콘텐츠 본문
논문 해외 국제전문학술지(SCI급) EFFECT OF THE ADDITION MODE OF CARBON NANOTUBES FOR THE PRODUCTION OF CHITOSAN HYDROGEL CORE-SHELL BEADS ON ADSORPTION OF CONGO RED FROM AQUEOUS SOLUTION
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2011-03
- 저자명 우승한
- 학술지명 BIORESOURCE TECHNOLOGY
- 발행처명 ELSEVIER SCI LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
논문 초록 (Abstract)
The adsorption performance of chitosan (CS) hydrogel beads (CSBs) generated by sodium dodecyl sulfate (SOS) gelation with multi-wal led carbon nanotube (CNT) impregnation was investigated for Congo red removal as a model anionic dye. CNT-impregnated CSBs were prepare d by four different strategies for dispersing CNTs: (a) in CS solution (CSBN1), (b) in SOS solution (CSBN2), (c) in CS solution containi ng cetyltrimethylammonium bromide (CTAB) (CSBN3), and (d) in SDS sol ution for gelation with CTAB-containing CS solution (CSBN4). It was obs erved from FE-SEM study that depending on nature of CNT dispersion, CNT s were found on the outer surface of CSBN2 and CSBN4 only. The adsorptio n capacity of the CSBs varied with the strategy used for CNT impregnation, and CSBN4 exhibited the highest maximum adso rption capacity (375.94 mg/g) from the Sips model. The lowest Sip s maximum adsorption capacity by CSBN3 (121.07 mg/g) suggested signi ficant blocking of bindingsites of CS by CNT impregnation. (C) 2 011 Elsevier Ltd. All rights reserved.
