2D ultrathin NiMOF decorated by Ti3C2 MXene for highly improved photocatalytic performance

Enabling Continuous and Improved Solar-Driven Atmospheric Water Harvesting with Ti3C2-Incorporated Metal–Organic Framework Monoliths

“…XRD measurements indicated that the TUN composite exhibited XRD patterns similar to those of bare UiO-66-NH 2 , while no obvious characteristic XRD peaks of Ti 3 C 2 were observed (Figure 2c). 39,40 This was due to the relatively low Ti 3 C 2 content in the TUN composite and dense MOF coating on Ti 3 C 2 nanosheets, well matching previously reported results. 37,40,41 Following similar protocols, further adjusting the concentration of Ti 3 C 2 being used in the solvothermal reaction system resulted in the production of TUN composites with 5 and 15 wt % of Ti 3 C 2 content.…”

Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes

“…The optical-response of the Ti 3 AlC 2 MAX precursor and as-synthesized Mxene powder was investigated using the ultraviolet-visible (UV-Vis) absorption spectra. The Ti 3 AlC 2 curve in Figure 3 and pristine Ti 3 C 2 T x curve in Figure 3 indicate good optical response for an incident light range of 200–800 nm due to the black color of Ti 3 C 2 with no clear absorption edge, indicating the metallic nature of Ti 3 C 2 [ 69 , 70 , 71 , 72 ]. The broadness of these UV-Vis absorption bands are well-correlated with the previously reported optical features of Mxenes; this characteristic may be attributed to the localized surface plasmon resonance (LSPR) effect [ 73 , 74 , 75 , 76 ].…”

Efficient Visible‐Light‐Driven Photocatalytic Hydrogen Generation over 2D/2D Co‐ZIF‐9/Ti3C2 Hybrids

“…The positive slope of the plot indicates that this sample is a typical n-type semiconductor. [7,11,40,41] It can be seen that the flat band potential of Co-ZIF-9 is about À 0.57 V vs Ag/AgCl (À 0.37 V vs NHE). As is known, the conduction band (CB) position of a ntype semiconductor is generally 0.1 V lower than its flat band potential, [42][43][44] so the lowest unoccupied molecular orbital (LUMO) position of Co-ZIF-9 is À 0.47 V and the corresponding highest occupied molecular orbital (HOMO) position is + 1.51 V.…”

“…[1][2][3][4][5][6] Their unique properties, such as tunable pore size, large surface area and designable framework structure have endowed them various applications in gas adsorption and separation, [3] chemical sensing, [4] drug delivery [5] and heterogeneous catalysis. [6] In particular, many MOFs have shown semiconductor-like characters in photocatalysis and have been demonstrated to be promising photocatalysts for CO 2 reduction, [2,7,8] water splitting, [1,9,10] pollutant degradation, [11,12] as well as organic synthesis. [10,13] However, the MOF-based photocatalysts developed to date still suffer from insufficient photocatalytic efficiency, mainly due to the low efficiency in light harvesting and the fast recombination of the photoexcited electron-hole pairs.…”

“…In contrast, the reports using MXene as a co-catalyst to boost the photocatalytic efficiency of MOFs are relatively scarce. [11,32] As a MOF material, Co-ZIF-9, constructed from Co 2 + and imidazolate organic ligands, possess considerable chemical and thermal stability with great potential for CO 2 photoreduction. [14,[33][34][35][36] For example, Wang and coworkers used Co-ZIF-9 as co-catalyst to boost the photocatalytic activity of [Ru(bpy) 3 ]Cl 2 • 6H 2 O, g-C 3 N 4 and CdS for photoreduction of CO 2 .…”