文献类型：期刊文献

中文题名：负载二氧化钛竹活性炭的制备及其性能的研究

英文题名：Preparation and Application of TiO_2 Bamboo Activated Carbon

作者：崔丹丹[1] 蒋剑春[1] 孙康[1] 卢辛成[1]

第一作者：崔丹丹

机构：[1]中国林业科学研究院林产化学工业研究所；生物质化学利用国家工程实验室；国家林业局林产化学工程重点开放性实验室；江苏省生物质能源与材料重点实验室,江苏南京210042

年份：2011

卷号：45

期号：1

起止页码：29-32

中文期刊名：生物质化学工程

外文期刊名：Biomass Chemical Engineering

基金：“十一五”国家科技支撑计划资助(2009BADB1B03);林业公益性行业专项(201004051)

语种：中文

中文关键词：竹活性炭;二氧化钛;光催化;甲醛

外文关键词：bamboo activated carbon; titanium dioxide; photocatalysis; formaldehyde

分类号：TQ424

摘要：以竹子为原料,通过磷酸活化法制备了一系列活性炭,考察其亚甲基蓝吸附值和焦糖脱色率,选择其中2项值都比较高的试样,通过溶胶-凝胶法制备负载型二氧化钛/竹活性炭光催化剂(TiO2/BAC),并用其去除水溶液中的甲醛,以甲醛去除率为指标考察TiO2/BAC的性能。结果表明,在浸渍比3∶1,升温速率10℃/min,活化温度400℃,活化时间40 min的工艺条件下得到的竹活性炭,比表面积大,大、中孔非常丰富。以上述条件下制得的活性炭所制备的TiO2/BAC对水溶液中甲醛的去除效果非常明显:投加量为1.5 g时,800 mL初始浓度为5 mg/L的甲醛水溶液,在17 W紫外灯光照射的条件下,反应480 min时甲醛去除率可达到84.28%。对比了单一TiO2、单一竹活性炭、竹活性炭与TiO2简单混合、TiO2/BAC去除甲醛的效果,结果表明TiO2/BAC去除甲醛的过程中,TiO2与竹活性炭二者呈现明显的协同作用。
Activated carbons from bamboo were produced by using phosphoric acid activation method,and their methylene blue adsorption and caramel decoloration rate were investigated.The activated carbon was modified by loading TiO2 catalyst via sol-gel method to improve methylene blue adsorption and caramel decoloration rate.According to the removal of formaldehyde in aqueous solution.The performance of composite catalyst was discussed.Results show that bamboo activated carbon which was activated under 400 ℃ for 40 min with impregnation ratio 3∶1 and heating rate 10 ℃/min,has large surface area and is rich in macro-/meso-pores.Effects of formaldehyde removal rate of TiO2/BAC was distinct.The results show that when the prepared composite photocatalyst 1.5 g,aqueous solution 800 mL,initial concentration 5 mg/L,exposed in 17 W UV-light and the photo-catalytic reaction continued for 480 min,the formaldehyde removal rate was up to 84.28 %.