Zubaid Shaista, Jabeen Misbah, Ahmad Hirra, Chaudhary Abid Ur Rehman, Naqvi Syed Ali Raza, Tufail Aliya, Shah Atta Ullah, Khan Yaqoob, Sherazi Tauqir A
Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad 22060 Pakistan
Department of Chemistry, Government College University Faisalabad Faisalabad 38040 Pakistan.
RSC Adv. 2025 Jul 17;15(31):25393-25403. doi: 10.1039/d5ra02903a. eCollection 2025 Jul 15.
Transition-metal chalcogenides have emerged as strong candidates for the hydrogen evolution reaction (HER) due to their exceptional catalytic activity. A facile synthetic method of TiCT MXene, and transition-metal chalcogenides (specifically nickel-molybdenum sulfide), and their hybrid formation growth of nickel-molybdenum sulfide within MXene 2D nanosheets (NiMoS-MXene) is reported. The synthesis of these electrocatalysts was confirmed through X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). Electrochemical studies of NiMoS and NiMoS-MXene were conducted after depositing these materials onto nickel foam, which served as the "current collector". The HER performance of NiMoS was significantly enhanced in an alkaline medium after forming a hybrid with MXene (NiMoS-MXene). The overpotential was found to be 104 mV at 10 mA cm, and the Tafel slope for the HER was 52 mV dec. NiMoS-MXene exhibited remarkable durability and a low charge-transfer resistance ( = 2.18 Ω). The high electrical conductivity of MXene ensured efficient electron transport to active sites, whereas NiMoS offered excellent catalytic activity, facilitating proton adsorption and hydrogen generation. Thus, a synergistic effect arises from the complementary properties of the components in the hybrid electrocatalyst, resulting in favourable characteristics for the HER. These findings suggest that the transition-metal chalcogenides, in combination with MXene, could serve as efficient and durable electrocatalysts for electrochemical water-splitting.
过渡金属硫族化合物因其卓越的催化活性，已成为析氢反应（HER）的有力候选材料。本文报道了一种简便的合成TiCT MXene、过渡金属硫族化合物（特别是硫化镍钼）及其杂化物（在MXene二维纳米片内生长硫化镍钼，即NiMoS-MXene）的方法。通过X射线衍射光谱（XRD）、扫描电子显微镜（SEM）和能量色散X射线光谱（EDS）对这些电催化剂的合成进行了确认。在将这些材料沉积到用作“集电器”的泡沫镍上之后，对NiMoS和NiMoS-MXene进行了电化学研究。与MXene形成杂化物（NiMoS-MXene）后，NiMoS在碱性介质中的HER性能显著增强。发现在10 mA cm时过电位为104 mV，HER的塔菲尔斜率为52 mV dec。NiMoS-MXene表现出显著的耐久性和低电荷转移电阻（ = 2.18 Ω）。MXene的高电导率确保了电子向活性位点的有效传输，而NiMoS具有优异的催化活性，促进了质子吸附和氢气生成。因此，杂化电催化剂中各组分的互补特性产生了协同效应，从而具有有利于HER的特性。这些发现表明，过渡金属硫族化合物与MXene相结合，可作为电化学水分解的高效耐用电催化剂。
