CdS/ZIF-8催化剂的制备及其在降解印染废水中的应用

摘要：

以类沸石咪唑酯骨架材料ZIF-8为催化剂载体,通过加热回流的方式将CdS负载到ZIF-8上形成CdS/ZIF-8半导体光催化剂,用XRD,SEM,BET,XPS等表征手段对催化剂进行结构分析.用罗丹明B(RhB)溶液模拟印染废水,探究CdS的负载量、催化剂投加量、溶液初始浓度、pH等因素对废水降解效率的影响,并对CdS/ZIF-8的光催化稳定性进行了研究.在CdS和ZIF-8的复合比例为2∶1,投加量为40 mg,RhB溶液质量浓度为20 mg/L,pH=3的条件下,RhB去除率可达99.4%.循环3次实验后,RhB降解率仍然高达96.1%.CdS/ZIF-8具有良好的光催化活性和稳定性,为CdS在印染废水中的实际应用提供了新的思路.

Zeolite-like imidazole ester framework material ZIF-8 was used as catalyst carrier,and CdS was loaded onto ZIF-8 by heating and refluxing to form CdS/ZIF-8 semiconductor photocatalysts.The structures of the catalysts were analyzed by XRD,SEM,BET,XPS.Rhodamine B(RhB)solution was used as simulating dyeing wastewater.The effects of CdS loading,catalyst dosage,RhB concentration,pH on the degradation of RhB wastewater were investigated,and the stability of CdS/ZIF-8 was studied by cyclic experiments.The removal efficiency of RhB reached 99.4%under the conditions of the compound ratio of CdS and ZIF-8 by 2∶1,40 mg catalyst dosage,20 mg/L RhB and pH=3.After three cycles of experiments,the degradation rate of RhB was still as high as 96.1%.CdS/ZIF-8 has good photocatalytic activity and stability,which provides a new idea for the practical application of CdS in dyeing wastewater.

作者：

白书立 薛瑶佳 黄文豪 赖梅贞 李换英

Bai Shuli;Xue Yaojia;Huang Wenhao;Lai Meizhen;Li Huanying(School of Biotechnology and Health Science,Wuyi University,Jiangmen 529020,China)

机构地区：

五邑大学生物科技与大健康学院

出处：

《betway官方app 学报：自然科学版》 CAS 北大核心 2022年第2期121-128,共8页

Journal of Henan Normal University(Natural Science Edition)

基金：

国家自然科学基金(21006065) 江门市科技局基础与理论科技计划项目(2019JC01011,2020JC01021).

关键词：

ZIF-8 CDS 光催化氧化 印染废水处理

ZIF-8 CdS photocatalytic oxidation dyeing wastewater treatment

分类号：

X703 [环境科学与工程—环境工程]

CdS_ZIF-8催化剂的制备及其在降解印染废水中的应用.pdf