scholarly journals Pt/TiO2 Coupled with Water-Splitting Catalyst for Organic Pollutant Photodegradation: Insight into the Primary Reaction Mechanism

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
Zizhong Zhang ◽  
Xuxu Wang ◽  
Jinlin Long ◽  
Xianliang Fu ◽  
Zhengxin Ding ◽  
...  
Keyword(s):  
Water Splitting ◽  
Organic Pollutants ◽  
Uv Light ◽  
Active Oxygen Species ◽  
Organic Pollutant ◽  
Photometric Method ◽  
Promoting Effect ◽  
Uv Light Irradiation ◽  
Insight Into

A composited system was fabricated by coupling Pt/TiO2 with water-splitting catalyst for photooxidation of organic pollutants in aqueous solutions. The new composited system exhibits more efficient photocatalytic activity than pure Pt/TiO2 does under UV light irradiation. The promoting effect is dependent on the photo-produced H2 over the composited system. The active oxygen species, hydroxyl radical (·OH) and hydrogen peroxide (H2O2), are measured by fluorescence spectroscopy and photometric method, respectively. The results reveal that the produced H2 by photocatalytic water splitting over NiO/NaTaO3:La transfers to Pt particle of TiO2 surface, then reacts with introducing O2 to generate in situ intermediate H2O2, and finally translates into ·OH radical to accelerate the photooxidation of organic pollutants.

A novel in situ preparation method for nanostructured α-Fe2O3 films from electrodeposited Fe films for efficient photoelectrocatalytic water splitting and the degradation of organic pollutants

2015 ◽  
Vol 3 (8) ◽  
pp. 4345-4353 ◽  
Author(s):  
Qingyi Zeng ◽  
Jing Bai ◽  
Jinhua Li ◽  
Ligang Xia ◽  
Ke Huang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Organic Pollutants ◽  
Preparation Method ◽  
Organic Pollutant ◽  
Pollutant Degradation ◽  
In Situ Preparation ◽  
Organic Pollutant Degradation ◽  
Pec Water Splitting

Highly photoactive α-Fe2O3 films prepared from novel electrodeposited Fe films were reported for PEC water splitting and organic pollutant degradation.

scholarly journals Anatase TiO2 nanoparticle coating on porous COK-12 platelets as highly active and reusable photocatalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (52) ◽  
pp. 46678-46685 ◽  
Author(s):  
L. H. Wee ◽  
M. Meledina ◽  
S. Turner ◽  
K. Custers ◽  
S. Kerkhofs ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Organic Pollutants ◽  
Uv Light ◽  
Anatase Tio2 ◽  
Light Irradiation ◽  
Ordered Mesoporous Silica ◽  
Nanoparticle Coating ◽  
Highly Active ◽  
Uv Light Irradiation ◽  
Ordered Mesoporous

Coating of anatase TiO2 nanoparticles on ordered mesoporous silica COK-12 platelets for effective photodegradation of various organic pollutants under UV light irradiation.

scholarly journals Photocatalytic Degradation of Methylene Blue under UV Light Irradiation on Prepared CarbonaceousTiO2

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Zatil Amali Che Ramli ◽  
Nilofar Asim ◽  
Wan N. R. W. Isahak ◽  
Zeynab Emdadi ◽  
Norasikin Ahmad-Ludin ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
In Situ Polymerization ◽  
Uv Light ◽  
Carbon Composite ◽  
Light Irradiation ◽  
Uv Light Irradiation ◽  
Transmission Electron ◽  
Vis Spectroscopy

This study involves the investigation of altering the photocatalytic activity of TiO2using composite materials. Three different forms of modified TiO2, namely, TiO2/activated carbon (AC), TiO2/carbon (C), and TiO2/PANi, were compared. The TiO2/carbon composite was obtained by pyrolysis of TiO2/PANi prepared by in situ polymerization method, while the TiO2/activated carbon (TiO2/AC) was obtained after treating TiO2/carbon with 1.0 M KOH solution, followed by calcination at a temperature of 450°C. X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), thermogravimetric analysis (TG-DTA), Brunauer-Emmet-Teller (BET), and UV-Vis spectroscopy were used to characterize and evaluate the prepared samples. The specific surface area was determined to be in the following order: TiO2/AC > TiO2/C > TiO2/PANi > TiO2(179 > 134 > 54 > 9 m2 g−1). The evaluation of photocatalytic performance for the degradation of methylene blue under UV light irradiation was also of the same order, with 98 > 84.7 > 69% conversion rate, which is likely to be attributed to the porosity and synergistic effect in the prepared samples.

In situ growth and optical gas adsorption performance of Zn(ii) metal–organic framework membranes at room temperature

The Analyst ◽  
2019 ◽  
Vol 144 (16) ◽  
pp. 4887-4896 ◽  
Author(s):  
Mariyemu Tuergong ◽  
Patima Nizamidin ◽  
Abliz Yimit ◽  
Rena Simayi
Keyword(s):  
Room Temperature ◽  
Gas Adsorption ◽  
Uv Light ◽  
Metal Organic Framework ◽  
Adsorption Behaviors ◽  
Uv Light Irradiation ◽  
Unit Surface ◽  
Metal Organic ◽  
First Time

The optical gas adsorption behaviors of [Zn2(bdc)2(dpNDI)]n membranes were studied for the first time. Under UV light irradiation, they exhibited a greater adsorption response to xylene gas with adsorption capacity of 6.46 μg cm−2 per unit surface.

Solvothermal Synthesis of Ca2Nb2O7 Fine Particles and Their High Activity for Photocatalytic Water Splitting into H2 and O2 under UV Light Irradiation

2015 ◽  
Vol 44 (7) ◽  
pp. 1001-1003 ◽  
Author(s):  
Akitoshi Nakamura ◽  
Osamu Tomita ◽  
Masanobu Higashi ◽  
Saburo Hosokawa ◽  
Tsunehiro Tanaka ◽  
...  
Keyword(s):  
High Activity ◽  
Water Splitting ◽  
Solvothermal Synthesis ◽  
Fine Particles ◽  
Uv Light ◽  
Light Irradiation ◽  
Photocatalytic Water Splitting ◽  
Uv Light Irradiation

Montmorillonite Incorporated in Cr Doped ZnO Nanoparticles for Degradation of Organic Dyes in Water under UV Light Irradiation

2015 ◽  
Vol 1123 ◽  
pp. 316-321 ◽  
Author(s):  
Vici Tritella Carmida ◽  
Mia Putri Rahmawati ◽  
Nadia Febiana Djaja ◽  
Rosari Saleh
Keyword(s):  
Methylene Blue ◽  
Zno Nanoparticles ◽  
Congo Red ◽  
Organic Dyes ◽  
Uv Light ◽  
Organic Pollutant ◽  
Light Irradiation ◽  
Precipitation Method ◽  
Uv Light Irradiation ◽  
Doped Zno

In this study, the photocatalytic degradation of methylene blue and congo red has been investigated using montmorillonite modified Cr-doped ZnO nanoparticles. Chromium doped zinc oxide nanoparticles were synthesized by co-precipitation method and were characterized using X-ray diffraction, Fourier-transform infrared absorption and UV-visible spectrophotometer. Furthermore these nanoparticles were explored to degradation of methylene blue and congo red in aqueous solution as model of organic pollutant under UV light irradiation. Comparison of degradation efficiency demonstrated that Cr-doped ZnO nanoparticles modified montmorillonite exhibited higher activity than pure Cr-doped ZnO.

Synthesis of Composite TiO2/Natural Cotton Cellulose Nanofiber with Photocatalytic Property

2014 ◽  
Vol 665 ◽  
pp. 393-396
Author(s):  
Qiu Yan Liu ◽  
Jing Li ◽  
Jun Cao ◽  
Chao Rong Li
Keyword(s):  
Photocatalytic Activity ◽  
Uv Light ◽  
Organic Pollutant ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Important Application ◽  
Anatase Structure ◽  
Uv Light Irradiation ◽  
Photocatalytic Activities ◽  
Hydrothermal Methods

TiO2/NCCN nanocomposites have been prepared by sol-gel and hydrothermal methods. Firstly, the NCCN was prepared by electrospinning technology, then the amorphous TiO2films were coated on the surface of the NCCN by a sol-gel method, and TiO2(anatase structure) nanoparticles could be fixed on the surface of NCCN by a hydrothermal method to get higher photocatalysis efficiency. The photocatalytic activities indicate that the TiO2/NCCN nanocomposites exhibited a good photocatalytic activity for photodegradation of methylthionine chloride (MO) solution under UV light irradiation, leading to an important application in photodegradation of organic pollutant.

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