Acetylene black quantum dots as a bridge for few-layer g-C3N4/MoS2 nanosheet architecture: 0D–2D heterojunction as an efficient visible-light-driven photocatalyst

Wang, Qian; Chen, Changzhao; Zhu, Shiwang; Ni, Xiaochang; Li, Zhe

doi:10.1007/s11164-019-03876-3

Cited by 22 publications

(6 citation statements)

References 57 publications

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“…The peaks between 1224 and 1631 cm −1 (1224, 1301, 1419, and 1631 cm −1 ) belonged to the C−N stretching of the aromatic rings that originated from the C≡N stretching modes in conjugation. In addition, broad bands observed near 3400 cm −1 for all the IR spectrum of the catalysts correspond to the O−H and N−H stretching frequency [33] . In the case of the E‐g‐CN FTIR spectrum, the peak shifting can easily be identified compared to g‐CN [Figure 8(b)].…”

Section: Resultsmentioning

confidence: 99%

A Magnetically Separable Fe₃O₄@EDTA‐gC₃N₄ Versatile Mesoporous Photocatalyst for CO₂ Reduction and Water Splitting into Solar Fuels**

et al. 2023

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This study discusses CO2 valorization and water splitting via photocatalysis using non‐noble metal magnetically separable Fe‐supported EDTA‐g‐C3N4. A mesoporous and magnetically separable Fe3O4@EDTA‐g‐C3N4 (F‐E‐g‐CN ) hybrid photocatalyst was synthesized for the first time with abundant catalytic sites. Ethylenediaminetetraacetic acid (EDTA) played crucial roles in the heterostructured catalysts, such as linking Fe3O4 and g‐CN together and enhancing charge transfer facilitating a reduced band gap from 2.23 to 0.67 eV in F‐E‐g‐CN (1 : 1). The results indicate a promising yield of methanol (375.56 μmol g−1cat), formic acid (18.70 μmol g−1cat), and hydrogen (59.49 μmol hg−1cat) under the optimized reaction conditions. The catalyst revealed an increase in photoactivity for CO2 conversion and water splitting by factor of 12.38 and 12.05 for methanol and 100‐fold higher for hydrogen production than the pure g‐CN and E‐g‐CN, respectively. An isotopic tracer experiment was carried out using 13CO2, confirming the carbon source of methanol. This research will offer additional in‐depth insights into the design of photocatalytic CO2 reduction and water‐splitting reactions based on g‐CN.

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Section: Resultsmentioning

confidence: 99%

A Magnetically Separable Fe₃O₄@EDTA‐gC₃N₄ Versatile Mesoporous Photocatalyst for CO₂ Reduction and Water Splitting into Solar Fuels**

et al. 2023

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“…To overcome this weak point, efforts have been dedicated to design visible-light active photocatalysts. Graphitic carbon nitride (g-C 3 N 4 )-based materials, as fascinating visible-light-driven photocatalysts, have shown their potential for a variety of applications. , Owing to its two-dimensional (2D) structure, g-C 3 N 4 offers excellent characteristics and is susceptible to be manipulated and modified via different strategies. For further details on 2D photocatalysts, readers can refer to relevant comprehensive resources. − …”

Section: Introductionmentioning

confidence: 99%

Simultaneous Dual-Functional Photocatalysis by g-C₃N₄-Based Nanostructures

et al. 2022

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Heterogeneous photocatalytic reactions have experienced many efforts in developing new materials to tackle environmental and energy crises through utilizing appropriate photocatalysts in wastewater treatment, H2 generation, organic transformations, CO2 reduction, N2 photofixation, and biomass conversion. While these processes are addressed in the literature separately, a recent innovative viewpoint is to employ a photocatalytic system to achieve simultaneously two or more functions. The challenging point is that the combination of two functions in one photocatalytic system requires a novel design and engineering of an appropriate semiconductor photocatalyst with special characteristics for each application in a particular environment. Recently, graphitic carbon nitride (g-C3N4) with its unique physicochemical properties has gained tremendous attention among researchers due to its great potential for utilization as a dual-functional photocatalyst. In this study, the role of morphological engineering and band gap manipulation in heterojunction formation of g-C3N4 will be considered. These newly applied strategies are useful to improve the photocatalytic activity of g-C3N4 in different simultaneous reactions. Furthermore, detailed information on the application of g-C3N4-based materials in dual-functional simultaneous processes will be discussed in different reactions: namely, (i) photocatalytic H2 generation combined with oxidation of organic pollutants, (ii) photocatalytic mineralization of organic pollutants and reduction of the obtained CO2, (iii) photocatalytic removal of a mixture of organic pollutants and heavy metals, (iv) H+ and CO2 reduction, (v) photocatalytic H2 generation in conjunction with oxidation of organic substrates/biomass to value-added products, and (vi) simultaneous H2 and H2O2 production. These combined approaches could provide efficient and sustainable strategies for simultaneous reactions involved in both energy and environmental issues.

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“…11,12 Effective strategies for improving photocatalytic activity include surface modification, defect introduction, element doping, heterogeneous recombination, and cocatalyst modification. [13][14][15][16][17][18][19][20][21] Among them, the construction of the heterojunction is considered to be the most effective means for both broadening light absorption and suppressing carrier recombination. [19][20][21][22][23] As far as candidate composite material is concerned, MoS 2 has great advantages.…”

Section: Introductionmentioning

confidence: 99%

“…[13][14][15][16][17][18][19][20][21] Among them, the construction of the heterojunction is considered to be the most effective means for both broadening light absorption and suppressing carrier recombination. [19][20][21][22][23] As far as candidate composite material is concerned, MoS 2 has great advantages. On the one hand, the band gap of semiconducting phase MoS 2 (2H-MoS 2 ) is only 1.7 eV when compared with g-C 3 N 4 (2.7 eV), indicating the strong absorption of visible light.…”

Section: Introductionmentioning

confidence: 99%

Heterojunctions of N-deficient g-C₃N₄/1T@2H-MoS₂ with interfacial C–S–Mo coordination for enhanced photocatalytic activity

Chen

Wang

2023

New J. Chem.

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Acetylene black quantum dots as a bridge for few-layer g-C3N4/MoS2 nanosheet architecture: 0D–2D heterojunction as an efficient visible-light-driven photocatalyst

Cited by 22 publications

References 57 publications

A Magnetically Separable Fe₃O₄@EDTA‐gC₃N₄ Versatile Mesoporous Photocatalyst for CO₂ Reduction and Water Splitting into Solar Fuels**

A Magnetically Separable Fe₃O₄@EDTA‐gC₃N₄ Versatile Mesoporous Photocatalyst for CO₂ Reduction and Water Splitting into Solar Fuels**

Simultaneous Dual-Functional Photocatalysis by g-C₃N₄-Based Nanostructures

Heterojunctions of N-deficient g-C₃N₄/1T@2H-MoS₂ with interfacial C–S–Mo coordination for enhanced photocatalytic activity

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Acetylene black quantum dots as a bridge for few-layer g-C3N4/MoS2 nanosheet architecture: 0D–2D heterojunction as an efficient visible-light-driven photocatalyst

Cited by 22 publications

References 57 publications

A Magnetically Separable Fe3O4@EDTA‐gC3N4 Versatile Mesoporous Photocatalyst for CO2 Reduction and Water Splitting into Solar Fuels**

A Magnetically Separable Fe3O4@EDTA‐gC3N4 Versatile Mesoporous Photocatalyst for CO2 Reduction and Water Splitting into Solar Fuels**

Simultaneous Dual-Functional Photocatalysis by g-C3N4-Based Nanostructures

Heterojunctions of N-deficient g-C3N4/1T@2H-MoS2 with interfacial C–S–Mo coordination for enhanced photocatalytic activity

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A Magnetically Separable Fe₃O₄@EDTA‐gC₃N₄ Versatile Mesoporous Photocatalyst for CO₂ Reduction and Water Splitting into Solar Fuels**

A Magnetically Separable Fe₃O₄@EDTA‐gC₃N₄ Versatile Mesoporous Photocatalyst for CO₂ Reduction and Water Splitting into Solar Fuels**

Simultaneous Dual-Functional Photocatalysis by g-C₃N₄-Based Nanostructures

Heterojunctions of N-deficient g-C₃N₄/1T@2H-MoS₂ with interfacial C–S–Mo coordination for enhanced photocatalytic activity