纤维素纳米纤维负载氧化亚铜的制备及性能研究  

Study on preparation and properties of cuprous oxide supported by cellulose nanofibers

作　　者：胡英[1] 李国元 颜志勇[1] 姚勇波[1] 李喆[1] 

机构地区：[1]嘉兴学院设计学院,浙江嘉兴314001 [2]桐昆集团股份有限公司,浙江桐乡314513

出　　处：《合成纤维工业》2017年第4期24-27,共4页China Synthetic Fiber Industry

基　　金：国家重点研发计划项目(2016YFB0302700)

摘　　要：以木醋杆菌为菌种,在30℃下静态培养得到纤维素纳米纤维构建的网状薄膜,浸泡在硫酸铜溶液后,经葡萄糖还原产生的氧化亚铜跟纤维素纳米纤维紧密结合,制得纤维素纳米纤维负载氧化亚铜;分析了氧化亚铜和纤维素纳米纤维的微观结构、纤维素纳米纤维负载氧化亚铜的含量以及纤维素纳米纤维负载氧化亚铜对亚甲基蓝的降解效果。结果表明:纤维素纳米纤维直径为40~80nm,在70℃下,葡萄糖还原硫酸铜只产生氧化亚铜,没有其他杂质;在太阳光照射120 min后,纤维素纳米纤维负载氧化亚铜和氧化亚铜粉末对亚甲基蓝的降解率分别达到85%和76%。A network membrane of cellulose nanofibers was constructed by static culture with Acetobacter at 30 ℃. Copper sul- fate （ CuSO4 ） was fully absorbed by the membrane soaked in the solution of copper sulfate and was reduced into cuprous oxide （Cu2O） by glucose, which resulted in that the cuprous oxide closely combined with cellulose nanofibers. The cuprous oxide sup- ported by cellulose nanofibers were fabricated thereby. The microstructure of Cu2O and cellulose nanofibers and the Cu20 content of Cu20/cellutose nanofibers were analyzed, as was the degradation effect of Cu2O on methylene blue. The results showed that the diameters of cellulose nanofibers were 40 -80 nm, the copper sulfate was only reduced into Cu2O and nothing else by glucose at 70 ℃, and the degradation rate of methylene blue by Cu2O loaded on cellulose nanofibers and Cu2O powders were 85% and 76%, respectively, after 120-minute sunlight.

关 键 词：纤维素纤维 氧化亚铜 原位合成 亚甲基蓝 光催化降解 

分 类 号：O643.36[理学—物理化学] X791[理学—化学]