Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (9): 1668-1671. Previous Articles     Next Articles

Original Articles

利用Cr_2O_3-LaCoO_3-Pt纳米材料催化发光测定大气中的氨分子

饶志明;施进军;张新荣   

  1. 清华大学化学系.北京(100084)
  • 出版日期:2002-09-15 发布日期:2002-09-15

Study of Cataluminescence Characteristics of NH_3 on the Surface of Nanosized Materials

Rao Zhiming;Shi Jinjun;Zhang Xinrong   

  1. Department of Chemistry, Tsinghua University.Beijing(100084)
  • Online:2002-09-15 Published:2002-09-15

Chemiluminescence (CL) behavior of NH_3 upon catalytic oxidation on Cr_2O_3 + LaCoO_3 + Pt nanoparticles was studied. The results showed that the nanosized materials could be used for selective determination of NH_3 molecules in gas. Under the optimized conditions, the linear range of CL intensity versus NH_3 concentration is 15.0 * 10~(-6) to 750 * 10~(-6) (r = 0.995), with a detection limit of 4.0 * 10~(-6).

Key words: CHROMIUM OXIDE, LANTHANUM OXIDE, COBALT OXIDE, NANOPHASE MATERIALS, CHEMILUMINESSENCE, AMMONIA

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