化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (4) : 207-211. DOI: 10.19817/j.cnki.issn1006-3536.2021.04.045

科学研究

木质素基碳-TiO₂纳米复合物微球的一釜法制备及光催化性能研究

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One-pot preparation of lignin-based carbon-TiO₂ nanocomposite microspheres with photocatalytic activity

Fu Jiahao, Li Xing, Qiu Teng, Li Xiaoyu, Ye Jun

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Received
2020-02-13
Issue Date	Revised Date
2021-05-07	2020-02-13

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摘要

以木质素磺酸钠作为酚源,通过其与甲醛(CH₂O)在悬浮剂聚乙烯醇(PVA1788)、共交联剂及钛酸四丁酯(C₁₆H₃₆O₄Ti)前驱体的溶胶-凝胶反应,再对所得凝胶产物进行高温碳化处理,成功得到了负载纳米TiO₂的木质素基酚醛碳微球材料,并对最终产物的组成结构、粒径、形貌和比表面积等进行了表征。结果表明:共交联剂的种类和用量对微球粒径、形貌和比表面积调控存在影响。当使用1,4-丁二醇二缩水甘油醚(BDE)作为共交联剂,在适宜用量下,可制得粒径在224nm左右的复合微球。微球粒径均一,形貌可控,而且具有光催化活性,可在紫外光下催化水中的双酚A降解反应。

Abstract

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.

关键词

木质素 / 酚醛 / 纳米复合物 / 微球 / 催化

Key words

lignin / phenol-formaldehyde / nanocomposite / carbon microsphere / catalysis

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木质素基碳-TiO₂纳米复合物微球的一釜法制备及光催化性能研究[J]. 化工新型材料, 2021, 49(4): 207-211 DOI:10.19817/j.cnki.issn1006-3536.2021.04.045

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