Design of an alkaline pyridyl acceptor-based calix[4]arene dye and synthesis of stable calixarene–TiO2 porous hybrid materials for efficient photocatalysis

2020 ◽  
Vol 8 (18) ◽  
pp. 8883-8891 ◽  
Author(s):  
Yu-Hui Zhong ◽  
Yang Lei ◽  
Jian-Feng Huang ◽  
Li-Min Xiao ◽  
Xin-Lun Chen ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Hybrid Material ◽  
Sol Gel ◽  
Pt Nanoparticles ◽  
Rhenium Complexes ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photocatalytic Activities

A porous hybrid material C4BTP–TiO2 has been prepared by a sol–gel method. When Pt nanoparticles or rhenium complexes are loaded, the hybrids show expandable photocatalytic activities for H2 evolution from water and CO2 reduction to CO, respectively.

Synthesis of PCEC-CaO-SiO2 Hybrid Materials by Sol-Gel Method

2014 ◽  
Vol 898 ◽  
pp. 37-40
Author(s):  
Xiao Tian Ke ◽  
Cao Huang ◽  
Jin Ling Zhang ◽  
Gang Wu
Keyword(s):  
Compressive Strength ◽  
Hybrid Materials ◽  
Hybrid Material ◽  
Sol Gel ◽  
Brittle Crack ◽  
Gel Method ◽  
Sol Gel Method ◽  
Organic Components ◽  
End Groups

PCEC-CaO-SiO2hybrid material was synthesized by a two steps method. FTIR results proved the structure of the telechelic PCEC with triethoxysilane-propyl end groups synthesized in the first step. Then the PCEC-CaO-SiO2hybrid material was synthesized by Sol-gel method. The chemical link between the functionalized polymer and the organic components prevent the hybrid materials brittle crack. The compressive strength was increased with the inorganic contents increasing in the hybrid materials. The hydrophilic PEG contents of PCEC accelerate the hydroxyapatite deposition on the hybrid materials after it was soaked in the SBF for a period of time.

Facile synthesis of porous hybrid materials based on Calix-3 dye and TiO2 for high photocatalytic water splitting performance with excellent stability

2019 ◽  
Vol 7 (7) ◽  
pp. 2993-2999 ◽  
Author(s):  
Jian-Feng Huang ◽  
Jun-Min Liu ◽  
Li-Min Xiao ◽  
Yu-Hui Zhong ◽  
Liang Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Hybrid Materials ◽  
Hybrid Material ◽  
Sol Gel ◽  
Pt Nanoparticles ◽  
Facile Synthesis ◽  
Gel Method ◽  
Photocatalytic Water Splitting ◽  
First Time ◽  
Excellent Stability

A highly robust hybrid material Calix-3-TiO2 based on calixarene dye and TiO2 is prepared by a facile sol–gel method for the first time. When Pt nanoparticles are introduced onto the hybrid, the catalysts display efficient and persistent photocatalytic water splitting activities.

A porous hybrid material based on calixarene dye and TiO2 demonstrating high and stable photocatalytic performance

2019 ◽  
Vol 7 (34) ◽  
pp. 19852-19861 ◽  
Author(s):  
Yi-Fan Chen ◽  
Jian-Feng Huang ◽  
Min-Hui Shen ◽  
Jun-Min Liu ◽  
Li-Bo Huang ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Dual Function ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photocatalytic Activities

A facile strategy to prepare a robust porous hybrid material (HO-TPA-TiO2) is presented by combining TiO2 with calixarene dye, HO-TPA, through a simple sol–gel method, offering efficient and persistent dual-function photocatalytic activities.

Study on the Influence Factors of ZnFe2O4 and TiO2 Composite Films Photoelectrocatalytic Properties

2011 ◽  
Vol 287-290 ◽  
pp. 2199-2202
Author(s):  
Gui Qin Hou ◽  
Wen Li Zhang ◽  
Shui Jing Gao ◽  
Xiao Yan Wang
Keyword(s):  
Methyl Orange ◽  
Sol Gel ◽  
Composite Films ◽  
Influence Factors ◽  
Nanocomposite Films ◽  
Gel Method ◽  
Sol Gel Method ◽  
Conductive Glass ◽  
Photocatalytic Activities ◽  
Film Layer

The ZnFe2O4 and TiO2 nanocomposite films was prepared by Sol-Gel method on conductive glass, and the influence factors of it’s photoelectrocatalytic performence such as the film layer, pole and voltage was investigated. The results indicated that: the photocatalytic effects of composite films with ZnFe2O4+ TiO2+ ZnFe2O4 was the best. The decomposing ratio of methyl orange with the photoelectrocatalysis of composite films at voltage 0.2-6V all increased unstably.At the same time, the distance from films to pole plank also had the effects on the photocatalytic activities of the films.

Photocatalytic Activities of Ce3+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 239-242 ◽  
pp. 1850-1853
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Photocatalytic Activities

A series of TiO2 thin films with and without Ce3+ doping were successfully obtained on microscope glass slides by sol-gel method. The photocatalytic activities of the pure TiO2 and Ce3+-doped TiO2 thin films were evaluated by the degradation of rhodamine B solution. The effects of both Ce3+ contents and annealing temperatures on the photocatalytic activities of the samples were examined. The results indicated that the TiO2 thin film with an atomic ratio of Ti:Ce=5:1 annealed at 300°C had a higher photocatalytic activity among the samples.

Synthesis of an Organic–Inorganic Alq3-Based Hybrid Material by Sol–Gel Method

2014 ◽  
Vol 25 (4) ◽  
pp. 680-686 ◽  
Author(s):  
Sina Modiri ◽  
Mohsen Mohseni ◽  
Ezzedin Mohajerani ◽  
Elaheh Kowsari
Keyword(s):  
Hybrid Material ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Preparation of Zno-Cr2O3 Composites by a Sol-Gel Method and their Photocatalytic Activities

2012 ◽  
Vol 151 ◽  
pp. 365-367 ◽  
Author(s):  
Kai Yuan Gu ◽  
Zhan En Peng ◽  
Jin Hua Feng ◽  
Feng Qiang Sun
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Sol Gel ◽  
Mercury Lamp ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photocatalytic Activities ◽  
Degradation Of Methyl Orange

The ZnO-Cr2O3 composites with different complex proportion were prepared by a sol-gel method. The mol ratio of Zn and Cr element could be tuned by controlling the concentration of the precursors. These composites showed photocatalytic activities in degradation of methyl orange under the irradiation of 300W mercury lamp. And the activities regularly varied with the mol ratio of Zn and Cr. When n（Zn）:n（Cr）=10:1, a composite with best photocatalytic activity could be obtained.

Characterization and Photocatalytic Activity of FeVO4 Photocatalysts Synthesized via a Surfactant-Assisted Sol-Gel Method

2011 ◽  
Vol 197-198 ◽  
pp. 926-930
Author(s):  
Min Wang ◽  
Qiong Liu ◽  
Chen Zhi Jiang
Keyword(s):  
Photocatalytic Activity ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Experimental Conditions ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photodegradation Rate ◽  
Photocatalytic Activities ◽  
Xrd Patterns ◽  
Surfactant Assisted

FeVO4photocatalysts were synthesized via a surfactant-assisted sol-gel method and characterized with X-ray diffraction (XRD), scanning electron microsoope （SEM）and specific surface area (BET). The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange (MO) solution under visible light. The XRD patterns of no-surfactant-assisted, PEG-assisted, CTAB-assisted and SDS-assisted FeVO4, indicate that diffraction peaks can be well indexed as triclinc FeVO4. And the crystalline sizes of samples were evaluated as 113, 69, 66, 76 nm for FVO, FVO-PEG, FVO-CATB and FVO-SDS respectively.The addition of surfactant woul greatly affect the morphology of FeVO4photocatalysts, which can lead to different photocatalytic activities between them. In the experimental conditions used, the PEG-assisted FeVO4product had a much higher photocatalytic activity (the photodegradation rate was about 77% or so in 14h) than the other three products.

Photocatalytic Activities of Fe3+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 233-235 ◽  
pp. 1655-1658
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Photocatalytic Activities ◽  
Rhodamine B Dye

TiO2 and different contents Fe3+-doped TiO2 thin films were successfully obtained on microscope glass slides by Sol-Gel method. Then the photocatalytic activities of the samples were evaluated by the degradation of Rhodamine B dye solution. The effects of both annealing temperatures and Fe3+ contents on the photocatalytic activities of TiO2 thin films were examined. The results indicated that the sample with an atomic ratio of Ti:Fe=7:3 annealed at 500°C had a higher photocatalytic activity.

Preparation and the PL Properties of Er3+ - Ce3+ Co-Doped TiO2 Powders

2014 ◽  
Vol 528 ◽  
pp. 30-33
Author(s):  
Ling Yun Bai ◽  
Long Fa Jiang ◽  
Jun Huai Xiang
Keyword(s):  
Hybrid Materials ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Hybrid Matrix ◽  
Peak Intensity ◽  
Dispersion Effects ◽  
Co Doped

The 0.5-3.0 mol% Er3+-Ce3+ co-doped TiO2 powders have been prepared by sintering the hybrid materials Er0.5Ce0.5(AA)3phen-doped TiO2/PMMA, which were prepared by sol-gel method, using the modified titanium (IV) n-butoxide [Ti(O-Bu)4-x(AAPhen)x] as precursors which were given by the chelate reaction between Ti(O-Bu)4, AA and Phen at 70°C. The hybrid matrix TiO2/PMMA improved the dispersion of Er3+, which caused an enhancement in the photoluminescence (PL) peak intensity at 1.53 mm of the 1 mol% Er (AA)3phen-doped TiO2/PMMA powders sintered at 700 °C of about 23 times higher than that only had TiO2 as its matrix. When co-doped with Ce3+, the above ratio of the PL peak intensity was raised to 75 times, which illustrated the obvious sensitization and dispersion effects of Ce3+ on Er3+.

Sign in / Sign up

Export Citation Format

Share Document