Solvothermal synthesis of the special shape (deformable) hollow g-C3N4 nanospheres

Bai, Xinjiao; Li, Jie; Cao, Chuanbao; Hussain, Sajad

doi:10.1016/j.matlet.2011.01.008

Cited by 67 publications

(42 citation statements)

References 25 publications

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“…Furthermore, there are two brad peaks at approxinmately 1360 cm -1 (D band) and 1580 cm -1 (G band) in the Figure 6 inset. Indicting that there are disordered sp 2 and graphite like sp 2 microdomains in the as-prepared photocatalyst, which confirmed the formation of C-N [38]. as-prepared photocatalysts.…”

Section: Adsorption and Photocatalysis Experimentssupporting

confidence: 59%

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

Wang

et al. 2015

Applied Surface Science

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Section: Adsorption and Photocatalysis Experimentssupporting

confidence: 59%

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

Wang

et al. 2015

Applied Surface Science

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“…It should be noted that we found few mesopores in the carbon nitride shell, presumably because of the collapse of the carbon nitride polymers upon removing the mesoporous silica shell. Indeed, the irreversible deformation/collapse of the central cavity into a bowl-like morphology also occurred when the polymeric shell thickness approached 56 nm, as the capillary stress became too high to preserve the spherical shape of such a soft material 17,39,40 . Hollow structures with a shell thickness of ~ < 30 nm are found to almost completely collapse after template removal ( Supplementary Figs S2e and f).…”

Section: Morphological Investigationsmentioning

confidence: 99%

Bioinspired hollow semiconductor nanospheres as photosynthetic nanoparticles

et al. 2012

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natural photosynthesis occurs in the thylakoid membrane where functional proteins and electron carriers are precisely arranged to efficiently convert sunlight into a chemical potential between the two membrane sides, via charge separation and electron transport chains, for use in oxygen generation and Co 2 fixation. These light-harvesting complexes and cofactors have been actively mimicked using dyes, semiconductors and catalytic nanoparticles. However, the photosynthetic scaffold that optimizes both the capture and distribution of light and separates both the oxidative and reductive species has been mimicked much less often, especially using polymer substances. Here we report the synthesis of hollow nanospheres sized in the optical range and made of a robust semiconductor, melon or carbon-nitride polymer. These hollow nanospheres are shown to function as both light-harvesting antennae and nanostructured scaffolds that improve photoredox catalysis, which was determined to have a 7.5% apparent quantum yield via a hydrogen-generation assay.

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“…C 3 N 4 . [3][4][5][6][7] As shown in Scheme 1a, melamine can be prepared by mildly heating cyanamide (H 2 N-C≡N) or dicyandiamide ((H 2 N) 2 C=N-C≡N). 8,9 However, upon thermal treatment at a temperature higher than 300 o C, melamine starts to predominantly undergo deamination, instead of ring-breaking process.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Thermal and Photochemical Reaction Pathways of Melamine on TiO₂

Lin

Chien

et al. 2015

J. Phys. Chem. C

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Fourier transform infrared spectroscopy was employed to study the thermal and photochemical reactions of melamine ((H 2 N) 3 (C 3 N 3 )) on TiO 2. Also tested was the adsorption of urea, cyanamide (H 2 N-C≡N), dicyandiamide ((H 2 N) 2 C=N-C≡N) and cyanuric acid ((OH) 3 (C 3 N 3 )) for identifying possible reaction intermediates. It was found that the thermal decomposition of melamine starts with N-H bond scission, possibly forming the intermediates such as (H 2 N) 2 (C 3 N 3 )NH-and (H 2 N)(C 3 N 3 ) (NH) 2 -. Further loss of hydrogen atoms and ring-opening from these intermediates lead to the formation of -NCO (isocyanate) and -N 3 (azide) on the surface. The TiO 2 -mediated photochemical reaction of melamine proceeds via different mechanism, forming dicyandiamide. These thermal and photochemical reaction pathways of melamine on TiO 2 are reported for the first time. They are different from previous studies showing the processes of polymerization, and substitution of NH 2 by OH to form cyanuric acid and urea.

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Solvothermal synthesis of the special shape (deformable) hollow g-C3N4 nanospheres

Cited by 67 publications

References 25 publications

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

Bioinspired hollow semiconductor nanospheres as photosynthetic nanoparticles

Comparison of the Thermal and Photochemical Reaction Pathways of Melamine on TiO₂

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Solvothermal synthesis of the special shape (deformable) hollow g-C3N4 nanospheres

Cited by 67 publications

References 25 publications

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

Bioinspired hollow semiconductor nanospheres as photosynthetic nanoparticles

Comparison of the Thermal and Photochemical Reaction Pathways of Melamine on TiO2

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Product

Resources

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Comparison of the Thermal and Photochemical Reaction Pathways of Melamine on TiO₂