In order to further enhance the adsorption properties of activated carbon fiber, sonication is introduced into the process of activator impregnation on the basis of traditional chemical reactivation technology. The novel process of sonication-assisted chemical reactivation is proposed for the first time in this paper. This novel process probe a new developing route for the surface structure modification of activated carbon fiber, which also provides a new idea to enhance the traditional chemical activation technology. In this study, viscose-based activated carbon fiber is used as research object, and low concentration formaldehyde gas is used as adsorbate. The research of the novel reactivation process is researched by four activators of phosphoric acid, zinc chloride, perhydrol and nitric acid, which commonly used in chemical activation processes of industrial production. The results indicate that the novel reactivation process assisted by sonication has an obvious improvement on the pore volume of micropores and mesopores at the range of 2–5 nm, meanwhile, the content of surface functional groups increase significantly. Besides, formaldehyde adsorption properties enhanced significantly after treated by the novel reactivation process. In particular, the formaldehyde adsorption rate increased by 90.05% when phosphoric acid used as activator.

为了进一步提高活性炭纤维的吸附性能，在传统化学活化技术的基础上，将超声处理引入了活化剂浸渍过程。本文首次提出了超声辅助化学活化的新方法。这一新工艺为活性炭纤维的表面结构改性探索了一条新的发展途径，也为增强传统化学活化技术提供了新思路。在本研究中，以粘胶基活性炭纤维为研究对象，以低浓度甲醛气体为被吸附物。新型活化方法的研究是由磷酸，氯化锌，过氧化氢和硝酸四种活化剂进行的，通常用于工业生产的化学活化过程中。结果表明，声波辅助的新型活化过程在2–5 nm范围内对微孔和中孔的孔容有明显的改善，同时，表面官能团的含量也显着增加。此外，通过新的活化方法处理后，甲醛的吸附性能显着提高。特别地，当磷酸用作活化剂时，甲醛吸附率增加了90.05％。经新的活化方法处理后，甲醛的吸附性能显着提高。特别地，当磷酸用作活化剂时，甲醛吸附率增加了90.05％。经新的活化方法处理后，甲醛的吸附性能显着提高。特别地，当磷酸用作活化剂时，甲醛吸附率增加了90.05％。