Superhydrophilic Graphdiyne Accelerates Interfacial Mass/Electron Transportation to Boost Electrocatalytic and Photoelectrocatalytic Water Oxidation Activity

Li, Jian; Gao, Xin; Li, Zhenzhu; Wang, Jing‐Hao; Zhu, Lei; Yin, Chuancun; Wang, Yang; Li, Xu‐Bing; Liu, Zhongfan; Zhang, Jin; Tung, Chen‐Ho; Wu, Li‐Zhu

doi:10.1002/adfm.201808079

Cited by 100 publications

(65 citation statements)

References 54 publications

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“…In this process, the hexa(ethynyl)benzene monomer was linked by a coupling action. The XPS spectrum of the C1s in the GD (Figure a) shows four peaks about at 284.5, 285.2, 286.8 and 288.5 eV, which are assigned to the C−C (sp 2 ), C−C (sp), C−O and C=O, respectively . However, the C1s in the GD‐CuI (Figure b) exhibits a left‐shift binding energy comparing to one in the GD, which implies that electrons may migrate from GD to CuI.…”

Section: Resultsmentioning

confidence: 99%

“…The XPS spectrum of the C1s in the GD (Figure 1a) shows four peaks about at 284.5, 285.2, 286.8 and 288.5 eV, which are assigned to the CÀ C (sp 2 ), CÀ C (sp), CÀ O and C=O, respectively. [24,25] However, the C1s in the GD-CuI ( Figure 1b) exhibits a left-shift binding energy comparing to one in the GD, which implies that electrons may migrate from GD to CuI. The XPS spectrum of the Cu 2p in the CuI (Figure 1c) exhibits two peaks at 932.0 and 951.8 eV, which were attributed to Cu 2p 3/2 and Cu 2p 1/2 .…”

Section: Chemical Structure Analysismentioning

confidence: 98%

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Distinctive Improved Synthesis and Application Extensions Graphdiyne for Efficient Photocatalytic Hydrogen Evolution

Yang

Wang

et al. 2020

ChemCatChem

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Graphdiyne (GD), a novel two‐dimension carbon hybrid material, due to its unique and excellent properties, has been widely concerned since this innovative material was successfully synthesized by Prof. Yuliang Li in 2010. Traditionally, its synthesis method is growing graphdiyne on copper foils or foam copper as a base catalytic material to deliver copper ions (Cu2+) under pyridine conditions. Here, an innovative progress for graphdiyne preparation approach of using Cu+ ion as a catalytic material is reported and its application in extending to the photocatalytic water‐splitting to produce hydrogen in situ as well. In detail, by means of cuprous iodide used as a catalyst‐carrier to grow a graphdiyne in a pyridine solution of monomeric hexynylbenzene and such CuI‐graphdiyne composite catalyst is directly applied to photocatalytic hydrogen production in situ. Meanwhile, the hydrogen production of GD and CuI are 29.42 μmol/5 h and 156.49 μmol/5 h, respectively. In particular, the composite catalyst GD‐CuI exhibits an optimum photo‐catalytic hydrogen production activity (465.95 μmol/5 h) which is 15.8 times and 3.0 times that of pure GD and CuI respectively. This rational design, one‐step construction of GD‐CuI, successfully enhances photo‐catalytic hydrogen evolution activity. The deeper characterization study results such as TEM, SEM, XPS, XRD, UV‐vis DRS, Transient photocurrent and FT‐IR etc. have been well researched and the results of which are in good agreement with each other.

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Section: Resultsmentioning

confidence: 99%

Section: Chemical Structure Analysismentioning

confidence: 98%

Distinctive Improved Synthesis and Application Extensions Graphdiyne for Efficient Photocatalytic Hydrogen Evolution

Yang

Wang

et al. 2020

ChemCatChem

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“…powder, [69] and Ni catalysts, [70] the use of graphdiyne (GDY) is a very attractive one. [71] GDY has sparked a huge wave of research in water splitting recently. [72] However, it was not until 2019 that researchers began to study the wettability of GDY to enhance electrocatalytic performance.…”

Section: Oxygen Evolution Reactionsmentioning

confidence: 99%

Gas–Liquid–Solid Triphase Interfacial Chemical Reactions Associated with Gas Wettability

Song

et al. 2021

Adv Materials Inter

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there have been many important advances in the study of superwettable surfaces, such as superhydrophilic surfaces (water contact angle (WCA) close to 0°) and superhydrophobic surfaces (WCA > 150°). [3] By studying the relationship between the structure and the property of superwetting surfaces in nature, more and more ideas are provided for the research of bioinspired materials. [4] In 2009, researches on wetting were expanded to oil-water-solid phases, sparking a new wave of research in this field. [5] Through the continuous exploring of wetting, researchers summarized the system of superwettability comprehensively and classified the wetting phenomena in detail in 2014. [4a] Among numerous wetting phenomena, there is one that related to gas, called gas wettability. Like a solid substrate wetted by a liquid, researchers find that a thin film of gas will appear on the surface of a hydrophobic/superhydrophobic solid when it is immersed in water, indicating that the substrate is wetted by bubbles underwater. [6] Therefore, the concept of gas wettability has been recognized, including aerophilic, superaerophilic, aerophobic, and superaerophobic. [7] The contact state between solid and liquid, namely, liquidsolid diphase or gas-liquid-solid triphase contact state, is of great significance to the behavior of bubbles on the solid substrate under liquid, which plays an important role in scientific research and industrial applications. [8] By studying the relationship between the macroscopic behavior and the microstructure of some plants and animals in nature, researchers have extensively explained the wettability of bubbles, better understood the behavior of bubbles, and thus facilitated the design of various materials. [9] Tuning gas wettability to an appropriate level by regulating the composition and morphology of the material surface can facilitate the formation of superwetting interface (gas-liquid-solid triphase interface) with unique gas transport properties. This has provided the possibility to improve the efficiency of chemical reactions, especially for those with gaseous reactants or products. [10] Herein, we focus on the creation of suitable gas wettability (aerophilic, superaerophilic, aerophobic, and superaerophobic) to introduce gas-liquid-solid triphase interfaces for enhanced reaction performance in chemical reactions involving gases over the past decade, including gas-consuming reactions and gas-forming reactions, which are Wettability is widely studied in biological systems and attracts tremendous attention in numerous fields. Gas wettability has been increasingly investigated for the past few years because of the presence of gases in many reactions that are essential to environmental protection, health monitoring, energy conversion, and industrial catalysis. In general, traditional liquid-solid diphase systems with poor solubility and tardy diffusion of gases severely hinder the reaction efficiency. Researches show that this problem can be effectively solved by creating a gas-liquid-solid triphase reac...

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“…Hybrid photocatalysts consisting of at least two materials are considered as a promising system to increase the quantum efficiency of photocatalytic or photoelectrochemical reactions [21][22][23][24]. The strategy aims to reach either spatially separated charge carriers, extending the light absorption spectrum or accelerating the catalytic reaction kinetics.…”

Section: Heterojunctions For Enhanced Charge Carriers Separation and mentioning

confidence: 99%

Metal Chalcogenides Based Heterojunctions and Novel Nanostructures for Photocatalytic Hydrogen Evolution

Jiménez‐Calvo

Paineau

et al. 2020

Catalysts

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The photo-conversion efficiency is a key issue in the development of new photocatalysts for solar light driven water splitting applications. In recent years, different engineering strategies have been proposed to improve the photogeneration and the lifetime of charge carriers in nanostructured photocatalysts. In particular, the rational design of heterojunctions composites to obtain peculiar physico-chemical properties has achieved more efficient charge carriers formation and separation in comparison to their individual component materials. In this review, the recent progress of sulfide-based heterojunctions and novel nanostructures such as core-shell structure, periodical structure, and hollow cylinders is summarized. Some new perspectives of opportunities and challenges in fabricating high-performance photocatalysts are also discussed.

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Superhydrophilic Graphdiyne Accelerates Interfacial Mass/Electron Transportation to Boost Electrocatalytic and Photoelectrocatalytic Water Oxidation Activity

Cited by 100 publications

References 54 publications

Distinctive Improved Synthesis and Application Extensions Graphdiyne for Efficient Photocatalytic Hydrogen Evolution

Distinctive Improved Synthesis and Application Extensions Graphdiyne for Efficient Photocatalytic Hydrogen Evolution

Gas–Liquid–Solid Triphase Interfacial Chemical Reactions Associated with Gas Wettability

Metal Chalcogenides Based Heterojunctions and Novel Nanostructures for Photocatalytic Hydrogen Evolution

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