ATP/g-C3N4-Cd0.5Zn0.5S复合光催化剂的制备及其性能研究

摘要：本文以凹凸棒土（ATP）为载体，通过原位沉积，结合冷冻干燥、程序焙烧工艺在其表面负载类石墨相氮化碳(g-C3N4)，随后将制备好的Cd0。5Zn0。5S复合在ATP/g-C3N4表面，制备了一系列不同质量分数的ATP/g-C3N4-Cd0。5Zn0。5S（质量分数w%=Cd0。5Zn0。5S：ATP/g-C3N4=15%、25%、35%、45%、50%、55%、65%）复合材料。采用XRD，SEM，BET，UV-vis、IR等分析手段对产物进行了表征，研究表明制备的ATP/g-C3N4-Cd0。5Zn0。5S复合材料负载效果好、比表面大。以可见光光催化降解甲基橙为探针，研究ATP/g-C3N4-Cd0。5Zn0。5S的光催化性能，考察了不同质量分数的Cd0。5Zn0。5S对其光催化性能的影响。结果表明：与纯ATP和g-C3N4相比，ATP/g-C3N4-Cd0。5Zn0。5S复合材料的光催化性能得到明显提高，且Cd0。5Zn0。5S的质量分数不同，ATP/g-C3N4-Cd0。5Zn0。5S光催化性能不同；当质量分数w%=50%时，降解120min后，MO的降解率达到96。0%。91371

毕业论文关键词：石墨相氮化碳，Cd0。5Zn0。5S，可见光催化，凹凸棒土

Abstract: In this paper, the Attapulgite (ATP) is set as the carrier of g-C3N4 to prepare ATP/g-C3N4 composite by in-situ deposition, freeze-drying and calcination。 Then a series of different mass fraction of Cd0。5Zn0。5S were deposited onto ATP/g-C3N4 to prepare ATP/g-C3N4-Cd0。5Zn0。5S (mass fraction w% = Cd0。5Zn0。5S: ATP/g-C3N4 = 15%, 25%, 35%, 45%,

50%, 55%, 65%)。 The products were characterized by XRD, SEM, BET, UV-vis and FTIR。 The results show that g-C3N4 is well coated on the surface of the ATP, meaning that the original structure of the ATP maintained and the specific surface area of the g-C3N4 increased obviously。 In addition, the Cd0。5Zn0。5S particles are also uniformly dispersed onto ATP/g-C3N4。 The photocatalytic activity of different mass fraction composites is investigated by using visible-light degradation of methyl orange as probe。 The results show that ATP/g-C3N4-Cd0。5Zn0。5S composites exhibit excellent visible light photocatalytic properties。 After illuminate 2 hours, the composite materials exhibit the best photocatalytic performance with the mass fraction of Cd0。5Zn0。5S fixed at 50% and the degradation rate of methyl orange reached to 96。0%。源G于J优L尔V论N文M网WwW.youeRw.com 原文+QQ75201`8766

Key words: g-C3N4, Cd0。5Zn0。5S, Visible light photodecomposition, Attapulgite, In-situ deposit

1前言 1

2实验内容 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 改性ATP的制备 2

2。2。2 ATP/g-C3N4的制备 2

2。2。3 Cd0。5Zn0。5S的制备 3

2。2。4 ATP/g-C3N4-Cd0。5Zn0。5S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 ATP/g-C3N4-Cd0.5Zn0.5S复合光催化剂的制备及其性能研究:http://www.youerw.com/huaxue/lunwen_198826.html