载钴生物质碳复合材料的制备及其催化性能研究
Preparation of cobalt oxide-loaded three-dimensional bulk porous biomass carbon composite and study on its catalytic performance
以小麦粉为原料,采用生物发酵法获得疏松多孔的团状生物质碳前驱体,热解碳化形成三维多孔碳材料。通过简单的浸渍-煅烧法制得三维块体状载钴生物质碳材料。通过XRD、FT-IR、TG-DTA、SEM、TEM等手段对产物进行了表征。结果表明,钴氧化物成功分散负载于三维生物质碳表面。制备的三维载钴生物质碳催化PMS产生非自由基和自由基活性基团对废水中甲基橙(MO)染料具有良好的降解活性。其中非自由基 1O2对MO的降解过程起主导作用,其次分别是·O2、SO4·-和 ·OH。载钴三维多孔生物质碳复合催化材料具有优良的循环再利用性。
Loose porous dough,as a precursor for biomass carbon,is obtained through biological fermentation method with flour as raw material.The dough is shaped by steam heating,and becomes three-dimensional porous carbon material via pyrolysis and carbonization,which is processed into three dimensional bulk cobalt-carrying biomass carbon materials through a simple impregnation-calcination method.The materials obtained are characterized by means of XRD,FT-IR,TG-DTA,SEM and TEM.Results show that Co3O4 is successfully dispersed on the surface of three-dimensional biomass carbon.The prepared 3D Co-carrying biomass carbon catalyzes PMS to produce non-free radical and free radical active groups,which has good degradation activity for methyl orange dye in wastewater.Non-free radical 1O2 plays a leading role in the degradation of methyl orange,followed by ·$\text{O}_{2}^{-}$,SO4·- and ·OH.Moreover,the prepared cobalt-carrying three-dimensional porous biomass carbon composite catalytic material has excellent recycling property.
生物发酵法 / 催化降解 / 载钴生物质碳 / 浸渍 / 小麦粉
biological fermentation / catalytic degradation / cobalt-carrying biomass carbon / impregnation / flour
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生物膜法水质净化及利用技术教育部工程研究中心开放课题(22378417)
安徽省大学生创新创业训练计划项目(202410360207)
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