Bamboo-charcoal-loaded graphitic carbon nitride for photocatalytic hydrogen evolution

Lu, Yongfeng; Wang, Wensong; Cheng, Haiying; Qiu, Haijiang; Sun, Wenhao; Xiao, Fang; Zhu, Jiefang; Zheng, Yuanhui

doi:10.1016/j.ijhydene.2021.10.267

Cited by 39 publications

(16 citation statements)

References 37 publications

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“…HCCN with an excellent charge storage ability was prepared by a LiCl/KCl molten salt method in air (see the Experimental Section for details). The previously reported methods for preparing HCCN were carried out in an inert atmosphere (e.g., Ar or N 2 ) or vacuum-sealed quartz ampules. ,,,, In contrast, we prepared HCCN in an ambient atmosphere to reduce the fabrication cost and realize large-scale synthesis. The phases of BCN and HCCN were characterized by XRD.…”

Section: Resultsmentioning

confidence: 99%

“…Carbon nitride (CN) is an organic semiconductor material that is synthesized by thermal polymerization with various raw materials . Since the first report on CN as a visible-light-responsive photocatalyst for hydrogen evolution in the presence of a sacrificial donor by Wang et al in 2009, it has attracted much research interest and has found great potential applications in the fields of photocatalysis, − electrocatalysis, , photoelectrochemical energy conversion and storage, , sensing, , biological imaging, and medical treatment . In particular, the highly crystalline carbon nitride (HCCN) obtained by molten salt treatment (e.g., KSCN or LiCl/KCl) can store light-induced electrons. − Upon light excitation, the electron–hole pairs of HCCN are generated.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Nitride Nanosheet-Based Photochromic Physical Unclonable Functions for Anticounterfeiting Applications

Xiao

Chen

et al. 2022

ACS Appl. Nano Mater.

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Labels based on physical unclonable functions (PUFs) have been proven to be some of the most effective anticounterfeiting strategies. However, it is still challenging to develop PUF-based anticounterfeiting labels with low prices, simple manufacturing, and easy authentication. Herein, photochromic PUF labels are fabricated by randomly dispersing highly crystalline carbon nitride (HCCN) particles in poly(vinyl acetate) (PVAc). The color of the PVAc/HCCN films originating from photochromism is used as the first layer of safety, which is verified by the naked eye. The pattern of the randomly distributed HCCN particles within the photochromic area (i.e., the PUF) is used as the second layer of security. The PUF can be read out by any smartphone equipped with a portable objective and then automatically authenticated by computer vision technology. We further prove the accurate and feasible authentication of the prepared PUFs and their application potentials.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Nitride Nanosheet-Based Photochromic Physical Unclonable Functions for Anticounterfeiting Applications

Xiao

Chen

et al. 2022

ACS Appl. Nano Mater.

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“…There were also well-defined peaks at 1239.2 cm −1 and 805.6 cm −1 . The peak observed at 1239.2 cm −1 represented the presence of tri-s-azine derivatives in the sample [22]. The out-of-plane bending vibration characteristic of heptazine rings was represented by the peak observed at 805.6 cm −1 [12].…”

Section: Sem-edx Analysismentioning

confidence: 96%

Enhanced Sonocatalytic Performance of Non-Metal Graphitic Carbon Nitride (g-C3N4)/Coconut Shell Husk Derived-Carbon Composite

et al. 2022

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This study focused on the modification of graphitic carbon nitride (g-C3N4) using carbon which was obtained from the pyrolysis of coconut shell husk. The sonocatalytic performance of the synthesized samples was then studied through the degradation of malachite green. In this work, pure g-C3N4, pure carbon and carbon/g-C3N4 composites (C/g-C3N4) at different weight percentages were prepared and characterized by using XRD, SEM-EDX, FTIR, TGA and surface analysis. The effect of carbon amount in the C/g-C3N4 composites on the sonocatalytic performance was studied and 10 wt% C/g-C3N4 showed the best catalytic activity. The optimization study was conducted by using response surface methodology (RSM) with a central composite design (CCD) model. Three experimental parameters were selected in RSM including initial dye concentration (20 to 25 ppm), initial catalyst loading (0.3 to 0.5 g/L), and solution pH (4 to 8). The model obtained was found to be significant and reliable with R2 value (0.9862) close to unity. The degradation efficiency of malachite green was optimized at 97.11% under the conditions with initial dye concentration = 20 ppm, initial catalyst loading = 0.5 g/L, solution pH = 8 after 10 min. The reusability study revealed the high stability of 10 wt% C/g-C3N4 as sonocatalyst. In short, 10 wt% C/g-C3N4 has a high potential for industrial application since it is cost effective, reusable, sustainable, and provides good sonocatalytic performance.

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“…[ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ], sulfides (CdS, MoS 2 , ZnS, etc.) [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ], C 3 N 4 [ 28 , 29 , 30 , 31 , 32 , 33 ], etc. However, conventional semiconductor photocatalysts still have a low STH energy conversion efficiency that is far from satisfactory due to their wide bandgaps and high electron-hole recombination rates.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Halide Perovskite Nanocrystals for Photocatalytic Hydrogen Evolution

Zhang

Zhou

et al. 2022

Nanomaterials

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Due to its environmental cleanliness and high energy density, hydrogen has been deemed as a promising alternative to traditional fossil fuels. Photocatalytic water-splitting using semiconductor materials is a good prospect for hydrogen production in terms of renewable solar energy utilization. In recent years, halide perovskite nanocrystals (NCs) are emerging as a new class of fascinating nanomaterial for light harvesting and photocatalytic applications. This is due to their appealing optoelectronic properties, such as optimal band gaps, high absorption coefficient, high carrier mobility, long carrier diffusion length, etc. In this review, recent progress in halide perovskite NCs for photocatalytic hydrogen evolution is summarized. Emphasis is given to the current strategies that enhance the photocatalytic hydrogen production performance of halide perovskite NCs. Some scientific challenges and perspectives for halide perovskite photocatalysts are also proposed and discussed. It is anticipated that this review will provide valuable references for the future development of halide perovskite-based photocatalysts used in highly efficient hydrogen evolution.

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Bamboo-charcoal-loaded graphitic carbon nitride for photocatalytic hydrogen evolution

Cited by 39 publications

References 37 publications

Carbon Nitride Nanosheet-Based Photochromic Physical Unclonable Functions for Anticounterfeiting Applications

Carbon Nitride Nanosheet-Based Photochromic Physical Unclonable Functions for Anticounterfeiting Applications

Enhanced Sonocatalytic Performance of Non-Metal Graphitic Carbon Nitride (g-C3N4)/Coconut Shell Husk Derived-Carbon Composite

Recent Progress in Halide Perovskite Nanocrystals for Photocatalytic Hydrogen Evolution

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