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Karimi-Nazarabad M, Goharshadi EK, Mehrkhah R, Davardoostmanesh M. Highly efficient clean water production: Reduced graphene oxide/ graphitic carbon nitride/wood. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119788] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li Y, Wang B, Wu M, Huan W, Li J. Magnetic graphene oxide nanocomposites as an effective support for lactase immobilization with improved stability and enhanced photothermal enzymatic activity. NEW J CHEM 2021. [DOI: 10.1039/d0nj06260j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Magnetic graphene oxide-immobilized lactase with high loading capacity, improved stabilities, and photothermal enhancement of activity has been reported.
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Affiliation(s)
- Yinglong Li
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass
- Zhejiang A&F University
- Lin’an
- China
| | - Buchuan Wang
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass
- Zhejiang A&F University
- Lin’an
- China
| | - Minjie Wu
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass
- Zhejiang A&F University
- Lin’an
- China
| | - Weiwei Huan
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass
- Zhejiang A&F University
- Lin’an
- China
| | - Jie Li
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass
- Zhejiang A&F University
- Lin’an
- China
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Dai C, Sun W, Xu Z, Liu J, Chen J, Zhu Z, Li L, Zeng H. Assembly of Ultralight Dual Network Graphene Aerogel with Applications for Selective Oil Absorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13698-13707. [PMID: 33143419 DOI: 10.1021/acs.langmuir.0c02664] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
High-performance graphene aerogels with well-developed internal structures are generally obtained by means of introducing additive materials such as carbon nanotubes, cellulose, and lignin into the aerogel network, which not only enhances the cost but also complicates the preparation process. Therefore, tailoring the internal structure of pristine graphene aerogel in a feasible way to achieve high performance is of great significance to the practical applications. Herein, a novel cysteamine/l-ascorbic acid graphene aerogel (CLGA) was fabricated by a simple one-step hydrothermal method followed by freeze-drying. Through the creative combination of the reducing agent l-ascorbic acid and cross-linking agent cysteamine, a dual-network structure was constructed by both layered physical stacking and vertical chemical cross-linking. The addition of cysteamine not only enhanced the reduction degree but also assisted the formation of more vertical connections between graphene nanosheets, resulting in more abundant pores with smaller sizes compared with graphene aerogels prepared by the traditional hydrothermal reduction method. CLGA possessed an ultra-low density of 4.2 mg/cm3 and a high specific surface area of 397.9 m2/g. As expected, this dual-network structure effectively improved the absorption capacity toward a variety of oil and organic solvents, with an outstanding oil absorption capacity up to 310 g/g. Furthermore, CLGA possessed good mechanical properties and oil/water selectivity. The absorbed oil could be recovered by both continuous absorption-removal process and mechanical squeezing, making the as-prepared aerogel superior absorbent material for a variety of applications, such as selective oil absorption and water treatment.
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Affiliation(s)
- Caili Dai
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Wen Sun
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhongzheng Xu
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Jiawei Liu
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Jia Chen
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhixuan Zhu
- Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Lin Li
- Key Laboratory of Unconventional Oil & Gas Development, Ministry of Education, China University of Petroleum (East China), Qingdao 266580, China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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