Room-Temperature Hydrolysis of Potassium Titanyl Oxalate and Water-Assisted Crystallization for TiO2 with High Photocatalytic Activity

2017 ◽  
Vol 2 (18) ◽  
pp. 5025-5031 ◽  
Author(s):  
Lu-Lu Lai ◽  
Wei Wen ◽  
Jin-Ming Wu
Keyword(s):  
Photocatalytic Activity ◽  
Room Temperature ◽  
High Photocatalytic Activity ◽  
Hydrolysis Of ◽  
Titanyl Oxalate

scholarly journals On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions

2018 ◽  
Vol 17 (6) ◽  
pp. 521-527
Author(s):  
V. A. Gorbunova ◽  
L. M. Sliapniova
Keyword(s):  
Photocatalytic Activity ◽  
Oxidation Reaction ◽  
High Photocatalytic Activity ◽  
Organic Dye ◽  
Iron Ions ◽  
Physico Chemical ◽  
Photocatalytic System ◽  
Initial Suspension ◽  
Hydrolysis Of ◽  
Chemical Water

. The photocatalytic activity of three systems, promising for chemical water purification technologies, was experimentally compared, based on a combination of titanium dioxide/(Fe(II, III)), applying to the model oxidation reaction of methylorange organic dye in an aqueous medium. Herewith the cases of photocatalytic systems were investigated, which are based on: a) titania hydrosol obtained by hydrolysis of titanium isobutylate; b) a similar hydrosol with addition of Fe(III) ions; c) suspension of ilmenite powder based on FeTiO3. As a result of the investigation, the increase of the rate of destruction of methylorange by more than two times was found in the system with the introduction of a small amount of iron ions into initial suspension of the TiO2 hydrosol (at the obtaining a medium with the Fe3+ concentration up to 3.7 × 10–5 M). In the photocatalytic system, based on the suspension of pretreated (with suphation and calcination) ilmenite powder, enough high photocatalytic activity (the degree of methylorange decomposition up to 77 %) was measured but at a higher exposure than for the case of systems based on the TiO2 hydrosol. For the photocatalytic systems of the type being investigated, a possible mechanism of increasing their oxidative activity was briefly considered, which requires an additional physico-chemical analysis.

Photoluminescence and photocatalytic activity of a 3D framework based on 4,4′-bis(1,2,4-triazol-1-ylmethyl)biphenyl as a ligand for cadmium

2019 ◽  
Vol 74 (7-8) ◽  
pp. 553-558
Author(s):  
Chen Zhang ◽  
Ning-Ning Chen ◽  
Jian-Qing Tao
Keyword(s):  
Thermal Analysis ◽  
Photocatalytic Activity ◽  
Phthalic Acid ◽  
Room Temperature ◽  
Three Dimensional ◽  
High Photocatalytic Activity ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Framework ◽  
3D Framework

AbstractA novel three-dimensional Cd(II) coordination framework, [Cd(PTA)(BTBP)0.5 · H2O]n (1) (BTBP =  4,4′-bis(1,2,4-triazol-1-ylmethyl)biphenyl; H2PTA = p-phthalic acid), has been prepared and characterized through IR spectroscopy, elemental and thermal analysis, and single-crystal X-ray diffraction. The complex is a 5-connected network with the {45 · 66} topology based on Cd-μ2-H2O-Cd chains. It exhibits strong fluorescent emission in the solid state at room temperature. Moreover, complex 1 shows high photocatalytic activity in the degradation of methylene blue under UV irradiation.

scholarly journals Ni-Doped Protonated Layered Titanate/TiO2 Composite with Efficient Photocatalytic Activity for NO x Decomposition Reactions

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Kanji Saito ◽  
Shota Orikasa ◽  
Yusuke Asakura ◽  
Yusuke Ide ◽  
Yoshiyuki Sugahara ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Room Temperature ◽  
High Photocatalytic Activity ◽  
Solid State Reactions ◽  
Decomposition Reactions ◽  
Ni Content ◽  
Layered Titanate ◽  
Different Temperatures ◽  
Lower Temperature

A unique structural transformation of a lepidocrocite-type layered titanate, K0.8Ti1.73Li0.27O4, into a rutile-type TiO2 has recently been realized via dilute HCl treatment and subsequent drying at room temperature for producing rutile-nanoparticle-decorated protonated layered titanate exhibiting highly efficient photocatalytic activity. Herein, the authors report synthesis of a lepidocrocite-type layered cesium titanate with nominal compositions of C s 0.7 T i 1.825 ‐ x / 2 N i x □ 0.175 ‐ x / 2 O 4 ( x = 0 , 0.05, 0.1, and 0.35) through solid-state reactions of Cs2CO3, TiO2, and Ni(CH3COO)2·4H2O at different temperatures (600 or 800°C), followed by treatment with dilute HCl and subsequent drying to produce a Ni-doped protonated layered titanate/TiO2 composite. C s 0.7 T i 1.825 ‐ x / 2 N i x □ 0.175 ‐ x / 2 O 4 with an optimized Ni content obtained at a lower temperature was converted into a Ni-doped protonated layered titanate/TiO2 composite to exhibit high photocatalytic activity for NO x decomposition reactions.

Preparation of 1D ultrathin niobate nanobelts by liquid exfoliation as photocatalysts for hydrogen generation

2019 ◽  
Vol 55 (17) ◽  
pp. 2417-2420
Author(s):  
Fangrui Cheng ◽  
Xin Jiang ◽  
Zepeng Zhang ◽  
Renzhi Ma ◽  
Takayoshi Sasaki ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Driving Force ◽  
Hydrogen Generation ◽  
High Photocatalytic Activity ◽  
One Dimensional ◽  
Liquid Exfoliation ◽  
Hydrolysis Of

The original driving force for the exfoliation of RbNbO3 to form one-dimensional (1D) niobate nanobelts is the combination of the hydration of Rb+ and the hydrolysis of (NbO3)nn− and the 1D ultrathin nanobelts show high photocatalytic activity.

scholarly journals Synthesis of titanium(IV) oxide of ultra-high photocatalytic activity: high-temperature hydrolysis of titanium alkoxides with water liberated homogeneously from solvent alcohols

1999 ◽  
Vol 144 (1) ◽  
pp. 165-171 ◽  
Author(s):  
Hiroshi Kominami ◽  
Jun-ichi Kato ◽  
Shin-ya Murakami ◽  
Yoshiya Kera ◽  
Masashi Inoue ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
High Temperature ◽  
High Photocatalytic Activity ◽  
Titanium Alkoxides ◽  
Hydrolysis Of

scholarly journals Study of the Effect of Titanium Dioxide Hydrosol on the Photocatalytic and Mechanical Properties of Paper Sheets

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1326 ◽  
Author(s):  
Roberta Grazia Toro ◽  
Mohamed Diab ◽  
Tilde de Caro ◽  
Mona Al-Shemy ◽  
Abeer Adel ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Atmospheric Pressure ◽  
Aging Process ◽  
Room Temperature ◽  
Barrier Properties ◽  
Anatase Tio2 ◽  
Titanium Butoxide ◽  
Hydrolysis Of

Different amounts of a stable aqueous TiO2 hydrosol were used to fabricate paper sheets having photocatalytic activity. The TiO2 hydrosol was prepared in aqueous medium using titanium butoxide as precursor and acetic acid as catalyst for the hydrolysis of titanium butoxide. An aging process at room temperature and atmospheric pressure was finally applied to obtain crystalline anatase TiO2 hydrosol. The effects of different TiO2 hydrosol loadings on the mechanical strength and barrier properties of modified paper sheets were investigated in detail. The photocatalytic behavior of TiO2-modified paper sheets was investigated as well using methylene blue (MB) as target pollutant.

Facile and Fast Deposition of Amorphous TiO2Film under Atmospheric Pressure and at Room Temperature, and its High Photocatalytic Activity under UV-C Light

2013 ◽  
Vol 20 (1-2-3) ◽  
pp. 8-13 ◽  
Author(s):  
Zhi-Guang Sun ◽  
Xiao-Song Li ◽  
Xiaobing Zhu ◽  
Xiao-Qing Deng ◽  
Da-Lei Chang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
High Photocatalytic Activity ◽  
Uv C

Synthesis of titania particles with high photocatalytic activity by high-temperature hydrolysis of TTIP in gas phase

2012 ◽  
Vol 12 (2/3/4) ◽  
pp. 204
Author(s):  
Toko Yamakawa ◽  
Yoshiaki Hukuhara ◽  
Yuka Sakai ◽  
Hideki Suganuma ◽  
Shigeru Kato ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
High Temperature ◽  
Gas Phase ◽  
High Photocatalytic Activity ◽  
Hydrolysis Of

Preparation of Z-scheme AgI/Bi5O7I plate with high visible light photocatalytic performance by phase transition and morphological transformation of BiOI microspheres at room temperature

2018 ◽  
Vol 47 (33) ◽  
pp. 11420-11428 ◽  
Author(s):  
Nan Yang ◽  
Xiang Lv ◽  
Suting Zhong ◽  
Danlin Qian ◽  
Sujuan Han ◽  
...  
Keyword(s):  
Phase Transition ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Transformation Process ◽  
High Photocatalytic Activity ◽  
Morphological Transformation ◽  
Visible Light Photocatalytic

Z-scheme AgI/Bi5O7I plate composite fabricated at room temperature through phase transition and morphological transformation process with high photocatalytic activity.

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