0D (MoS2)/2D (g-C3N4) heterojunctions in Z-scheme for enhanced photocatalytic and electrochemical hydrogen evolution

Construction of 3DOM Carbon Nitrides with Quasi‐Honeycomb Structures for Efficient Photocatalytic H2 Production

“…When the light is irradiated, the quasi‐honeycomb structure can reflect sunlight many times, thus increasing the utilization ratio of sunlight and generating much more carriers, which is beneficial to the improvement of the photocatalytic property. Furthermore, electrons in the valence band of g‐C 3 N 4 are photo‐excited into the conduction band under visible light irradiation, leading to the generation of holes in the valence band . At the same time, holes from the valence band are consumed by the electron donor TEOA .…”

“…However, the traditional two‐dimensional layered g‐C 3 N 4 has low photocatalytic activities due to the narrow visible light response range, high recombination probability of electron‐hole, low quantum efficiency, and small specific surface area ,,. In order to overcome these inherent defects in g‐C 3 N 4 , a variety of improvement strategies have been proposed, including element doping, heterojunction structure and precious metal sensitization .…”

The high photocatalytic efficiency and stability of LaNiO3/g-C3N4 heterojunction nanocomposites for photocatalytic water splitting to hydrogen

“…as one of the best π-conjugated carbonaceous materials, also having larger surface area, high thermochemical stability, excellent electronic properties and suitable forbidden band width (2.7 eV) (35)(36)(37)(38)(39). More importantly, simple preparation process and cheap raw materials made g-C3N4 become a promising and popular material for photocatalytic reactions, as we can found, Fe2O3/g-C3N4, MoS2/g-C3N4, CsPbBr3/ g-C3N4, BaTiO3/g-C3N4 (40)(41)(42)(43) and so on materials had already been reported in the past few years. Ke Xu et al combined g-C3N4 with LaFeO3 to prepare a heterogeneous composite material (44), which slightly improved the catalytic activity for water splitting compared to pure LaFeO3.…”

Upgrading iron and removing phosphorus of high phosphorus oolitic iron ore by segregation roasting with calcium chloride and calcium hypochlorite

“…Meanwhile, due to its low Fe content, poor liberation, and complicated composition, satisfactory processing method with acceptable cost that can effectively utilize the ore is still lacking. However, it is feasible and sometimes necessary to modify the properties before direct beneficiation using various roasting methods [6][7][8][9], e.g., microwave roasting [10], salt roasting [11,12], sulfur-fixed roasting [13] and sintering roasting modelling [14], and sulphating roasting [15][16][17]. Segregation roasting, a technology that applies to the theory of chlorination metallurgy, shows excellent performance in extracting valuable compositions and removing harmful ones from complex refractory iron ore.…”