摘要
为了获得兼具甲醛净化和抗菌性能的环境治理材料,本工作采用尿素室温浸渍结合葡萄糖原位还原法制备了载银尿素改性竹质活性炭,考察了银负载量对复合材料的形貌、表面官能团、孔结构、甲醛去除效率及抗菌性能的影响。结果表明:负载银后,竹质活性炭的多孔结构仍然保留,比表面积和总孔容有所下降;相对于原竹质活性炭,甲醛浓度为220 mg/m^(3)的静态条件下,复合材料对甲醛的去除率提高了73%,动态条件下,复合材料对甲醛的去除有效使用时间延长了27倍;对大肠杆菌和金黄色葡萄球菌的抑菌圈直径分别可达5.5 mm和6.5 mm,具有较好的抗菌性能。本工作为开发一剂多效的高附加值竹质活性炭材料提供了有效途径。
In order to obtain environmental treatment materials with formaldehyde purification and antibacterial properties,the urea modified bamboo activated carbon with silver loaded was synthesized by urea impregnation at room temperature combined with glucose in-situ reduction method in this work.The effects of silver loading on the morphology,surface functional groups,pore structure,formaldehyde removal efficiency and antibacterial properties of the composite were investigated.The results showed that the porous structures of bamboo activated carbon were remained,but the specific surface area and total pore volume decreased after loading silver.Compared to raw bamboo activated carbon,when formaldehyde concentration was 220 mg/m^(3),the removal rate of formaldehyde by the composite increased by 73%.Under dynamic conditions,the effective removal time of formaldehyde was extended by 27 times.The diameters of the inhibition zone to Escherichia coli and Staphylococcus aureus were 5.5 mm and 6.5 mm,respectively,which showed good antibacterial properties.This work provides an effective way to develop a multi-effect high-value-added bamboo activated carbon material.
作者
李世杰
王智辉
代琳心
李振瑞
王佳军
马建锋
刘杏娥
LI Shijie;WANG Zhihui;DAI Linxin;LI Zhenrui;WANG Jiajun;MA Jianfeng;LIU Xing'e(Key Laboratory of Bamboo and Rattan Science and Technology,International Centre for Bamboo and Rattan,Beijing 100102,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2022年第S01期62-67,共6页
Materials Reports
基金
国际竹藤中心基本业务费项目(1632021001)
关键词
竹质活性炭
银
尿素改性
甲醛
抗菌性
bamboo activated carbon
silver
urea modified
formaldehyde
antibacterial property
