FTIR spectra of (a) CNT and (b) f-CNT. - ResearchGate
Multi-walled carbon nanotubes (CNTs) were functionalized on treatment with nitric acid and the surface-modified CNT was characterized using Fourier transform infrared spectroscopy (FTIR ...
Characterization of functionalized multi-walled carbon nanotubes
2023年7月1日 · Multi-walled carbon nanotubes (MWCNTs) are functionalized to determine structural and chemical changes occurred due to oxidation at room temperature in presence of an aqueous solution of concentrated HNO3. The raw and processed (functionalized) MWCNTs were investigated with FTIR and FESEM spectroscopy methods.
FTIR spectra of f-CNT and s-CNT, vertically stacked for comparison.
A pristine SWCNT buckypaper and chemically functionalized SWCNT (f-CNT) were compared using Fourier-transform infrared (FTIR) spectroscopy peaks that represent multiple functional groups (...
FTIR spectroscopy as a tool for nano-material characterization
2010年11月1日 · In this work, we have successfully demonstrated the use of the combination of an experimental FTIR analysis and a theoretical FTIR model to characterize the functionalization of nano-sized objects. We successfully unveil the identity of the molecular conformations present on the f-CNTs and prove the presence of covalent bonding between the ...
(a) FTIR spectra of CNTs modified by different methods
Download scientific diagram | (a) FTIR spectra of CNTs modified by different methods (the appearance of characteristic peaks are indicated by blue arrows): (i) raw CNTs, (ii) CNTs modified with...
碳纳米管（CNTs）常见的表征方法 - 知乎 - 知乎专栏
碳纳米管是晶形碳的一种同位素异形体，从结构上为蜂巢状的一维纳米空心管，其中 C-C 原子以 sp2杂化构成共价键。 根据碳纳米管的管壁数，可分为单壁碳纳米管（SWCNT）和多壁碳纳米管（MWCNT），而根据碳纳米管的结构特征又可分为 扶手椅形 、 锯齿形 和 螺旋型 三种，其中螺旋型碳纳米管具有手性，而锯齿形和扶手椅型碳纳米管没有手性。 图1. 单壁碳纳米管和多壁碳纳米管的结构示意图. 碳纳米管重量轻，六边形结构连接完美，具有许多优异的力学性能、导电性 …
碳纳米管的表面修饰及FTIR,Raman和XPS光谱表征 - 豆丁网
2014年3月10日 · Fig1 1 FTIR spectra of CNTs oxidized by dif ferent reagents: a, the raw CNTs; b, K9; c, H6; d, B12. 图2 是稀硝酸中不同时间碳纳米管修饰的红外光谱图, 随着反应时间的增加, C O 的峰发生了蓝移: 当反应时. 间为3, 6, 10 h 时, 振动峰分别出现在1 714, 1 724, 1 736. cm - 1. 处。
一文读懂傅里叶红外光谱图（FT-IR） - 知乎专栏
一、光谱峰位，峰数和峰强1.峰位 化学键的力常数K越大，原子折合质量越小， 键的振动频率越大，吸收峰将出现在高波数区 (短波长区)反之，出现在低波数区 (高波长区)。 2.峰数 峰数与分子自由度有关。 无瞬间偶基距变化时，无红外吸收。 3.峰强 瞬间偶基距变化大，吸收峰强;键两端原子电负性相差越大 (极性越大)，吸收峰越强; 由基态跃迁到第一激发态，产生一个强的吸收峰，基频峰;由基态直接跃迁到第二激发态，产生一个弱的吸收峰，倍频峰; 峰强补充问题问题: C=O …
FTIR studies of nitrogen doped carbon nanotubes
2006年2月1日 · Fourier transform infrared (FTIR) spectroscopy was carried out in the range of 400–4000 cm −1 to study the attachment of the impurities on carbon nanotubes. FTIR spectra of the as-grown MWCNTs show dominant peaks at 1026, 1250, 1372, 1445, 1736, 2362, 2851, 2925 cm −1 that are identified as Si–O, C–N, N–CH 3, CNT, C–O, and C–H x respectively.
Fourier transform infrared spectroscopy (FTIR) spectra of: ( a ) …
Fourier transform infrared (FTIR) spectra of pristine CNTs and oxidised carbon nanotubes (OCNTs) are shown in Figure 1. The OCNTs present peaks at 1208 cm − 1 , 1350 cm − 1 and 1713 cm − 1...