Facilitating efficient photocatalytic hydrogen evolution via enhanced carrier migration at MOF-on-MOF S-scheme heterojunction interfaces through a graphdiyne (C H2–2) electron transport layer

Jin, Fei; Yang, Bolin; Wang, Xuanpu; Li, Teng; Tsubaki, Noritatsu; Jin, Zhiliang

doi:10.1016/j.cjsc.2023.100198

Cited by 53 publications

(6 citation statements)

References 46 publications

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“…The CO 2 emission of the materials and reagents used here were mainly obtained from ecoinvent v3.5 database and industry/literature data. [ 29 ] When generating 1 W s of electrical energy, the CO 2 emission of CWEG is ≈−10.4 g ( Figure 5 a ), which means CWEG can realize “negative carbon electricity generation”. Besides cyanobacteria, other microalgae including diatoms and chlorella (Figure S13 , Supporting Information) were used to fabricate CWEGs, which also show satisfactory electrical performance (Figure S14 , Supporting Information), verifying the universality of microalgae as the CWEGs.…”

Section: Resultsmentioning

confidence: 99%

Microalgae Film‐Derived Water Evaporation‐Induced Electricity Generator with Negative Carbon Emission

Xu,

Zhao,

Jiao

et al. 2024

Advanced Science

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Water evaporation–induced electricity generators (WEGs) are regarded as one of the most promising solutions for addressing the increasingly severe environmental pollution and energy crisis. Owing to the potential carbon emission in the preparation process of WEGs, whether WEG represents a clean electricity generation technology is open to question. Here, a brand‐new strategy is proposed for manufacturing negative carbon emission WEG (CWEG). In this strategy, the microalgae film is used as the electricity generation interface of WEG, which achieves a stable open‐circuit voltage (Voc) of 0.25 V and a short‐circuit current (Isc) of 3.3 µA. Since microalgae can capture carbon dioxide during its growing process, CWEG holds great promise to generate electricity without carbon emissions in the full life cycle compared with other WEGs. To the best of the author's knowledge, this is the first work using microalgae films to fabricate WEG. Therefore, it is believed that this work not only provides a new direction for designing high‐efficiency and eco‐friendly WEG but also offers an innovative approach to the resource utilization of microalgae.

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Section: Resultsmentioning

confidence: 99%

Microalgae Film‐Derived Water Evaporation‐Induced Electricity Generator with Negative Carbon Emission

Xu,

Zhao,

Jiao

et al. 2024

Advanced Science

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“…This is consistent with what has been reported in the literature. [24,25] It can be illustrated that GDY has been successfully prepared. Figure 2c shows the XRD test results of Mo-MOFs.…”

Section: Structural and Morphological Analysismentioning

confidence: 99%

Visible‐Light‐Induced Photocatalytic Hydrogen Evolution Performance of Graphdiyne‐Alkyne Phosphating Mo–Metal‐Organic Frameworks Heterojunction

Ding,

Li,

Wang

et al. 2024

Solar RRL

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In order to explore the application of graphdiyne in photocatalytic splitting of water and hydrogen evolution. In this paper, graphdiyne was prepared by ball milling using calcium carbide as raw material, and it was compounded with phosphating Mo‐MOFs, to explore the photocatalytic hydrogen evolution performance and hydrogen evolution mechanism of composite catalysts. The results showed that the PMF/G‐25 composite photocatalyst had the best hydrogen evolution activity, and the hydrogen production rate was highest at pH = 9, reaching 1668.5 µmol·g‐1·h‐1. Through the four‐cycle hydrogen evolution cycle stability test, the PMF/G‐25 composites still had good hydrogen evolution stability. The results showed that the combination of phosphating Mo‐MOFs and graphdiyne could enhance the hydrogen evolution activity and had excellent hydrogen evolution performance. The photoelectrochemical and fluorescence test results showed that the addition of graphdiyne could effectively improve the charge separation efficiency of the composite catalyst PMF/G‐25. The Mott‐Schottky test found that PMF and GDY were n‐type semiconductors, and their band structures were analyzed. The conduction and valence values were ‐0.56 eV and 1.10 eV for GDY, and ‐0.68 eV and 0.97 eV for PMF, respectively. The mechanism of photocatalytic hydrogen evolution was analyzed, and it was speculated that S‐Scheme heterojunction was formed between PMF and GDY to further promote photocatalytic hydrogen evolution.This article is protected by copyright. All rights reserved.

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“…Therefore, there is an urgent need to explore new materials that combine multiple catalysts to enhance the performance of singlecomponent MOFs. [12][13][14][15] The discovery of graphdiyne (GDY) marked a significant breakthrough in the field of carbon materials. Through the introduction of triple bonds amidst benzene rings, GDY incorporates both sp and sp 2 hybridized carbon, leading to diversity in its chemical structure.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Photocatalytic Hydrogen Evolution Performance Study of NENU‐5/CuBr/Graphdiyne Tandem S‐Scheme Heterojunction

Kong,

Wang,

Jin

2024

Solar RRL

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Graphdiyne (GDY) has been widely applied in the field of photocatalytic hydrogen production due to its unique chemical structure and excellent photoelectric performance. In this study, CuBr was used as a catalytic substrate to prepare CuBr/GDY through a cross‐coupling reaction, and a novel NENU‐5/CuBr/GDY tandem S‐scheme heterojunction photocatalyst was constructed at low temperature. The NENU‐5/CuBr/GDY heterojunction exhibited significantly enhanced activity in photocatalytic hydrogen evolution, with hydrogen evolution reaching 226.62 μmol in 5 h, which was 4.7 and 12.6 times greater than that of pure GDY and NENU‐5, respectively. Comprehensive evaluation of electrochemical, photoluminescence, and time‐resolved photoluminescence indicated that the enhanced activity of the NENU‐5/CuBr/GDY composite catalyst was attributed to high photocurrent response and low electrical resistance, which increased the efficiency of photogenerated charge separation. Additionally, density functional theory (DFT) calculations and work function proposed the possibility of constructing the NENU‐5/CuBr/GDY tandem S‐scheme heterojunction structure. In summary, this work provides valuable ideas into tandem heterojunctions for photocatalytic hydrogen production.This article is protected by copyright. All rights reserved.

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Facilitating efficient photocatalytic hydrogen evolution via enhanced carrier migration at MOF-on-MOF S-scheme heterojunction interfaces through a graphdiyne (C H2–2) electron transport layer

Cited by 53 publications

References 46 publications

Microalgae Film‐Derived Water Evaporation‐Induced Electricity Generator with Negative Carbon Emission

Microalgae Film‐Derived Water Evaporation‐Induced Electricity Generator with Negative Carbon Emission

Visible‐Light‐Induced Photocatalytic Hydrogen Evolution Performance of Graphdiyne‐Alkyne Phosphating Mo–Metal‐Organic Frameworks Heterojunction

Preparation and Photocatalytic Hydrogen Evolution Performance Study of NENU‐5/CuBr/Graphdiyne Tandem S‐Scheme Heterojunction

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