摘要：本论文采用原位沉积法以凹凸棒土（ATP）为半导体载体，依次将不同质量分数的g-C3N4和Co3O4负载在凹凸棒土的表面，制备了不同Co3O4含量的ATP/g-C3N4-Co3O4-w（w=mCo3O4/(mCo3O4+mATP/g-C3N4)=15%，25%，35%，45%，55%）复合光催化剂。借助（XRD），（SEM），（BET），（UV-vis）等手段对所制得的产品进行表征。以可见光光催化降解甲基橙为探针反应，考察了不同Co3O4含量的复合材料的光催化性能。结果表明，ATP/g-C3N4-Co3O4复合材料不仅保持了凹凸棒土基本结构，且产物包覆性好、分散均匀、比表面积大。与纯ATP和g-C3N4相比，ATP/g-C3N4-Co3O4展现出非常优异的光催化性能；光照2h后，不同质量分数复合材料的光催化性能以Co3O4质量分数w=25%为最佳效果，且对甲基橙的降解率达到92。90%，且经过5次循环后降解率有所降低，但是仍能达到80。00%左右。91367

毕业论文关键词：凹凸棒土，原位沉积法，Co3O4，g-C3N4，光催化

Abstract: In this experiment, composite photocatalyst ATP/g-C3N4-Co3O4 were prepared via loading different mass ratio of g-C3N4 and Co3O4 （ATP/g-C3N4-Co3O4-w（w=m Co3O4/(m Co3O4+m ATP/g-C3N4)=15%，25%，35%，45%，55%））on the surface of attapulgite by in-situ depositing   technique。   XRD,   SEM,   BET   and   UV-vis  characterized   the   products。     The

photocatalytic performance of the composites with different Co3O4 content were investigated by using the photocatalytic degradation of methyl orange (MO) as the probe。 The results show that the basic structure of attapulgite in the ATP/g-C3N4-Co3O4 composites maintained and the product had good coating property, uniform dispersion and large specific surface area。 Compared to pure ATP and g-C3N4, the ATP/g-C3N4-Co3O4 composites showed superior photocatalytic performance。 After 2h, the photocatalytic performance of the composites reached the optimum when the mass fraction of Co3O4 was 25%, and the degradation rate of methyl orange reached 92。90%。 After 5 cycles, the degradation rates decreased, but still maintained at about 80%。源G于J优L尔V论N文M网WwW.youeRw.com 原文+QQ75201`8766

Key words:Attapulgite，In situ deposition，Co3O4， g-C3N4

目录

1 前言 1

2 实验部分 2

2。1 试剂和仪器 2

2。2 复合光催化剂的制备方法 2

2。2。1 ATP悬浊液的制备 2

2。2。2 ATP/g-C3N4的制备 2

2。2。3 Co3O4的制备 2

2。2。4 ATP/g-C3N4-Co3O4的制备 3

2。3 材料表征 3

2。4 材料光催化性能测定 3

3 结果与讨论 4

3。1 表征谱图分析 4

3。1。1 XRD谱图分析 4

3。1。2 SEM分析 5

3。1。3