Facile preparation of g-C3N4 modified BiOCl hybrid photocatalyst and vital role of frontier orbital energy levels of model compounds in photoactivity enhancement

Shi, Shan; Gondal, M.A.; Al‐Saadi, Abdulaziz A.; Fajgаr, Radek; Kupčı́k, Jaroslav; Chang, Xiaofeng; Shen, Kai; Xu, Qingyu; Seddigi, Zaki S.

doi:10.1016/j.jcis.2013.10.052

Cited by 117 publications

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“…5,12,20,21 Therefore, a few references have been reported to synthesize and evaluate photocatalytic performance of bulk g-C 3 N 4 -BiOCl hybrids. 22,23 However, to the best of our knowledge, there were no reports demonstrating synthesis and application of BiOCl hybridized with exfoliated g-C 3 N 4 nanosheets for pollutants removal under visible light irradiation, even exfoliated g-C 3 N 4 nanosheets showed outstanding catalytic performance in comparison to bulk g-C 3 N 4 . Therefore, in this study, for the rst time, novel and robust BiOCl-CNs hybrids were synthesized through a facile chemical deposition-precipitation method and then exposed to photocatalytic degradation of dye RhB.…”

Section: 7-9mentioning

confidence: 99%

Construction of exfoliated g-C3N4 nanosheets–BiOCl hybrids with enhanced photocatalytic performance

et al. 2014

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Exfoliated g-C 3 N 4 nanosheets (CNs) were composited with bismuth oxychloride (BiOCl) to fabricate a series of hybrids via a facile chemical deposition-precipitation method in this investigation. The as-synthesized BiOCl-CNs hybrids were then fully characterized by a collection of analytical techniques. It was obviously observed that CNs were in intimate contact with hierarchical BiOCl flowerlike units to form heterojunction structures, which facilitates transfer and efficient separation of photoinduced electronhole pairs, thus greatly increasing catalytic activity upon visible light irradiation. Together with other merits such as enlarged specific surface area, favorable optical properties, and suitable energy-band structures, these robust BiOCl-CNs hybrids showed significantly enhanced photocatalytic performance towards Rhodamine B (RhB) dye removal. Under identical conditions, the apparent photocatalytic reaction rate of the best hybrid BiOCl-CNs-3% was about 2.1 and 26.6 times as high as those of BiOCl and CNs alone, respectively. A possible photocatalytic mechanism was also proposed by means of active species trapping measurements, revealing that superoxide radicals (cO 2 À ) played a crucial role during the catalytic process.

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Section: 7-9mentioning

confidence: 99%

Construction of exfoliated g-C3N4 nanosheets–BiOCl hybrids with enhanced photocatalytic performance

et al. 2014

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“…For instance, SiO 2 /g-C 3 N 4 [17], Ag-AgBr/g-C 3 N 4 [18], g-C 3 N 4 /BiOCl [19,20], g-C 3 N 4 /ZnO [21], A g-C 3 N 4 -CdS [22], g-C 3 N 4 -TiO 2 [23][24][25], g-C 3 N 4 /Bi 2 WO 6 [26], g-C 3 N 4 -Co 3 O 4 [27], g-C 3 N 4 -Ag 3 PO 4 [28], N TiO 2 /g C 3 N 4 [29], Al 2 O 3 /g-C 3 N 4 [30], et al All these researches of g-C 3 N 4 sensitive or modified or composited or heterojunction could give the positive results in photocatalysis, it was also identified that the g-C 3 N 4 as the organic photocatalytic material could effectively enhance the photocatalytic activity of photocatalysts. However, among the compounded types, maybe due to the better properties of TiO 2 , the g-C 3 N 4 -TiO 2 was widely investigated.…”

Section: Page 4 Of 24mentioning

confidence: 99%

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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“…However, its inherent constraints, for example inefficiency in utilizing the visible solar spectrum and high rate of electron-hole recombination, restrict the potential of this material. Diverse g-C 3 N 4 -based composite photocatalysts [15][16][17][18][19][20] have been reported to have a better ranges of visible-light absorption and to enable more efficient separation of photogenerated carriers.…”

Section: Introductionmentioning

confidence: 99%

Preparation of g-C3N4/BiOX (X = Cl, Br, I) composites, and their photocatalytic activity under visible light irradiation

et al. 2014

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g-C 3 N 4 /BiOX (X = Cl, Br, I) composite photocatalysts have been prepared by means of a facile immersion-hydrolysis method. The microstructural and morphological characteristics of the as-prepared composite photocatalysts were investigated by means of X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and Fourier-transform infrared spectroscopy. The photodegradation performance of both g-C 3 N 4 /BiOCl and g-C 3 N 4 /BiOBr composites was superior to that of pure g-C 3 N 4 or the corresponding bismuth oxyhalides, possibly because of efficient separation of photogenerated carriers at the interface between g-C 3 N 4 and BiOX (X = Cl, Br). The photostability of as-prepared g-C 3 N 4 /BiOX (X = Cl, Br) composites was also investigated.

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Facile preparation of g-C3N4 modified BiOCl hybrid photocatalyst and vital role of frontier orbital energy levels of model compounds in photoactivity enhancement

Cited by 117 publications

References 31 publications

Construction of exfoliated g-C3N4 nanosheets–BiOCl hybrids with enhanced photocatalytic performance

Construction of exfoliated g-C3N4 nanosheets–BiOCl hybrids with enhanced photocatalytic performance

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

Preparation of g-C3N4/BiOX (X = Cl, Br, I) composites, and their photocatalytic activity under visible light irradiation

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