scholarly journals Photocatalytic mineralisation of herbicide 2,4,5-trichlorophenoxyacetic acid: enhanced performance by triple junction Cu–TiO2–Cu2O and the underlying reaction mechanism

2015 ◽  
Vol 39 (1) ◽  
pp. 314-320 ◽  
Author(s):  
Xiaoqiang An ◽  
Huijuan Liu ◽  
Jiuhui Qu ◽  
Savio J. A. Moniz ◽  
Junwang Tang
Keyword(s):  
Photocatalytic Activity ◽  
Reaction Mechanism ◽  
Triple Junction ◽  
Photooxidation Mechanism ◽  
Trichlorophenoxyacetic Acid

A novel Cu–TiO2–Cu2O triple junction shows superior photocatalytic activity towards the degradation of toxic 2,4,5-trichlorophenoxyacetic acid herbicide, via a hole-dominant photooxidation mechanism.

scholarly journals Functionalization of hydroxyapatite derived from cockle (Anadara granosa) shells into hydroxyapatite–nano TiO2 for photocatalytic degradation of methyl violet

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
Is Fatimah ◽  
Della Fahrani ◽  
Tia Harmawantika ◽  
Imam Sahroni ◽  
Azlan Kamari ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Diffuse Reflectance ◽  
Methyl Violet ◽  
Gas Sorption ◽  
X Ray Diffraction ◽  
Positive Role ◽  
X Ray ◽  
Prepared Material ◽  
Photooxidation Mechanism ◽  
Anadara Granosa

AbstractPhotocatalyst of hydroxyapatite–nano TiO2 (HAp-nTiO2) was prepared from phosphatation of calcined cockle (Anadara granosa) shells followed by dispersion of nano TiO2 powder into HAp precipitate and calcination at 400 °C for 2 h. The prepared material was characterized using X-ray diffraction, scanning electron microscope–energy dispersive X-ray spectrophotometry, gas sorption analysis, and UV-Vis diffuse reflectance spectrophotometry. The photocatalytic activity of the material was evaluated for methyl violet degradation over photocatalysis and photooxidation mechanism. The results showed that the homogeneous dispersion of TiO2 in the HAp-nTiO2 composite was achieved, as seen in the X-ray diffraction analysis, diffuse reflectance UV-Vis, and gas sorption analyses. The physicochemical and photocatalytic character of the composite exhibited the positive role of HAp as TiO2 support in enhancing the photocatalytic activity with a higher turnover number and reusability property than that of pure TiO2. It was also noted that the HAp-nTiO2 composite demonstrated rapid methyl violet degradation over photooxidation rather than by photocatalytic mechanism.

Visible-light active tin selenide nanostructures: synthesis, characterization and photocatalytic activity

2017 ◽  
Vol 41 (23) ◽  
pp. 14689-14695 ◽  
Author(s):  
Muhammad Naeem Ashiq ◽  
Samia Irshad ◽  
Muhammad Fahad Ehsan ◽  
Sidra Rehman ◽  
Saima Farooq ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Reaction Mechanism ◽  
Visible Light ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Tin Selenide ◽  
Mechanism Of Degradation ◽  
Visible Light Active

Photocatalytic activity and proposed reaction mechanism of degradation of Methylene Blue dye by SnSe nanostructures.

Ga doped ZnO photonic crystals with enhanced photocatalytic activity and its reaction mechanism

2016 ◽  
Vol 195 ◽  
pp. 29-38 ◽  
Author(s):  
Xiaofang Li ◽  
Zengzeng Hu ◽  
Jiawen Liu ◽  
Danzhen Li ◽  
Xiaoyun Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Reaction Mechanism ◽  
Photonic Crystals ◽  
Doped Zno

Photocatalytic activity enhancement of g-C3N4/BiOBr in selective transformation of primary amines to imines and its reaction mechanism

2020 ◽  
Vol 394 ◽  
pp. 124934 ◽  
Author(s):  
Saranya Juntrapirom ◽  
Supanan Anuchai ◽  
Oraphan Thongsook ◽  
Soraya Pornsuwan ◽  
Puttinan Meepowpan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Reaction Mechanism ◽  
Primary Amines ◽  
Selective Transformation ◽  
Activity Enhancement

scholarly journals N/Fe/Zn co-doped TiO2 loaded on basalt fiber with enhanced photocatalytic activity for organic pollutant degradation

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 4942-4951
Author(s):  
Lingxiao Yang ◽  
Lanmiao Li ◽  
Longguo Li ◽  
Chao Liu ◽  
Jun Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Reaction Mechanism ◽  
Great Improvement ◽  
Organic Pollutant ◽  
Sol Gel ◽  
Basalt Fiber ◽  
Pollutant Degradation ◽  
Organic Pollutant Degradation ◽  
Calcination Method ◽  
Co Doped

The photocatalytic activity of N/Fe/Zn_TiO2@BF, synthesized by a combined sol–gel calcination method, showed great improvement for the degradation of RhB. The reaction mechanism of N/Fe/Zn_TiO2@BF for the degradation of RhB was proposed.

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