Highly active Bi/BiOI composite synthesized by one-step reaction and its capacity to degrade bisphenol A under simulated solar light irradiation

Chang, Chun; Zhu, Lingyan; Fu, Yu; Chu, Xiaolong

doi:10.1016/j.cej.2013.08.048

Cited by 230 publications

(78 citation statements)

References 64 publications

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“…Moreover, the hybrid material also offers an efficient electron-hole transfer which benefits the separation of photoinduced charge carriers, hence enhancing the photocatalytic activity of the system [9]. Recently, BiOI has attracted a considerable attention due to its narrow band gap of 1.7-1.9 eV [10] which can largely harvest the visible light. Therefore, incorporating TiO2 with BiOI may provide the material with better photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Phenol over Highly Visible-Light Active BiOI/TiO2 Nanocomposite Photocatalyst

Boonprakob¹,

Chomkitichai²,

Ketwaraporn³

et al. 2017

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Abstract. BiOI/TiO2 nanocomposites were successfully prepared by the two-step method, co-precipitation/solvothermal method. The amount of BiOI in the composites were varied as 0, 5.0, 7.5, 10.0 and 12.5 mol%. XRD results exhibited sharp and narrow diffraction peaks of both BiOI and TiO2 in all composite samples. Morphologies of as-prepared samples consisted of spherical shapes of TiO2 and nanosheets of BiOI. Diffuse Reflectance UV-visible (DR-UV-vis) spectra of composites drastically shifted into the visible range and the reduced band gap energies were observed. The composites obviously showed an enhanced phenol degradation of ca. 6 times higher than that of pure BiOI, pure TiO2 and Degussa P25. The maximum photocatalytic activity of ca. 68% was found for 10.0 mol% BiOI/TiO2 nanocomposite because of its increased visible light harvesting ability and its efficient electron-hole separation efficiency as observed from DR-UV-vis and photoluminescence spectra results.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Phenol over Highly Visible-Light Active BiOI/TiO2 Nanocomposite Photocatalyst

Boonprakob¹,

Chomkitichai²,

Ketwaraporn³

et al. 2017

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“…5b). A characteristic band group in FT-IR at 504 cm −1 (i.e., symmetrical A 2u -type vibrations of the Bi-O bond) Chang et al (2013) is observed for the fresh and tested photocatalysts. Meanwhile, the represented peaks located at 1380 and 843 cm −1 can be attributed to the reaction intermediates, and the reaction products during the photocatalytic oxidation of NO (e.g., NO − 2 and NO − 3 ) can be observed.…”

Section: Mechanism On Photocatalytic Activity Enhancement and No Degrmentioning

confidence: 97%

Three-Dimensional Bi $$_{5}$$ 5 O $$_{7}$$ 7 I Photocatalysts for Efficient Removal of NO in Air Under Visible Light

et al. 2017

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In this study, we report a flower-like Bi 5 O 7 I photocatalyst with a 41% gaseous nitride oxide (NO) removal efficiency under visible light through the in situ thermal treatment of the hierarchical architecture BiOI synthesized using a facile hydrothermal process. The UV-Vis diffuse reflectance spectroscopy and photocurrent experiments showed that the absorption band edge and photo-induced electron-hole pairs separation efficiency of Bi 5 O 7 I were negative than that of BiOI, whereas the as-prepared Bi 5 O 7 I exhibited excellent and stable visible light photocatalytic performance for NO removal as compared with original BiOI and P25. The results of electron spin resonance spectroscopy and density functional theory calculations suggested that the prominent visible light photocatalytic activity of obtained Bi 5 O 7 I has been attributed to the proper electron band structure which oxidizes the O 2 molecule to ·OH radicals with two electrons in the conduction band. Electronic supplementary materialThe online version of this article

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“…This allows Bi nanoparticles showing promising applications in many fileds, e.g., sensors, fluorescence, surface-enhanced spectroscopy and photocatalysis [23]. Particularly, Bi modified Bi-based semiconductor photocatalysts has attracted intense research interest, such as Bi/Bi 2 O 3 [24], Bi/BiOCl [25,26], Bi/(BiO) 2 CO 3 [27] and Bi/BiOI [28]. These nanocomposite photocatalysts exhibit enhanced photocatalytic activity.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 98%

Facile synthesis of Bi nanoparticle modified TiO 2 with enhanced visible light photocatalytic activity

Chen

et al. 2015

Journal of Alloys and Compounds

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Highly active Bi/BiOI composite synthesized by one-step reaction and its capacity to degrade bisphenol A under simulated solar light irradiation

Cited by 230 publications

References 64 publications

Photocatalytic Degradation of Phenol over Highly Visible-Light Active BiOI/TiO2 Nanocomposite Photocatalyst

Photocatalytic Degradation of Phenol over Highly Visible-Light Active BiOI/TiO2 Nanocomposite Photocatalyst

Three-Dimensional Bi $$_{5}$$ 5 O $$_{7}$$ 7 I Photocatalysts for Efficient Removal of NO in Air Under Visible Light

Facile synthesis of Bi nanoparticle modified TiO 2 with enhanced visible light photocatalytic activity

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