A conductive graphene–melamine sponge (MS) prepared via microwave irradiation is reported in this paper. Graphene oxide supported on the MS was prereduced first at 100 °C and then further reduced in a household microwave oven at over 1000 °C. It was surprising to find that graphene oxide on the MS was reduced perfectly while the three-dimensional structure of the MS was kept well after high-temperature reduction via microwave irradiation. Slight pyrolysis of MS was also found during 5 s microwave irradiation, resulting in nitrogen generation from the pyrolysis of the MS being doped into graphene, which could benefit the electric conductivity of the prepared graphene–MS. The electric conductivity of the prepared graphene–MS is about 0.12–1.0 S/m because of the high reduction degree of graphene oxide and nitrogen doping. On the other hand, different from the pure MS, the newly developed conductive graphene–MS possesses superhydrophobic and superoleophilic properties. Overall, the newly developed conductive graphene–MS contained 94.3 wt % MS and 5.7 wt % N-doped graphene and is a cost-effective material with good elasticity, high conductivity, superhydrophobicity, and superoleophilicity.

中文翻译：

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微波辐照制备导电石墨烯-三聚氰胺海绵

本文报道了通过微波辐照制备的导电石墨烯-三聚氰胺海绵（MS）。负载在MS上的氧化石墨烯首先在100°C下预先还原，然后在超过1000°C的家用微波炉中进一步还原。令人惊讶地发现，在通过微波辐射高温还原之后，MS上的氧化石墨烯被完美还原，而MS的三维结构被很好地保持。在微波辐照5 s的过程中，还发现了MS的轻微热解，这导致了将MS的热解过程中产生的氮掺杂到石墨烯中，这可能有利于制备的石墨烯– MS的电导率。制备的石墨烯-MS的电导率约为0.12-1.0 S / m，这是因为石墨烯氧化物和氮掺杂的还原度很高。另一方面，与纯MS不同，新开发的导电石墨烯–MS具有超疏水和超亲油性。总体而言，新开发的导电石墨烯-MS包含94.3 wt％的MS和5.7 wt％的N掺杂的石墨烯，是一种经济高效的材料，具有良好的弹性，高导电性，超疏水性和超亲油性。