prepared by 1-aza-18-crown-6 ether modification. XRD, FT-IR, XPS and SEM results showed that the properties of 1-aza-18-crown 6 ether modified GO (18C6-GO) changed dramatically compared with that of raw graphite. The adsorption properties of 18C6-GO for Cs(I) were studied by batch static adsorption experiments. The results showed that the adsorption equilibrium time of 18C6-GO was 20 h. Kinetic study revealed that the adsorption rate of Cs(I) conformed to pseudo-second-order kinetic model. Langmuir adsorption isotherm simulation indicated that the adsorption arises at homogeneous adsorption sites on 18C6-GO. Therefore, crown ether modified GO may have implications for the treatment of wastewater.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
CATALYSIS TODAY
·
2019
·
IF 4.888
Hongxia Chen,Runduo Zhang,Wenjing Bao,Hao Wang,Zhoujun Wang,Ying Wei
The catalytic removal of HCHO with low noble-metal loading at room temperature is meaningful and challenging work. Herein, high performance catalysts x Pt/TS-1 (Si/Ti = 30, x = 0.1, 0.3, and 0.6 wt%) for HCHO oxidation were synthesized by polyvinyl alcohol-protected NaBH 4 reduction method. The Pt/TS-1 sample loading with 0.3 wt% Pt nanoparticles (NPs) could completely remove 120 ppm HCHO at space velocity (SV) of 60,000 mL/(g h) at 20 °C. Moreover, the 0.3Pt/TS-1 sample remained outstanding activity and stability in humid air with 35–75% water vapor and at high SV with a range between 60,000 and 240,000 mL/(g h). Based on the results of UV–vis, Raman, NH 3 -TPD, Contact angle measurement, CO chemisorption , and O 2 -TPD, the excellent catalytic performance of Pt/TS-1 was mostly attributed to high Pt dispersion and high concentration of adsorbed oxygen species. This work expands the field of utilization of zeolite supported noble-metal catalysts for the purification of indoor pollutants.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Xingguo Zhou,Hanghang Liu,Yanhui Zheng,Yaobao Han,Tingting Wang,Hao Zhang,Qiao Sun,Zhen Li
Radiotherapy has been extensively used to treat cancer patients because it can effectively damage most solid tumors without penetration limits. A hypoxic microenvironment in solid tumors leads to severe radioresistance and expression of hypoxic inducible factor-1 (HIF-1), which results in poor efficacy of radiotherapy alone. Herein, we report the excellent efficacy of radiotherapy achieved using a new type of yolk–shell Cu2–xSe@PtSe (CSP) nanosensitizer functionalized with the HIF-1α inhibitor acriflavine (ACF). We prepare the CSP nanosensitizer through the interfacial redox reactions between chloroplatinic acid and Cu2–xSe nanoparticles (CS) and then functionalize the nanosensitizer with ACF through their electrostatic interactions. We show that the synthesized CSP nanosensitizer can arrest the cell cycle (i.e., at the gap 2/mitosis (G2/M) phases) of tumor cells to enhance their sensitivity to X-rays and decompose endogenous H2O2 into O2 to reduce hypoxia and increase the production of reactive oxygen species, which leads to severe damage to DNA double strands and apoptosis of tumor cells. We also show that the ACF on the surface of CSP nanoparticles can effectively reduce the expression of HIF-1α. All these effects lead to a low vascular endothelial growth factor, low density of microvessels in tumor, decreased cell proliferation, and increased cell apoptosis, which synergistically and drastically enhance the efficacy of radiotherapy. This work provides insights and guidance for developing novel nanosensitizers to enhance the efficacy of radiotherapy.
研究领域:
肿瘤学
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纳米医学
·
放射生物学
✓ 已验证
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2025
·
IF 6.3
Yunxiang Du,Zhuoyue Lan,Wanting Yang,Xiong Li,Yunchuan Li,Hang Li,Zhiyu Pu,Letian Hu
Background Conventional chalcopyrite depressants face environmental and selectivity challenges in copper-molybdenum separation. This study introduces 1-thioglycerol (1-TG), an eco-friendly organic depressant, demonstrating exceptional selectivity for chalcopyrite. Methods The depression performance of 1-TG was evaluated through flotation experiments. Its selective adsorption mechanism was elucidated using surface characterization techniques, including contact angle, SEM-EDS, LEIS, FTIR, XPS and molecular dynamics simulations. Significant findings 1-TG achieved efficient separation of molybdenite from chalcopyrite. For the synthetic mixed ore at pH 5 with 25 mg/L 1-TG, recoveries of Cu and Mo were 6.01% and 89.53%. Mechanistic studies demonstrated that 1-TG selectively chemisorbs on chalcopyrite surfaces through coordinating with metal sites, effectively masking adsorption sites and reducing surface hydrophobicity. The -SH groups in 1-TG promoted selective adsorption, as confirmed by surface analyses. This non-toxic depressant functions effectively at low dosages, offering a sustainable alternative to conventional toxic inhibitors like cyanides. The findings provide fundamental insights into green reagent design and advance eco-friendly strategies for sulfide mineral separation, addressing critical environmental and efficiency challenges in copper-molybdenum processing.
研究领域:
矿物加工工程
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资源与环境科学
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表面化学
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冶金工程
·
可持续技术
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Guojun Lv,Tao Wang,Yan Chen,Jiangzhang Wang,Xuyang Zou,Jun Lu,Fumin Wang,Xubin Zhang,Yi Zhai
Design of catalyst particles bearing excellent diffusion performance and suitable surface wettability is of great importance to the successful application of Pickering interfacial catalysis. In this study, selective oxidation reactions over hydrophobized hollow TS-1 zeolite were applied as probe reactions to investigate the influence of catalyst diffusion performance closely related to mesopore size on its catalytic activity. Hydrophobized hollow TS-1 zeolite particles were prepared via a post desilication treatment accompanied with precrystallization treatment. The synthesized hydrophobized hollow TS-1 zeolite was characterized by Scanning electron microscopy, Transmission electron microscopy , X-ray diffraction, UV–vis absorption spectrometry , Fourier-transform infrared spectroscopy and Nitrogen adsorption-desorption. Stable Pickering emulsions including 1-hexene-hydrogen peroxide, cyclohexene-hydrogen peroxide and cyclohexanone-water were prepared with hydrophobized hollow TS-1 zeolite particles as emulsifier . HTS-1–393(2)-S zeolite synthesized with precrystallization at 393 K for 2 h presented the maximum values of 43.9 mol/(Ti-mol·h) for 1-hexene epoxidation , 15.7 mol/(Ti-mol·h) for cyclohexene epoxidation and 247.3 mol/(Ti-mol·h) for cyclohexanone ammoximation. In addition, HTS-1–393(2)-S zeolite particles displayed good reusability for more than five cycles.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 17
·3929-3940
·
IF 7
Lei Fang,Yingjie Chen,Wei Shan,Tiankun Hui,Mokni Ilham,Jie Wu,Chuanli Zhou,Liangmin Yu,Meng Qiu
The drug resistance of bacteria seriously reduces the recovery rate of general disease and endangers human health. Consequently, it is urgent to investigate a non-antibiotic antibacterial material. Recently, two-dimensional MXene has shown good antibacterial properties and received extensive attention due to the large number of active sites, extremely high thermal conversion efficiency, excellent cytocompatibility and ability to penetrate pellicula. However, the antibacterial activity of Ti3C2Tx is greatly affected by the morphology and concentration. Herein, an organic–inorganic hybrid of HKUST-1@Ti3C2Tx with high specific surface area and photothermal effect was designed and fabricated. By adjusting the content of Cu(CO2CH3)2·H2O and 1,3,5-benzenetricarboxylic acid, the photothermal properties of the material can be adjusted, and the release of Cu2+ can be easily reduced. The morphological characterization and fluorescent staining of bacteria which were co-incubated with HKUST-1@Ti3C2Tx confirmed that Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) had adhered to the material. NIR irradiation has enabled induced hyperthermia and the release of Cu2+ ions, causing the disruption of the bacterial membrane, resulting in cytoplasmic leakage. Furthermore, HKUST-1@Ti3C2Tx with synergistic antibacterial effect not only exhibits an excellent bactericidal rate (over 99%) but also greatly improves cytocompatibility with the reduction of the Cu2+ ion release. Therefore, organic–inorganic composites have potential for synergistic effects and non-antibiotic antibacterial activity.
研究领域:
材料科学
·
微生物学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 2
·期 6
·1795-1801
·
IF 0
Ling Li,Xiao Lan Liu,Ming Gao,Wei Hong,Gui Zhen Liu,Lu Fan,Bin Hu,Qing Hua Xia,Li Liu,Gong Wu Song,Zu Shun Xu
The adsorption processes of methylene blue from aqueous solution on Fe3O4/HKUST-1 and Fe3O4/HKUST-1/GO composites were compared. The addition of GO has greatly decreased the surface area and pore volume, led to smaller pore size, and enhanced the adsorption capacity of Fe3O4/HKUST-1/GO. The different interesting phenomena and the effect of GO were analyzed. The high adsorption capacity, excellent reusability and stability make Fe3O4/HKUST-1/GO attractive for the removal of MB from aqueous solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Bolun Mei,Xin Fang,Yi Yu,Yicun Xing,Li Xu,Guoji Liu
The solid–liquid equilibrium data of 1-nitronaphthalene in twelve pure solvents (methanol, ethanol, n -propanol, i-propanol, n -butanol, i-butanol, acetone, acetonitrile, dichloromethane, methyl acetate, ethyl acetate and cyclohexane) were systematically determined by isothermal saturation method in the temperatures ranging from 273.15 K to 308.15 K under atmospheric pressure (0.1 MPa). Molecular electrostatic potential surface and Hirshfeld surface analysis were applied to obtain the visual analysis of crystal structure and the overall charge distribution. The effect of solvent multiple physicochemical factors including polarity, hydrogen bond donor, hydrogen bond acceptor and cohesive energy density of solvent was explored to the solubility behavior. Then the experimental solubility data were correlated by the modified Apelblat equation, λ h equation, Van't Hoff equation and Wilson model, the ARD% was used to check the accuracy of the four equations and the modified Apelblat showed the best fitting. Furthermore, the mixing thermodynamic properties were calculated based on Wilson model, which indicates the dissolution of 1-nitronaphthalene is a spontaneous, endothermic and entropy-driving process. Finally, molecular dynamic simulations were employed to further analyze the dissolution behavior from solute-solvent interaction perspective.
研究领域:
化学工程
·
物理化学
·
计算化学
✓ 已验证
DOI
高影响因子
VETERINARY MICROBIOLOGY
·
2022
·
IF 3.246
Hongyan Luo,Mengru Li,Zhishuang Yang,Dekang Zhu,Pei Li
A novel chromosomally-located β-lactamase gene, bla RASA-1 , was identified in Riemerella anatipestifer RA-CH-1. The RASA-1, encoded by bla RASA-1 , was a class A extended-spectrum β-lactamase (ESBL), which shared 42.7% and 40.5% identities with the RAA-1 and CGA-1 β-lactamase, respectively. Overexpression of RASA-1 in Escherichia coli confers broad resistance to β-lactams and the purified native RASA-1 revealed ESBL-like hydrolysis activity. Blasting in GenBank showed that bla RASA-1 was exclusively detected in Riemerella anatipestifer . Moreover, sequence analysis revealed that this gene was located within the multi-resistance region of Riemerella anatipestifer genome.
研究领域:
微生物学
·
抗药性研究
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）