Construction of graphdiyne (CnH2n-2) based Co-S-P/CuI double S-scheme heterojunctions proved with in situ XPS characterization for efficient photocatalytic hydrogen production

Zhang, Yueyang; Liu, Hai; Yang, Mengxue; Li, Songling; Jin, Zhiliang

doi:10.1016/j.apmt.2023.101735

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…In addition, the appearance of Raman signals at 1393 and 1580 cm –1 corresponds to respiration vibration in the sp 2 carbon domain and first-order scattering in the sp 2 carbon domain in the aromatic ring, which belongs to the E 2g mode. , The presence of these signals indicates the presence of aromatic ring structures in the catalyst and the fact that the carbon atoms of these structures have respiratory vibrations. In addition, three bands at 1960, 2051, and 2127 cm –1 can be attributed to the vibrations from –CC–Cu to –CC–CC–. − This suggests that the interaction between Cu and GDY is not just a simple contact but also involves the vibration of the carbon–copper bond. This interaction may help to enhance the stability and activity of the catalyst.…”

Section: Resultsmentioning

confidence: 99%

Phosphating Cu/Graphdiyne Nanospheres for Improved Photocatalytic Hydrogen Production

Wu,

Wang,

Wang

et al. 2024

ACS Appl. Nano Mater.

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The classical synthesis of graphdiyne (GDY) involves the cross-coupling reaction of hexaethynylbenzene on copper foil. However, due to the bulky nature of copper foil, stripping loss occurs. In this study, nanospherical copper powder was employed instead of copper foil for the preparation of Cu/ graphdiyne (Cu/GDY) phosphide, which exhibits superior photocatalytic activity compared to copper as it efficiently absorbs light energy and converts it into chemical energy, thereby promoting hydrogen evolution reaction with photocatalysts. Moreover, cuprous phosphide demonstrates excellent stability during the photocatalytic process and is resistant to photocorrosion or oxidation. By adjusting the phosphating ratio through hightemperature phosphating, Cu/GDY-P containing Cu 3 P was obtained. The maximum hydrogen evolution rate under visible light reached 785.75 μmol g −1 h −1 . Based on X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) results, a plausible photogenerated charge transfer mechanism in Cu/ GDY-P is proposed herein. This work presents a straightforward and feasible strategy for treating Cu/GDY-P materials with significant implications for future researchers involved in preparing copper-based/GDY materials.

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Section: Resultsmentioning

confidence: 99%

Phosphating Cu/Graphdiyne Nanospheres for Improved Photocatalytic Hydrogen Production

Wu,

Wang,

Wang

et al. 2024

ACS Appl. Nano Mater.

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“… To further validate the interaction between Co 2+ and EN, X-ray photoelectron spectroscopy (XPS) was also employed. Figure d illustrates that the Co 2p peak of Co-Y-EN has shifted to a lower binding energy compared to that of Co-Y, indicating the electron donation from the N sites of EN, highly consistent with the FTIR analysis.…”

Section: Resultsmentioning

confidence: 99%

Facilely Grafting Small Amine Molecules into Co-Exchanged Zeolite for Enhancing CO₂ Adsorption

Yang,

Lin,

Zhao

et al. 2024

Ind. Eng. Chem. Res.

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Zeolites are promising materials for CO 2 adsorption, yet they still face the challenges of low adsorption capacity and selectivity. Herein, we report a strategy of grafting ethylenediamine to a Co-exchanged Y zeolite to improve the CO 2 adsorption capacity of Y zeolite via strong interactions between Co 2+ and amine groups. Functionalization of zeolite Y with amines (Co-Y-EN) enables significant improvement in the CO 2 adsorption capacity (4.36 mmol/g at 1 bar and 298 K), which is 1.73 times higher than that of pristine Na-Y zeolite. Moreover, Co-Y-EN demonstrates enhanced CO 2 selectivity, as confirmed by both singlecomponent gas adsorption experiments and breakthrough tests. The superior selectivity is attributed to the strong affinity between the amine sites and CO 2 molecules, as well as the optimized pore sizes for CO 2 adsorption. Overall, this study presents a straightforward approach to enhancing the CO 2 adsorption performance of zeolite materials.

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“…The basic optical properties of H-GDY and GDY were briefly understood through UV-Vis and PL tests. 33,38 Fig. 5(a) illustrates the test results of the UV-Vis diffuse reflectance spectra of CaC 2 , H-GDY F , H-GDY Br , GDY F , and GDY Br .…”

Section: Electrochemistry and Optical Informationmentioning

confidence: 99%

“…34,39 The photocurrent response curves, linear scanning voltammetry (LSV), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) tests were used to further understand the electrochemical properties of H-GDY and GDY. 33 In Fig. S5(a), † compared with H-GDY F , H-GDY Br exhibits the strongest photocurrent response curve.…”

Section: Electrochemistry and Optical Informationmentioning

confidence: 99%

A low-cost and high-yield green preparation method of graphdiyne and hydrogen-substituted graphdiyne and their photocatalytic properties

Jin,

2023

Green Chem.

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Construction of graphdiyne (CnH2n-2) based Co-S-P/CuI double S-scheme heterojunctions proved with in situ XPS characterization for efficient photocatalytic hydrogen production

Cited by 5 publications

References 45 publications

Phosphating Cu/Graphdiyne Nanospheres for Improved Photocatalytic Hydrogen Production

Phosphating Cu/Graphdiyne Nanospheres for Improved Photocatalytic Hydrogen Production

Facilely Grafting Small Amine Molecules into Co-Exchanged Zeolite for Enhancing CO₂ Adsorption

A low-cost and high-yield green preparation method of graphdiyne and hydrogen-substituted graphdiyne and their photocatalytic properties

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Construction of graphdiyne (CnH2n-2) based Co-S-P/CuI double S-scheme heterojunctions proved with in situ XPS characterization for efficient photocatalytic hydrogen production

Cited by 5 publications

References 45 publications

Phosphating Cu/Graphdiyne Nanospheres for Improved Photocatalytic Hydrogen Production

Phosphating Cu/Graphdiyne Nanospheres for Improved Photocatalytic Hydrogen Production

Facilely Grafting Small Amine Molecules into Co-Exchanged Zeolite for Enhancing CO2 Adsorption

A low-cost and high-yield green preparation method of graphdiyne and hydrogen-substituted graphdiyne and their photocatalytic properties

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Facilely Grafting Small Amine Molecules into Co-Exchanged Zeolite for Enhancing CO₂ Adsorption