Ag修饰C掺杂ZnO催化剂的制备及其催化性能  

Preparation and characterization of Ag modified C doped ZnO catalysts

作　　者：焦玉荣[1] 唐明璇 温俊峰[1] 张亚[1] 相玉琳[1] 高雯雯[1] 李健[1] 高立国[1] JIAO Yurong;TANG Mingxuan;WEN Junfeng;ZHANG Ya;XIANG Yulin;GAO Wenwen;LI Jian;GAO Liguo(College of Chemistry and Chemical Engineering,Yulin University,Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization,Yulin 719000,China)

机构地区：[1]榆林学院化学与化工学院、陕西省低变质煤洁净利用重点实验室,陕西榆林719000

出　　处：《化工科技》2023年第1期16-22,共7页Science & Technology in Chemical Industry

基　　金：国家地区科学基金项目(22266035,41967022,22168043,52062047);陕西省低变质煤洁净利用重点实验室项目(21JS049);PVA基水凝胶柔性和保水性研究项目(2022HX90);陕西科技计划项目(2022QFY06-05,2020QFY05-05);中科院-榆林学院联合基金项目(2021003)。

摘　　要：以2-甲基咪唑和六水硝酸锌为前驱体制备金属有机骨架ZIF-8,将其溶于甲醇溶液中与硝酸银混合,将其煅烧制得Ag修饰的C掺杂ZnO材料(Ag/C-ZnO)。通过FTIR、XRD、SEM、DRS、XPS和BET等对材料进行结构、组成、形貌和孔径大小等分析。以甲基橙(MO)溶液为降解模型,考察了催化剂的种类和催化剂的用量等因素。结果表明,Ag/C-ZnO催化剂稳定性好,催化活性强;在室温下0.030 g Ag/C-ZnO对50 mL c(MO)=10 mg/L溶液、降解60 min后的降解率为92.5%;且催化过程符合一级动力学模型。Metal-organic framework ZIF-8 was prepared by 2-methylimidazole and zinc nitrate hexahydrate as precursors,which was dissolved in methanol solution and mixed with silver nitrate,and finally calcined to obtain Ag-modified C-doped ZnO materials(Ag/C-ZnO).The structure,composition,morphology and pore size of the material were analyzed by FTIR,XRD,SEM,DRS,XPS and BET.The photocatalytic properties of materials were investigated by taking methyl orange(MO)solution as the degradation model,the factors such as the type of catalyst and the amount of catalyst were investigated.The results show that the Ag/C-ZnO catalyst has good stability and strong catalytic activity.The degradation rate of 0.030 g Ag/C-ZnO for 50 mL 10 mg/L MO solution reaches 92.5% at room temperature after 60 min.And the catalytic process conforms to the first-order kinetic model.

关 键 词：工业废水 复合催化剂 光催化 甲基橙 

分 类 号：O611[理学—无机化学]