3D chrysanthemum like pristine ReS₂ and nanocomposite of ReS₂ with reduced graphene oxide (rGO) have been synthesized using facile one step hydrothermal method, followed by physico-chemical characterizations to reveal their phase, structural and electronic properties. Efforts have been made to reveal the influence of process parameters on morphology and growth of the as-synthesized products. From application point of view, field emission (FE) behavior of pristine ReS₂ and ReS₂-rGO nanocomposite emitters has been investigated at base pressure of 1נ10^–8 torr. The ReS₂ and ReS₂-rGO nanocomposite emitters showed values of turn-on field (corresponding to emission current density of 1μA cm⁻²) as 2.10 and 1.66 V μm⁻¹, and field enhancement factor (β) as∼965 and 1176, Furthermore, the ReS₂-rGO nanocomposite emitter delivered maximum emission current density of∼1472 μA cm⁻² at applied field of 3.1 V μm⁻¹. Both the emitters exhibited good emission current stability at pre-set value∼5 μA over more than 3 h duration. The superior FE properties of the ReS₂-rGO nanocomposite emitter are attributed to optimized morphology offering high field enhancement factor coupled with modulation of electronic properties reflected as lowering of the work function. The value of work function of ReS₂-rGO nanocomposite, measured using a retarding field analyzer, is found to be 4.29, lower than that of the pristine sample (4.49 eV). The results signify that functionality of pristine nanostructures is greatly improved via formation of nanocomposites and desirable nanocomposites possessing unique morphology can be synthesized under optimized experimental conditions using a facile and inexpensive hydrothermal route.

3D 菊花如原始 ReS ₂和 ReS ₂与还原氧化石墨烯 (rGO) 的纳米复合材料已使用简便的一步水热法合成，然后进行物理化学表征以揭示它们的相、结构和电子特性。已经努力揭示工艺参数对合成产物的形态和生长的影响。从应用的角度来看，原始 ReS ₂和 ReS ₂ -rGO 纳米复合材料发射体在 1 נ10 ^–8托的基础压力下的场发射 (FE) 行为已被研究。ReS ₂和 ReS ₂-rGO 纳米复合材料发射极的导通场值（对应于 1 μ A cm ^{-2 的}发射电流密度）为 2.10 和 1.66 V μ m ^-1，场增强因子（β）为~965 和 1176，此外， ReS ₂ -rGO 纳米复合材料发射器在 3.1 V μ m ^{-1 的}外加场下提供~ 1472 μ A cm ^{-2 的}最大发射电流密度。两种发射器在超过 3 小时的持续时间内均在预设值~5 μ A 下表现出良好的发射电流稳定性。ReS ₂的卓越 FE 特性-rGO 纳米复合发射器归因于优化的形态，提供高场增强因子，并结合电子特性的调制，反映为功函数的降低。发现使用阻滞场分析仪测量的 ReS ₂ -rGO 纳米复合材料的功函数值为4.29，低于原始样品的功函数值(4.49 eV)。结果表明，原始纳米结构的功能通过形成纳米复合材料而大大提高，并且可以在优化的实验条件下使用简便且廉价的水热途径合成具有独特形态的理想纳米复合材料。