A novel adsorbent TEMPO-mediated oxidized cellulose nanofibrils modified with PEI: Preparation, characterization, and application for Cu(II) removal

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A novel adsorbent TEMPO-mediated oxidized cellulose nanofibrils modified with PEI: Preparation, characterization, and application for Cu(II) removal

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作者：Nan Zhang ; Guo-Long Zang ; Chen Shi ; Han-Qing Yu ; Guo-Ping Sheng ; ^{gpsheng@ustc.edu.cn" class="auth_mail" title="E-mail the corresponding author}
关键词：Cu(II) ; Isothermal titration calorimetry (ITC) ; Langmuir adsorption isotherm ; Polyethylenimine (PEI) modification ; TEMPO oxidized cellulose nanofibrils
刊名：Journal of Hazardous Materials
出版年：2016
出版时间：5 October 2016
年：2016
卷：316
期：Complete
页码：11-18
全文大小：1365 K

文摘

•: A cellulose nanofibril based adsorbent with abundant carboxyl/amino was prepared.
•: After modification by PEI, the Cu adsorption capacity of nanofibril increased.
•: TOCN-PEI has good Cu(II) removal ability and its maximum capacity was 52.32 mg g⁻¹.
•: Results show Cu adsorption on TOCN-PEI is an exothermic and enthalpy-driven process.
•: Sorption-desorption tests reveal that TOCN-PEI has good stability for Cu removal.

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