Photocatalytic hydrogen generation from a visible-light responsive metal–organic framework system: the impact of nickel phosphide nanoparticles

Abstract

We showcase the key role of the co-catalyst when combined with MIL-125-NH2 towards the photocatalytic H2 generation.

MOF-templated cobalt nanoparticles embedded in nitrogen-doped porous carbon: a bifunctional electrocatalyst for overall water splitting

“…1,2 Hydrogen, is considered as the best eco-friendly source of energy that can be generated in the most viable way, through photo-/electrochemical water splitting. [3][4][5][6][7][8][9] However, this "green" energy storage and conversion process entirely depends upon the efficiency of the watersplitting electro-catalytic systems. Due to the sluggish kinetics and high activation overpotentials associated with these reactions (hydrogen evolution reaction (HER) and oxygen evolution reaction (OER)) in each of the proton coupled electron transfer steps, the current challenge is to develop highly efficient and active electrocatalysts that can overcome the kinetic barriers for these processes.…”

Photocatalytic Hydrogen Generation from a Visible-Light-Responsive Metal–Organic Framework System: Stability versus Activity of Molybdenum Sulfide Cocatalysts

“…Interestingly, there are also a few reports indicating that suitable earth-abundant cocatalysts can promote H 2 generation, 9 , 10 and some of them, such as a Co complex or Ni 2 P NPs, can outperform Pt NPs with the same MOF in terms of H 2 evolution rate and apparent quantum yields. 11 − 13 The fact that a careful choice of the cocatalyst can significantly enhance the H 2 generation performance adds a new dimension to this system since the number of possible earth-abundant complexes and NPs with oxides, sulfides, phosphides, or nitrides is essentially limitless. In this work, we investigate the efficiency of molybdenum sulfide-based cocatalysts when combined with MOFs.…”

Photoluminescent, upconversion luminescent and nonlinear optical metal-organic frameworks: From fundamental photophysics to potential applications

“…Eu III , (x = 0.0066 and 0.0089), the emission intensity of Tb III at 542 nm decreases dramatically while that of Eu III at 612 nm increases significantly at the same time over the temperature range of 77 -450 K. A linear relationship between the temperature and the emission intensity ratios was established, ITb/IEu = 13.516 -0.0319T and ITb/IEu = 9.107 -0.0207T for x = 0.0066 and 0.0089, with the corresponding relative sensitivities at 450 K of 3.76 % K -1 and 2.71 % K -1 , respectively. Although these values are not excellent, this work illustrated the potential of 19 as a luminescent thermometer for a pretty wide range of temperature, including the cryogenic region (100-298 K), the physiological temperature The mixed lanthanide MOF(20), however, displays emissions of both Nd III and Yb III , implying that energy transfer from Nd III to Yb III occurred(Figure 12). When temperature is increased from 293 to 313 K, the intensity of the 980 nm emission of Yb III ( 2 F5/2 -2 F7/2) also increases rapidly while the intensity of the 1060 nm emission of Nd III ( 4 F3/2 -4 I11/2) remains the same until 308 K and then slightly increases afterwards.…”

“…This makes MOFs strikingly different from other porous solids such as zeolites, silica, or activated carbon, and allows them to be used in a wide range of applications. [6][7][8] Besides being excellent candidates for gas capture, storage and separation [9][10][11][12][13][14], MOFs have also been employed in areas such as catalysis [15][16][17][18][19][20], sensing [21][22][23], nonlinear optics [24], ferroelectricity [25], magnetism [26], electrical conductivity [27][28][29][30], and drug delivery [31][32][33][34]. In recent years, light-emitting MOFs have been in the limelight and in fact, there have already been many great reviews on photoluminescent and nonlinear optical MOFs [24,[35][36][37][38][39].…”