采用均匀沉淀法制备不同锗掺杂浓度的纳米二氧化钛(TiO2);为了研究掺杂浓度与粉体活性之间的关系,针对化学毒剂(CWAs)模拟剂2-氯乙基乙基硫醚(2-CEES)和甲基膦酸二甲酯(DMMP)开展光催化消毒实验,并用动力学方程拟合实验结果;通过XRD、UV-Vis、BET、BJH、SEM和TEM等技术对样品进行表征,分析锗掺杂对TiO2结构及性能的影响;综合考虑溶剂的毒性、挥发性、可燃性和溶解性等因素,以氢氟醚(HFE)作为分散溶剂,研究模拟太阳光下Ge-TiO2和HFE混合体系对芥子气(HD)、梭曼(GD)和维埃克斯(VX)的消毒性能.结果表明:适量锗掺杂不会改变纳米TiO2的晶型结构,可以减小晶粒尺寸,增大比表面积,增强光利用率,提高消毒活性;相较于直接使用粉体消毒,混合体系的消毒效率明显提高;在模拟太阳光下,最佳锗掺杂浓度(6.24wt％)样品与HFE-458 (HCF2CF2CH2OCF2CF2H)组成的混合体系与三种化学毒剂反应60 rnin的降解率分别为:HD 98.73％、GD 100％、VX 100％.
参考文献
| [1] | George W. Wagner;Qiang Chen;Yue Wu.Reactions of VX, GD, and HD with Nanotubular Titania[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200831(31):11901-11906. |
| [2] | Stengl V;Marikova M;Bakardjieva S;Subrt J;Oplustil F;Olsanska M.Reaction of sulfur mustard gas, soman and agent VX with nanosized anatase TiO2 and ferrihydrite[J].Journal of Chemical Technology & Biotechnology,20057(7):754-758. |
| [3] | Keita Sato;Tsutomu Hirakawa;Asuka Komano.Titanium dioxide photocatalysis to decompose isopropyl methylphosphonofluoridate (GB) in gas phase[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20113/4(3/4):316-322. |
| [4] | Igor N. Martyanov;Kenneth J. Klabunde.Photocatalytic oxidation of gaseous 2-chloroethyl ethyl sulfide over TiO{sub}2[J].Environmental Science & Technology: ES&T,200315(15):3448-3453. |
| [5] | Andreas Mattsson;Christian Lejon;Vaclav Stengl.Photodegradation of DMMP and CEES on zirconium doped titania nanoparticles[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20093/4(3/4):401-410. |
| [6] | Dimitar A. Panayotov;John R. Morris.Thermal Decomposition of a Chemical Warfare Agent Simulant (DMMP) on TiO2: Adsorbate Reactions with Lattice Oxygen as Studied by Infrared Spectroscopy[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200935(35):15684-15691. |
| [7] | Vaclav Stengl;Snejana Bakardjieva.Molybdenum-Doped Anatase and Its Extraordinary Photocatalytic Activity in the Degradation of Orange II in the UV and vis Regions[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201045(45):19308-19317. |
| [8] | Lars Osterlund;Vaclav Stengl;Andreas Mattsson.Effect of sample preparation and humidity on the photodegradation rate of CEES on pure and Zn doped anatase TiO2 nanoparticles prepared by homogeneous hydrolysis[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20091/2(1/2):194-203. |
| [9] | Vaclav Stengl;Jana Bludska;Frantisek Oplustil;Tomas Nemec.Mesoporous titanium-manganese dioxide for sulphur mustard and soman decontamination[J].Materials Research Bulletin,201111(11):2050-2056. |
| [10] | ?tengl, V.;Oplu?til, F.;Němec, T..In ~(3+)-doped TiO _2 and TiO _2/In _2S _3 Nanocomposite for photocatalytic and stoichiometric degradations[J].Photochemistry and Photobiology: An International Journal,20122(2):265-276. |
| [11] | Vladimir Blinov;Konstantin Volchek;Wenxing Kuang.Two-Stage Decontamination of Organophosphorus Compounds on Sensitive Equipment Materials[J].Industrial & Engineering Chemistry Research,20134(4):1405-1413. |
| [12] | 韩世同;习海玲;王绪绪;付贤智.气相中芥子气模拟剂2-CEES在SO24-/TiO2上的光催化消除[J].环境科学,2005(3):130-134. |
| [13] | 郑禾;钟近艺;韩世同;陈新启;闵崎.LaVO4／TiO2光催化复合材料对芥子气模拟剂2-氯乙基乙基硫醚的降解性能[J].环境化学,2014(6):999-1002. |
| [14] | 周婧;赵高凌;韩高荣.锗掺杂二氧化钛薄膜的溶胶凝胶法制备和性能研究[J].功能材料,2009(12):2000-2003. |
| [15] | Huang DG;Liao SJ;Liu JM;Dang Z;Petrik L.Preparation of visible-light responsive N-F-codoped TiO2 photocatalyst by a sol-gel-solvothermal method[J].Journal of Photochemistry and Photobiology, A. Chemistry,20063(3):282-288. |
| [16] | Kaiser R;Kulczyk A;Rich D;Willey RJ;Minicucci J;MacIver B.Effect of pore size distribution of commercial activated carbon fabrics on the adsorption of CWA simulants from the liquid phase[J].Industrial & Engineering Chemistry Research,200719(19):6126-6132. |
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