Cocatalyst decorated ZnIn2S4 composites for cooperative alcohol conversion and H2 evolution

Tan, Changlong; Qi, Ming‐Yu; Tang, Zi‐Rong; Xu, Yi–Jun

doi:10.1016/j.apcatb.2021.120541

Cited by 165 publications

(67 citation statements)

References 46 publications

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“…[24] It is clearly seen from Figure 10b that the semicircle of the 10% WP/ZnIn 2 S 4 sample has the smallest radius and the lowest electron transfer resistance. [28] This phenomenon witnesses that the hybridization of amorphous WP can significantly promote the interfacial electron transfer and separation between amorphous WP and ZnIn 2 S 4 . Furthermore, Figure 10c shows the linear sweep voltammetry curves of ZnIn 2 S 4 and WP/ZnIn 2 S 4 samples.…”

Section: Photocatalytic Mechanism For H 2 Evolutionmentioning

confidence: 98%

“…[66] It can be seen from PL and time-resolved fluorescence spectra (TRPL) that amorphous WP can effectively capture photogenerated electrons on the surface of ZnIn 2 S 4 , reduce the recombination rate of electron-hole pairs on the surface, and thus improve the activity of photocatalytic hydrogen production. [28] The EPR spectra were carried out to further investigate the existence of Zn and S vacancies. [67] The ZnIn 2 S 4 sample shows the sharply increased EPR signal at a g-factor of 2.009, confirming the abundant S-vacancies in ZnIn 2 S 4 (Figure 9c).…”

Section: Photocatalytic Mechanism For H 2 Evolutionmentioning

confidence: 99%

“…[27] In the S 2p spectrum of ZnIn 2 S 4 , it shows that the binding energies of S 2p 3/2 and S 2p 1/2 are centered at 161.86 and 163.04 eV, respectively (Figure 5d). [28,53] As for the W 4f spectrum of amorphous WP is shown in Figure 5e. It displays four peaks at 31.90, 34.34, 36.63, and 38.76 eV which correspond to W 4f 7/2 and W 4f 5/2 of WP and W 4f 7/2 and W 4f 5/2 of WO 3 , respectively.…”

Section: Structure and Morphology Analysismentioning

confidence: 99%

“…MoS 2 as a cocatalyst acts as an electronic relay station, which effectively promotes the separation and transfer of photocarriers in the composites, and significantly improves the photocatalytic performance. [28] More recently, Jin et al proposed a feasible strategy to enhance photocatalytic performance of ZnIn 2 S 4 modified by CuNi bimetal cocatalyst. The enhanced activity of Cu 2 Ni 1 -ZnIn 2 S 4 photocatalytic hydrogen evolution is mainly attributed to the synergistic effect between Cu and Ni and the spillover effect of H* migration from Ni to Cu.…”

Section: Introductionmentioning

confidence: 99%

“…[16] In order to improve the efficiency of solar energy for producing hydrogen from water splitting, many methods have been adopted to improve the photocatalytic activity of ZnIn 2 S 4 , such as morphology regulation, [17][18][19] element doping, [20,21] heterojunction construction, [22][23][24][25][26] and loading cocatalysts. [27][28][29][30][31][32] For example, Xing et al reported that ZnIn 2 S 4 flower-like microspheres doped with Mo increased the hydrogen production rate to 4.62 mmol h −1 g −1 , which is 10 times greater than that of pure ZnIn 2 S 4 . [21] Recently, it is reported that a 0D NiSe 2 nanoparticles/2D ZnIn 2 S 4 microflowers heterojunction was designed for enhanced photocatalytic hydrogen evolution.…”

mentioning

confidence: 99%

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Amorphous WP‐Modified Hierarchical ZnIn₂S₄ Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H₂ Evolution

Hao

Shao

Xiang

et al. 2022

Adv Materials Inter

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The morphology design and loading of cocatalyst are effective strategies to enhance the light absorption capacity and separation efficiency of photogenerated carriers. This work successfully fabricates amorphous tungsten phosphide (WP)/hierarchical ZnIn2S4 nanoflowers heterostructure (WP/ZnIn2S4) with boosting interfacial charge separation for photocatalytic H2 evolution. The maximum H2 production rate of 6178 µmol g–1 is achieved over 10% WP/ZnIn2S4 photocatalyst within 5 h, which is four times higher than that of pure ZnIn2S4. And a high photostability is also obtained. The enhanced photocatalytic hydrogen evolution activity can be attributed to the synergistic effect of amorphous WP and hierarchical ZnIn2S4 nanoflowers. Amorphous WP as a cocatalyst can rapidly capture photogenerated electrons on the surface of ZnIn2S4, improving the separation of photogenerated electron‐hole pairs. And the ZnIn2S4 microflower with ultrathin nanosheets structure exposes more surface sites to anchor amorphous WP nanoparticles, which provides more active sites for hydrogen evolution. Additionally, amorphous WP greatly increases the light absorption range and prolongs the fluorescence lifetime of ZnIn2S4. This work provides a new idea for designing an effective cocatalyst‐modified semiconductor to improve photocatalytic activity.

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Section: Photocatalytic Mechanism For H 2 Evolutionmentioning

confidence: 98%

Section: Photocatalytic Mechanism For H 2 Evolutionmentioning

confidence: 99%

Section: Structure and Morphology Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Amorphous WP‐Modified Hierarchical ZnIn₂S₄ Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H₂ Evolution

Hao

Shao

Xiang

et al. 2022

Adv Materials Inter

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Tailor‐Engineered 2D Cocatalysts: Harnessing Electron–Hole Redox Center of 2D g‐C₃N₄ Photocatalysts toward Solar‐to‐Chemical Conversion and Environmental Purification

Ling

Ong

2022

Adv Funct Materials

135

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Sparked by natural photosynthesis, solar photocatalysis using metal‐free graphitic carbon nitride (g‐C3N4) with appealing electronic structure has turned up as the most captivating technique to the quest for sustainable energy generation and pollution‐free environment. Nonetheless, low‐dimensional g‐C3N4 is thwarted from sluggish kinetics and rapid recombination of photogenerated carriers upon light irradiation. Among multifarious modification strategies, engineering 2D cocatalysts is anticipated to accelerate redox kinetics, augment active sites and ameliorate electron–hole separation of 2D g‐C3N4 for boosted activity thanks to its face‐to‐face contact surface. It is of timely and technological significance to review the 2D/2D interfaces with state‐of‐the‐art 2D cocatalysts, spanning from carbon‐containing to phosphorus‐containing, metal dichalcogenide, and other cocatalysts. Fundamental principles for each photocatalytic application will be introduced. Thereafter, the recent advances of 2D/2D cocatalyst‐mediated g‐C3N4 systems will be critically evaluated based on their interfacial engineering, emerging roles, and impacts toward stability and catalytic efficiency. Importantly, mechanistic insights into the charge dynamics and structure–performance relationship will be deciphered. Last, noteworthy research directions are prospected to deliver insightful ideas for future development of g‐C3N4. Overall, this review is anticipated to serve as a scaffold and cornerstone in designing dimensionality‐dependent 2D cocatalyst‐assisted g‐C3N4 toward renewable energy and ecologically green environment.

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Carbon‐Dot‐Mediated Highly Efficient Visible‐Driven Photocatalytic Hydrogen Evolution Coupled with Organic Oxidation

Chen,

Liu,

Mao

et al. 2023

Adv Funct Materials

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Photocatalytic hydrogen evolution coupled with organic oxidation reaction is a promising alternative to water splitting, where the efficiency is limited due to the weak correlation between charge separation and surface redox reactions. Here, employing nickel phthalocyanine (NiPc) for hole extraction, NiPc‐modified carbon dots (CDs) are combined with Cu–In–Zn–S quantum dots (CIZS QDs) toward a profound understanding of electron/hole extraction and surface proton generation and reduction. The optimal hydrogen evolution rate reaches 4.10 mmol g−1 h−1 for CIZS/NiPc–CDs with l‐ascorbic acid for hole consumption, 8.10 times to that of CIZS QDs, which is further promoted to 11.12 mmol g−1 h−1 under electron/hole coextraction with Ni2+ introduction. For benzyl‐alcohol‐oxidation‐coupled H2 evolution, this strategy shows a more dramatic activity enhancement (19.54 times), which is also appliable to methanol‐ or furfuryl‐alcohol‐oxidation coupling systems with state‐of‐the‐art activities. Transient photovoltage spectroscopy and apparent kinetics analysis indicate, for the first time, a light‐induced electrocatalysis effect consistent with the Volmer–Heyrovsky process, which establishes a quasiquantitative basis for balancing charge extraction and surface reactions.

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Cocatalyst decorated ZnIn2S4 composites for cooperative alcohol conversion and H2 evolution

Cited by 165 publications

References 46 publications

Amorphous WP‐Modified Hierarchical ZnIn₂S₄ Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H₂ Evolution

Amorphous WP‐Modified Hierarchical ZnIn₂S₄ Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H₂ Evolution

Tailor‐Engineered 2D Cocatalysts: Harnessing Electron–Hole Redox Center of 2D g‐C₃N₄ Photocatalysts toward Solar‐to‐Chemical Conversion and Environmental Purification

Carbon‐Dot‐Mediated Highly Efficient Visible‐Driven Photocatalytic Hydrogen Evolution Coupled with Organic Oxidation

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Cocatalyst decorated ZnIn2S4 composites for cooperative alcohol conversion and H2 evolution

Cited by 165 publications

References 46 publications

Amorphous WP‐Modified Hierarchical ZnIn2S4 Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H2 Evolution

Amorphous WP‐Modified Hierarchical ZnIn2S4 Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H2 Evolution

Tailor‐Engineered 2D Cocatalysts: Harnessing Electron–Hole Redox Center of 2D g‐C3N4 Photocatalysts toward Solar‐to‐Chemical Conversion and Environmental Purification

Carbon‐Dot‐Mediated Highly Efficient Visible‐Driven Photocatalytic Hydrogen Evolution Coupled with Organic Oxidation

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Product

Resources

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Amorphous WP‐Modified Hierarchical ZnIn₂S₄ Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H₂ Evolution

Amorphous WP‐Modified Hierarchical ZnIn₂S₄ Nanoflowers with Boosting Interfacial Charge Separation for Photocatalytic H₂ Evolution

Tailor‐Engineered 2D Cocatalysts: Harnessing Electron–Hole Redox Center of 2D g‐C₃N₄ Photocatalysts toward Solar‐to‐Chemical Conversion and Environmental Purification