Rapid photocatalytic degradation of PCP–Na over NaBiO3 driven by visible light irradiation

Chang, Xiaofeng; Ji, Guangbin; Sui, Qian; Huang, Jun; Yu, Gang

doi:10.1016/j.jhazmat.2008.11.126

Cited by 43 publications

(21 citation statements)

References 23 publications

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“…9a which shows the dosage effect on the removal performance, the maximum removal efficiency of 89.3% (after 1 h reaction) was achieved under the dosage of 0.15 g/100 mL, by using laser energy of 131 mJ. As expected, it was found that as the dosage increases, the degradation efficiency increases, but the degradation rate decreases and almost reaches to saturation limit and this finding is in agreement with the previous reports [18,36]. From Fig.…”

Section: Resultssupporting

confidence: 90%

“…To date, several methods have been adopted for the solid-based band/electronic structure measurement and speculation, such as ultraviolet photoelectron spectroscopy (UPS) [28], flatband-potential-determination based photoeletrochemical techniques [29][30][31], atom's Mulliken electronegativity theory [6,27,[32][33][34][35][36][37][38] and density functional theory (DFT) calculation based on plane wave pseudo potential method [39][40][41]. The band-gap width, CB/VB of the catalysts series BiOX (X = F, Cl, Br, I) semiconductor were calculated by means of DFT method [42].…”

Section: Resultsmentioning

confidence: 99%

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Adsorption and degradation performance of Rhodamine B over BiOBr under monochromatic 532nm pulsed laser exposure

Gondal

Chang

Ali

et al. 2011

Applied Catalysis A: General

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Adsorption and degradation performance of Rhodamine B over BiOBr under monochromatic 532nm pulsed laser exposure

Gondal

Chang

Ali

et al. 2011

Applied Catalysis A: General

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“…Apart from Bi (III) containing compounds, Bi (V) containing compounds have also been reported as active photocatalysts. [22][23][24][25][26] NaBiO 3 exhibits much higher activity compared to BiVO 4 and n-doped TiO 2 for the decomposition of methylene blue (MB) under visible light. The attractive performance of NaBiO 3 is ascribed to its band structure where the CB consists of hybridized Na (3s) and O (2p) orbitals that exhibit large dispersion with high mobility for photo-excited electrons.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic properties of KBiO3 and LiBiO3 with tunnel structures

et al. 2011

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In the present study, KBiO 3 is synthesized by a standard oxidation technique while LiBiO 3 is prepared by hydrothermal method. The synthesized catalysts are characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), BET surface area analysis and Diffuse Reflectance Spectroscopy (DRS). The XRD patterns suggest that KBiO 3 crystallizes in the cubic structure while LiBiO 3 crystallizes in orthorhombic structure and both of these adopt the tunnel structure. The SEM images reveal micron size polyhedral shaped KBiO 3 particles and rod-like or prismatic shape particles for LiBiO 3 . The band gap is calculated from the diffuse reflectance spectrum and is found to be 2.1 eV and 1.8 eV for KBiO 3 and LiBiO 3 , respectively. The band gap and the crystal structure data suggest that these materials can be used as photocatalysts. The photocatalytic activity of KBiO 3 and LiBiO 3 are evaluated for the degradation of anionic and cationic dyes, respectively, under UV and solar radiations.

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“…Their results show that NaBiO 3 presented an efficient degradation towards the organic compounds. The photocatalytic degradation of sodium pentachlorophenate (PCP-Na) and 4-t-octylphenol (4-t-OP) over NaBiO 3 under visible light irradiation was reported by Chang et al [13,14]. Their results show that PCP-Na and 4-t-OP in aqueous solutions can be efficiently decomposed in the NaBiO 3 /visible light process.…”

Section: Introductionmentioning

confidence: 94%

“…The TiO 2 showed little photocatalytic activity (degradation rate less than 6%) under the visible light irradiation, because of its UV-only sensitive property [13]. Compared to TiO 2 photocatalyst, NaBiO 3 exhibited an extremely efficient photocatalytic performance (degradation rate is over 99%) towards AO under visible light irradiation.…”

Section: Effect Of Catalyst Dosagementioning

confidence: 99%

Photocatalytic Degradation of Acridine Orange over NaBiO3 Driven by Visible Light Irradiation

Chen

Huang

et al. 2013

Catalysts

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Abstract:The photocatalytic degradation of acridine orange (AO) dye by NaBiO 3 photocatalyst under visible light irradiation was investigated systematically. The NaBiO 3 photocatalyst exhibited a higher photocatalytic activity compared to the P25 photocatalyst. After 160 min of photocatalytic reaction, the degradation rate of AO could reach to 99% in appropriate conditions. Factors, such as catalyst dosage, solution pH, initial AO concentration and the presence of anions, were found to influence the degradation rate. To scrutinize the mechanistic details of the dye photodegradation, the intermediates of the processes were separated, identified and characterized by the HPLC-ESI-MS technique. The analytical results indicated that the N-de-methylation degradation of AO dye took place in a stepwise manner to yield mono-, di-, tri-and tetra-N-de-methylated AO species generated during the processes. The probable photodegradation pathways were proposed and discussed.

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Rapid photocatalytic degradation of PCP–Na over NaBiO3 driven by visible light irradiation

Cited by 43 publications

References 23 publications

Adsorption and degradation performance of Rhodamine B over BiOBr under monochromatic 532nm pulsed laser exposure

Adsorption and degradation performance of Rhodamine B over BiOBr under monochromatic 532nm pulsed laser exposure

Photocatalytic properties of KBiO3 and LiBiO3 with tunnel structures

Photocatalytic Degradation of Acridine Orange over NaBiO3 Driven by Visible Light Irradiation

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