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玻璃弹簧负载TiO2光催化降解甲醛的影响因素

彭人勇 刘淑娟 丁禄彬

彭人勇, 刘淑娟, 丁禄彬. 玻璃弹簧负载TiO2光催化降解甲醛的影响因素[J]. 环境科学研究, 2009, 22(4): 490-495.
引用本文: 彭人勇, 刘淑娟, 丁禄彬. 玻璃弹簧负载TiO2光催化降解甲醛的影响因素[J]. 环境科学研究, 2009, 22(4): 490-495.
PENG Ren-yong, LIU Shu-juan, DING Lu-bin. Factors Influencing Formaldehyde Photocatalytic Degradation by Titanium Dioxide Deposited on Glass Springs[J]. Research of Environmental Sciences, 2009, 22(4): 490-495.
Citation: PENG Ren-yong, LIU Shu-juan, DING Lu-bin. Factors Influencing Formaldehyde Photocatalytic Degradation by Titanium Dioxide Deposited on Glass Springs[J]. Research of Environmental Sciences, 2009, 22(4): 490-495.

玻璃弹簧负载TiO2光催化降解甲醛的影响因素

基金项目: 国家自然科学基金项目(40601062)

Factors Influencing Formaldehyde Photocatalytic Degradation by Titanium Dioxide Deposited on Glass Springs

  • 摘要: 利用自制间歇式光催化气体反应器体系作为反应场所,以玻璃弹簧负载TiO2溶胶作催化剂,在紫外光照射下降解室内污染气体甲醛,探讨了催化剂的酸度、反应器内湿度、甲醛气体浓度和反应时间等因素对甲醛降解率的影响.结果表明:玻璃弹簧负载TiO2并经pH5的蒸馏水酸浸后作催化剂对甲醛的降解效果最好,90 min内降解率达到57.26%;反应器内的湿度约为50%时甲醛降解率最高,反应90 min时达到82.20%;在0.46~8.10 mg/m3内,初始ρ(甲醛)为5.51 mg/m3时的降解率最高,150 min内达95.10%;延长反应时间,甲醛降解率上升幅度逐渐减小;通过计算降解后甲醛的残余量可知,TiO2光催化方法可以有效降解甲醛,并能使0.46 mg/m3以内的ρ(甲醛)在150 min内达到国家标准.

     

  • [1] COGGON D, HARRIS E C, POOLE J, et al. Extended follow-up of a cohort of British chemical workers exposed to formaldehyde[J]. J Natl Cancer Inst, 2003,95 : 1608-1615.
    [2] HAUPTMAN M,LUBIN J H,ATEWART P A,et al.Mortality fromlympho hematopoietic malignancies among workers in formaldehyde industries[J].J Natl Cancer Inst,2003,95:1615-1623.
    [3] VORONTSOV A V,DUBOVITSKAYA V P.Selectivity of photocatalytic oxidation of gaseous ethanol over pure and modified TiO2[J].Cata1,2004,221(1):102-109.
    [4] SANO T,NEGISHI N,UCHINO K,et al.Photocatalytic degradation of gaseous acetaldehyde on TiO2 with photodeposited metals and metal oxides[J].Photochem Photobiol A:Chem,2003,160(1/2):93-98.
    [5] AMAMA P B,ITOH K,MURABAYASHI M.Photocatalytic degradation of trichloethylene in dry and humid atmospheres:role of gasphase reactions[J].Mol Catal A:Chem,2004,217(1/2):109-115.
    [6] 张运乾,刘震炎,施建伟,等.真空紫外灯动态降解空气中低浓度甲醛的研究[J].环境污染治理技术与设备,2006,7(2):130-133.
    [7] TANAKA Yoshimi,SUGIMOTO Kenichi,SHIMIZU Akiko,et al.New test method for performance of photocatalytic materials on removal of formaldehyde using continuous gas flow reactor[J].Aichi-ken Sangyo Gijutsu KenkyushoKenkyu Hokoku,2004,3:10-13.
    [8] SHANG Jing,YAO Wenqing,ZHU Yongfa,et al.Structure andphotocatalytic performances of glass/SnO2/TiO2 interface composite film[J].Applied Catalysis A:General,2004,257(1):25-32.
    [9] DONG Genhuang,SHI Junliao,SHUI Qingquan,et al.Preparationof anatase F doped TiO2 sol and its performance for photodegradation of formaldehyde[J].Materials Science,2007,42(19):8193-8202.
    [10] 丁震,陈晓东,林萍,等.纳米TiO2对气相中甲醛光催化降解的研究[J].环境科学研究,2006,19(4):75-79.
    [11] YOKO Ohba,YUYA Baba,ETSUO Sakai,et al.Porous anatase layer formed on titanium substrate through hydrothermal processes[J].Materials Science,2008,3(7):2163-3170.
    [12] 陈强,彭人勇.掺磷二氧化钛的制备及其光催化性能研究[J].广州化学,2007,32(3):36-39.
    [13] 杨丽珍,周震,郝艳萍,等.TiO2纳米颗粒光催化降解甲醛的影响因素[J].北京印刷学院学报,2006,14(1):41.
    [14] 鹿院卫,马重芳,夏国栋,等.室内污染物甲醛的光催化氧化降解研究[J].太阳能学报,2004,25(4):545.
    [15] 杨庆,郭奋,邢颖,等.TiO2多孔性薄膜光催化降解低浓度甲醛[J].环境科学,2005,26(4):35-39.
    [16] 陈利群,王丹,胡志新.居室装修后空气污染状况调查及危害分析[J].现代预防医学,2007,34(2):2290-2298.
    [17] 王芳.新装修居室内空气中甲醛污染状况调查分析[J].中国卫生检验杂志,2007,17(3):514-515.
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出版历程
  • 收稿日期:  2008-08-22
  • 修回日期:  2008-09-18
  • 刊出日期:  2009-04-25

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