Synthesis of g-C3N4/BiOClxBr1−x hybrid photocatalysts and the photoactivity enhancement driven by visible light

Shi, Shan; Gondal, M.A.; Rashid, S. G.; Qi, Qi; Al‐Saadi, Abdulaziz A.; Yamani, Zain H.; Sui, Yihe; Xu, Qingyu; Shen, Kai

doi:10.1016/j.colsurfa.2014.07.024

Cited by 50 publications

(8 citation statements)

References 37 publications

(40 reference statements)

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“…A heterogeneous junction between g-C3N4 and BiOClBr was synthesized and investigated for its degradation potential for the photooxidation of Rhodamine B [63]. Results showed that 95% of the dye was degraded in 1 h under visible light.…”

Section: Heterogeneous Pairingmentioning

confidence: 99%

Photocatalysts for degradation of dyes in industrial effluents: Opportunities and challenges

et al. 2019

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Discharging dye contaminants into water is a major concern around the world. Among a variety of methods to treat dye-contaminated water, photocatalytic degradation has gained attention as a tool for treating the colored water. Herein, we review the recent advancements in photocatalysis for dye degradation in industrial effluents by categorizing photocatalyst materials into three generations. First generation photocatalysts are composed of single-component materials (e.g., TiO 2 , ZnO, and CdS), while second generation photocatalysts are composed of multiple components in a suspension (e.g., WO 3 /NiWO 4 , BiOI/ZnTiO 3 , and C 3 N 4 /Ag 3 VO 4 ). Photocatalysts immobilized on solid substrates are regarded as third generation materials (e.g., FTO/WO 3 -ZnO, Steel/TiO 2 -WO 3 , and Glass/P-TiO 2 ). Photocatalytic degradation mechanisms, factors affecting the dye degradation, and the lesser-debated uncertainties related to the photocatalysis are also discussed to offer better insights into environmental applications. Furthermore, quantum yields of different photocatalysts are calculated, and a performance evaluation method is proposed to compare photocatalyst systems for dye degradation. Finally, we discuss the present limitations of photocatalytic dye degradation for field applications and the future of the technology.

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Section: Heterogeneous Pairingmentioning

confidence: 99%

Photocatalysts for degradation of dyes in industrial effluents: Opportunities and challenges

et al. 2019

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“…At the same time, their composite semiconductor materials are synthesized. And a good case is that g-C 3 N 4 /BiOCl x Br 1−x [27], WO 3 /BiOCl x Br 1−x [28] and BiPO 4 /BiOCl x Br 1−x [29] photocatalysts also have the higher photocatalytic degradation property.…”

Section: Introductionmentioning

confidence: 99%

Ultransonic-assisted alcoholysis preparation of BiOClxBr1−x modified BiOF microstructure with enhanced photocatalytic performance

Han

Qiang

et al. 2019

J Mater Sci: Mater Electron

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A series of BiOF/BiOCl x Br 1−x composites with different BiOF contents have been synthesized by means of ultrasonicassisted alcoholysis for the first time. The as-prepared samples were characterized by such methods as XRD, SEM, TEM, EDS, Mapping, BET, UV-Vis, XPS and PL spectra. The photocatalytic activity of samples under visible-light irradiation was evaluated by the degradation of Rhodamine. The results revealed that BiOF/BiOCl 0.75 Br 0.25 composite exhibited much higher photocatalytic activity than pure BiOF and BiOCl 0.75 Br 0.25 . And the 30%BiOF/BiOCl 0.75 Br 0.25 composite displayed the highest photocatalytic performance, reaching up 97% after irradiating with visible light for 45 min. The improvement of photocatalytic activity could be ascribed to the increased visible light absorption, its larger specific surface area and the enhanced electron-hole pairs effective separation. Moreover, the•O 2 − and h + were considered as the main active species during photocatalytic process. At last, the possible mechanism of the photocatalytic property was proposed in this paper.

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“…S3 (ESI). It is widely accepted that the stronger PL intensity, the higher recombination rate of electron and hole of the photocatalytic semiconductors [30][31][32]. From the PL results, we can see that the PL intensity of phase-pure Bi7F11O5 is stronger than that of pure BiOCl, indicating that the recombination rate of electron and hole of Bi7F11O5 is faster than BiOCl.…”

Section: Crystal Phase and Morphology Anaysismentioning

confidence: 83%

Synthesis of Bi7F11O5/BiOCl nanosheets by a simple post-synthesis method and the improved charge separation by the heterojunction

Kan

Yang

Teng

et al. 2016

Catalysis Communications

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The Bi7F11O5/BiOCl heterojunction is prepared by a simple hydrothermal method using BiOCl and NH4F as the precursors. It is found that under ultraviolet light irradiation (λ ≤ 420 nm), the activity of Bi7F11O5/BiOCl is 3.3 and 6.4 times higher than that of BiOCl and Bi7F11O5 for the degradation of methyl orange (MO), respectively. The high activity is mainly attributed to the greatly improved the separation and transfer efficiency of charges. This simple post-synthesis method is useful to develop efficient photocatalysts.

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Synthesis of g-C3N4/BiOClxBr1−x hybrid photocatalysts and the photoactivity enhancement driven by visible light

Cited by 50 publications

References 37 publications

Photocatalysts for degradation of dyes in industrial effluents: Opportunities and challenges

Photocatalysts for degradation of dyes in industrial effluents: Opportunities and challenges

Ultransonic-assisted alcoholysis preparation of BiOClxBr1−x modified BiOF microstructure with enhanced photocatalytic performance

Synthesis of Bi7F11O5/BiOCl nanosheets by a simple post-synthesis method and the improved charge separation by the heterojunction

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