Exploring the Defect Sites in UiO-66 by Decorating Platinum Nanoparticles for an Efficient Hydrogen Evolution Reaction

Abstract

UiO-66 has been tailored using defect engineering methodology to introduce thiol functionalities into the MOF skeletal structure. The thiolated UiO-66 serves as a scaffold to support the platinum nanoparticles with a size of ∼2 nm through a soft−soft interaction. This Pt@UiO-66-SH, utilized as an HER catalyst, exhibited an overpotential of 57 mV at a current density of 10 mA cm −2 in an acidic medium with a Tafel slope of 75 mV/dec and a high TOF value (389.37 s −1 ). This catalyst showed longterm durability for 30 h, specifying the potential of the material to produce neat hydrogen.

Three-Dimensional Network of Highly Uniform Cobalt Oxide Microspheres/MXene Composite as a High-Performance Electrocatalyst in Hydrogen Evolution Reaction

“…3 So far, there has been significant research conducted on Pt-based materials as electrocatalysts for the HER, mostly due to their advantageous characteristics such as little overpotential and a low Tafel slope. 5,6 Nevertheless, the limited availability, exorbitant expenses, and challenges pertaining to durability in the electrolyte during the process of electrolysis significantly constrain their potential for widespread commercial use. The worldwide scalability of possible clean-energy solutions might be achieved by using earth-abundant minerals as substitutes for Pt-based electrocatalysts.…”

“…The hydrogen evolution reaction (HER), which is the half-reaction involved in the process of water splitting, is widely recognized as a sustainable and highly efficient approach for hydrogen production . So far, there has been significant research conducted on Pt-based materials as electrocatalysts for the HER, mostly due to their advantageous characteristics such as little overpotential and a low Tafel slope. , Nevertheless, the limited availability, exorbitant expenses, and challenges pertaining to durability in the electrolyte during the process of electrolysis significantly constrain their potential for widespread commercial use. The worldwide scalability of possible clean-energy solutions might be achieved by using earth-abundant minerals as substitutes for Pt-based electrocatalysts. ,, Several first-row transition-metal compounds, such as oxides, sulfides, and phosphides, have recently gained attention as promising electrocatalysts for water splitting. − However, achieving further improvements in their electrochemical activity and durability through rational design and preparation techniques remains a challenging task .…”

Highly porous BiOBr@NU-1000 Z-scheme heterojunctions for synergistic efficient adsorption and photocatalytic degradation of tetracycline

“…[33][34][35] Notably, NU-1000 is a well-known MOF-based photocatalytic material with highly porous and crystalline properties. 36,37 In addition, the microporous (12 Å) and mesoporous (31 Å) channels in NU-1000 make it appropriate for use as a catalyst support or for the construction of heterojunction photocatalysts by integration with inorganic semiconductors. 38,39 For example, Lv et al 40 encapsulated high-nuclear nickel-containing polyoxometalate in NU-1000, showing excellent optical drive hydrogen evolution performance.…”

Construction of Natural Polysaccharide-Based pH-Responsive Gold Nanorods for Combined Photothermal Therapy and Immunotherapy

“…46 Moreover, Au(I) 4f 7/2 and Au(I) 4f 5/2 were also detected with binding energies of 85.0 and 89.2 eV, respectively, indicating the presence of thiol-bound Au(I). 47 In the high-resolution XPS spectra of S 2p, the deconvolution of the signal revealed four peaks (161.5, 162.6, 163.8, and 164.8 eV) (Figure 2G). Among them, the peaks at 161.5 and 162.6 eV were attributed to sulfur atoms covalently bound to gold atoms.…”