Constructing electrostatic self-assembled 2D/2D ultra-thin ZnIn2S4/protonated g-C3N4 heterojunctions for excellent photocatalytic performance under visible light

Yang, Hao; Cao, Ruya; Sun, Pengxiao; Yin, Jiangmei; Zhang, Shouwei; Xu, Xijin

doi:10.1016/j.apcatb.2019.117862

Cited by 199 publications

(80 citation statements)

References 56 publications

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“…[16] At the same time,the 10 %-Co 9 S 8 /ZnIn 2 S 4 composite in this study has ap eak external quantum efficiency (EQE) of 4.49 %a t4 20 nm and 0.007 %a t5 50 nm (Supporting Information, Table S2), indicating good photocatalytic activities in the wavelength range of 550 nm. [17] Thea s-prepared hierarchical hollow Co 9 S 8 /ZnIn 2 S 4 tubular heterostructures display satisfactory noble-metal-free H 2 generation rate and EQE relative to that reported in recent works (Supporting Information, Table S1). Thep hotocatalytic performance of water splitting was enhanced by the unique hierarchical hollow tubular heterostructures,w hich can promote the separation and transfer efficiency of photogenerated electrons and holes.T he photostability of the optimal Co 9 S 8 / ZnIn 2 S 4 composite was evaluated through the photocatalytic H 2 evolution reaction in the presence of aprolonged visiblelight irradiation of 25 h, and the H 2 evolution rate for every 5h reaction was calculated (Figure 4d).…”

Section: Resultsmentioning

confidence: 56%

Construction of Hierarchical Hollow Co₉S₈/ZnIn₂S₄ Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Zhang

Chen

et al. 2020

Angewandte Chemie

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Visible-light-responsive hierarchicalC o 9 S 8 /ZnIn 2 S 4 tubular heterostructures are fabricated by growing 2D ZnIn 2 S 4 nanosheets on 1D hollowC o 9 S 8 nanotubes.T his design combines two photoresponsive sulfide semiconductors in as table heterojunction with ah ierarchical hollowt ubular structure,i mproving visible-light absorption, yielding al arge surface area, exposing sufficient catalytically active sites,a nd promoting the separation and migration of photogenerated charges.T he hierarchical nanotubes exhibit excellent photocatalytic H 2 evolution and Cr VI reduction efficiency.U nder visible-light illumination, the optimizedCo 9 S 8 /ZnIn 2 S 4 heterostructure provides ar emarkable H 2 generation rate of 9039 mmol h À1 g À1 without the use of any co-catalysts and Cr VI is completely reduced in 45 min. The Co 9 S 8 /ZnIn 2 S 4 heterostructure is stable after multiple photocatalytic cycles.Scheme 2. Illustration of the transfer process of the photogenerated electrons (e À )a nd holes (h + )inthe Co 9 S 8 /ZnIn 2 S 4 heterostructure and the photocatalytic mechanism for Cr VI reduction and H 2 evolution under visible-light irradiation.

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Section: Resultsmentioning

confidence: 56%

Construction of Hierarchical Hollow Co₉S₈/ZnIn₂S₄ Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Zhang

Chen

et al. 2020

Angewandte Chemie

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“…21,22 Also, 0D or 1D materials have relatively long photogenerated charge-transfer distance, resulting in inefficient charge separation and transfer and consequently reduced photocatalytic activity. 23 Compared with 0D and 1D materials, CoP nanosheet with 2D structure is supposed to be a more appropriate co-catalyst for ZIS nanosheets, because the integration of 2D-2D CoP/ZIS can derive unique heterojunction structure with intimate contact and large interface, and thus provides plentiful charge-transfer channels and more active sites for catalytic reaction. In addition, the charge migration distance and time are shortened on 2D-2D CoP/ ZIS heterojunctions, which can enhance the charge mobility and separation efficiency on ZIS.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic self‐assembly of 2D‐2D CoP/ZnIn₂S₄ nanosheets for efficient photocatalytic hydrogen evolution

et al. 2020

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Constructing efficient and cost-effective photocatalysts are highly desirable for photocatalytic hydrogen evolution. Herein, we prepare a unique 2D-2D architecture photocatalyst composed of CoP and ZnIn 2 S 4 (ZIS) nanosheets through electrostatic self-assembly method. The constructed 2D-2D CoP/ZIS exhibit a remarkably enhanced photocatalytic performance with hydrogen production rate of 8.775 mmol g −1 h −1 , and this value is much higher than ZIS and most of other ZISbased nanohybrids. Additionally, the nanohybrids possess excellent stability with 96.3% of initial activity remaining after 24 hours of testing. These satisfactory results are attributed to the large/intimate contact interface and the photo/electro-chemical properties of ZIS and CoP, which improves light absorption, facilitates photoelectron transport and suppresses charge recombination. This work not only demonstrates ZIS nanosheet can serve as a versatile and effective platform supporting non-noble metal nanosheets to boost their photocatalytic performance, but also offers a general and simple electrostatic self-assembly method to design 2D-2D-based heterostructures for hydrogen conversion from water splitting.

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“…Mott‐Schottky curves were obtained under the dark at an AC frequency of 1.0 kHz with potential value ranged from −1.0 to 1.0 V vs Ag/AgCl/3 M KCl, the flat band potential (E FB ) of photoanodes can be inferred according to Equation . [ 43 ]

\frac{1}{{normalC}^{2}} = \frac{2}{N_{D} {eε}_{0} normalε} ((), normalE - E_{FB} - \frac{kT}{e})

…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic active silver organic framework: Ag(I)‐MOF and its hybrids with silver cyanamide

Song

Wang

Shi

et al. 2020

Applied Organom Chemis

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Probing into the new heterostructure based on metal–organic frameworks (MOFs) and optimizing their photocatalytic efficiency under solar energy irradiation are one of hot topics in extending applications of MOFs in photocatalytic technology. Inspired by the excellent visible‐light responses and photocatalytic activities of inorganic silver salts, in this work, we focused on the construction of hybrid photocatalysts involving Ag‐MOF and silver cyanamide (Ag2NCN). Two opposite in situ synthesis routes were adopted, which are hydrothermally producing Ag‐MOF in the presence of Ag2NCN (route A) or precipitating Ag2NCN in the existence of Ag‐MOF (route B), and the mass ratio of Ag2NCN vs. Ag‐MOF was optimized. The morphology and structure character show that the synthetic routes have no obvious influences on the crystal structure, but change the morphology and size of final hybrid photocatalysts. The photocatalytic degradation of Rhodamine B under simulated solar energy has been tested to evaluate the photocatalytic activities for resulting hybrids. Compared to single Ag‐MOF and Ag2NCN, the enhanced photocatalytic rates are represented by the hybrids. The electrochemical analyses and the active species trapping experiments were conducted to clarify the photocatalytic mechanism for resulting hybrids. The good recycling photocatalytic results indicate the prospect applications of Ag‐MOF based hybrid photocatalysts.

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Constructing electrostatic self-assembled 2D/2D ultra-thin ZnIn2S4/protonated g-C3N4 heterojunctions for excellent photocatalytic performance under visible light

Cited by 199 publications

References 56 publications

Construction of Hierarchical Hollow Co₉S₈/ZnIn₂S₄ Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Construction of Hierarchical Hollow Co₉S₈/ZnIn₂S₄ Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Electrostatic self‐assembly of 2D‐2D CoP/ZnIn₂S₄ nanosheets for efficient photocatalytic hydrogen evolution

Photocatalytic active silver organic framework: Ag(I)‐MOF and its hybrids with silver cyanamide

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Constructing electrostatic self-assembled 2D/2D ultra-thin ZnIn2S4/protonated g-C3N4 heterojunctions for excellent photocatalytic performance under visible light

Cited by 199 publications

References 56 publications

Construction of Hierarchical Hollow Co9S8/ZnIn2S4 Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Construction of Hierarchical Hollow Co9S8/ZnIn2S4 Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Electrostatic self‐assembly of 2D‐2D CoP/ZnIn2S4 nanosheets for efficient photocatalytic hydrogen evolution

Photocatalytic active silver organic framework: Ag(I)‐MOF and its hybrids with silver cyanamide

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Construction of Hierarchical Hollow Co₉S₈/ZnIn₂S₄ Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Construction of Hierarchical Hollow Co₉S₈/ZnIn₂S₄ Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

Electrostatic self‐assembly of 2D‐2D CoP/ZnIn₂S₄ nanosheets for efficient photocatalytic hydrogen evolution