Nanocomposite carbon-PDMS membranes for gas separation

SENSORS AND ACTUATORS B-CHEMICAL

卷:161

Article

Nour, Majid¹  Berean, Kyle¹  Griffin, Matthew J.¹  Matthews, Glenn I.¹  Bhaskaran, Madhu¹  Sriram, Sharath¹  Kalantar-Zadeh, Kourosh¹ 

[1] RMIT Univ, Sch Elect & Comp Engn, Melbourne, Vic, Australia

关键词: Polydimethylsiloxane (PDMS);    Carbon black (CB);    Nanocomposite membrane;    Hydrogen (H-2);    Methane (CH4);    Selectivity;    Separation;    FTIR;    Raman;   

DOI  :  10.1016/j.snb.2011.11.079

来源: Elsevier

【 摘 要 】

Polydimethylsiloxane (PDMS) composites containing variable weight amounts of carbon black (CB) have been synthesized as membranes to evaluate the effect of CB concentration on gas selectivity and separation. The membranes were used in conjunction with a commercial semiconducting methane (CH4) gas sensor that had a strong cross-talk with hydrogen (H-2) gas. The selectivity of the CB-PDMS composite membranes for gas separation was tested using CH4 and H-2. It was found that at 6 wt% of CB in PDMS, the permeability of CH4 was significantly and selectively attenuated through the composite membrane. This work demonstrates that CB is an effective additive for tuning H-2/CH4 gas selectivity of the composite membranes. The selectivity is attributed to a chemical transition occurring with increasing CB doping, which was observed by vibrational spectroscopy measurements. (C) 2011 Elsevier RV. All rights reserved.

【 授权许可】

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