NiS/MoS2 Mott-Schottky heterojunction-induced local charge redistribution for high-efficiency urea-assisted energy-saving hydrogen production

Recent Progress in Transition-Metal Sulfide Catalyst Regulation for Improved Oxygen Evolution Reaction

“…The surface engineering by etching, cation or anion substituting, and heteroatom doping for transition-metal sulfide can effectively improve their activity, , and the enhanced catalytic activities were attributed to the synergistic defects or vacancy sites on the surfaces. − Thus, the introduction of defects and vacancies to the catalyst surface is considered to be one of the most effective surface decoration strategies to generate more active sites and promote the charge transfer ability. , Therefore, the electrocatalytic activity is boosted, because of not only the increased active surface area but also the optimized adsorption capacity of the reaction intermediates. , In addition, the defect can also increase the hydrophilicity of the surface to effectively contact the electrolyte . The vacancy is formed by the loss of one or several atoms in the crystal lattice of a metal compound without phase modification, which will cause the electronic structure change of the nearby metal atoms; the defect and vacancy formed in the catalyst system, which, thereby, will impact the adsorption of intermediates during the OER process, and the performance can be boosted as expected. − …”

“…120,121 Therefore, the electrocatalytic activity is boosted, because of not only the increased active surface area but also the optimized adsorption capacity of the reaction intermediates. 122,123 In addition, the defect can also increase the hydrophilicity of the surface to effectively contact the electrolyte. 124 The vacancy is formed by the loss of one or several atoms in the crystal lattice of a metal compound without phase modification, which will cause the electronic structure change of the nearby metal atoms; the defect and vacancy formed in the catalyst system, which, thereby, will impact the adsorption of intermediates during the OER process, and the performance can be boosted as expected.…”

Reactive template-engaged synthesis of Ni-doped Co3S4 hollow and porous nanospheres with optimal electronic modulation toward high-efficiency electrochemical oxygen evolution

“…and micro/nano-structure engineering represent two universal and powerful strategies. 25–29 It is well-reported that the incorporation of a metal cation (such as Fe, Ni, Co, Mo, etc. ) with different ionic radii and valence states into the lattice of TMSs could significantly regulate the electronic configuration, modify the d-band center of active sites, enhance the electrical conductivity, and tailor the adsorption free energy of oxygen-involved intermediate species, which synergistically contribute to the enhancement of the intrinsic activity.…”

The Mott–Schottky heterojunction MoC@NG@ZIS with enhanced kinetic response for promoting photocatalytic hydrogen production

“…16,17 In pursuit of higher photocatalytic hydrogen production activity, the construction of Mott-Schottky heterojunctions by combining photon capturers with electrocatalysts with excellent photoelectrochemical properties is an effective means. 16,18,19 Mott-Schottky heterojunctions not only improve the charge kinetics by enhancing charge separation and transfer, but also increase the reaction kinetics for redox reactions by exploiting the high activation capacity of electrocatalysts. [18][19][20][21][22] For example, the Ru-WO 2.72 Mott-Schottky heterojunction exhibited enhanced hydrogen production activity by electron redistribution.…”

“…16,18,19 Mott-Schottky heterojunctions not only improve the charge kinetics by enhancing charge separation and transfer, but also increase the reaction kinetics for redox reactions by exploiting the high activation capacity of electrocatalysts. [18][19][20][21][22] For example, the Ru-WO 2.72 Mott-Schottky heterojunction exhibited enhanced hydrogen production activity by electron redistribution. 19 Liu et al loaded metalphase ReS 2 nanosheets on BaTiO 3 nanorods via Re-O covalent bonds to form a Mott-Schottky heterojunction, which provides plentiful channels for charge transfer and achieves ultraefficient degradation of pollutants.…”