Highly efficient photocatalytic hydrogen evolution and simultaneous formaldehyde degradation over Z-scheme ZnIn2S4-NiO/BiVO4 hierarchical heterojunction under visible light irradiation

The Oxygen Vacancy Defect of ZnO/NiO Nanomaterials Improves Photocatalytic Performance and Ammonia Sensing Performance

“…The degradation of organic dyes, such as methylene blue and rhodamine B, by NiO nanoparticles has been reported. Additionally, it has good gas-sensitive performance [ 21 , 22 , 23 , 24 ]. Bai et al successfully synthesized rGO–NiO/ZnO composite materials by the hydrothermal method and hydrazine hydrate reduction method, and used them for the detection of NO 2 .…”

Triptycene-Based Polymer Embedded in ZnIn2S4 to Construct a Hierarchical Heterostructure for Efficient Photocatalytic Hydrogen Evolution

“…In addition, with the increasing amount of ZnIn 2 S 4 , the characteristic peak intensities of ZnIn 2 S 4 are gradually improved, indicating the successful synthesis of the composites. Figure 1b shows the solid-state 13 C NMR spectrum of ZIS/TCP-2. The characteristic peak at 53 ppm belongs to two bridged carbon atoms derived from triptycene unit, those at 123 (126) ppm are ascribed to the aromatic carbons of boronic acid, and those at 139 (144) ppm are due to bridging methanetriyl carbon, which is consistent with pristine TCP in our previous literature, indicating that the TCP structure in composite is intact via an in situ growth approach.…”

“…Photocatalytic H 2 generation from water is an important research area in remediation of energy and environment issues by numerous semiconductors. − Among these photocatalysts for H 2 production, ternary sulfide ZnIn 2 S 4 is one of the most popular candidates because of its 2D ultrathin layered structure and suitable band gap (2.3–2.5 eV) for an excellent visible-light response. − ZnIn 2 S 4 possesses different phase structures such as cubic and hexagonal lattices, both indicating the activity and stability for H 2 evolution. , Nonetheless, the low surface area, fast recombination, and low transfer ability of photoexcited electron–hole pairs still restrict the photocatalytic performance of ZnIn 2 S 4 . Many efforts like integrating with other semiconductors can be used to enhance the separation efficiency of charge carriers over ZnIn 2 S 4 , such as UIO-66/ZnIn 2 S 4 , Au-MoS 2 /ZnIn 2 S 4 , ZnIn 2 S 4 –NiO/BiVO 4 , Co 9 S 8 @ZnIn 2 S 4 , In 2 O 3 /ZnIn 2 S 4 , and ZnIn 2 S 4 /CdIn 2 S 4 , which can establish a heterojunction to accelerate the generation and transfer of photoinduced electrons. − Therefore, the formation of heterostructures through in situ growth of another porous semiconductor on ZnIn 2 S 4 could provide a promising approach to modify ZnIn 2 S 4 by strong interactions.…”

Shining light on ZnIn2S4 photocatalysts: Promotional effects of surface and heterostructure engineering toward artificial photosynthesis

“…Under light irradiation at 420 nm, ZnIn 2 S 4 will be excited to form electron–hole pairs, followed by the transfer of electrons to the neighboring PPy for HER, while the as‐excited holes on the VB of ZnIn 2 S 4 will take part in the BDM upgrading oxidation. Several other potential works such as the implementation of ZnIn 2 S 4 ‐NiO/BiVO 4 in simultaneous HER and formaldehyde degradation as well as AgVO 3 /ZnIn 2 S 4 in the reduction of Cr(VI) and degradation of 2‐mercaptobenzothiazole and ciprofloxacin have further highlighted the superb performance of ZnIn 2 S 4 in solar‐to‐chemical conversion while generating value‐added products 46,157 …”

“…Several other potential works such as the implementation of ZnIn 2 S 4 -NiO/BiVO 4 in simultaneous HER and formaldehyde degradation as well as AgVO 3 /ZnIn 2 S 4 in the reduction of Cr(VI) and degradation of 2-mercaptobenzothiazole and ciprofloxacin have further highlighted the superb performance of ZnIn 2 S 4 in solar-to-chemical conversion while generating value-added products. 46,157 In the route of constructing Schottky junction, the employment of Ti 3 C 2 MXene is regarded cost-effective to be incorporated with ZnIn 2 S 4 photocatalysts for tailored charge dynamics and minimized barriers, in addition to the function as support and electron trapper. However, the allocation of the functional groups, which terminate MXene surfaces, requires thorough experimental study in revamping the formation and distribution of these termination groups for an augmented photocatalytic behavior.…”