化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (1) : 167-170. DOI: 10.19817/j.cnki.issn1006-3536.2022.01.034

科学研究

蘑菇状多孔分级结构ZnTiO₃/TiO₂复合光催化剂的制备

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Preparation of a mushroom-like porous ZnTiO₃/TiO₂ composite photocatalyst with hierarchical structure

Li Xiangyan, Dong Rulin, Chen Zhidong, Jin Changchun

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文章历史 +

Received		Published
2020-09-17		2022-01-20
Issue Date	Revised Date
2022-02-08	2020-09-17

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摘要

以碱式醋酸锌和钛酸四正丁酯分别为锌源和钛源,采用溶胶-凝胶过程合成了具有蘑菇形状分级结构的ZnTiO₃/TiO₂复合光催化剂,并应用XRD、FT-IR、FESEM和光电流等分析技术,考察了锌-钛比例、煅烧温度对所合成光催化剂的形貌、微结构及光电特性的影响。当样品锌-钛物质的量比为1:3,煅烧温度为500℃时,催化剂粒子呈现多孔或中空的蘑菇形状,微米尺寸的蘑菇状催化剂由纳米尺寸的ZnTiO₃和TiO₂晶体构建。对亚甲基蓝溶液的光催化降解实验表明,该复合光催化剂具有较高的活性,紫外光照30min内,亚甲基蓝的降解率达96%。

Abstract

Amushroom-like ZnTiO₃/TiO₂ composite photocatalyst with hierarchical structure was synthesized by a sol-gel process,using zinc hydroxide acetate and tetra-n-butyl titanate as the zinc and titanium sources.The effects of Zn-Ti molar ratio and annealing temperature on the morphology,microstructure and photoelectric characteristics of the synthesized photocatalyst were investigated by using XRD,FT-IR,FESEM,and photocurrent techniques.When Zn-Ti molar ratio was 1:3 and the annealing temperature was 500℃,a mushroom-like porous or hollow photocatalyst was obtained,Which had a micron size and constructed by building blocks of nano-sized ZnTiO₃ and TiO₂ crystals.The photocatalytic degradation of methylene blue solution showed that the photocatalyst had high activity,and the degradation rate of methylene blue reached 96% after the irradiation of UV light for 30min.

关键词

蘑菇状ZnTiO₃/TiO₂ / 多孔微结构 / 分级结构 / 光催化

Key words

mushroom-like ZnTiO₃/TiO₂ / porous microstructure / hierarchical structure / photocatalysis

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蘑菇状多孔分级结构ZnTiO₃/TiO₂复合光催化剂的制备[J]. 化工新型材料, 2022, 50(1): 167-170 DOI:10.19817/j.cnki.issn1006-3536.2022.01.034

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参考文献

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