Transition metal chalcogenides (TMCs) have been well-established as ideal low-dimensional systems for photocatalytic hydrogen evolution. Strategies toward improving the activity of these TMCs photocatalysts by crafting heterostructures have been intensively...

Developing novel catalysts with both easily accessible recyclability and long-term durability toward chemicals synthesis is highly desirable yet remains to be explored. In this work, the porous and bulk sponge-confined...

MXene nanosheets have been worthy contenders for various applications owing to their unique physicochemical properties but can be easily oxidized to lose their functional properties, especially in a water medium with unclear oxidation mechanism. Here, we investigate the effect of main free radicals in water on the oxidation of Ti 3 C 2 T x and screen out the corresponding effective scavengers. It is found that •OH is more detrimental to Ti 3 C 2 T x in water, and agents such as NaHCO 3 stabilizing Ti 3 C 2 T x by scavenging •OH have been proved to be effective at 50 °C and under visible light irradiation, extending the storage life of Ti 3 C 2 T x colloids up to 140 days at 5 °C. As a proof of concept, the NaHCO 3 -stablized Ti 3 C 2 T x is superior to the unprotected counterpart for supercapacitors and photocatalytic applications. It is expected that this study provides important insights into enhancing the oxidation resistance of Ti 3 C 2 T x in water and facilitates the application of Ti 3 C 2 T x -based materials under multiple environmental conditions.