A new strategy of preparing uniform graphitic carbon nitride films for photoelectrochemical application

Lv, Xiaowei; Cao, Minglei; Shi, Weina; Wang, Mingkui; Shen, Yan

doi:10.1016/j.carbon.2017.02.096

Cited by 69 publications

(42 citation statements)

References 52 publications

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“…The photocurrent density of the framework g-C 3 N 4 film, shown in Figure 5c, reached 89 µA•cm −2 , which is twice the current density of 40 µA•cm −2 in dark conditions. Similarly, Lv et al [23] reported a two-step thermal vapor deposition process of depositing g-C 3 N 4 films. As shown in Figure 5d, the film was firstly deposited onto the inner wall of the crucible through the first TVD method, following this the g-C 3 N 4 attached to the crucible was vaporized through the second process, allowing it to grow on the substrate.…”

Section: Graphitic Carbon Nitridementioning

confidence: 97%

“…Considerable work has been done to optimize its performance, such as doping, forming heterojunctions [58,59], metal nanoparticle decoration, and copolymerization. A g-C 3 N 4 powder can be easily synthesized via inexpensive raw materials, such as urea, melamine, dicyandiamide, under high temperatures, further adding to its advantages as a catalyst in water splitting reactions [23,24]. Through techniques, such as spin coating, drop-casting, and the doctor blade method, g-C 3 N 4 powder can be deposited onto solid substrates in PEC water splitting systems [60].…”

Section: Graphitic Carbon Nitridementioning

confidence: 99%

“…Carbon-based materials have attracted considerable attention for use in a variety of chemical reactions, such as HER, OER, ORR owing to their low cost, high abundancy and highly stable catalytic properties [8,9,17,18]. Additionally, the low-dimensional structure of carbon-based materials, including graphene [19,20], graphene oxide (GO) [12,21], reduced graphene oxide (rGO) [22], graphitic carbon nitride (g-C 3 N 4 ) [23,24], graphene quantum dots (GQDs) [25,26], and graphene quantum sheets (GQSs) [27,28], has prompted intensive interest in photocatalysis, PEC, and EC [29]. Two-dimensional (2D) layered materials, such as graphene and its family, can act as "the building blocks" for the catalysts with their ultrathin plane structure [20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low Dimensional Carbon-Based Catalysts for Efficient Photocatalytic and Photo/Electrochemical Water Splitting Reactions

et al. 2019

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A universal increase in energy consumption and the dependency on fossil fuels have resulted in increasing severity of global warming, thus necessitating the search of new and environment-friendly energy sources. Hydrogen is as one of the energy sources that can resolve the abovementioned problems. Water splitting promotes ecofriendly hydrogen production without the formation of any greenhouse gas. The most common process for hydrogen production is electrolysis, wherein water molecules are separated into hydrogen and oxygen through electrochemical reactions. Solar-energy-induced chemical reactions, including photocatalysis and photoelectrochemistry, have gained considerable attention because of the simplicity of their procedures and use of solar radiation as the energy source. To improve performance of water splitting reactions, the use of catalysts has been widely investigated. For example, the novel-metal catalysts possessing extremely high catalytic properties for various reactions have been considered. However, due to the rarity and high costs of the novel-metal materials, the catalysts were considered unsuitable for universal use. Although other transition-metal-based materials have also been investigated, carbon-based materials, which are obtained from one of the most common elements on Earth, have potential as low-cost, nontoxic, high-performance catalysts for both photo and electrochemical reactions. Because abundancy, simplicity of synthesis routes, and excellent performance are the important factors for catalysts, easy optimization and many variations are possible in carbon-materials, making them more attractive. In particular, low-dimensional carbon materials, such as graphene and graphitic carbon nitride, exhibit excellent performance because of their unique electrical, mechanical, and catalytic properties. In this mini-review, we will discuss the performance of low-dimensional carbon-based materials for water splitting reactions.

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Section: Graphitic Carbon Nitridementioning

confidence: 97%

Section: Graphitic Carbon Nitridementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low Dimensional Carbon-Based Catalysts for Efficient Photocatalytic and Photo/Electrochemical Water Splitting Reactions

et al. 2019

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“…It is obvious that the generated current density shows a rapid decay in the beginning seconds of each on/off cycle, and then reaches a stable current profile. This phenomenon can be explained by the fact that the generated holes are accumulated on the CN film surface, hence these congregated holes recombine with electrons, and consequently resulting in the decay of the photocurrent density . The photocurrent becomes stable once there is balance among the charge generation, separation, transportation and recombination.…”

Section: Figurementioning

confidence: 99%

Surface Engineering of Carbon Nitride Electrode by Molecular Cobalt Species and Their Photoelectrochemical Application

Chen

Wang

et al. 2018

Chemistry An Asian Journal

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Graphitic carbon nitride (CN) has been widely regarded as a promising photocatalyst since the discovery of its capability for photocatalytic hydrogen evolution. Herein, we developed a functional CN film on a conductive fluorine-doped tin oxide (FTO) electrode by using a microprinting-based direct growth method. Furthermore, the photoelectrochemical performance of the derived CN@FTO film was demonstrated to be enhanced by incorporating molecular cobalt species. The reduced charge transport resistance in the cobalt-modified CN@FTO films is suggested to accelerate the charge-carrier transfer rate and thus to improve the performance in photoelectrochemical application. The approach is versatile and can be further optimized by selecting a proper "ink" solution and modifier on various conductive substrates.

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“…By placing the substrates in the vicinity of the precursor source, the film could be obtained on the substrate by in-situ deposition. However, in the previous reports, several grams of melamine (or other precursors) usually has to be adopted for the film formation (Bian et al, 2015a,b;Xu et al, 2015a;Arazoe et al, 2016;Ye and Chen, 2016;Lu et al, 2017;Lv et al, 2017;Peng et al, 2018;Xiao et al, 2018Xiao et al, , 2019Xiong et al, 2018). Most of the precursor can't be converted to the film, although there are indeed plenty of bulky carbon nitride formed in the bottom of the crucible.…”

mentioning

confidence: 99%

In-situ Construction of Superhydrophilic g-C3N4 Film by Vapor-Assisted Confined Deposition for Photocatalysis

Jia

Zhang

et al. 2019

Front. Mater.

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Herein, we report an improved strategy for the synthesis of superhydrophilic g-C 3 N 4 film by vapor-assisted confined deposition method. With minimum amount of precursor, the vapor could be confined in the microenvironment for facilitating the film growth on both sides of the substrates. The obtained films showed similar physiochemical properties with the bulk counterpart and could be peeled off from the substrates by soaking in hot water. The free-standing film is flexible and superhydrophilic, featuring many microfibers atop. The g-C 3 N 4 film from both sides of the substrates could be used in the photocatalytic dye degradation in a repeated manner and showed excellent performance and stability. The current work should shed light on the optimized growth of the g-C 3 N 4 film and could find more application in future device field.

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A new strategy of preparing uniform graphitic carbon nitride films for photoelectrochemical application

Cited by 69 publications

References 52 publications

Low Dimensional Carbon-Based Catalysts for Efficient Photocatalytic and Photo/Electrochemical Water Splitting Reactions

Low Dimensional Carbon-Based Catalysts for Efficient Photocatalytic and Photo/Electrochemical Water Splitting Reactions

Surface Engineering of Carbon Nitride Electrode by Molecular Cobalt Species and Their Photoelectrochemical Application

In-situ Construction of Superhydrophilic g-C3N4 Film by Vapor-Assisted Confined Deposition for Photocatalysis

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