Study of the effect of chemical composition on the surface wettability of three-dimensional graphene foams |
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| Affiliation: | 1. Institute of Analytical Technology and Smart Instruments, College of Environment and Public Health, XiamenHuaxia University, Xiamen 361024, China;2. State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China;3. College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China;1. Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2. The Affiliated Hospital of Qingdao University, Qingdao 266003, China;1. College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China;2. Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, Beijing 100190, China;3. Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, China;4. University of Chinese Academy of Sciences, Beijing 100049, China;5. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;1. School of chemistry and Environmental Science, Shangrao Normal University, Shangrao 334001, China;2. Department of Chemistry, Fudan University, Shanghai 200433, China |
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| Abstract: | The chemical composition obviously affects the surface wettability of a three-dimensional (3D) graphene material apart from its surface energy and microstructure. In the hydrothermal preparation, the heteroatom doping changes the chemical composition and wettability of the 3D graphene material. To realize the controllable surface wettability of graphene materials, aminobenzene sulfonic acid (ABSA) was selected as a typical doping agent for the preparation of nitrogen and sulfur co-doped 3D graphene foam (SNGF) using a hydrothermal method. Different from using o-ABSA or p-ABSA as the dopant, SNGF with tunable surface wettability is obtained only when m-ABSA is used. This result indicates that the substituent position of -SO3H group in the benzene ring of ABSA is rather important for the tunable wettability. This work provides some theoretical foundations for dopant selection and some new insights in manipulating the properties of 3D graphene foams by adjusting the configuration of dopants. |
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| Keywords: | 3D graphene foam Surface wettability Dopant configuration Chemical composition Aminobenzene sulfonic acid |
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