期刊
BULLETIN OF MATERIALS SCIENCE
卷 40, 期 6, 页码 1179-1187出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-017-1464-3
关键词
Bamboo charcoal/chitosan/polymethacrylate; composite beads; characterization; pH point of zero charge; creatinine; column adsorbent
资金
- Ministry of Science and Technology, Taiwan [NSC101-2632-M-033-001-MY2, NSC102-2632-M-033-001-MY3]
- Commission on Higher Education (CHED)
- sandwich programme
Preparation and characterization of a low-cost, novel steam-activated bamboo charcoal (BC) and poly(methacrylate) (PMAA) bound with chitosan (CTS) to form chitosan/bamboo charcoal/poly(methacrylate) (CTS/BC/PMAA) composite beads is reported for the first time in this paper. The characteristics are revealed by techniques such as X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC), scanning electron microscopy (SEM), Brunauer Emmett Teller (BET), solution pH and pH at point of zero charge . The composite beads possessed a dominant acidic surface group of 0.663 mmol , as revealed by Boehm titration method. This acidity was confirmed by its solution pH of 6.46; of 6.70 and increase in oxygen surface via XPS analysis. adsorption-desorption isotherms at 77 K of the beads revealed high BET surface area (SA) of 681.15 . Langmuir model affords a SA of 773.34 . SEM showed the microporous nature of the composite beads. The properties of CTS/BC/PMAA composite beads were compared to CTS/BC and neat BC. Thermal stability and successful coating of 5.1 wt% of PMAA and 6.8 wt% of CTS to CTS/BC/PMAA beads were shown by DSC and TGA analyses. The composite beads showed low carbon particle released at pH 7.4 and 6.8. Furthermore, dynamic adsorption revealed that CTS/BC/PMAA composite beads can be used to capture a polar substance, such as creatinine.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据