The sol-gel reaction was carried out between formaldehyde (CH2O) and sodium lignin sulfonate used as the phenol resouce,which was stabilized by polyvinyl alcohol (PVA1788) and in existence with the cocrosslinking agent as well as the post-added precursor of tetrabutyl titanate (C16H36O4Ti).The hydrogel was dried and treated under high temperature,which produced lignin phenolic-formaldehyde based carbon micropheres with nano-TiO2 loaded on.Characterizations was taken on the composition,particle size,morphology,and specific surface areas of the final product.The results revealed that the cocrosslinking agent,including the type and the content,shown a significant effect on the size,morphology and specific surface area of the composite carbon microspheres.With 1,4-butanediol diglycidyl ether (BDE) serving as the cocrosslinking agent under the its optimal dosage,the sphere products in the size of about 224 nm can be synthesized in a uniform and controlled manner.These composite spheres were of photocatalytic activities,which has been further verified by the catalytic photodegradation experiments of bisphenol A in water.
Fu Jiahao, Li Xing, Qiu Teng, Li Xiaoyu, Ye Jun
. One-pot preparation of lignin-based carbon-TiO2 nanocomposite microspheres with photocatalytic activity[J]. New Chemical Materials, 2021
, 49(4)
: 207
-211
.
DOI: 10.19817/j.cnki.issn1006-3536.2021.04.045
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