Photooxidation of Polycyclic Aromatic Hydrocarbons over NaBiO3 under Visible Light Irradiation

Kou, Jiahui; Zhang, Haitao; Li, Zhaosheng; Ouyang, Shuxin; Ye, Jinhua; Zou, Zhigang

doi:10.1007/s10562-007-9358-4

Cited by 30 publications

(11 citation statements)

References 24 publications

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“…According to Ref. [27], both the values of n for NaBiO 3 and BiOCl were determined to be 2, and the results were in agreement with the previous studies [13,23]. A classical Tauc approach is employed to evaluate the band gap of the samples (inset of Fig.…”

Section: Uv-vis Transmittance Spectra Analysissupporting

confidence: 83%

Photocatalytic decomposition of 4-t-octylphenol over NaBiO3 driven by visible light: Catalytic kinetics and corrosion products characterization

Chang

Huang

Cheng

et al. 2010

Journal of Hazardous Materials

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The photocatalytic decomposition of 4-t-octylphenol (4-t-OP) by NaBiO(3) photocatalyst and the catalyst stability in aqueous solution were investigated systematically for the first time. The results showed that some parameters such as catalyst dosage, initial 4-t-OP concentration and pH value of the solution had great effects on the photocatalytic activity. The NaBiO(3) photocatalyst maintained considerable catalytic performance under visible light (lambda>400 nm) irradiation and exhibited a higher photocatalytic activity compared to the commercialized photocatalyst P25. In addition, the corrosion products of NaBiO(3) catalyst under acid condition (HCl aqueous solution contained) were characterized by X-ray diffraction (XRD), transmittance electronic microscopy (TEM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and UV-vis transmittance spectrum analysis. The results showed that NaBiO(3) was unstable under the acidic condition and the catalyst could convert into Bi(3+)-containing compounds such as Bi(2)O(3), etc. The experiment demonstrates that NaBiO(3) can be corroded to nano-sized BiOCl crystal in the presence of hydrogen chloride, the band gap of which was estimated to be 3.28 eV by Tauc's approach.

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Section: Uv-vis Transmittance Spectra Analysissupporting

confidence: 83%

Photocatalytic decomposition of 4-t-octylphenol over NaBiO3 driven by visible light: Catalytic kinetics and corrosion products characterization

Chang

Huang

Cheng

et al. 2010

Journal of Hazardous Materials

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“…The photoactivity of NaBiO 3 for the degradation of MB was significantly higher than that exhibited by BiVO 4 and N-doped TiO 2 . NaBiO 3 also showed high activity for the decomposition of various dangerous organic pollutants (polycyclic aromatic hydrocarbons [362], 4-t-octylphenol [363], sodium pentachlorophenate [364]). Anyway, NaBiO 3 was not stable under acidic conditions, and could be converted into BiOCl or other Bi 3+ containing compounds in the presence of HCl [363].…”

Section: Bismutates Titanates Ferrites Niobatesmentioning

confidence: 99%

A survey of photocatalytic materials for environmental remediation

Paola¹,

García‐López²,

Marcı̀³

et al. 2012

Journal of Hazardous Materials

831

357

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Heterogeneous photocatalysis is an advanced oxidation process which has been the subject of a huge amount of studies related to air cleaning and water purification. All these processes have been carried out mainly by using TiO(2)-based materials as the photocatalysts and ca. 75% of the articles published in the last 3 years is related to them. This review illustrates the efforts in the search of alternative photocatalysts that are not based on TiO(2), with some exceptions concerning particularly innovative modifications as nanoassembled TiO(2) or TiO(2) composites with active carbon, graphite and fullerene. Papers reporting preparation, characterization and testing of binary, ternary and quaternary compounds, have been reviewed. Despite many of these photocatalysts being effective for the photodecomposition of many pollutants, most of them do not allow a complete mineralization of the starting compounds, differently from TiO(2).

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“…Presently, three types of bismuth-containing compounds have been developed: multicomponent (Bi x MO y ), such as Bi 2 WO 6 , Bi 2 O 3 , BiVO 4 , and Bi 2 O 2 CO 3 ; oxyhalides (BiOX), such as BiOX (X = Cl, Br, I); − and pentavalent bismuthates (MBiO 3 ), such as MBiO 3 (M = Na, Li, K). − Compared with other compounds, pentavalent ruthenium stands out from these Bi-containing compounds due to its high oxidizing activity and narrow band gap, which is due to the existence of empty 6s orbital in the valence band (VB) and conduction band (CB) . As a typical pentavalent bismuthate, sodium bismuthate (NaBiO 3 ) has been used to photodegrade different typical organic persistence pollutants, − indicating that it is an effective visible-light-driven photocatalyst. However, KBiO 3 , another pentavalent bismuthate, is rarely reported, even though its band gap (2.04 eV) is narrower than that of NaBiO 3 (2.46 eV).…”

Section: Introductionmentioning

confidence: 99%

KBiO₃ as an Effective Visible-Light-Driven Photocatalyst: Stability Improvement by In Situ Constructing KBiO₃/BiOX (X = Cl, Br, I) Heterostructure

Zhang

Zheng

Wang

et al. 2019

Ind. Eng. Chem. Res.

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Petal bismuth salt semiconductors are promising as visible-light-driven photocatalysts, but their short service times due to strong oxidation limit their application. In this research, the in situ construction of a p−n heterojunction, by growing BiOX on a KBiO 3 surface, is used as a strategy to improve the performance and stability. Evaluation of the photocatalytic degradation of crystal violet and phenol shows that the KBiO 3 /BiOX (X = Cl, Br, I) heterostructures exhibit significant improvement in photocatalytic performance and stability compared to KBiO 3 . The best one, KBiO 3 /(5.85%) BiOI, shows 98% degradation of crystal violet within 20 min, and of phenol within 1.5 h. No significant performance decay can be detected after repeated use. The development of KBiO 3 /BiOX heterostructure improves the applicability of KBiO 3 as an efficient visible-lightdriven photocatalyst.

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Photooxidation of Polycyclic Aromatic Hydrocarbons over NaBiO3 under Visible Light Irradiation

Cited by 30 publications

References 24 publications

Photocatalytic decomposition of 4-t-octylphenol over NaBiO3 driven by visible light: Catalytic kinetics and corrosion products characterization

Photocatalytic decomposition of 4-t-octylphenol over NaBiO3 driven by visible light: Catalytic kinetics and corrosion products characterization

A survey of photocatalytic materials for environmental remediation

KBiO₃ as an Effective Visible-Light-Driven Photocatalyst: Stability Improvement by In Situ Constructing KBiO₃/BiOX (X = Cl, Br, I) Heterostructure

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Photooxidation of Polycyclic Aromatic Hydrocarbons over NaBiO3 under Visible Light Irradiation

Cited by 30 publications

References 24 publications

Photocatalytic decomposition of 4-t-octylphenol over NaBiO3 driven by visible light: Catalytic kinetics and corrosion products characterization

Photocatalytic decomposition of 4-t-octylphenol over NaBiO3 driven by visible light: Catalytic kinetics and corrosion products characterization

A survey of photocatalytic materials for environmental remediation

KBiO3 as an Effective Visible-Light-Driven Photocatalyst: Stability Improvement by In Situ Constructing KBiO3/BiOX (X = Cl, Br, I) Heterostructure

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KBiO₃ as an Effective Visible-Light-Driven Photocatalyst: Stability Improvement by In Situ Constructing KBiO₃/BiOX (X = Cl, Br, I) Heterostructure