Visible light-driven dehydrocoupling of thiols to disulfides and H2 evolution over PdS-decorated ZnIn2S4 composites

Li, Xiao-Juan; Qi, Ming-Yu; Li, Jing-Yu; Tan, Chang-Long; Tang, Zi-Rong; Xu, Yi-Jun

doi:10.1016/s1872-2067(23)64481-x

Cited by 35 publications

(3 citation statements)

References 63 publications

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“…These distinct peaks indicate the chemical state of In 3+ . 42,43 The Sn 3d binding energy exhibited a negative energy shift for Li 2 Sn 0.90 In 0.10 O 3 relative to that of pure Li 2 SnO 3 (Figure 2c). The specific binding energies of Sn 3d 3/2 and Sn 3d 5/2 in Li 2 SnO 3 are 495.4 and 486.9 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Mechanism of p-Type Heteroatom Doping of Lithium Stannate for the Photodegradation of 2,4-Dichlorophenol: Enhanced Hole Oxidative Capability and Concentrations

Yang,

Pu,

Dai

et al. 2024

Inorg. Chem.

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A systematic evaluation of enhancing photocatalysis via aliovalent cation doping is conducted. Cation In 3+ , being p-type-doped, was chosen to substitute the Sn site (Sn 4+ ) in Li 2 SnO 3 , and the photodegradation of 2,4-dichlorophenol was applied as a model reaction. Specifically, Li 2 Sn 0.90 In 0.10 O 3 exhibited superior catalytic performance; the photodegradation efficiency reached about 100% within only 12 min. This efficiency is far greater than that of pure Li 2 SnO 3 under identical conditions. Density functional theory calculations reveal that introducing In 3+ increased the electron mobility, yet decreased the hole mobility, leading to photogenerated carrier separation. However, photoluminescence and time-resolved photoluminescence suggest that In 3+ induced nonradiative coupling in the matrix, reducing the photogenerated carrier separation ratio compared with that of Li 2 SnO 3 . The optical band gap of Li 2 Sn 0.90 In 0.10 O 3 was almost unchanged compared with that of Li 2 SnO 3 via ultraviolet−visible absorption. The increased photocatalytic efficiency was ascribed to the lower valence band position and enhanced hole concentrations by valence band X-ray photoelectron spectroscopy and electrochemical measurements. Finally, a 2,4-dichlorophenol degradation pathway, an intermediate toxicity assessment, and a photocatalytic mechanism were proposed. This work offers insights into designing and optimizing semiconductor photocatalysts with high performance.

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Section: Resultsmentioning

confidence: 99%

Mechanism of p-Type Heteroatom Doping of Lithium Stannate for the Photodegradation of 2,4-Dichlorophenol: Enhanced Hole Oxidative Capability and Concentrations

Yang,

Pu,

Dai

et al. 2024

Inorg. Chem.

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“…In a different approach, PdS was used as an oxidation co-catalyst, capturing holes rather than electrons. [131] The energetic holes conveyed by PdS activate and cleave the SÀ H bond of RSH, leading to the formation of RS * intermediates and protons. Subsequently, the RS * intermediates effectively dimerize to yield SÀ S coupled products, while the protons are reduced to H 2 by the photo-generated electrons.…”

Section: Sà S Bond Formationmentioning

confidence: 99%

Zinc Indium Sulfide‐Based Photocatalysts for Selective Organic Transformations

Zhang,

Ye,

Liang

et al. 2024

ChemCatChem

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The burgeoning field of semiconductor‐mediated organic conversion is of paramount significance, with zinc indium sulfide (ZnIn2S4) emerging as a standout candidate owing to its benign nature, optimal bandgap, extensive light absorption spectrum, remarkable physicochemical properties, and straightforward synthesis. This review examines the latest breakthroughs and the trajectory of ZnIn2S4‐based photocatalysts in the realm of selective organic transformation. We start with a distinct overview of the intrinsic physical attributes of ZnIn2S4 and the underlying mechanisms driving its efficacy in photocatalytic organic transformations. Subsequently, the preparation methods of ZnIn2S4 are summarized. The main focus is the state‐of‐the‐art photocatalytic application of various ZnIn2S4‐based photocatalysts, such as redox reactions, the construction of C–C, C–S and S–S bonds, and the cleavage of C−O, C−C, and C=C bonds. In conclusion, we provide our perspectives on the prospective advancements and the remaining challenges that lie ahead in the optimization of ZnIn2S4‐based photocatalysts, with the ultimate goal of enhancing their efficacy for a diverse array of photosynthetic applications. It is anticipated to inspire the strategic engineering of ZnIn2S4 and other semiconductor‐based photocatalysts for various artificial photosynthesis reactions.

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“…Photocatalytic water splitting HER is a sustainable strategy for converting solar energy into clean fuel, which is a promising route to alleviate the energy crisis and environmental issues. − The conversion of the photo-to-chemical energy process is closely related to the properties of photocatalysts to light absorption, charge separation, and surface reaction. − As a class of crystalline porous polymers that have been linked by strong covalent bonds and arranged precisely, covalent organic frameworks (COFs) were widely studied in photocatalysis, thanks to the structure diversity, tunable bandgaps, and physicochemical stability. − Especially, triazine-based COFs with a high π-conjugate structure show excellent visible light-absorbing properties …”

Section: Introductionmentioning

confidence: 99%

Rational Regulation of the Exciton Effect of Acrylonitrile-Linked Covalent Organic Framework toward Boosting Visible-Light-Driven Hydrogen Evolution

Gao,

Yuan,

Wei

et al. 2023

ACS Catal.

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Covalent organic frameworks (COFs) exhibit relatively inefficient exciton dissociation and free charge generation, which arise from their high exciton binding energy. Here, a series of crystalline, acrylonitrile-linked COFs are fabricated to regulate exciton effects by strategies of shortening the linker length (TP-PN COF), introducing nitrogen atoms (TP-BPyN COF), and post-protonation (TP-BPyN PCOF). The temperature-dependent photoluminescence (PL) spectra and Nyquist plots reveal a decrease in exciton binding energy and charge transfer resistance of TP-PN COF, TP-BPyN COF, and TP-BPyN PCOF. Thus, an increase in free carrier generation and an extension of carrier lifetime are achieved, as demonstrated by transient photocurrents response and time-resolved fluorescence spectra (TRFS). DFT calculation reveals that low exciton binding energy and charge transfer resistance could relate to higher planarity structure. Besides, light absorption performance was improved by shortening the linker length, while the distribution density of Pt nanoparticles as H 2 evolution reaction (HER) sites was significantly improved by introducing nitrogen atoms as anchor points. As a result, the optimized TP-PN COF and TP-BPyN COF show efficient photocatalytic HER rates of 10,890 and 6457 μmol g −1 h −1 , respectively, improved by 13.92 and 8.26 times compared to that without modification (TP-BPN COF, 782 μmol g −1 h −1 ). Through a simple postprotonation strategy, the charge is redistributed and the structural distortion is reduced. Consequently, the HER rate of TP-BPyN PCOF significantly increased to 12,276 μmol g −1 h −1 . Meanwhile, the HER rate of TP-BPyN PCOF was further boosted to 15,929 and 22,438 μmol g −1 h −1 by optimizing the volume fractions of the sacrificial agent and the pH of the reaction system, respectively. This work could pave the way for developing efficient organic photocatalysts via rational regulation of the exciton effect.

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Visible light-driven dehydrocoupling of thiols to disulfides and H2 evolution over PdS-decorated ZnIn2S4 composites

Cited by 35 publications

References 63 publications

Mechanism of p-Type Heteroatom Doping of Lithium Stannate for the Photodegradation of 2,4-Dichlorophenol: Enhanced Hole Oxidative Capability and Concentrations

Mechanism of p-Type Heteroatom Doping of Lithium Stannate for the Photodegradation of 2,4-Dichlorophenol: Enhanced Hole Oxidative Capability and Concentrations

Zinc Indium Sulfide‐Based Photocatalysts for Selective Organic Transformations

Rational Regulation of the Exciton Effect of Acrylonitrile-Linked Covalent Organic Framework toward Boosting Visible-Light-Driven Hydrogen Evolution

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