Inelastic neutron scattering study of proton dynamics in carbon blacks
Inelastic neutron scattering study of proton dynamics in carbon blacks
复制标题
炭黑中质子动力学的非弹性中子散射研究
DOI：
10.1016/0008-6223(96)00042-5
复制
发表时间：
1996
期刊：
影响因子：
10.9
通讯作者：
F. Fillaux
中科院分区：
文献类型：
--
作者：
P. Albers;G. Prescher;K. Seibold;D. Ross;F. Fillaux
给出了不同炭黑(橡胶黑、石墨化黑、氧化后气黑)和活性碳在30K下16-4000 cm−1的非弹性中子散射谱。它们揭示了这些样品中质子动力学的新方面。几乎无质子的石墨化样品类似于纯石墨。所有光谱都显示出强度的连续性，这归因于插入基本结构单元的自由质子的反冲。在连续体的顶端，或多或少明确的能带被归因于在基本结构单元的边界上化学结合的质子，或者在后氧化气体黑色的情况下，被困在拓扑缺陷中。由于羟基的存在，活性碳主要以带为主。积分强度不是简单地与分析技术给出的质子浓度有关。
Inelastic neutron scattering spectra from 16 to 4000 cm−1of various carbon blacks (rubber blacks, graphitized black, post-oxidized gas black) and activated carbon at 30 K are presented. They reveal new aspects of proton dynamics in these samples. The nearly proton-free graphitized sample is similar to pure graphite. All spectra reveal a continuum of intensity which is attributed to the recoil of free protons inserted in the basic structural units. On the top of the continuum, more or less well-defined bands are attributed to protons either chemically bound at the border of the basic structural units or, in the case of the post-oxidized gas black, trapped in topological defects. The activated carbon is dominated by bands due to OH groups. The integrated intensities are not simply related to proton concentrations given by analytical techniques.