MXene‐based Materials for Water Splitting: Synthesis and Modification

Abstract

With abundant metal site and tunable electronic structure, MXene is considered as a promising electrocatalyst for the conversion of energy molecules. In this review, the latest research progress on inexpensive MXene-based catalysts for water electrolysis is summarized. Typical preparation and modification methods and their advantages and disadvantages are briefly discussed, with a focus on the regulation and design of the surface interface electronic states, which improve the electrocatalytic performance of MXene-based materials. The main strategies for the electronic state modification include end-group modification, heteroatom doping, and heterostructure construction. Some limitations of MXene-based materials, which should be considered in the rational design of advanced MXene-based electrocatalyst, are also discussed. Finally, prospects for the rational design of Mxene-based electrocatalysts is proposed.

Boosting Peroxymonosulfate Activation via CoS/MXene Nanocomposite for Rhodamine B Degradation under Simulated Sunlight Irradiation

“…This aligned with the disappearance of the Al peaks in the XRD pattern, providing additional evidence for the successful formation of Ti 3 C 2 MXene. Simultaneously, the heightened levels of O and F in the EDS results suggest the potential formation of terminal hydroxyl group (−OH) and terminal fluorine group (−F) [20] …”

Electrooxidation of Perfluorocarboxylic Acids by an Interfacially Engineered Magnéli Phase Titanium Oxide (Ti4O7) Electrode with MXene

“…40 TiO 2 /MXene hybrids have also been reported for enhancing separation and antifouling performance, 41 improving the electrocatalytic capability for oxygen evolution reaction and water splitting. 42,43 Surface engineering of MXenes was also shown to alter the electronic structures, enhance the active site density, improve the adsorption energy, and then accelerate the electrocatalytic activity. 44 This study fabricated Ti 4 O 7 nanoparticles and decorated them onto MXene nanosheets (Ti 3 C 2 T x ) to form a hybrid nanomaterial (Ti 4 O 7 /MXene) and to evaluate the electrochemical oxidation of PFAS.…”

“…Guo et al composed a cobalt and cobalt oxide heterojunction deposited on a Ti 3 C 2 MXene nanosheet as a difunctional electrocatalyst for water oxidation, and the catalyst sustained the electrolysis reactions at 50 mA·cm –2 over 70 h without significant catalyst aging . TiO 2 /MXene hybrids have also been reported for enhancing separation and antifouling performance, improving the electrocatalytic capability for oxygen evolution reaction and water splitting. , Surface engineering of MXenes was also shown to alter the electronic structures, enhance the active site density, improve the adsorption energy, and then accelerate the electrocatalytic activity …”

Research progress of transition-metal dichalcogenides for the hydrogen evolution reaction

“…As a result, hydrogen is a reliable and eco-friendly energy source, and is regarded as the main energy source for the future. 1–12 Hydrogen production by electrolysis of water is a commonly used hydrogen production strategy at present. 13–15 In an acidic medium, the reaction can be divided into two steps.…”