Effects of surface modification of TiO2 with ascorbic acid on photocatalytic decolorization of an azo dye reactions and mechanisms

Ou, Yan; Lin, Jingdong; Zou, Hong-Mei; Liao, Dai‐Wei

doi:10.1016/j.molcata.2005.06.054

Cited by 89 publications

(40 citation statements)

References 31 publications

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“…When t -BuOH, a • OH radical scavenger [59] was added at a 40 mL/L concentration, the kinetic of photocatalytic degradation of Orange II was reduced and required ca. 3.4-fold more time compared to the experiment conducted in the absence of t -BuOH (Fig.…”

Section: Resultsmentioning

confidence: 99%

High performance Ce-doped ZnO nanorods for sunlight-driven photocatalysis

Chouchene¹,

Chaabane²,

Balan³

et al. 2016

Beilstein J. Nanotechnol.

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SummaryCe-doped ZnO (ZnO:Ce) nanorods have been prepared through a solvothermal method and the effects of Ce-doping on the structural, optical and electronic properties of ZnO rods were studied. ZnO:Ce rods were characterized by XRD, SEM, TEM, XPS, BET, DRS and Raman spectroscopy. 5% Ce-doped ZnO rods with an average length of 130 nm and a diameter of 23 nm exhibit the highest photocatalytic activity for the degradation of the Orange II dye under solar light irradiation. The high photocatalytic activity is ascribed to the substantially enhanced light absorption in the visible region, to the high surface area of ZnO:Ce rods and to the effective electron–hole pair separation originating from Ce doping. The influence of various experimental parameters like the pH, the presence of salts and of organic compounds was investigated and no marked detrimental effect on the photocatalytic activity was observed. Finally, recyclability experiments demonstrate that ZnO:Ce rods are a stable solar-light photocatalyst.

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Section: Resultsmentioning

confidence: 99%

High performance Ce-doped ZnO nanorods for sunlight-driven photocatalysis

Chouchene¹,

Chaabane²,

Balan³

et al. 2016

Beilstein J. Nanotechnol.

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“…It is proved that VC can satisfy the charge separation requirements and increase the photo-effects of the cell [21,25]. Ou et al [26] reported that the surface modification of TiO 2 with VC greatly enhanced the methyl orange photocatalytic decolorization rate due to the formation of a charge-transfer bidentate complex. To our best knowledge, there is no research on waste plastics treatment by VC modification of nano-TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

High photocatalytic degradation activity of the polyvinyl chloride (PVC)–vitamin C (VC)–TiO2 nano-composite film

Yang

Gong

Peng

et al. 2010

Journal of Hazardous Materials

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“…More super oxides are generated by reacting extra free electrons existing on the modified TiO 2 surface with O 2 . This leads to the more efficient oxidations, and expanding the wavelength response range[279]. The specific removal rate of RHB with DBS-capped TiO 2 nanoparticle acted better than unmodified TiO 2 .…”

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confidence: 99%