Novel synthesis of reduced graphene oxide-ordered mesoporous carbon composites and their application in electrocatalysis
Novel synthesis of reduced graphene oxide-ordered mesoporous carbon composites and their application in electrocatalysis
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DOI：
10.1016/j.electacta.2012.11.099
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发表时间：
2013-02
影响因子：
6.6
通讯作者：
Jing Tang;Tao Wang;Xin Sun;Yuan Hu;Qiaoqiao Xie;Yunxia Guo;Hairong Xue;Jianping He
中科院分区：
文献类型：
--
作者：
Jing Tang;Tao Wang;Xin Sun;Yuan Hu;Qiaoqiao Xie;Yunxia Guo;Hairong Xue;Jianping He
通过硬模板法成功制备了还原氧化石墨烯有序介孔碳复合材料（RGO-OMC）。首先，我们在二氧化硅的形成过程中引入氧化石墨烯，以获得氧化石墨烯有序介孔二氧化硅（GO-OMS）模板。然后以GO-OMS和蔗糖分别为模板和碳源制备目标产物RGO-OMC。结果表明，介孔碳明确地被还原氧化石墨烯（RGO）片覆盖，具有扩展的结构纹理和更高的石墨化程度。此外，研究发现，由于载体的结构优势、较高的Pt负载效率和均匀的Pt分布，RGO-OMC负载的Pt催化剂表现出增强的电化学性能和甲醇氧化的长期稳定性。
Reduced graphene oxide-ordered mesoporous carbon composite materials (RGO-OMC) have been successfully fabricated through hard-template method. Firstly, we introduced graphene oxide during the formation of silica to obtain graphene oxide-ordered mesoporous silica (GO-OMS) template. Then target product RGO-OMC was fabricated by employing GO-OMS and sucrose to be template and carbon source, respectively. The results reveal that mesoporous carbons are unambiguously covered by reduced graphene oxide (RGO) sheets, possessing an expanded structure texture and higher graphitization degree. Furthermore, it was found that Pt catalysts supported on RGO-OMC showed enhanced electrochemical performance and long-term stability for methanol oxidation due to the structure advantages of the support, high Pt-loading efficiency and uniform Pt distribution.