Understanding the unique Ohmic-junction for enhancing the photocatalytic activity of CoS2/MgIn2S4 towards hydrogen production

Li, Jiangshan; Yao, Jun; Yu, Qiang; Zhang, Xiao; Carabineiro, Sónia A.C.; Xiong, Xianqiang; Wu, Chenglin; Lv, Kangle

doi:10.1016/j.apcatb.2024.123950

Cited by 22 publications

(1 citation statement)

References 57 publications

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“…By analysing the intercept of the tangent line on the X axis, the flat band potential (Efb) of MIL-100(Fe) was calculated to be −0.60 V (vs. SCE). According to the equation E(vs. NHE) = E(vs. SCE) + 0.051pH + 0.24 [45][46][47], the flat band (Efb) was 0.083 (vs. NHE). The Mott-Schottky curve of MIL-100(Fe) showed a negative tangent slope indicating the presence of an n-type semiconductor.…”

Section: Degradation Pathwaymentioning

confidence: 95%

Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study

Chang,

Xu,

Huang

et al. 2024

Molecules

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With the rising incidence of various diseases in China and the constant development of the pharmaceutical industry, there is a growing demand for floxacin-type antibiotics. Due to the large-scale production and high cost of waste treatment, the parent drug and its metabolites constantly enter the water environment through domestic sewage, production wastewater, and other pathways. In recent years, the pollution of the aquatic environment by floxacin has become increasingly serious, making the technology to degrade floxacin in the aquatic environment a research hotspot in the field of environmental science. Metal–organic frameworks (MOFs), as a new type of porous material, have attracted much attention in recent years. In this paper, four photocatalytic materials, MIL-53(Fe), NH2-MIL-53(Fe), MIL-100(Fe), and g-C3N4, were synthesised and applied to the study of the removal of ofloxacin and enrofloxacin. Among them, the MIL-100(Fe) material exhibited the best photocatalytic effect. The degradation efficiency of ofloxacin reached 95.1% after 3 h under visible light, while enrofloxacin was basically completely degraded. The effects of different materials on the visible photocatalytic degradation of the floxacin were investigated. Furthermore, the photocatalytic mechanism of enrofloxacin and ofloxacin was revealed by the use of three trappers (®O2−, h+, and ®OH), demonstrating that the role of ®O2− promoted the degradation effect of the materials under photocatalysis.

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Section: Degradation Pathwaymentioning

confidence: 95%

Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study

Chang,

Xu,

Huang

et al. 2024

Molecules

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Enhanced Charge Transfer in Poly(Heptazine Imide) Synergistically Induced by Donor‐Acceptor Motifs and Ohmic Junctions for Efficient Photocatalytic CO₂ Reduction

Li,

Yang,

et al. 2024

ChemSusChem

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Poly(heptazine imide) (PHI) has received widely interest in the photocatalytic CO2 reduction due to its good crystallinity and complete in‐plane structure. However, its poor photo‐induced carrier separation and migration efficiency and insufficient active sites results in undesirable photocatalytic CO2 reduction performance. Herein, we designed and constructed a novel ohmic junction photocatalyst by integrating melamine edge‐modified PHI (mel‐PHI) with extended π‐conjugated system with TiN (TiN/mel‐PHI) for enhancing the photocatalytic CO2 reduction activity. Strikingly, the photocayalytic CO2 reduction yield of the optimal TiN/mel‐PHI is 62.64 µmol·g–1·h–1, which is 5.6 and 2.8 times higher than PHI (11.26 µmol·g–1·h–1) and mel‐PHI (22.32 µmol·g–1·h–1), respectively. The superior photocatalytic CO2 reduction activity is attributed not only to the formation of D‐A structure by the introduction of melamine, which extends the π‐conjugation system, alters the electronic structure of PHI, and accelerates the charge separation and migration, but also to the induced internal electric field by ohmic junction further enhances the charge separation and migration efficiency. Meanwhile, the synergistic effect of mel‐PHI and TiN enriched the electron number of TiN, reducing the CO2 reduction potential. This work highlights the synergistic enhancement of charge transfer between D‐A motifs and ohmic junctions, confirming their potential in optimizing photocatalysts.

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Simplistic preparation of Sn-doped MgIn2S4 for photocatalytic organic dye degradation under visible light irradiation

Guo,

Zhang,

Zhang

et al. 2024

J Mater Sci: Mater Electron

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Understanding the unique Ohmic-junction for enhancing the photocatalytic activity of CoS2/MgIn2S4 towards hydrogen production

Cited by 22 publications

References 57 publications

Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study

Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study

Enhanced Charge Transfer in Poly(Heptazine Imide) Synergistically Induced by Donor‐Acceptor Motifs and Ohmic Junctions for Efficient Photocatalytic CO₂ Reduction

Simplistic preparation of Sn-doped MgIn2S4 for photocatalytic organic dye degradation under visible light irradiation

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Understanding the unique Ohmic-junction for enhancing the photocatalytic activity of CoS2/MgIn2S4 towards hydrogen production

Cited by 22 publications

References 57 publications

Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study

Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study

Enhanced Charge Transfer in Poly(Heptazine Imide) Synergistically Induced by Donor‐Acceptor Motifs and Ohmic Junctions for Efficient Photocatalytic CO2 Reduction

Simplistic preparation of Sn-doped MgIn2S4 for photocatalytic organic dye degradation under visible light irradiation

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Product

Resources

About

Enhanced Charge Transfer in Poly(Heptazine Imide) Synergistically Induced by Donor‐Acceptor Motifs and Ohmic Junctions for Efficient Photocatalytic CO₂ Reduction