文献类型：期刊文献

英文题名：Directionally-Grown Carboxymethyl Cellulose/Reduced Graphene Oxide Aerogel with Excellent Structure Stability and Adsorption Capacity

作者：Zhao, Mengke[1] Zhang, Sufeng[1] Fang, Guigan[2] Huang, Chen[2] Wu, Ting[2]

第一作者：Zhao, Mengke

通信作者：Zhang, SF[1];Fang, GG[2]|[a000589b6171897e30b38]房桂干;

机构：[1]Shaanxi Univ Sci & Technol, Natl Demonstrat Ctr Expt Light Chem Engn Educ, Shaanxi Prov Key Lab Papermaking Technol & Specia, Key Lab Paper Based Funct Mat China Natl Light In, Xian 710021, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China

年份：2020

卷号：12

期号：10

起止页码：1-15

外文期刊名：POLYMERS

收录：;EI(收录号：20204309383028);Scopus(收录号：2-s2.0-85092776093);WOS:【SCI-EXPANDED(收录号:WOS:000586133200001)】；

基金：This work was supported by the National Key Research and Development Program: High Efficiency Clean Pulping and Functional Product Production Technology Research (Grant No. 2017YFD0601005), International Joint Research Center for biomass chemistry and materials, Shaanxi international science and technology cooperation base (No. 2018GHJD-19) and Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University (No. 2019KF22).

语种：英文

外文关键词：carboxymethyl cellulose; reduced graphene oxide; directional freezing technique; adsorption; wastewater treatment

摘要：A novel three-dimensional carboxymethyl cellulose (CMC)/reduced graphene oxide (rGO) composite aerogel crosslinked by poly (methyl vinyl ether-co-maleic acid)/poly (ethylene glycol) system via a directional freezing technique exhibits high structure stability while simultaneously maintaining its excellent adsorption capacity to remove organic dyes from liquid. A series of crosslinked aerogels with different amounts of GO were investigated for their adsorption capacity of methylene blue (MB), which were found to be superb adsorbents, and the maximum adsorption capacity reached 520.67 mg/g with the incorporation of rGO. The adsorption kinetics and isotherm studies revealed that the adsorption process followed the pseudo-second-order model and the Langmuir adsorption model, and the adsorption was a spontaneous process. Furthermore, the crosslinked aerogel can be easily recycled after washing with dilute HCl solution, which could retain over 97% of the adsorption capacity after recycling five times. These excellent properties endow the crosslinked CMC/rGO aerogel's potential in wastewater treatment and environment protection.