开发与应用

石墨相氮化碳/TiO2型光催化沥青性能及应用研究

展开
  • 1.重庆交通大学土木工程学院,重庆400074;
    2.重庆交通大学材料科学与工程学院,重庆400074
邓梅(1964-),女,博士研究生,主要从事光催化复合材料制备和应用研究,E-mail:2695661545@qq.com。

收稿日期: 2020-01-08

  修回日期: 2020-12-17

  网络出版日期: 2021-05-07

基金资助

国家自然科学基金(5167081766);材料工程重庆市研究生联合培养基地基金项目(201907);重庆市研究生科研创新项目(2018S014)

Performance and application of g-C3N4/TiO2 photocatalytic asphalt

Expand
  • 1. School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074;
    2. School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074

Received date: 2020-01-08

  Revised date: 2020-12-17

  Online published: 2021-05-07

摘要

制备出高效的石墨相氮化碳/二氧化钛(g-C3N4/TiO2)复合光催化剂,将其加入到基质沥青中形成 g-C3N4/TiO2型光催化沥青,利用红外光谱(FT-IR)和原子力显微镜(AFM)表征手段研究g-C3N4/TiO2对沥青性能的影响;然后将g-C3N4/TiO2材料用于单层碎石封层去除汽车尾气中的一氧化氮(NO)气体。降解实验结果表明:g-C3N4/TiO2对NO的降解效率为82.47%。FT-IR测试发现g-C3N4/TiO2和沥青之间的吸附抑制了羧基(CO)的形成,导致了亚砜基(SO)光谱强度为老化光催化沥青>老化沥青>基质沥青。AFM测试表明g-C3N4/TiO2光催化剂的加入使沥青表面更为光滑。应用研究证明在碎石封层中加入138g/m2的光催化剂对NO降解效率达到13.96%。

本文引用格式

邓梅, 单柏林, 苗成成, 唐伯明, 杨晓宇, 曹雪娟 . 石墨相氮化碳/TiO2型光催化沥青性能及应用研究[J]. 化工新型材料, 2021 , 49(4) : 224 -227 . DOI: 10.19817/j.cnki.issn1006-3536.2021.04.049

Abstract

The high-efficient g-C3N4/TiO2 composite photocatalyst was prepared,and added to matrix asphalt to form g-C3N4/TiO2 photocatalyst asphalt.The effect of g-C3N4/TiO2 on the performance of the asphalt were studied by FT-IR and AFM characterization methods.Furthermore,g-C3N4/TiO2 asphalt was added into chip seal to remove nitric oxide (NO) in automobile exhaust.The degradation experiment results showed that NO degradation efficiency of pure material was 82.47%,which was about 2 times compared with TiO2.FT-IR test showed that adsorption between g-C3N4/TiO2 and asphalt inhibited the formation of CO group.However,for the strength of sulfoxide base:aging photocatalytic asphalt>aging asphalt>matrix asphalt.AFM test showed that addition of g-C3N4/TiO2 photocatalyst made a more smoother asphalt surface.The results showed that the best NO degradation efficiency was 13.96% when the amount of photocatalyst was 138g/m2.

参考文献

[1] Ramirez A M,Demeestere K,De Belie N,et al.Titanium dioxide coated cementitious materials for air purifying purposes:preparation,characterization and toluene removal potential[J].Building and Environment,2010,45(4):832-838.
[2] Ballari M,Yu Q,Brouwers H.Experimental study of the NO and NO2 degradation by photocatalytic ally active concrete[J].Catalysis Today,2011,161(1):175-180.
[3] Ballari M,Hunger M,Hüsken G.Modelling and experimental study of the NOx photocatalytic degradation employing concrete pavement with titanium dioxide[J].Catalysis Today,2010,151(1):71-76.
[4] Ballari M,Brouwers H.Full scale demonstration of air-purifying pavement[J].Journal of Hazardous Materials,2013,254(255):406-414.
[5] Ballari M M,Brouwers H J H.Full scale demonstration of air-purifying pavement[J].Journal of Hazardous Materials,2013,254-255:406-414.
[6] 钱春香.路面材料负载纳米二氧化钛光催化降解氮氧化物[J].硅酸盐学报,2005,33(4):422-427.
[7] 陈晨.水泥路面负载纳米TiO2光催化降解NOx研究[D].重庆:重庆交通大学,2015.
[8] 谭忆秋.可降解汽车尾气材料在沥青路面中的应用性能评价[J].中国公路学报,2010,23(6):21-27.
[9] 覃峰,包惠明.同步碎石封层脱石率的试验研究[J].路基工程,2008(5):111-113.
[10] 黄晓秋.同步碎石封层技术在云南国省道干线公路养护中的应用研究[D].重庆:重庆交通大学,2014.
[11] 郭玉伟.SBS改性乳化沥青用于同步碎石上封层的研究[D].天津:河北工业大学,2012.
[12] Tan Y,Guo M.Micro- and nano-characteration of interaction between asphalt and filler[J].Journal of Testing and Evaluation,2014,42(5):1089-1097.
[13] Marsac P,Pierard N,Porot L.Potential and limits of FT-IR methods for reclaimed asphalt characterization[J].Materials and Structures,2014,47:1273-1286.
Options
文章导航

/