The acicular α-Al2O3 (width<4 μm, length<20 μm) obtained by the thermal decomposition of synthetic diaspore at 530, 600 and 1300°C was characterized by means of XRD, SEM, FTIR, 27Al MAS-NMR, XPS, nitrogen adsorption-desorption isotherm and BET surface area. The high adsorptive act...
The Fourier Transform Infrared Spectroscopy (FTIR) spectrum of (NiO) thin film shows NiO nanoparticles had its IR peak of Ni-O stretching vibration and shifted to blue direction. Due to their quantum size effect and spherical nanostructures, the FTIR absorption of NiO nanoparticles is blue-shifted...
Fourier transform infrared (FTIR) spectra (PerkinElmer Spectrum Two ATR spectrometer) were acquired to examine changes to the functional groups. Thermogravimetric analysis (TGA) was performed to analyze the thermal stability at a heating rate of 10 °C per minute from 30 °C to 800 °C in a ...
Niobium doped biosolubility glasses in the Na–Ca–(Mg)–P–Si–O system were prepared by using an untypical two-step synthesis route. The parent glass was melted in air atmosphere at 1350 °C followed by re-melting the glass in Nb crucible with the addition of metallic Mg/Ca powder in...
With an increase in the Si/Fe ratio, a typical XRD peak at 2.5 broadens and shifts toward 3 ; the position of Si-O stretching band in FTIR spectrum shifts from 930 to 1003 cm–1; the pHpzc value strongly decreases from 8.41 to 1.99. The surface area, equal to 280 m2/g for pure ...
O 原子异相的非对称伸缩振动模式 AS2 ) 由于该峰为表面氧化层和界面层的合成吸 收峰9对界面层中硅\氧元素以何种方式结合从红外 3 7 3 <半导体光电> 2004 年第 25 卷第 5 期 陈松岩 等! Si " Si 直接键合界面的 FTIR 和 XPS 研究 谱中得出的信息仍不清晰 表 2 Si 吸收峰拟合结果 PeakArea Cente...
Multinuclear low temperature solution NMR and FTIR has been used to monitor the hydrolysis and polymerisation chemistry involved in the preparation of mult... CC Harrison,Z Luo - Journal of Sol-Gel Science and Technology 被引量: 2发表: 1994年 The effect of copolymerisation on the performance of...
界面的化学态和键合键的形成机理。首先测量了高温键合样品的红外透射谱(FTIR),结果表明界面组分为Si和O,无OH和H网络存在,这使得对劈裂Si表面作XPS(X射线光电子谱)测试的结果可直接用于界面研究。XPS对界面组成以及原子浓度随溅射深度和温度变化的结果与IR分析结果是相互印证的。
Using the so-called dual-comb spectroscopic technique3, broadband absorption spectra can be measured with superior resolution and acquisition time compared with other techniques such as standard Fourier transform spectroscopy (FTIR). In this technique, one of the combs is used as an array of local ...
The decrease of intensity of the IR absorption peak at ∼1090 cm–1 corresponding to Si-O bond-stretching vibration has been observed for the sample annealed at 100 °C. The typical variation of average positron lifetime (τav) with annealing temperature also confirms the XRD and IR ...