Synthesis and characterization of Pt/BiOI nanoplate catalyst with enhanced activity under visible light irradiation

Yu, Changlin; Yu, Jimmy C.; Fan, Caifeng; Wen, He‐Rui; Hu, Shengjie

doi:10.1016/j.mseb.2009.11.029

Cited by 166 publications

(74 citation statements)

References 42 publications

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“…Photocatalytic decomposition on semiconductors has been a promising method for the elimination of organic pollutants in water and in the atmosphere [1][2][3]. Among photocatalysts, TiO 2 has received the most attention because of its superior photocatalytic activity, chemical stability, low cost, and nontoxicity [4,5].…”

Section: Introductionmentioning

confidence: 99%

WO3 Coupled P-TiO2 Photocatalysts with Mesoporous Structure

Zhou

et al. 2010

Catal Lett

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A series of WO 3 coupled P-doped TiO 2 photocatalysts with mesoporous structure were synthesized by the decomposition of the doped H 3 PW 12 O 40 precursor in the framework of TiO 2 . The effects of P doping and WO 3 coupling on the structures, surface acidity, and optical properties of TiO 2 were investigated by TGA, DSC, FT-IR, XRD, NH 3 -TPD, SEM, TEM, XPS, UV-Vis DRS, PL, and BET surface areas. Results show that the presence of phosphorus adds thermal stability to the mesoporous TiO 2 framework and addition of WO 3 greatly increases the Lewis acidity of the catalyst, which leads to a higher affinity for the reaction molecules. Moreover, WO 3 coupling and P doping extent light response to the visible region due the formation of extra energy levels within the band gap. The samples show high visible light photocatalytic efficiency for the degradation of methylene blue. This is mainly attributed to good visible light absorption, high adsorption affinity toward organic molecules and the low recombination rate of photogenerated electron/hole pairs.

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Section: Introductionmentioning

confidence: 99%

WO3 Coupled P-TiO2 Photocatalysts with Mesoporous Structure

Zhou

et al. 2010

Catal Lett

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“…1,[9][10][11] Indeed, the doping of BiOBr with I or Pb may narrow the band gap of BiOBr significantly. 6,12 However, the activity of doped photocatalysts is usually sensitive to both the doping level and homogeneity. 5 In contrast, combining two semiconductors with different band gaps to form heterojunctions, such as BiOCl/Bi 2 O 3 and AgI/BiOI, 8,13 is more flexible than doping for broadening the visible-light absorption and less sensitive to the component homogeneity (i.e.…”

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confidence: 99%

Exceptional visible-light-driven photocatalytic activity over BiOBr–ZnFe2O4 heterojunctions

et al. 2011

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An ultrasound-assisted, precipitation-deposition method has been developed to synthesise visible-light-responsive BiOBr-ZnFe 2 O 4 heterojunction photocatalysts. The heterojunctions with suitable BiOBr/ZnFe 2 O 4 ratios have a fascinating micro-spherical morphology and exhibit exceptional photocatalytic activity in visible-light degradation of Rhodamine B.The semiconductor BiOBr has recently stimulated intensive interest in solar energy conversion due to its high photocatalytic activity and stability under UV and visible light irradiation.

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“…TP2 had undergone the photoluminescence (PL) analysis at low activation energy irradiation to observe the effect of C=O activation under visible light irradiation. The PL emission spectra can be used to reveal the efficiency of charge carrier trapping, immigration and transfer and to understand the fate of photo-induced electrons and holes in a semiconductor [52,53]. It is known that the PL spectrum is the result of the recombination of excited electrons and holes where the lower PL intensity means a lower recombination rate of electron-hole pairs under light irradiation [54].…”

Section: Uv-vis Drs and Visible Light Photodegradation Studiesmentioning

confidence: 99%

The Preparation and Characterization of Immobilized TiO2/PEG by Using DSAT as a Support Binder

et al. 2016

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Immobilized TiO 2 was prepared by adding a small composition of polyethylene glycol (PEG) as a binder, and this paper reported for the very first time the formation of C=O from oxidized PEG, which acted as an electron injector in enhancing photoactivity. Water-based TiO 2 with PEG formulation was deposited by using a brush technique onto double-sided adhesive tape (DSAT) as a support binder to increase the adhesiveness of immobilized TiO 2 . The photocatalytic activity of immobilized TiO 2 -PEG was measured by photodegradation of 12 mg·L −1 methylene blue (MB) dye. The optimum condition of immobilized TiO 2 -PEG was observed at TiO 2 /PEG-2 (TP2) with 10:0.1 for the TiO 2 /PEG ratio, which resulted in a 1.8-times higher photodegradation rate as compared to the suspension mode of pristine TiO 2 . The high photodegradation rate was due to the formation of the active C=O bond from oxidized PEG binder in immobilized TiO 2 -PEG as observed by Fourier transform infrared and X-ray photoelectron spectroscopy analyses. The presence of C=O has escalated the photoactivity by forming an electron injector to a conduction band of TiO 2 as proven by higher photoluminescence intensity obtained for TP2 as compared to pristine TiO 2 . The TP2 sample has also increased its adhesiveness when DSAT is applied as a support binder where it can be recycled up to eight times and comparable to recent photocatalysis cycle developments.

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Synthesis and characterization of Pt/BiOI nanoplate catalyst with enhanced activity under visible light irradiation

Cited by 166 publications

References 42 publications

WO3 Coupled P-TiO2 Photocatalysts with Mesoporous Structure

WO3 Coupled P-TiO2 Photocatalysts with Mesoporous Structure

Exceptional visible-light-driven photocatalytic activity over BiOBr–ZnFe2O4 heterojunctions

The Preparation and Characterization of Immobilized TiO2/PEG by Using DSAT as a Support Binder

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