Synthesis of hollow carbon nitride microspheres by an electrodeposition method

Bai, Xinjiao; Li, Jie; Cao, Chuanbao

doi:10.1016/j.apsusc.2009.10.061

Cited by 39 publications

(14 citation statements)

References 48 publications

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“…The peaks in the range of 3300-3500 cm −1 are assigned to the stretching vibration modes of NH and NH 2 groups and are observed in all the samples. 38,39 The absorption peaks from 800 cm −1 to 1400 cm −1 related to the breathing mode of s-triazine, amorphous sp 3 C-C bonds and C-N are also examined in all the samples; these results are consistent with the XRD and XPS results of msg-C 3 N 4 . 15,30 The peak at 1697 cm −1 is only present in the nanorods because of the existence of CO bonds.…”

Section: Resultssupporting

confidence: 80%

Large scale production of novel g-C3N4 micro strings with high surface area and versatile photodegradation ability

et al. 2014

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An easy, scalable and environmentally benign chemical method has been developed to synthesize micro strings of graphitic-C3N4 (msg-C3N4) through pre-treatment of melamine with HNO 3 in alkaline solvent at low temperature. This methodology results in a unique string type morphology of msg-C3N4 with higher surface area. These msg-C3N4 micro strings were used as a photocatalyst under visible light for photodegradation of rhodamine B, methyl blue and methyl orange. The msg-C3N4 shows enhanced photodegradation efficiency due to its high surface area and favourable bandgap. The first order rate constant for msg-C3N4 was measured which confirms the higher performance of msg-C3N4 in comparison to other reported materials such as g-C3N4, Fe2O3/g-C3N4 and TiO2 nanotubes. Thus, the method developed here is favourable for the synthesis of materials with higher surface area and unique morphology, which are favourable for high photodegradation activity. The Royal Society of Chemistry. Keywordsscale, large, c, inf, 3, production, novel, g, n, 4, ability, micro, strings, photodegradation, versatile, area, surface, high Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsTahir, M., Cao, C., Butt, F. K., Butt, S., Idrees, F., Ali, Z., Aslam, I., Tanveer, M., Mahmood, A. & Mahmood, N. (2014). Large scale production of novel g-C3N4 micro strings with high surface area and versatile photodegradation ability. CrystEngComm, 16 (9), 1825-1830. AuthorsMuhammad Nawaz Tahir An easy, scalable and environmentally benign chemical method has been developed to synthesize micro strings of graphitic-C 3 N 4 (msg-C 3 N 4 ) through pre-treatment of melamine with HNO 3 in alkaline solvent at low temperature. This methodology results in a unique string type morphology of msg-C 3 N 4 with higher surface area. These msg-C 3 N 4 micro strings were used as a photocatalyst under visible light for photodegradation of rhodamine B, methyl blue and methyl orange. The msg-C 3 N 4 shows enhanced photodegradation efficiency due to its high surface area and favourable bandgap. The first order rate constant for msg-C 3 N 4 was measured which confirms the higher performance of msg-C 3 N 4 in comparison to other reported materials such as g-C 3 N 4 , Fe 2 O 3 /g-C 3 N 4 and TiO 2 nanotubes. Thus, the method developed here is favourable for the synthesis of materials with higher surface area and unique morphology, which are favourable for high photodegradation activity.

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Section: Resultssupporting

confidence: 80%

Large scale production of novel g-C3N4 micro strings with high surface area and versatile photodegradation ability

et al. 2014

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“…As compared to the bulk CN, the FTIR spectrum of CNNSs exhibits two new bands at around 2182 and 3420 cm -1 .The strong band at 2182 cm -1 corresponds to the stretch of cyano groups [55], which may stem from the decomposition of the tri-s-triazine units of CNNSs in the NaCl/KCl molten salts and would be discussed below. The broad band at about 3420 cm -1 indicates the existence of some NH and OH groups in the sample [56]. A C=O stretching vibration peak at around 1623 cm -1 [57] Figure S3a are associated with oxygen in the states of C=O and C-OH/C-O-C, respectively [58,60].…”

Section: Fluorescence Quantum Yield Measurementsmentioning

confidence: 98%

Molten salt synthesis of water-dispersible polymeric carbon nitride nanoseaweeds and their application as luminescent probes

Wang

et al. 2016

Carbon

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A molten salt method has been developed for synthesis of polymeric carbon nitride nanoseaweeds (CNNSs) using melamine and NaCl/KCl as precursor and eutectic salts, respectively. The resulting CNNSs present uniform shape which are about 20 nanometers wide and several hundred nanometers long. Moreover, they show excellent water dispersibility and enhanced photoluminescence properties, which make the CNNSs possess the potential as luminescent probes. Employed tetracycline (TC) as target, we have investigated the feasibility of utilizing the CNNSs for TC detection and the results demonstrate high selectivity and sensitivity, with detection limit of 0.04 μM. Interestingly, this work provides a general method to synthesize CNNSs from other precursors, such as guanidine hydrochloride and dicyandiamide.

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“…For example, Bai et al reported hollow g-C3N4 microspheres using silica nanospheres with different diameters as templates. The average diameters of the spheres are about 1 μm, and they are composed of nanoparticles with a size range of 5 to 30 nm [70].…”

Section: Electrochemical Depositionmentioning

confidence: 99%

Graphitic carbon nitride with different dimensionalities for energy and environmental applications

et al. 2019

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As a metal-free semiconductor, graphitic carbon nitride (g-C 3 N 4) has received extensive attention due to its high stability, nontoxicity, facile and low-cost synthesis, appropriate band gap in the visible spectral range and wide availability of resources. The dimensions of g-C 3 N 4 can influence the regime of the confinement of electrons, and consequently, g-C 3 N 4 with various dimensionalities shows different properties, making them available for many stimulating applications. Although there are some reviews focusing on the synthesis strategy and applications of g-C 3 N 4 , there is still a lack of comprehensive review that systemically summarises the synthesis and application of different dimensions of g-C 3 N 4 , which can provide an important theoretical and practical basis for the development of g-C 3 N 4 with different dimensionalities and maximises their potential in diverse applications. By reviewing the latest progress of g-C 3 N 4 studies, we aim to summarise the preparation of g-C 3 N 4 with different dimensionalities using various structural engineering strategies, discuss the fundamental bottlenecks of currently existing methods and their solution strategies, and explore their applications in energy and environmental applications. Furthermore, it also puts forward the views on the future research direction of these unique materials.

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Synthesis of hollow carbon nitride microspheres by an electrodeposition method

Cited by 39 publications

References 48 publications

Large scale production of novel g-C3N4 micro strings with high surface area and versatile photodegradation ability

Large scale production of novel g-C3N4 micro strings with high surface area and versatile photodegradation ability

Molten salt synthesis of water-dispersible polymeric carbon nitride nanoseaweeds and their application as luminescent probes

Graphitic carbon nitride with different dimensionalities for energy and environmental applications

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