Visible Light Response of ZrO2 by Nitriding and its Photocatalytic Activity

2007 ◽  
Vol 544-545 ◽  
pp. 163-166
Author(s):  
Takahiro Mishima ◽  
Motohide Matsuda ◽  
Michihiro Miyake
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Uv Irradiation ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Light Response ◽  
Light Irradiation ◽  
Visible Light Response ◽  
H2 Formation

A novel Zr2ON2 catalyst was successfully prepared by nitriding ZrO2, which has a potential enough for H2 formation by the reduction of water under UV irradiation. It was found that the Zr2ON2 had a stable photocatalytic activity for water oxidation and reduction in the presence of sacrificial reagents (methanol or Ag+) under visible light irradiation (λ < 500 nm).

Visible light-driven novel g-C3N4/NiFe-LDH composite photocatalyst with enhanced photocatalytic activity towards water oxidation and reduction reaction

2015 ◽  
Vol 3 (36) ◽  
pp. 18622-18635 ◽  
Author(s):  
Susanginee Nayak ◽  
Lagnamayee Mohapatra ◽  
Kulamani Parida
Keyword(s):  
Photocatalytic Activity ◽  
Composite Materials ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Reduction Reaction ◽  
Light Irradiation ◽  
Composite Photocatalyst ◽  
Visible Light Driven

Dispersion of exfoliated CN over the surface of exfoliated LDH composite materials, and its photocatalytic water splitting under visible-light irradiation.

scholarly journals Enhanced visible light response of a WO3 photoelectrode with an immobilized fibrous gold nanoparticle assembly using an amyloid-β peptide

RSC Advances ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 1089-1092 ◽  
Author(s):  
Akira Onoda ◽  
Hirofumi Harada ◽  
Taro Uematsu ◽  
Susumu Kuwabata ◽  
Ryo Yamanaka ◽  
...  
Keyword(s):  
Visible Light ◽  
Gold Nanoparticle ◽  
Visible Light Irradiation ◽  
Amyloid Β ◽  
Light Response ◽  
Light Irradiation ◽  
Amyloid Β Peptide ◽  
Aβ Peptide ◽  
Photocurrent Generation ◽  
Visible Light Response

A WO3 photoelectrode immobilizing a fibrous gold nanoparticle (AuNP) assembly using an amyloid-β (Aβ) peptide exhibits enhanced photocurrent generation upon visible light irradiation.

Enhanced photocatalytic activity of BiVO4 coupled with iron-based complexes for water oxidation under visible light irradiation

2019 ◽  
Vol 55 (17) ◽  
pp. 2529-2532 ◽  
Author(s):  
Xiangming Liang ◽  
Junqi Lin ◽  
Xiaohu Cao ◽  
Wanjun Sun ◽  
Junyi Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Quantum Efficiency ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
High Oxygen ◽  
Light Irradiation ◽  
Apparent Quantum Efficiency ◽  
Iron Based ◽  
Oxygen Yield

Four iron complexes were used as pre-catalysts in BiVO4–NaIO3 photocatalytic water oxidation systems. The best-performing system afforded a rather high oxygen yield and apparent quantum efficiency yield of 99.1% and 44.3%, respectively.

Preparation and characterization of polypyrrole/TiO2 nanocomposite and its photocatalytic activity under visible light irradiation

2009 ◽  
Vol 24 (8) ◽  
pp. 2547-2554 ◽  
Author(s):  
Shengying Li ◽  
Mingkai Chen ◽  
Lijun He ◽  
Fei Xu ◽  
Guohu Zhao
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Response ◽  
Light Irradiation ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Degussa P25

A simple and convenient method for preparing visible light response photocatalyst polypyrrole/TiO2 (PPy/TiO2) nanocomposite was developed. The products were characterized by x-ray diffraction, transmission electron microscopy, atomic force microscopy, ultraviolet-visible, and Fourier transform infrared techniques. The results indicated that the nanohybrid was composed of anatase TiO2 and PPy and exhibited an enhanced visible light-capturing ability. Average diameters of TiO2 and PPy/TiO2 were 18 and 35 nm, respectively. The photocatalytic activity of the nanocomposite was evaluated by the degradation of methyl orange under visible light irradiation. In the presence of PPy/TiO2 nanocomposite, the degradation efficiency of methyl orange of 95.54% could be obtained under visible light irradiation within 120 min. The apparent rate constant was 2.19 × 10−2, which was better than that Degussa P25 nano-TiO2. The sensitization mechanism of PPy/TiO2 photocatalyst was discussed briefly.

scholarly journals Photocatalytic Activity ofTiO2-WO3Composites

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Beata Tryba ◽  
Michał Piszcz ◽  
Antoni W. Morawski
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Uv Irradiation ◽  
Visible Light Irradiation ◽  
Monoclinic Phase ◽  
Light Irradiation ◽  
Visible Range ◽  
High Adsorption ◽  
Absorption Of Light

TiO2-WO3photocatalysts were prepared in a vacuum evaporator by impregnation ofTiO2withWO2dissolved in anH2O2solution (30%) and followed by calcination at 400 and600∘C. XRD analyses showed that at400∘Cmonoclinic phase ofWO3was dominated whereas at600∘Cboth monoclinic and regular phases ofWO3were present. Modification ofTiO2byWO3caused increasing in the absorption of light to the visible range.TiO2and photocatalysts modified with low amount ofWO3(1–5 wt.%) showed high adsorption of Acid Red (AR) on their surface and enhanced photocatalytic activity under UV irradiation. Under visible light irradiation,TiO2-WO3photocatalysts prepared at400∘Cwere more active for AR decomposition than those prepared at600∘Csuggesting that monoclinic phase ofWO3is more active under visible light than regularWO3. AlthoughTiO2-WO3photocatalysts appeared to be active under visible light for decomposition of AR, the UV irradiation was more efficient.

Efficient photocatalytic activity of water oxidation over WO3/BiVO4 composite under visible light irradiation

2009 ◽  
Vol 54 (3) ◽  
pp. 1147-1152 ◽  
Author(s):  
Ponchio Chatchai ◽  
Yoshinori Murakami ◽  
Shin-ya Kishioka ◽  
Atsuko Y. Nosaka ◽  
Yoshio Nosaka
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Light Irradiation

CdS/Ag2S/g-C3N4 ternary composites with superior photocatalytic performance for hydrogen evolution under visible light irradiation

2021 ◽  
Vol 50 (9) ◽  
pp. 3253-3260 ◽  
Author(s):  
Shan Zhao ◽  
Junbiao Wu ◽  
Yan Xu ◽  
Xia Zhang ◽  
Yide Han ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Synergic Effect

CdS/Ag2S/g-C3N4 ternary composites showed excellent photocatalytic performance toward H2 evolution. Their improved photocatalytic activity could be attributed not only to the synergic effect, but also to the introduction of Ag2S.

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