A new strategy: fermi level control to realize 3D pyramidal NiCo-LDH/ReS₂/n-PSi as a high-performance photoanode for the oxygen evolution reaction

Abstract

Loading ReS2 nanosheets (NSs) on planar p-type doping Si substrate has been proved that it can work well in photoelectrochemical (PEC) water splitting for hydrogen evolution reaction (HER). High PEC...

Photocatalytic Applications of ReS2-Based Heterostructures

“…The common precursors for the CVD synthesis of ReS 2 are ammonium rhenate (NH 4 ReO 4 ), Re powder [ 82 ], and rhenium-containing oxides (ReO 3 or Re 2 O 7 ), with sulfur powder used as the predominant sulfur source and heated in a different zone [ 33 , 85 , 86 ]. The ReS 2 prepared via the CVD method exists mostly in petal-like ReS 2 nanowalls arranged vertically without agglomeration [ 28 , 33 , 87 ]. Zhang et al anchored the ReS 2 nanowalls vertically on the surface of the Si/SiO 2 substrate ( Figure 2 i), which can distribute ultra-uniformly with a dense structure over a wide area ( Figure 2 j) [ 33 ].…”

“…The beneficial exposure of the (001) facet ensured that more active sites were accessible for hydrogen adsorption, consequently enhancing the catalytic activity. The growth of the ReS 2 single-crystal nanosheets does not need a polished substrate or a small lattice mismatch [ 87 ]. Cheng et al grew ReS 2 tightly on the TiO 2 -coated b-Si substrate with the shape of nanopyramids via the CVD method.…”

Rhenium-Based Electrocatalysts for Water Splitting

“…The pyramidal pattern of Si provides a 3D antireflection structure. Finally, a NiCo layered double hydroxide (LDH) was electrodeposited on the ReS 2 /n-PSi to enhance the photocurrent as a cocatalyst and protective layer . The catalytic activity of the electrode was measured in a 0.5 M Na 2 SO 4 aqueous solution.…”

Time-resolved XAS studies reveal sequential oxidative–reductive formation of Na-doped iridium oxide films with enhanced bio-stimulating performance

“…, in conjunction with the release of gaseous oxygen (eqn (7)). Subsequently, the absorption profiles labeled as d suggested that the overall oxidation state of iridium ion was increased again.…”

“…The fabrication of iridium oxide has been explored for several decades in applications including water splitting and pseudocapacitors. [1][2][3][4][5][6][7][8][9] It is because the iridium oxide is known as a conductive oxide with superb chemical inertness and electrocatalytic activity. Recently, owing to its impressive biocompatibility, the iridium oxide has been considered as a bio-stimulating electrode in implantable bio-electronics whose function is to provide electrical charges to stimulate neurons for the mitigation or remedy of neuronal disorders.…”