棉花纤维素模板制备微/纳米ZnO及光催化应用研究  

Preparation of ZnO Micro/Nanoparticles on Cotton Cellulose Template and Its Photocatalytic Performance

作　　者：赵菡婷 曲雯雯[1,2,3] 张家麟[1,2,3] 朱义[2,3,4] 陈阵[1] 余明远[1,2,3] 

机构地区：[1]昆明理工大学理学院,昆明650500 [2]微波能工程应用及装备技术国家地方联合工程实验室,昆明650093 [3]非常规冶金省部共建教育部重点实验室,昆明650093 [4]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《材料导报》2016年第16期45-49,共5页Materials Reports

基　　金：国家自然科学基金(51562018;51004059);昆明理工大学学科方向团队(14078318)

摘　　要：以棉花纤维素为模板,Zn(CH_3COO)_2·9H_2O为原料,经高温煅烧制得具有纤维素管状结构的ZnO微/纳米材料。通过调整煅烧温度,优化了催化剂的制备工艺。运用XRD、SEM、FT-IR和UV-Vis DRS对催化剂样品进行结构表征,以亚甲基蓝(MB)为目标降解物,研究了该ZnO光催化剂在紫外光照下,不同制备温度对材料光催化性能的影响。研究表明,煅烧温度850℃的样品光催化活性最佳,反应60min对MB的降解率达97%。经过4段循环,光降解率仍维持在86%以上,表明此微/纳米ZnO是一种有效稳定的光催化剂。ZnO micro/nanoparticles were successfully synthesized by loading Zn（CH3COO）2·9H2O on cotton cellulose template via high temperature calcination.The structure and morphology of the samples were characterized by XRD,SEM,FT-IR and UV-Vis DRS.Photocatalytic performance of the prepared samples were evaluated by photodegradation of methylene blue（MB）under UV light irradiation.The results indicated that reaction temperature has a strong influence on the microstructure of ZnO nanoparticles.The ZnO sample prepared under 850 ℃ showed an enhanced photocatalytic activity with a maximum MB phtotodegradation rate of 97%in 60 min.After four photocatalytic cycles,the degradation rate retained about 86%,indicating that the stability and durability of micro/nano-ZnO photocatalyst under considered conditions.

关 键 词：纤维素 模板 ZNO 微/纳米材料 光催化 高温煅烧 

分 类 号：TB333[一般工业技术—材料科学与工程]