Surface engineering of hematite nanorods by 2D Ti3C2-MXene: Suppressing the electron-hole recombination for enhanced photoelectrochemical performance

Constructing large-size and ultrathin NiCoP nanosheets on an Fe2O3 photoanode toward efficient solar water splitting

“…20,21 To address these limitations, great efforts have focused on the surface deposition of OER cocatalysts, which can effectively passivize the surface defect states to suppress surface charge recombination and reduce the activation energy of the oxygen evolution reaction to accelerate water oxidation reaction kinetics. [22][23][24][25][26] Up to now, various OER cocatalysts (including CoFeO x , 27 FeOOH, 23 NiFeOOH, 28 Co-Mn nanosheets, 29 Co-doped carbon layer 30 and Ti 3 C 2 -MXene 31,32 ) were deposited on the surface of Fe 2 O 3 photoanodes to form a uniform overlayer. More specically, these surface decoration strategies could effectively increase the contact area between photoanodes and OER cocatalysts, thus enhancing the PEC water oxidation activity and stability.…”

“…Up to now, various OER cocatalysts (including CoFeO x , 27 FeOOH, 23 NiFeOOH, 28 Co–Mn nanosheets, 29 Co-doped carbon layer 30 and Ti 3 C 2 -MXene 31,32 ) were deposited on the surface of Fe 2 O 3 photoanodes to form a uniform overlayer. More specifically, these surface decoration strategies could effectively increase the contact area between photoanodes and OER cocatalysts, thus enhancing the PEC water oxidation activity and stability.…”

Engineering MoOx/MXene Hole Transfer Layers for Unexpected Boosting of Photoelectrochemical Water Oxidation

“…It is well-known that transition metal carbides, nitrides, and carbonitrides (MXenes) as promising catalysts, have drawn attention owing to metallic electrical conductivity and high specific surface area. [31][32][33][34][35][36] For example, Ti 3 C 2 MXene nanoparticles were coupled on a TiO 2 photoanode as MXene-based TiO 2 /Ti 3 C 2 heterostructures for efficient PEC water splitting. [34,35] Ti 3 C 2 MXene was utilized to construct hematite/MXene nanorod heterostructures for improved PEC activity and stability.…”

“…[34,35] Ti 3 C 2 MXene was utilized to construct hematite/MXene nanorod heterostructures for improved PEC activity and stability. [36,37] Core-shell structured MXene@carbon nanodots were applied as bifunctional catalysts for enhanced PEC water splitting performance owing to the efficient charge transfer. [38] Especially, MXene, NiO x , MoO x , carbon dots, black phosphorene, carbon nitride and ferrihydrite have acted as the reservoirs of the photogenerated charges.…”

Potential of MXene-Based Heterostructures for Energy Conversion and Storage

“…9−11 MXenes have been utilized in various applications owing to their highly desirable physicochemical, electronic, 12 optic, 13 and mechanical properties. 14,15 For example, photonic devices 16,17 and sensors 18 have been demonstrated.…”