Large-scale synthesis of porous graphene through nanoscale carbothermal reduction etching
Large-scale synthesis of porous graphene through nanoscale carbothermal reduction etching
复制标题
通过纳米级碳热还原蚀刻大规模合成多孔石墨烯
DOI：
10.1007/s10853-015-9309-1
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发表时间：
2015-09
影响因子：
4.5
通讯作者：
Fan Hai Ming
中科院分区：
文献类型：
--
作者：
Zhang Ming;Bao Wen Xiao;Liu Xiao Li;Yu Bao Zhi;Ren Zhao Yu;Bai Jin Tao;Fan Hai Ming
多孔石墨烯在片材上具有纳米级的孔隙，在许多技术重要的行业中显示出巨大的潜力。然而，包括高能技术和模板蚀刻/生长方法在内的多孔石墨烯合成转化方法通常在成本高、产量低的基底上进行。在这里，我们展示了一种使用单分散氧化锌纳米颗粒通过碳热还原反应制备多孔石墨烯的通用且可扩展的合成方法。结果表明，ZnO 纳米粒子首先通过静电相互作用附着在氧化石墨烯纳米片上，然后在 800 °C 下进行碳热还原反应，在片材上产生孔隙。当氧化石墨烯纳米片热还原为石墨烯时，所有副产物（一氧化碳、二氧化碳和锌）同时从最终产品中逸出。所得多孔石墨烯的表征表明，孔径约为 11 nm，大于 ZnO 纳米粒子（~5 nm），这归因于 ZnO 纳米粒子（~20 nm）在氧化石墨烯片上的聚集。这些结果表明孔隙尺寸、ZnO纳米粒子和ZnO聚集体之间存在一定的相关性，这有助于通过选择合适的蚀刻剂来控制孔隙尺寸。
Porous graphene, which features nanoscaled pores on the sheets, has shown great potential in many technologically important industries. However, the conversional approaches for the synthesis of porous graphene including high-energy techniques and template etching/growth methods are generally conducted on substrates with high cost and low throughput. Herein, we demonstrate a general and scalable synthetic method for porous graphene via carbothermal reduction reaction using monodisperse zinc oxide nanoparticles. The results indicate that ZnO nanoparticles were first attached on graphene oxide nanosheets by electrostatic interaction, and then undergone a carbothermal reduction reaction at 800 °C to produce the pores on the sheets. While graphene oxide nanosheets were thermally reduced to graphene, all the by-products (carbon monoxide, carbon dioxide, and zinc) escaped from the final products simultaneously. The characterizations of the obtained porous graphene reveal that the pore size is about 11 nm, larger than that of ZnO nanoparticles (~5 nm), which is ascribed to the aggregation of ZnO nanoparticles (~20 nm) on the graphene oxide sheets. These results show the certain correlation among the sizes of pores, ZnO nanoparticles and ZnO aggregations, which gain insight into the controlling of pore size by choosing suitable etching agent.
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影响因子：
64.8
作者：
通讯作者：
--
影响因子：
10.9
作者：
Sircar, S;Golden, TC;Rao, MB
通讯作者：
Rao, MB
影响因子：
15
作者：
BECK, JS;VARTULI, JC;SCHLENKER, JL
通讯作者：
SCHLENKER, JL
影响因子：
16.6
作者：
Moon, In Kyu;Lee, Junghyun;Lee, Hyoyoung
通讯作者：
Lee, Hyoyoung
影响因子：
8.6
作者：
McAllister, Michael J.;Li, Je-Luen;Aksay, Ilhan A.
通讯作者：
Aksay, Ilhan A.