文献类型：期刊文献

中文题名：铂、氮共掺杂光催化剂TiO_2/BAC的制备及其性能研究

英文题名：Preparation and Photocatalysis Performance of Pt,N Co-doped Bamboo Activated Carbon Supported by TiO_2

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

年份：2012

卷号：32

期号：1

起止页码：55-60

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

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

语种：中文

中文关键词：竹活性炭;共掺杂;Pt/N/TiO2/BAC;甲醛

外文关键词：bamboo activated carbon ; co-doping; Pt/N/TiO2/BAC ; formaldehyde

分类号：TQ351;TQ424.1

摘要：采用竹活性炭(BAC)作为载体,以尿素为氮源,采用溶胶-凝胶法掺杂了N元素的TiO2/BAC,然后通过等体积浸渍法负载Pt,制备了铂、氮共掺杂型光催化剂(Pt/N/TiO2/BAC)。样品的N2吸附、XRD、FT-IR、XPS等分析结果表明:掺杂后BAC的比表面积、比孔容积等均有所下降,对中孔及大孔影响更明显;Pt、N共掺杂不改变TiO2的晶型类型,有利于TiO2在活性炭表面分散,N掺杂使晶粒粒径减小,Pt掺杂对晶粒粒径影响不明显;N、Pt通过化学键与TiO2相结合,实现了晶格掺氮,在催化剂表面形成了表面活性位Pt0。样品TiO2/BAC、Pt/TiO2/BAC、N/TiO2/BAC、Pt/N/TiO2/BAC在紫外光、氙灯照射下对水溶液中甲醛的降解研究结果表明:N掺杂拓宽了催化剂的光吸收范围,Pt掺杂增强了TiO2的光催化活性;Pt/N/TiO2/BAC的甲醛去除率达到TiO2/BAC的2.6倍,并且具有良好的分离性能。
After loading of TiO2 on bamboo activated carbon （BAC） through sol-gel method, elements of Pt and N were doped on the composite to produce Pt/N/TiO2/BAC. N2 adsorption, XRD, FT-IR and XPS analysis have been used to characterize these samples. Analysis results showed that doping method can reduce the BET surface area and the pore volume; Pt, N co-doping can not change the crystal type, but it is helpful for the scattering of TiO2 particles on BAC surface ; N doping inhibited anatase changing to tutile, but lessened agglomeration; N entered into the TiO2 lattice, Pt made more active sites and there were oxygen va- cancies on the catalyst surface. The photocatalytic degradation of formaldehyde aqueous solution, using TiOJBAC, Pt/TiO2/ BAC, N/TiOJBAC and Pt/N/TiO2/BAC respectively, under UV lamp and xenon lamp was also investigated. The results showed that co-doping of Pt and N not only widened the light absorption width but also enhanced photocatalytic activity. The fom- aldehyde degradation rae by Pt/N/TiOJBAC and 2.6 times of that by TiO2/BAC under similar conditions Pt/N/TiO2/BAC had good property of separation.