Fabrication of Fe2TiO5/TiO2 nanoheterostructures with enhanced visible-light photocatalytic activity

In this work, we have fabricated Fe2TiO5/TiO2 heterostructures hollow nanospheres with 10 nm scale shell thickness, 220 m2 g−1 surface area and uniform distribution. Their visible photocatalytic activities for degrading pollutant are greatly enhanced.

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Effect of Co-Doped La3+/Halogen on Visible Light Photocatalytic Activity of TiO2

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.1923 ◽

2011 ◽

Vol 239-242 ◽

pp. 1923-1928

Author(s):

Qian Lin Chen ◽

Yuan Wang ◽

Chun Yan Zhong ◽

Yu Guo

Keyword(s):

Photocatalytic Activity ◽

Methyl Orange ◽

Visible Light ◽

Surface Area ◽

Visible Light Photocatalytic Activity ◽

Co Doping ◽

Hydrolysis Method ◽

Degradation Ratio ◽

Co Doped ◽

Visible Light Photocatalytic

La3+/halogen (F-, Cl-and Br-) co-doped TiO2was synthesized by alkoxide hydrolysis method. The prepared La3+/halogen TiO2photocatalysts with anatase phases and rutile phases were characterized with XRD, EDS, TEM and surface area analytic technology. Methyl orange was used as model pollutants to evaluate its visible light photocatalytic activity. The results showed that the co-doping of La3+and halogen ions improved the surface area of TiO2. Compared with 450°C and 650°C, La3+/Cl-and La3+/Br-co-doped TiO2calcined at 550°C exhibited much higher photocatalytic activity. The optimal doping ratio of La3+/F-, La3+/Cl-and La3+/Br-was 0.4, 0.6, and 0.5 ((wt%)/(wt%)), respectively. Moreover, the degradation ratio of methyl orange on La3+/halogen co-doped TiO2with the optimal ratio were all higher than the maximum degradation ratio on La3+, F-, Cl-and Br-doped TiO2prepared by the same method.

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Eco-friendly one-pot synthesis of well-adorned mesoporous g-C3N4 with efficiently enhanced visible light photocatalytic activity

Catalysis Science & Technology ◽

10.1039/c7cy00286f ◽

2017 ◽

Vol 7 (8) ◽

pp. 1726-1734 ◽

Cited By ~ 66

Author(s):

Waheed Iqbal ◽

Chunyang Dong ◽

Mingyang Xing ◽

Xianjun Tan ◽

Jinlong Zhang

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Surface Area ◽

Mass Ratio ◽

One Pot ◽

Visible Light Photocatalytic Activity ◽

One Pot Synthesis ◽

Visible Light Photocatalytic

We report a facile and eco-friendly one-pot synthesis of well-adorned mesoporous g-C3N4 material through a bubble templating strategy and involving controlling the surface area from 17 to 195 m2 g−1 by simply adjusting the mass ratio of melamine/NH4Cl.

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High-Efficiency Preparation of N-Doped Titania with High Visible Light Photocatalytic Activity Using Composite N Precursor

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.645-646.368 ◽

2015 ◽

Vol 645-646 ◽

pp. 368-374

Author(s):

Yu Long Hu ◽

Xiao Dong Zhang ◽

Hong Fang Liu ◽

Xing Peng Guo

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

High Efficiency ◽

Thermo Gravimetric Analysis ◽

Ammonium Hydroxide ◽

Gravimetric Analysis ◽

X Ray ◽

Visible Light Photocatalytic Activity ◽

Photocatalytic Activities ◽

Visible Light Photocatalytic

N-doped TiO2 nanoparticle powders were prepared efficiently by the sol-gel method using triethylamine and ammonium hydroxide as composite N precursor. The as-prepared N-doped TiO2 precursor powders were calcined at 300°C in air for 3 h and subsequently annealed at 300°C in air for 2.5 h. The samples were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, thermo-gravimetric analysis, and X-ray photoelectron spectroscopy. The visible light photocatalytic activities of as-prepared samples were evaluated by photodecomposition of methyl orange (MO). The results show that the as-prepared samples have high visible light photocatalytic activities. Triethylamine produces the N-species doped in TiO2 lattice responsible for the high visible light photocatalytic activity. Ammonium hydroxide makes the gel of the TiO2 nanoparticles nitrided by triethylamine gelate further and facilitates significantly the centrifugation of the gel. An annealing treatment can eliminate effectively the outer N species caused by ammonium hydroxide and the surface organic residues, improve effectively crystallinity, and retain the N species caused by triethylamine.

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