高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (S1): 25.

• 研究论文 • 上一篇    下一篇

Quartz Crystal Microbalance Study of Q-State PbS Particle Formation in Lead Arachidate Langmuir-BIodgett Films

WU Yu-qing, XU Wei-qing, ZHAO Bing, TAO Yan-chun, WU Ying, LI Bo-fu   

  1. Key Lab. For Molecular Spectra and Structure, Jilin University, Changchun, 130023, P. R. China
  • 收稿日期:1995-08-04 出版日期:1995-12-31 发布日期:1995-12-31
  • 基金资助:

    National Natural Science Foundation of China

Quartz Crystal Microbalance Study of Q-State PbS Particle Formation in Lead Arachidate Langmuir-BIodgett Films

WU Yu-qing, XU Wei-qing, ZHAO Bing, TAO Yan-chun, WU Ying, LI Bo-fu   

  1. Key Lab. For Molecular Spectra and Structure, Jilin University, Changchun, 130023, P. R. China
  • Received:1995-08-04 Online:1995-12-31 Published:1995-12-31
  • Supported by:

    National Natural Science Foundation of China

摘要:

The formation of Q-state PbS particle in lead arachidate (PbAr) Langmuir-Blodgett films has been monitored using the quartz crystal microbalance (QCM) measurement. The study showed that the mass uptake of PbAr films with different thicknesses on exposure to hydrogen sulfide was consistent with that expected for the quantitative conversion of Pb2+ in the films to PbS and the corresponding conversion of PbAr to arachidic acid. Mass uptake measurement on PbAr films extensively exposed to H2S gas showed the arachidic acid molecules left after Q-state particle formation could be quantitatively converted to PbAr by immersing the film in a stirred aqueous solution containing lead ions. Subsequent reexposure of the film to H2S increases the mole fraction of PbS in the film.

关键词: Quartz crystal microbalance (QCM), Q-satate particle, LB film

Abstract:

The formation of Q-state PbS particle in lead arachidate (PbAr) Langmuir-Blodgett films has been monitored using the quartz crystal microbalance (QCM) measurement. The study showed that the mass uptake of PbAr films with different thicknesses on exposure to hydrogen sulfide was consistent with that expected for the quantitative conversion of Pb2+ in the films to PbS and the corresponding conversion of PbAr to arachidic acid. Mass uptake measurement on PbAr films extensively exposed to H2S gas showed the arachidic acid molecules left after Q-state particle formation could be quantitatively converted to PbAr by immersing the film in a stirred aqueous solution containing lead ions. Subsequent reexposure of the film to H2S increases the mole fraction of PbS in the film.

Key words: Quartz crystal microbalance (QCM), Q-satate particle, LB film

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