Stöber法探究梯度炭化工艺制备酚醛树脂多孔碳球

Exploring the Preparation of Porous Carbon Spheres of Phenolic Resin by Gradient Carbonization Process Using Stöber Method

Stöber法制备二氧化硅球的方法被拓展到合成间苯二酚甲醛聚合物微球,该方法简单,适合制备各种大小的球体。为开发高效绿色环保的酚醛树脂基多级孔纳米碳球,研究了Stöber法制备木质素改性酚醛树脂,且探究梯度炭化工艺以制备孔径可控、工艺简单、分散均匀的纳米级多孔碳球,碳球尺寸在50~200 nm范围,具备418.7538 m^(2)·g^(-1)的高比表面积,平均孔径在5~6 nm范围内,木质素酚醛树酯镍氮共掺杂碳微球(LGPCS)材料具备1692.439 F·g^(-1)的高比电容,能够很好地应用于超级电容器。

The method of synthesizing silica spheres via the Stöber process has been extended to fabricate resorcinolformaldehyde(RF)polymer microspheres,demonstrating a straightforward approach suitable for creating spheres of varied sizes.In the pursuit of developing efficient,eco-friendly phenolic resin-based multilevel porous carbon spheres,this study investigates the production of lignin-modified phenolic resin using the Stöber method.It explores a gradient carbonization process that enables the fabrication of controllable pore size,simple process,and uniformly dispersed nanoporous carbon spheres.The carbon spheres range in size from 50~200 nm and possess a high specific surface area of 418.7538 m^(2)·g^(-1),with an average pore diameter within the 5~6 nm range.When applied to supercapacitors,the LGPCS material exhibits a high specific capacitance of 1692.439 F·g^(-1).