Self-assembly synthesis of Ni-decorated Nb2C MXene as an efficient and stable catalyst towards electrochemical nitrogen reduction

Engineering strategies and active site identification of MXene-based catalysts for electrochemical conversion reactions

“…combined with MXenes can also boost the NRR process. [335][336][337][338][339][340][341][342] For instance, nano-sized Au particles combined with Ti 3 C 2 could facilitate N 2 adsorption at the interface of Au and Ti 3 C 2 , significantly weakening the N-N triple bond. 338 The optimized Au/Ti 3 C 2 with an Au content of 0.94% could achieve improved NRR catalytic performance with an FE of 18.34% at À0.2 V vs. RHE and an enhanced NH 3 yield of 30.06 mg h À1 mg À1 .…”

A simple approach to synthesize NiFe-LDH–Nb2C MXene for enhanced electrochemical nitrogen reduction reactions by a synergistic effect

“…As a new class of 2D materials with excellent physicochemical properties, including excellent electrical conductivity, physicochemical stability, and desirable large specific surface area, 28–31 MXenes have become a widely used catalyst carrier for electrochemical ammonia synthesis. 32–35 The abundant surface functional groups of MXenes, such as –O, –OH, and –F, facilitate the combination between MXenes and metal catalysts, thus improving the electrical conductivity and activity of NRR catalysis. 36–39 Chu et al 40 prepared an Sb/Nb 2 CT x electrochemical ammonia catalyst with interfacial electron coupling, achieving a FE of 27.3% (−0.2 V vs. RHE) and an ammonia yield of 49.8 μg h −1 mg cat −1 (−0.4 V vs. RHE).…”

“…[20][21][22][23][24][25][26][27] As a new class of 2D materials with excellent physicochemical properties, including excellent electrical conductivity, physicochemical stability, and desirable large specific surface area, [28][29][30][31] MXenes have become a widely used catalyst carrier for electrochemical ammonia synthesis. [32][33][34][35] The abundant surface functional groups of MXenes, such as -O, -OH, and -F, facilitate the combination between MXenes and metal catalysts, thus improving the electrical conductivity and activity of NRR catalysis. [36][37][38][39] With a flexible electrochemical composition and good catalytic activity and stability, NiFe layered double hydroxides (LDHs) are excellent NRR catalysts.…”

MIL-101(Fe)@Nb2C MXene for efficient electrocatalytic ammonia production: an experimental and theoretical study

“…In addition, their abundant surface functional groups such as -O, -OH, and -F, are beneficial for the construction of an intimate contact interface between the MXene and MOFs, thereby improving the catalytic activity. [49][50][51] In this work, MIL-101(Fe) is synthesized and composited with Nb 2 C MXene, which showed an excellent NRR and NO 3 À RR performance. In 0.1 M KOH electrolyte, the MIL-101(Fe)@Nb 2 C achieved an ammonia yield of 8.92 mg h À1 cm À2 and a high FE of 20.77% at À0.3 V vs. RHE.…”

“…In addition, their abundant surface functional groups such as –O, –OH, and –F, are beneficial for the construction of an intimate contact interface between the MXene and MOFs, thereby improving the catalytic activity. 49–51…”