铁掺杂沸石咪唑酯基金属有机框架材料ZIF-8及其热处理产物对洛克沙胂的吸附研究  

Fe-doped Zeolitic Imidazolate Frameworks ZIF-8 and Adsorption Study for Roxarsone of Its Heat Treatment Products

作　　者：卢慧宫 吴一楠[1] 李舒[1] 顾逸凡 李风亭[1] 张冰如[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《山东化工》2016年第2期32-35,共4页Shandong Chemical Industry

摘　　要：以原位负载乙酰丙酮铁的ZIF-8为前驱体,在N_2氛围下分别在300℃和700℃下热解得到不同的产物。实验结果表明,300℃条件下热解ZIF-8结构稳定保持,得到了负载γ-Fe_2O_3的ZIF-8,具有发达的孔道结构,比表面积为1430 cm^2/g,总孔容为0.50 cm^3/g;而在700℃条件下热解,ZIF-8骨架结构坍塌,产物为复合结构的γ-Fe_2O_3和多孔碳材料,比表面积为443 cm^2/g,总孔容为0.51 cm^3/g,其中介孔占主要部分。以空白ZIF-8、铁掺杂ZIF-8在300℃和700℃热处理产物用于水中洛克沙胂的吸附。整个吸附过程均可在6 h内达到平衡,平衡吸附量分别为135.87 mg/g、158.90 mg/g和99.94 mg/g。铁掺杂ZIF-8在300℃热处理产物对洛克沙胂溶液吸附效果最好。The products are obtained via thermal conversion of Fe- doped metal- organic framework ZIF- 8 at N_2 atmosphere. Through characterization of the products,it is found that ZIF- 8 @ γ- Fe_2O_3 was obtained at 300 ℃ which has specific pore structure. Its surface area and total pore volume were 1430 cm^2/ g and 0. 5 cm3/ g,respectively. While at 700 ℃,the structure of ZIF- 8 decomposed and we got the composite content of γ- Fe_2O_3 and porous carbon. The surface area was 443 cm^2/ g and the total volume was 0. 5 cm^3/ g with mesoporous structure. ZIF- 8,Fe- ZIF- 8- T7 and Fe-ZIF- 8- T7 were used to adsorb 20 mg / L roxarsone solution. The equilibrium adsorption capacity of them were 135. 87 mg / g、158. 90 mg / g and 99. 94 mg / g respectively within 8 h. The results showed that Fe- ZIF- 8- T3 had best adsorption effect for Roxarsone.

关 键 词：金属有机框架 铁掺杂 ZIF-8 吸附 洛克沙胂 

分 类 号：X131.3[环境科学与工程—环境科学]