Effect of Surface Oxidation on the Colloidal Stability and Sorption Properties of Carbon Nanotubes

约翰霍普金斯大学表面氧化对碳纳米管胶体稳定性和吸附性能的影响本项目将研究碳纳米管（CNT）的表面组成和胶体稳定性及其在水生环境中的吸附性能之间的关系。这些信息对于预测碳纳米管和相关分层纳米结构的运输性质和环境影响的模型的发展至关重要。该项目还将发展分析技术，以表征黑碳材料的表面特性，提供关于氧浓度和暴露于不同氧化条件下碳纳米管上产生的表面结合含氧官能团分布的定量信息。吸附研究将提供一个数据库，可用于比较和对比碳纳米管与更传统的、研究得更充分的黑碳（BC）吸附剂（如煤烟、木炭和活性炭）的性能。

CBET-0731147William BallJohns Hopkins UniversityEffect of Surface Oxidation on the Colloidal Stability and Sorption Properties of Carbon NanotubesThis project will characterize relationships between the surface composition and colloidal stability of carbon nanotubes (CNT) and their sorption properties in aquatic environments. Such information is critically important for the development of models to predict the transport properties and environmental impacts of CNTs and related hierarchical nanostructures. The project also will develop analytical techniques to characterize the surface properties of black carbon materials, providing quantitative information on the concentration of oxygen and the distribution of surface-bound oxygen-containing functional groups produced on CNTs exposed to different oxidizing conditions. Sorption studies will provide a database that can be used to compare and contrast CNT properties with more traditional, well-studied black carbon (BC) sorbents such as soots, chars and activated carbons.