Herein, we present a novel metal–organic framework (MOF)-derived Janus-type nanoarchitecture, constructed with reduced graphene oxide (rGO) wrapped trimetallic sulfide nanowires (Ni-Co-Fe-S/rGO). The Ni-Co-Fe-S/rGO possesses ultrafast electron transfer and ion diffusion, benefiting from its unique morphology of one-dimensional (1D) sulfide nanowires wrapped into two-dimensional (2D) rGO nanosheets. Furthermore, the charge re-balancing after electron transfer among Ni, Co and Fe in the unit system leads to the overlap of the electron cloud and the change of band structures. Consequently, it delivers excellent oxygen evolution reaction (OER) performances with a low Tafel slope of 56.4 mV dec⁻¹, an overpotential of 251 mV@10 mA cm⁻² and excellent stability over 36 h. Moreover, it shows a high photocatalytic degradation (POD) efficiency of 96.06% for rhodamine B dye with excellent cyclic degradation stability. This work presents a novel approach for the controllable synthesis of low-cost bifunctional catalysts with boosted OER and POD performances.

中文翻译：

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rGO包裹的三金属硫化物纳米线可作为有效的双功能催化剂，用于电催化氧释放和光催化有机降解

在这里，我们介绍了一种新颖的金属有机框架（MOF）派生的Janus型纳米结构，该结构由氧化石墨烯（rGO）包裹的三金属硫化物纳米线（Ni-Co-Fe-S / rGO）构成。Ni-Co-Fe-S / rGO具有超快的电子转移和离子扩散能力，得益于其包裹在二维（2D）rGO纳米片中的一维（1D）硫化物纳米线的独特形态。此外，在单位体系中Ni，Co和Fe之间电子转移后的电荷再平衡导致电子云的重叠和能带结构的变化。因此，它以56.4 mV dec ^-1的低Tafel斜率，251 mAv @ 10 mA cm ^-2的过电势提供了出色的氧释放反应（OER）性能。在36小时内具有出色的稳定性。此外，它对罗丹明B染料显示出96.06％的高光催化降解（POD）效率，并具有优异的循环降解稳定性。这项工作提出了一种新颖的方法，用于可控制的合成具有提高的OER和POD性能的低成本双功能催化剂。