活性炭/二氧化锰复合材料的制备及性能研究  

Preparation and properties of activated carbon/manganese dioxide composites

作　　者：郑婵 方世国 李巍 占礼万 ZHENG Chan;FANG Shiguo;LI Wei;ZHAN Liwan(School of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350118,China;Fujian Yuanli Active Carbon Co.,Ltd.,Nanping 353000,China)

机构地区：[1]福建工程学院材料科学与工程学院,福建福州350118 [2]福建元力活性炭股份有限公司,福建南平353000

出　　处：《福建工程学院学报》2019年第1期1-6,共6页Journal of Fujian University of Technology

基　　金：福建省高校产学合作科技重大专项(2015N007)

摘　　要：采用水热法,以果壳活性炭为载体,制备活性炭(AC)/二氧化锰(MnO_2)纳米线复合材料。采用X射线衍射仪(XRD)、场发射扫描电子显微镜(SEM)、比表面及孔径分析仪、同步热分析仪(TG)以及紫外可见吸收光谱(UV/Vis)对所得材料的组成、形貌和结构进行表征,并对其光催化性能进行研究。结果表明:采用水热法可实现活性炭与MnO_2的有效复合。在复合材料中,MnO_2纳米线多以无定形态的形式存在且尺寸均一,将活性炭有效胶结在一起,从而使得活性炭比表面积和孔隙率降低,但其孔径大小保持不变。光催化实验结果表明,AC/MnO_2复合材料对于有机染料具有明显、高效的降解效果,对亚甲基蓝的降解主要是吸附和光催化两者协同效应的结果。该结果拓展了活性炭在光催化领域的应用。Activated carbon (AC)/manganese dioxide (MnO2) nanowire composites were prepared by the hydrothermal method with shell activated carbon as substrate.The composition,morphology and structure of the obtained composites were characterized by X-ray diffractometer (XRD),field emission scanning electron microscope (SEM),specific surface and pore size analyzer,synchronous thermal analyzer (TG) and UV-Vis absorption spectroscopy (UV/Vis).Meanwhile,their photocatalytic properties were also studied.Results show that the effective combination of activated carbon and MnO2 can be achieved by the hydrothermal method.In the composite material,the MnO2 nanowires are mostly found amorphous and uniform in size,which effectively intersect the activated carbon together,thus reducing the specific surface area and porosity of the activated carbon,but keeping the pore size unchanged.Results of photocatalysis experiments show that AC/MnO2 composites have obvious and efficient degradation effects on organic dyes.The degradation of methylene blue is mainly caused by the synergistic effect of adsorption and photocatalysis.This result expands the application of activated carbon in the field of photocatalysis.

关 键 词：果壳活性炭 二氧化锰 水热法 比表面积 光催化性能 

分 类 号：TB383[一般工业技术—材料科学与工程]