Non-metal doping induced dual p-n charge properties in a single ZnIn2S4 crystal structure provoking charge transfer behaviors and boosting photocatalytic hydrogen generation

Chong, Wei‐Kean; Ng, Boon‐Junn; Kong, Xin Ying; Tan, Lling‐Lling; Putri, Lutfi Kurnianditia; Chai, Siang‐Piao

doi:10.1016/j.apcatb.2023.122372

Cited by 58 publications

(18 citation statements)

References 57 publications

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“…The signals centered at 458.80 and 464.43 eV can be ascribed to the state of Ti 2p 3/2 and Ti 2p 1/2 in TMF, respectively, confirming that the elemental valence of Ti is +4 (Figure 5e). The peaks located at 1021.70 and 1044.67 eV are assigned to Zn 2p 3/2 and Zn 2p 1/2 , respectively 61 (Figure 5f). For the In 3d spectra of ZIS, the peaks located at 444.79 and 452.34 eV corresponded to the 3d 3/2 and 3d 1/2 signals, respectively 62 (Figure 5g).…”

Section: Resultsmentioning

confidence: 99%

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn₂S₄ Core–Shell Heterostructures

Huang

Wang

et al. 2023

Inorg. Chem.

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Intimate interface design at the molecular level in heterojunctions deserves significant attention since the charge transfer efficiency at the interfaces can greatly affect the catalytic performance. Herein, an efficient interface engineering strategy was reported to design a titanium porphyrin metal−organic framework−ZnIn 2 S 4 (TMF−ZIS) core−shell heterojunction which is tightly connected via coordination bonds (−N−Zn−). Such interfacial chemical bonds as the directional carrier transfer channels afforded improved charge separation efficiency compared to the physical composite of TMF and ZIS without chemical bonding. As a result, the optimized TMF−ZIS composite showed a 13.37 mmol•g −1 •h −1 H 2 production which is 47.7, 3.3, and 2.4 times that of TMF, ZIS, and mechanical mixing samples, respectively. Moreover, the composite also exhibited high photocatalytic tetracycline hydrochloride (TCH) degradation efficiency. Profiting from the core−shell structures, the ZIS shell efficiently prevented the aggregation and photocorrosion of TMF core particles which afforded enhanced chemical stability. Such an interface engineering strategy will be a versatile method to obtain highly effective organic−inorganic heterojunctions and offer new ideas for modulating the interfaces in the heterojunctions at the molecular level.

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Section: Resultsmentioning

confidence: 99%

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn₂S₄ Core–Shell Heterostructures

Huang

Wang

et al. 2023

Inorg. Chem.

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“…The activity of the developed photocatalyst in the study is then compared and found to be competent with other modern photocatalysts as shown in Table S6. ,− Further, the purity of the generated hydrogen gas from the 0.2:1-CeO 2 @NiMOF photocatalyst is analyzed by gas chromatography with nitrogen gas of high purity (99.99%) as the carrier gas (Figure B). The hydrogen gas evolved from the 0.2:1-CeO 2 @NiMOF photocatalyst is 97.37% pure (Table S7).…”

Section: Resultsmentioning

confidence: 99%

Tuning and Sustainment of High Surface Area of Nano CeO₂-Anchored NiMOF Flake Heterojunctions for Efficient Photocatalytic Hydrogen Generation

Meera,

Hossain,

Shafna

et al. 2023

Energy Fuels

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The approach for promoting the tunable photochemical properties of NiMOF for catalytic applications has been recognized as a smart choice for solar water splitting. However, the major concern is the low specific surface area (SSA). The present approach has specifically resolved this problem by tuning the nature of the surface of NiMOF by anchoring with ultranano-sized CeO 2 . The CeO 2 (111) plane has a strong electron migrating affinity, and hence, the heterojunction significantly facilitates and directs the photoinduced electrons toward the reaction centers. In addition, the existence of NiMOF with switchable valence states as catalytic centers in the heterojunction also efficiently catalyzes the proton reduction. The enhancement in SSA of NiMOF and the surface tuning with ultranano-sized CeO 2 are the key reasons for the observed higher activity (2.14 mmol/g/h) of the 0.2:1-CeO 2 @ NiMOF hybrid composite with a high AQE value (18.82% at 320 nm). The results obtained are compared and found to be highly competitive with respect to high standard recent reports.

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“…In addition to the introduction of metal defects by adding metal elements to the precursor, nonmetal elements can be introduced similarly. For instance, Chong et al [80] directly added dimethylformamide (DMF) to the precursor solution to synthesize an N-ZnIn 2 S 4 photocatalyst. The X-ray photoelectron spectroscopy (XPS) results revealed that the introduced N atoms replaced specific sulfur sites.…”

Section: Pretreatment-based Defect Preparation and Applicationsmentioning

confidence: 99%

The Positive Versus Negative Effects of Defect Engineering for Solar Water Splitting: A Review

Huang,

Meng,

et al. 2023

Adv Funct Materials

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Although defect design is an essential means of improving the performance of photocatalytic materials, defect introduction is not always beneficial. Current defect engineering focuses on avoiding or modifying introduced defects to mitigate their adverse effects on solar water splitting performance. This review comprehensively summarizes the strategies for defect introduction and discusses their crucial roles in solar water splitting. Focusing on the dual effects of defects, the most basic schemes for preparing favorable defects through pretreatment and posttreatment methods are reviewed. In addition, the review focuses on strategies for overcoming or mitigating the detrimental effects of defects to improve the performance of photocatalysts. Finally, the challenges and prospects of developing a defect‐based photocatalyst design strategy are outlined. This review provides a reference for preparing defect‐based photocatalysts for conducting more in‐depth research on defects. Additionally, it offers ideas for utilizing unfavorable defects and converting them into favorable defects for performance improvement.

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Non-metal doping induced dual p-n charge properties in a single ZnIn2S4 crystal structure provoking charge transfer behaviors and boosting photocatalytic hydrogen generation

Cited by 58 publications

References 57 publications

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn₂S₄ Core–Shell Heterostructures

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn₂S₄ Core–Shell Heterostructures

Tuning and Sustainment of High Surface Area of Nano CeO₂-Anchored NiMOF Flake Heterojunctions for Efficient Photocatalytic Hydrogen Generation

The Positive Versus Negative Effects of Defect Engineering for Solar Water Splitting: A Review

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Non-metal doping induced dual p-n charge properties in a single ZnIn2S4 crystal structure provoking charge transfer behaviors and boosting photocatalytic hydrogen generation

Cited by 58 publications

References 57 publications

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn2S4 Core–Shell Heterostructures

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn2S4 Core–Shell Heterostructures

Tuning and Sustainment of High Surface Area of Nano CeO2-Anchored NiMOF Flake Heterojunctions for Efficient Photocatalytic Hydrogen Generation

The Positive Versus Negative Effects of Defect Engineering for Solar Water Splitting: A Review

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Product

Resources

About

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn₂S₄ Core–Shell Heterostructures

Boosted Charge Transfer via Coordinate Bond Construction in Porphyrin Metal–Organic Framework/ZnIn₂S₄ Core–Shell Heterostructures

Tuning and Sustainment of High Surface Area of Nano CeO₂-Anchored NiMOF Flake Heterojunctions for Efficient Photocatalytic Hydrogen Generation