Small
·
2019
·Vol. 15
·期 52
·1905451
·
IF 10.856
Lijun Ji,Mindong Gong,Tong Xu,Jun Gu,Xu Jiang,Taotao Liang,Yu Chen,Qingren Liu
The interactions of ions and molecules with material surface are highly dependent on the surface properties of the material. Therefore, the distribution of ions or molecules near the material surface may be affected by the surface properties. This phenomenon can be significant enough for controlling the structure of a material synthesized in the sub-micrometer scale confinement space of a template. This work confirms that inverse opals are perfect templates for offering confinement space, while their different surface properties can strongly affect ion and block copolymer distribution in the confinement space. This surface effect principle can be used for the controlled synthesis of colloids with complex composition. As an example, four kinds of mesoporous magnetic bioactive glass colloids with ordered mesopores, core–shell structure, open surface pores, or disordered mesopores are prepared by using polystyrene and carbon inverse opal templates. This work reveals that inverse opal templates possess great advantage in controlled synthesizing colloidal structures due to their surface effect on ions and molecules and confinement space.
研究领域:
生物材料学
·
纳米医学
·
组织工程
·
药物递送
·
生物矿化
·
胶体化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 62
·57009-57012
·
IF 3.289
Di Wu,Jing Ye,Lie Chen,Yongzheng Wang,Kai Fang,Mingjiang Xie,Luming Peng,Xuefeng Guo,Weiping Ding
Crystalline mesoporous γ-Fe2O3 with a high surface area was prepared by a novel solvent-free route. This material exhibits a high reversible capacity with superior cycle performance and an exceptional high-rate capability as an anode material for Li-ion batteries.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
固体化学
·
电池技术
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Jing Guo,Shanhui Zhu,Youliang Cen,Zhangfeng Qin,Jianguo Wang,Weibin Fan
A series of ordered mesoporous Nb x W (8 − x) oxides with tunable Nb/W ratio were successfully synthesized by evaporation-induced self-assembly method. The mesoporous structure, morphologies, surface chemical state, and acidic properties of these catalysts were fully characterized by low-temperature sorption of N 2 , small-angle and wide-angle XRD, TEM, Raman, XPS, and Py-IR. It was shown that the Nb x W (8 − x) oxides created large amounts of Lewis as well as Brønsted acid sites, which promoted the isomerization of glucose to fructose followed its dehydration to 5-hydroxymethylfurfural (HMF). Mannose was also formed via the epimerization of glucose. Of them, the mesoporous Nb 4 W 4 exhibited the best catalytic activity with a comparatively low E a about 90.2 kJ/mol and good stability in aqueous medium. The kinetic behavior revealed that Lewis acid sites facilitated to glucose-to-fructose isomerization while Brønsted acid sites promoted the dehydration of fructose to form HMF.
研究领域:
催化化学
·
生物质转化
·
绿色化学
·
多相催化
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材料化学
·
碳水化合物化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Dandi Zhou,Min Wang,Jing Dong,Shiyun Ai
The rapid and sensitive detecting technique for subgroup J of avian leukosis viruses (ALVs-J) needs to be developed as soon as possible in order to not only reduce economic losses but also ensure the food safety. In this paper, a novel electrochemical immunosensor was built based on mesoporous graphitic carbon nitride (mpg-C 3 N 4 ). Mpg-C 3 N 4 was used as the sensor platform to bond with the primary antibodies (Ab 1 ). The compound of thionine and mpg-C 3 N 4 (Th-mpg-C 3 N 4 ) was synthesized for the first time to serve as the electroactive probe as well as the carrier of secondary antibodies (Ab 2 ). Compared to bulk g-C 3 N 4 , mpg-C 3 N 4 possesses larger specific surface area, smaller electrochemical resistance and abundant active sites. So the proposed electrochemical immunosensor exhibited amplified detective signals which realized the sensitive detection of ALVs-J. Under the opitimized conditions, the immunosensor exhibited outstanding analytical performance for the detection of ALVs-J whose titer ranged from 10 2.08 to 10 4.0 TCID 50 /mL (TCID 50 : 50% tissue culture infective dose) with a low detection limit of 120 TCID 50 /mL (S/N = 3). The sensitivity of the immnosensor was 6.15 μA/(TCID 50 /mL). This high sensitive immunosensor also displayed good selectivity, reproducibility and stability. Last but not least, this new strategy may be of great promise for clinic application in the future.
研究领域:
生物医学工程
·
免疫学
·
病毒学
·
分析化学
·
纳米生物技术
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·Vol. 44
·期 12
·6148-6159
·
IF 4.084
Xiaoyu Zhang,Shiyuan Yu,Qian Zhu,Lianhua Zhao
The novel SP/IL/AMS composite membrane doped with amino-functionalized mesoporous silica (AMS) was successfully prepared. Sulfonated poly ether ether ketone (SPEEK, SP) was used as the polymer matrix and the ionic liquid (IL) was N -ethylimidazolium trifluoromethanesulfonate (EIm[Tfo]). Its properties were compared with SP/IL/NMS composite membrane doped with non-functionalized mesoporous silica (NMS). Fourier transform infrared spectroscopy (FT-IR) analysis indicated that the components in the composite membrane were bound by intermolecular forces. In addition, an acid-base interaction was formed between -NH 2 in AMS and -SO 3 H in SPEEK. The acid-base pair is beneficial to proton conduction. The anhydrous proton conductivity of SP/IL/3-AMS-7.5 composite membrane is about 4 times higher than that of the SP/IL/NMS-7.5. In addition, the good interfacial compatibility between AMS and polymer matrix is conducive for creation continuous proton transfer channel. Thermogravimetric analysis (TG) showed that all composite membranes were stable at 270 °C. The leaching of IL data indicated that IL can be effectively retained due to the presence of -OH and -NH 2 on the NMS and AMS surfaces. The SP/IL/AMS composite membrane could be used in proton exchange membrane fuel cells under medium temperature and anhydrous conditions.
研究领域:
材料科学
·
高分子化学
·
能源材料
·
燃料电池
·
膜科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2015
·Vol. 27
·期 4
·3549-3556
·
IF 1.569
Wang Lu,Yang Zhouyong,Ni Xiuyuan
We prepare the mesoporous polythiophene–WO 3 film through in situ polymerization which is initiated by WO 3 , and fabricate the electrochromic device with the composite film. The influences of the electrolyte ions, film morphologies and counter electrode on the electrochromism of the devices are explored by UV–Vis transmittance spectra and cyclic voltammetry tests. With the aim to enhance the contrast optical transmittance, we develop the binary composite electrolytes of LiClO 4 and N(C 4 H 9 ) 4 ClO 4 solution which can promote intercalation/deintercalation process. Besides that, we use polyethylene oxide as pore-forming agent on the polythiophene–WO 3 films, so that it will be easier for electrolyte ions to diffuse in the porous film. A NiO layer also has a complementary effect on the cathodic coloration films and increases the contrast optical transmittance remarkably. Equipped with the binary electrolyte and the NiO layer as the counter electrode, the film device exhibits high performance with the contrast optical transmittance (ΔT) of 62 % and the coloration efficiency of 212.6 cm 2 /C.
研究领域:
材料科学
·
电化学
·
功能材料
·
纳米材料
·
能源材料
·
表面科学
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2013
·
IF 3.365
Jing Cuan,Bing Yan
In our work, we achieve the multi-component assembly of novel kinds of photofunctional hybrid materials with polyoxometalates (POMs, Na 9 EuW 10 O 36 ·32H 2 O (EuW 10 O 36 9 - denoted as EuW10)) and benzoate (4-aminobenzoate, 4-hydroxybenzoate, 4-mercaptobenzoate) modified mesoporous silica through imidazolium ionic liquid (IL, 1-methyl-3-(trimethoxysilylpropyl) compound as double functional linkage. Using Pluronic P123 surfactant as a template, benzoate functionalized SBA-15 mesoporous host is synthesized as result of the co-condensation of tetraethoxysilane (TEOS) and benzoate modified siloxane as precursor. We fabricate POM into the framework of functionalized SBA-15 mesoporous silica with IL. Here IL behaves as double linkage, which both interact with PMO with electrostatic force through ion exchange and form covalent bond to the functionalized SBA-15 mesoporous silica through its alkoxy group after cohydroxylysis and copolycondensation process. Tb 3+ is further introduced into the above hybrid system through coordination bond to carboxylate group of benzoate unit, which can be expected to modify luminescence color and to obtain close white luminescence. The physical characterizations prove these hybrid materials possess high surface area, uniform mesoporous structure, good crystallization and relatively excellent luminescence properties.
研究领域:
无机化学
·
材料化学
·
纳米功能材料
·
光物理学
·
配位化学
·
溶胶-凝胶科学
·
稀土发光材料
✓ 已验证
DOI
高影响因子
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
·
2018
·
IF 2.559
Peng Zhang,Menghuan Tang,Qin Huang,Guanjian Zhao,Ning Huang,Xiang Zhang,Ying Tan,Yuan Cheng
Mesoporous silica nanoparticles (MSNPs) of a small diameter were loaded with the anticancer drug temozolomide (TMZ), coated with polydopamine (PDA), and conjugated with Asn-Gly-Arg (NGR) for use in the treatment of glioma. The accumulation of NGR-MSNPs in C6 cells was shown to be higher than that of unmodified MSNPs. Anticancer drugs can cause autophagy in tumor cells, whereas autophagy inhibitors can block this reaction and enhance the therapeutic effect of the drugs. In this study, we demonstrated that MSNP-TMZ-PDA-NGR had stronger autophagy- and apoptosis-inducing effects in C6 cells than TMZ alone, and its anticancer effect was further enhanced when combined with autophagy inhibition. These results demonstrate that the combination of targeting vehicles and autophagy inhibitors may have research value in the treatment of gliomas.
研究领域:
纳米技术
·
药学
·
肿瘤学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）