Facile synthesis of B/g-C<sub>3</sub>N<sub>4</sub> composite materials for the continuous-flow selective photo-production of acetone

Caudillo-Flores, Uriel; Muñoz‐Batista, Mario J.; Kubacka, Anna; Luque, Rafael; Fernández-García, Marcos

doi:10.1039/d0gc01326a

Cited by 33 publications

(21 citation statements)

References 51 publications

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“…The second most intense signal for the materials obtained from melamine are N 3 C (N 1s) and C-C/C=C (C 1s). Next, in the order are N-Hx and CN-Hx signals [38,39]. In the case of our ureaderived materials, the intensities of the second and third signals are the opposite.…”

Section: Morphology and Structurementioning

confidence: 86%

“…The spectra for both N 1s and C 1s of the samples present the typical shapes as well as the peak positions (~399 and~288 eV for N 1s and C 1s, respectively) [37]. The N 1s spectra present three main contributions related to C-N 3 (N 3 C), N-C=N (N 2 C), and N-H x contributions, while the C 1s region show three contributions assigned to C-C, N-C=N and C-NH x [38]. The sample obtained at the highest temperature is characterized by the highest content of C-C/C=C/N 3 C components and the lowest content of N-H x among all obtained samples.…”

Section: Morphology and Structurementioning

confidence: 94%

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Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis

et al. 2021

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In this contribution, the hydrogen evolution reaction and photodegradation of Rhodamine B (RhB) dye were studied using urea-based polymeric carbon nitride (PCN) as photocatalyst. The effects of calcination temperature and heating rate of the PCN on structural, morphological, optical, photoelectrochemical, and photocatalytic properties were addressed. Different properties were found to be crucial in boosting photocatalytic performance dependending on the reaction type. The highest efficiency in hydrogen evolution was observed in the presence of PCN characterized by the superior charge transport and charge lifetime properties arising from higher degree of structural arrangement and lower defect content in comparison to that of other photocatalysts. However, photocatalytic degradation of RhB was the most powerful when the catalyst exhibited the highest specific surface area as a key parameter determining its efficiency, although it presented lower charge transport and charge carrier properties.

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Section: Morphology and Structurementioning

confidence: 86%

Section: Morphology and Structurementioning

confidence: 94%

Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis

et al. 2021

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“…Figure 6a-d shows a plot of N 2 adsorption-desorption isotherm and pore size distribution of bare TiO 2 and GNT-1 composite. The resulting both the isotherms are of type IV and show an H3 hysteresis loop [48,49]. The mean pore diameter of TiO 2 and GNT-1 is 16.47 and 22.04 nm, respectively, which according to IUPAC regulations confirms the formation of mesoporous structure [50,51].…”

Section: Bet: Surface Area Of Photocatalystmentioning

confidence: 96%

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

Kuldeep

Dhabbe²,

Garadkar

2021

Res Chem Intermed

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In this paper, we report the synthesis of g-C 3 N 4 -TiO 2 hybrid photocatalyst by using the simple, cost-effective and eco-friendly process. The development of TiO 2 nanoflakes on the surface of g-C 3 N 4 nanosheet was carried out by the in situ sol-gel method. The XRD patterns reveal the anatase phase of TiO 2 in the g-C 3 N 4 -TiO 2 nanocomposite. HR-TEM images confirm the size of the nanoflakes in the range of 15-25 nm. The O-Ti and Ti-O-Ti bridge produces the absorption band from 560 to 710 cm −1 for TiO 2 ; it is due to stretching vibrations and the specific band at 805 cm −1 marks the sym-triazine ring of g-C 3 N 4 . UV-Vis spectra show a redshift from 394 to 471 nm in the nanocomposite concerning a decrease in band gap. From BET, it is seen that the surface area of bare TiO 2 and g-C 3 N 4 -TiO 2 are 66 and 146 m 2 g −1 , respectively. The nanoflakes morphology of g-C 3 N 4 -TiO 2 was confirmed from FE-SEM images. The EDS spectrum confirms C, N, Ti, and O elements which prove the purity of the nanocomposite. The g-C 3 N 4 -TiO 2 (1:4) acquired a noticeable enhancement of photocatalytic activity which is double for methyl orange degradation than TiO 2 .

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“…The usage of metal‐free carbon nitride‐based nanocomposites instead of aforementioned metal‐based one was examined as an emerging candidate for important organic processes. [ 29 ] Incorporating monolayer graphene sheet (GS) into carbon nitride (CN) host with intensive distribution was successfully realized after in situ condensation of cyanamide in presence of well‐dispersed reduced graphene oxide (Figure 9A‐C). [ 23c ] The highly integrated nanocombination in which two counterparts of guest‐host components feature evident charge‐transfer interaction is used to modify valence and conductor band position for CN semiconductor‐host.…”

Section: Polymeric Carbon Nitride Based Nanocomposites For Organic Synthesismentioning

confidence: 99%

Semiconductor‐based nanocomposites for selective organic synthesis

Chen

et al. 2021

Nano Select

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Organic synthesis, as a kind of important chemical process closely related to the industry production, environment and energy of human society, is in urgent need of safe, clean, and environmentally benign reagents and routes to realize sustainable chemistry. In last decade, heterogeneous semiconductor nanomaterials catalyzed organic system has long been a promising technology for advanced chemicals manufacturing due to their advantages of durability, low-pollution, and high-scalability. To overcome the limitation posed by unsatisfied reactivity, compositing active components with semiconductor-host that can endow highly interacted nanohybrids with enhancement of surface chemical properties has proved to be an indispensable technique for achieving high-efficiency performance. This review summarizes recent progress on typical semiconductor-based composites including traditional metal oxide, polymeric carbon nitride, N-doped carbon and metal-organic framework (MOFs) applied in organic synthesis. We focus on the compositing promotion mechanism based on semiconductorhost composites and structure-performance relationship in catalytic process. This review is anticipated to provide sparking inspiration for designing nextgeneration heterogeneous nanocatalyts towards practical application.

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Facile synthesis of B/g-C₃N₄ composite materials for the continuous-flow selective photo-production of acetone

Abstract:
Metal boron–g-C₃N₄ composite samples synthesized by mechanochemisty with remarkable selectivity to acetone during the photo-oxidation of 2-propanol.

Cited by 33 publications

References 51 publications

Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis

Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

Semiconductor‐based nanocomposites for selective organic synthesis

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Facile synthesis of B/g-C3N4 composite materials for the continuous-flow selective photo-production of acetone

Abstract: Metal boron–g-C3N4 composite samples synthesized by mechanochemisty with remarkable selectivity to acetone during the photo-oxidation of 2-propanol.

Cited by 33 publications

References 51 publications

Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis

Bifunctional Polymeric Carbon Nitride via Tuning Fabrication Conditions for Photocatalysis

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

Semiconductor‐based nanocomposites for selective organic synthesis

Contact Info

Product

Resources

About

Facile synthesis of B/g-C₃N₄ composite materials for the continuous-flow selective photo-production of acetone

Abstract:
Metal boron–g-C₃N₄ composite samples synthesized by mechanochemisty with remarkable selectivity to acetone during the photo-oxidation of 2-propanol.