TiO_(2)/咖啡渣炭复合材料的制备及光催化降解苯酚  

Preparation of TiO_(2)/coffee residue carbon composites and photocatalytic degradation of phenol

作　　者：黄建秀 李倩 李涛[1] 吴明慧 边一凡 李惠娟[1] HUANG Jianxiu;LI Qian;LI Tao;WU Minghui;BIAN Yifan;LI Huijuan(National Local Joint Engineering Research Center for Efficient Utilization of Forestry Biomass Resources Technology,College of Materials and Chemical Engineering,Southwest Forestry University,Kunming 650224,China)

机构地区：[1]林业生物质资源高效利用技术国家地方联合工程研究中心,西南林业大学材料与化学工程学院,云南昆明650224

出　　处：《应用化工》2024年第11期2645-2649,共5页Applied Chemical Industry

基　　金：云南省农业联合专项基金(2018FG001-051);林业生物质资源高效利用技术国家地方联合工程研究中心开放基金(2023-GC03)。

摘　　要：以废弃咖啡渣为原料,钛酸四正丁酯为前驱体,采用溶胶-凝胶法制备TiO_(2)/咖啡渣炭(TiO_(2)/C)复合材料用以苯酚污染物的降解。通过XRD和SEM对材料进行物相表征。结果表明,当TiO_(2)/C复合材料中TiO_(2)负载量为60%,600℃焙烧2 h,pH=6时,TiO_(2)/C复合材料具有优越的光催化活性,紫外光下,2 g/L的复合材料对10 mg/L苯酚,反应240 min的降解率达到95.3%,光催化过程符合准一级动力学模型。Titanium dioxide/coffee residue carbon(TiO_(2)/C)composites were prepared by sol-gel method using waste coffee residue as raw material and tetrabutyl titanate precursor for the degradation of phenol pollutants.TiO_(2)/C Composites were characterized by XRD and SEM.The results show that:when TiO_(2)/C composites was 60%,it was calcined at 600℃for 2 h and pH=6,TiO_(2)/C composites showed superior photocatalytic activity.Under UV light,the degradation rate of 10 mg/L phenol was 95.3%after reaction of 2 g/L catalyst for 240 min,the photocatalytic process conforms to the quasi-first-order kinetic model.

关 键 词：二氧化钛 咖啡渣炭 TiO_(2)/C 光催化 苯酚 

分 类 号：TQ424[化学工程] TQ579[环境科学与工程—环境工程] X703