Symbiotic MoO₃–SrTiO₃ Heterostructured Nanocatalysts for Sustainable Hydrogen Energy: Combined Experimental and Theoretical Simulations

MoS2 Nanoflower-Deposited g-C3N4 Nanosheet 2D/2D Heterojunction for Efficient Photo/Electrocatalytic Hydrogen Evolution

“…To achieve the maximum light harvesting and surface reactions, numerous strategies have been adopted, such as heteroatomic doping, heterostructure formation, , and modification of the thickness of g-C 3 N 4 nanosheets . Among these, heterostructure formation plays a vital role in advancing the field of photocatalysis. − Heterostructures showed effective electron–hole pair separation, prolonged light absorption, and synergistic effects that boost the catalytic activity of the materials. − In this regard, we have fabricated a Z-scheme MoS 2 /g-C 3 N 4 heterostructure that aids in suppressing the natural back reaction (e–h+ pair recombination), enhances the conductivity, and increases the catalytically active sites of g-C 3 N 4 for HER. , Therefore, MoS 2 /g-C 3 N 4 heterostructured catalytic systems can accelerate the HER efficiency through Z-scheme band alignment of their band structures, which eases out the transfer of electrons through interface electron channels . The interfacial layered engineering is feasible in a MoS 2 /g-C 3 N 4 system owing to the analogous layered structure that subdues the lattice mismatch between them by forming a homogeneous 2D/2D nanohybrid through the planar growth of MoS 2 layers over g-C 3 N 4 , Therefore, with the aim of exploiting synergistic effects between these two semiconductors, herein, we have fabricated MoS 2 /g-C 3 N 4 heterostructured catalysts for determining their excellence toward PC, EC, and PEC water splitting.…”

Preparation of NiMoO4/CdS and its Application as a Photocatalyst in H2 Evolution Reaction

“…prepared the MoO 3 ‐SrTiO 3 heterostructure photocatalyst. When the MoO 3 loaded is 2 mol %, the MoO 3 ‐SrTiO 3 sample shows the highest photocatalytic H 2 evolution rate of 2.03 mmolh −1 g‐cat −1 , which is about 4 times that of pure SrTiO 3 [13] . NiMoO 4 has a suitable band gap (2.54–2.99 eV), tunable band structure, low cost and good light stability, [14] which is an attractive material to combine with CdS for achieving heterojunction.…”

“…When the MoO 3 loaded is 2 mol %, the MoO 3 -SrTiO 3 sample shows the highest photocatalytic H 2 evolution rate of 2.03 mmolh À 1 g-cat À 1 , which is about 4 times that of pure SrTiO 3 . [13] NiMoO 4 has a suitable band gap (2.54-2.99 eV), tunable band structure, low cost and good light stability, [14] which is an attractive material to combine with CdS for achieving heterojunction. Zhao et al [15] reported that NiMoO 4 shows considerable chemical stability, electrochemical activity and electrical conductivity, which has been widely used in the electrode materials of lithium batteries, photodetectors, solar cells, photoelectric devices and other fields.…”

Unveiling the Bifunctional Photo/Electrocatalytic Activity of In Situ Grown CdSe QDs on g-C3N4 Nanosheet Z-Scheme Heterostructures for Efficient Hydrogen Generation

“…Additionally, its spatial charge density flow and molecular structure have been investigated from computational perspectives . The inability of g-C 3 N 4 -based photocatalysts to respond to visible light and their inability to separate photogenerated carriers limit their solar energy conversion efficiency. , To solve such problems listed above, a lot of work has been done to introduce defects into the g-C 3 N 4 structure through structural engineering, doping with metals, and coupling with other semiconductors. , It has been demonstrated that the adding defects not only provide active sites for photocatalytic reactions but also provide distinct energy levels by regulating band gap engineering. − Additionally, the defects have the ability to remarkably reduce the recombination of electron–hole pairs and serve as trapping sites for photoexcited charge carriers. , Recent research has focused on photo/electrocatalysts with tunable hierarchical quantum dots (QDs)/nanostructures due to their greater surface area, more active sites, and efficient light harvesting for boosting photo/electrocatalytic activity in overall water splitting reactions. Furthermore, QDs can have their chemical compositions and hierarchical structures altered to improve their ability to separate charges and conduct electricity. − …”