Farooq Komal, Murtaza Maida, Kiran Laraib, Farooq Kashf, Shah Waqas Ali, Waseem Amir
Department of Chemistry, Quaid-i-Azam University Islamabad-45320 Pakistan
Department of Chemistry, University of Poonch Rawalakot Azad Kashmir Pakistan.
Nanoscale Adv. 2025 Jan 27;7(6):1561-1571. doi: 10.1039/d4na00936c. eCollection 2025 Mar 11.
Research on water splitting is paramount for developing low-carbon alternative energy sources. Nevertheless, creating an efficient, cost-effective, and bifunctional electrocatalyst that facilitates both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) remains an elusive goal. In this work, we report a novel hybrid nanostructured electrocatalyst by combining and pyrolyzing MXene, MIL-53(Fe), and ZIF-67. Comprehensive characterization of the synthesized nanocomposites was conducted using XRD, FESEM, TEM, EDX, and XPS. Notably, among the synthesized electrocatalysts, M3 demonstrated exceptional performance, achieving 10 mA cm at 237 mV and 50 mA cm at 292 mV for the OER, and 10 mA cm at 307 mV and 50 mA cm at 481 mV for the HER. The Tafel slope values were 64 mV dec for the OER and 185 mV dec for the HER at 10 mA cm. Moreover, M3 exhibited excellent stability, with negligible current density loss over 12 hours, and showed good mass activity of 57.5 and 54.6 A g and TOFs of 1.56 and 2.97 s, for the OER and HER, respectively. This study highlights the efficacy of integrating MXene (TiCT ) with MIL-53(Fe) and ZIF-67, creating a potent bifunctional OER and HER electrocatalyst. The synergistic combination enhances electrical conductivity, active site availability, and structural stability, yielding superior performance. The findings of this investigation underscore the importance of strategic design and optimization of bifunctional electrocatalysts for energy conversion applications.
水分解研究对于开发低碳替代能源至关重要。然而，制备一种高效、经济高效且具有双功能的电催化剂，以促进析氧反应（OER）和析氢反应（HER）仍然是一个难以实现的目标。在这项工作中，我们报告了一种通过将MXene、MIL-53(Fe)和ZIF-67混合并热解制备的新型混合纳米结构电催化剂。使用XRD、FESEM、TEM、EDX和XPS对合成的纳米复合材料进行了全面表征。值得注意的是，在合成的电催化剂中，M3表现出优异的性能，在析氧反应中，在237 mV时达到10 mA cm，在292 mV时达到50 mA cm；在析氢反应中，在307 mV时达到10 mA cm，在481 mV时达到50 mA cm。在10 mA cm时，析氧反应的塔菲尔斜率值为64 mV dec，析氢反应的塔菲尔斜率值为185 mV dec。此外，M3表现出优异的稳定性，在12小时内电流密度损失可忽略不计，并且在析氧反应和析氢反应中分别表现出良好的质量活性，分别为57.5和54.6 A g，以及1.56和2.97 s的TOF。这项研究突出了将MXene（TiCT ）与MIL-53(Fe)和ZIF-67整合的有效性，从而创建了一种强大的双功能析氧和析氢电催化剂。这种协同组合提高了电导率、活性位点可用性和结构稳定性，产生了卓越的性能。这项研究的结果强调了双功能电催化剂的战略设计和优化对于能量转换应用的重要性。
