Abstract: Grapheme oxides (GO) are prepared by using graphite as raw material.Then TiO2-GO nanocomposites are prepared by hydrothermal method and characterized by FT-IR,XRD,TEM,RAMAN and EIS.The photocatalytic air purifier is designed and assembled by using TiO2-GO as photocatalyst and its photocatalytic performance is evaluated in the degradation of benzene,toluene and xylene.The results show that the addition of GO has enhanced the photocatalytic activity of purifier.After 100 minutes,the degradation rates of benzene,toluene and xylene all reach as high as 90%.
许世超, 董凯, 多浩, 朱天哲, 乔阳. 基于光催化技术的VOCs空气净化器的设计及研究[J]. 现代化工, 2018, 38(6): 117-121.
XU Shi-chao, DONG Kai, DUO Hao, ZHU Tian-zhe, QIAO Yang. Design and research of VOCs-containing air purifier based on photocatalytic technology. Modern Chemical Industry, 2018, 38(6): 117-121.
 先庭,杨建荣,王欣.室内空气品质研究现状与发展[J].暖通空调,2000,3(3):36-40.  朱迪迪,戴海夏,钱华.我国室内空气污染现状调研与分析[J].上海环境科学,2010,(4):174-180.  Du Z,Mo J,Zhang Y,et al.Benzene,toluene and xylenes in newly renovated homes and associated health risk in Guangzhou,China[J].Build Environ,2014,72(2):75-81.  Wolkoff P,Nielsen G D.Organic compounds in indoor air-their relevance for perceived indoor air quality?[J].Atmos Environ,2001,35(26):4407-4417.  Zhu J,Newhook R,Marro L,et al.Selected volatile organic compounds in residential air in the city of Ottawa,Canada[J].Environ Sci Technol,2005,39(11):3964-3971.  Ohura T,Amagai T,Shen X,et al.Comparative study on indoor air quality in Japan and China:Characteristics of residential indoor and outdoor VOCs[J].Atmos Environ,2009,43(40):6352-6359.  Hoffman M R,Martin S T,Choi W,et al.Environmental applications of semiconductor photocatalysis[J].Chem Rev,1995,95(1):69-96.  Fujishima A,Zhang X.Titanium dioxide photocatalysis:Present situation and future approaches[J].C R Chim,2006,9(5-6):750-760.  He F,Li J,Li T,et al.Solvothermal synthesis of mesoporous TiO2:The effect of morphology,size and calcination progress on photocatalytic activity in the degradation of gaseous benzene[J].Chemical Engineering Journal,2014,237(237):312-321.  Nakataa K,Fujishima A.TiO2 photocatalysis:Design and applications[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2012,13(3):169-189.  Hummers W S,Offeman R E.Preparation of graphitic oxide[J].J Am Chem Soc,1958,80(6):1339.  Zhang H,Lv X,Li Y,et al.P25-graphene composite as a high performance photocatalyst[J].ACS Nano,2010,4(1):380-386.  Shah M S A S,Park A R,Zhang K,et al.Green synthesis of biphasic TiO2-reduced graphene oxide nanocomposites with highly enhanced photocatalytic activity[J].ACS Applied Materials & Interfaces,2012,4(8):3893-3901.  Shi Q,Zhao W,Xie L,et al.Enhanced visible-light driven photocatalytic mineralization of indoor toluene via a BiVO4/reduced graphene oxide/Bi2O3 all-solid-state Z-scheme system[J].Journal of Alloys & Compounds,2016,662:108-117.  Yadav H M,Kim J S.Solvothermal synthesis of anatase TiO2-graphene oxide nanocomposites and their photocatalytic performance[J].J Alloys Compd,2016,688:123-129.  Liang D,Cui C,Hu H,et al.One-step hydrothermal synthesis of anatase TiO2/reduced graphene oxide nanocomposites with enhanced photocatalytic activity[J].J Alloys Compd,2014,582(1):236-240.  Zhang Y,Zhang N,Tang Z R,et al.Improving the photocatalytic performance of graphene-TiO2 nanocomposites via a combined strategy of decreasing defects of graphene and increasing interfacial contact[J].Chem Phys,2012,14(25):9167-9175.  Wu H,Fan J,Liu E,et al.Facile hydrothermal synthesis of TiO2 nanospindles-reduced graphene oxide composite with a enhanced photocatalytic activity[J].J Alloys Compd,2015,623:298-303.  Wang Y,Shi R,Lin J,et al.Significant photocatalytic enhancement in methylene blue degradation of TiO2 photocatalysts via graphene-like carbon in situ hybridization[J].Applied Catalysis B:Environmental,2010,100(1):179-183.  Akhavan O,Abdolahad M,Esfandiar A,et al.Photodegradation of grapheme oxide sheets by TiO2 nanoparticles after a photocatalytic reduction[J].The Journal of Physical Chemistry C,2010,114(30):12955-12959.  Kamat P V.Graphene-based nanoassemblies for energy conversion[J].J Phys Chem Lett,2011,2(3):242-251.  Zhang Y,Tang Z R,Fu X,et al.TiO2-graphene nanocomposites for gas-phase photocatalytic degradation of volatile aromatic pollutant:Is TiO2-graphene truly different from other TiO2-carbon composite materials?[J].ACS Nano,2010,4(12):7303-7310.  Teoh W Y,Scott J A,Amal R.Progress in heterogeneous photocatalysis:From classical radical chemistry to engineering nanomaterials and solar reactors[J].Phys Chem Lett,2012,3:629-639.