Journal of Colloid and Interface Science 461 (2016) 96–103 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Nitrogen-doped hierarchical porous carbon with high surface area derived from graphene oxide/pitch oxide composite for supercapacitors ⇑ ⇑ Yuan Ma, Chang Ma , Jie Sheng, Haixia Zhang, Ranran Wang, Zhenyu Xie, Jingli Shi State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China graphical a bstract ar ti c l e i nf o ab stra ct Article history: A nitrogen-doped hierarchical porous carbon has been prepared through one-step KOH activation of pitch Received 27 May 2015 oxide/graphene oxide composite. At a low weight ratio of KOH/composite (1:1), the as-prepared carbon Revised 21 August 2015 possesses high speciﬁc surface area, rich nitrogen and oxygen, appropriate mesopore/micropore ratio and Accepted 27 August 2015 considerable small-sized mesopores. The addition of graphene oxide plays a key role in forming 4 nm Available online 28 August 2015 2 1 mesopores. The sample PO–GO-16 presents the characteristics of large surface area (2196 m g ), high mesoporosity (47.6%), as well as rich nitrogen (1.52 at.%) and oxygen (6.9 at.%). As
Journal of Colloid and Interface Science – Elsevier
Published: Jan 1, 2016
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