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Self-assembling Synthesis of Vanadium Oxide Nanotubes and Simple Determination of the Content of V(IV)
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作者 麦立强 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2003年第4期21-23,共3页
High-yielding low-cost vanadium oxide nanotubes were prepared by the hydrothermal self-assembling process from vanadium pentoxide and organic molecules as structure-directing templates.Moreover,a new method was discov... High-yielding low-cost vanadium oxide nanotubes were prepared by the hydrothermal self-assembling process from vanadium pentoxide and organic molecules as structure-directing templates.Moreover,a new method was discovered for determining the content of V (IV) in vanadium oxide nanotubes by thermogravimetric analysis (TGA).This method is simple,precise and feasible and can be extended to determine the content of low oxidation state in the other transition metal oxide nanomaterials. 展开更多
关键词 vanadium oxides nanotube self-assembling synthesis thermogravimetric analysis vanadium(iv)
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PVP/Clay/Vanadium Oxide Nanocomposites Development and Characterization for Potential Use as Controlled Drug Release Matrix in Diabetes’ Treatment
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作者 Dario Barreto Reino de Almeida Maria Inês Bruno Tavares 《Materials Sciences and Applications》 2019年第12期768-782,共15页
Research in drug release field, nowadays, focuses on more efficient systems for better release of the drug and wider timespan of action, granting several benefits to the patient’s organism and to the industry. The pr... Research in drug release field, nowadays, focuses on more efficient systems for better release of the drug and wider timespan of action, granting several benefits to the patient’s organism and to the industry. The present work aims on developing a matrix of polymer nanocomposite based on Polyvinylpyrrolidone (PVP), bentonite clay and two different vanadium oxides, via spray drying technique. The goal is to achieve a long and steady release of metformin hydrochloride in future formulations with this drug. Since either the nanocomposites or metformin hydrochloride is highly hydrophilic, it is most suited for a future formulation of tablets. For now, the nanocomposites obtained were characterized through Nuclear Magnetic Resonance (NMR), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and Fourier Transform Infrared Spectroscopy (FTIR). The SEM and XRD analysis portrayed a very amorphous and homogenized material. TGA and FTIR proved the insertion of the nanoparticles, thus granting to the new material a slightly higher thermal resistance. The NMR analysis, using T1H parameters, is key for determining the formulations would behave better for extending the resistance of the nanocomposite’s matrix with the drug in later dissolution of tablets. 展开更多
关键词 Polyvinylpirrolidone vanadium Pentoxide vanadium (iv) oxide SULFATE HYDRATE NANOCOMPOSITE
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N-羟基邻苯二甲酰亚胺与8-羟基喹啉氧钒(IV)配合物协同催化分子氧氧化乙苯(英文) 被引量:5
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作者 秦金伟 伏再辉 +10 位作者 刘亚纯 何乡陵 张德喜 吴文锋 王彦龙 龚兴浪 邓晓林 武海涛 邹艳红 喻宁亚 尹笃林 《催化学报》 SCIE EI CAS CSCD 北大核心 2011年第8期1342-1348,共7页
研究了钒化合物对N-羟基邻苯二甲酰亚胺(NHPI)催化分子氧氧化乙苯反应中的调变效应.结果表明,由8-羟基喹啉及其衍生物与乙酰丙酮氧钒(IV)配位制得的8-羟基喹啉氧钒(IV)配合物的催化活性比乙酰丙酮氧钒(IV),NH4VO3和V2O5的高.在优化的反... 研究了钒化合物对N-羟基邻苯二甲酰亚胺(NHPI)催化分子氧氧化乙苯反应中的调变效应.结果表明,由8-羟基喹啉及其衍生物与乙酰丙酮氧钒(IV)配位制得的8-羟基喹啉氧钒(IV)配合物的催化活性比乙酰丙酮氧钒(IV),NH4VO3和V2O5的高.在优化的反应条件下,乙苯转化率和苯乙酮选择性可分别达60%~69%和97%.基于液体反应的紫外光谱,推测钒催化剂能够促进NHPI转变为N-氧基邻苯二甲酰亚胺自由基和1-苯基过氧化氢转变为苯乙酮. 展开更多
关键词 N-羟基邻苯二甲酰亚胺 8-羟基喹啉氧钒(iv) 需氧氧化 乙苯 苯乙酮
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透明隔热玻璃涂料的研制 被引量:10
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作者 顾广新 魏勇 武利民 《电镀与涂饰》 CAS CSCD 北大核心 2009年第3期49-52,共4页
通过掺杂钨,制备了具有常温相转变功能的二氧化钒粉体,采用特殊的研磨工艺,将掺钨二氧化钒粉体和氧化锑锡(ATO)粉体分散成亚纳米或纳米浆料,并将这些浆料直接添加到水性聚氨酯涂料中,从而得到具有一定智能功能的透明隔热保温涂料。该涂... 通过掺杂钨,制备了具有常温相转变功能的二氧化钒粉体,采用特殊的研磨工艺,将掺钨二氧化钒粉体和氧化锑锡(ATO)粉体分散成亚纳米或纳米浆料,并将这些浆料直接添加到水性聚氨酯涂料中,从而得到具有一定智能功能的透明隔热保温涂料。该涂料对玻璃附着力好,近红外透过率可调,可广泛用于建筑和汽车玻璃,具有很好的节能效果。 展开更多
关键词 关键词:玻璃 水性聚氨酯 掺钨二氧化钒 氧化锑锡 涂料 隔热:节能
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