N-CND modified NH2-UiO-66 for photocatalytic CO2 conversion under visible light by a photo-induced electron transfer process

2019 ◽  
Vol 55 (33) ◽  
pp. 4845-4848 ◽  
Author(s):  
Liyong Chen ◽  
Fengyang Yu ◽  
Xiaoshuang Shen ◽  
Chunying Duan
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Transfer Process ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Co2 Conversion ◽  
Electron Transfer Process ◽  
Photo Induced Electron Transfer ◽  
Photocatalytic Co2 Conversion

A N-CNDs/NH2-UiO-66 composite exhibits enhanced photocatalytic activity for CO2 conversion under visible light irradiation. This is attributed to a photo-induced electron transfer process from the light absorption antenna of the N-CNDs to the NH2-UiO-66 photocatalyst.

Understanding the electron transfer process in ZnO–naphthol azobenzoic acid composites from photophysical characterisation

2016 ◽  
Vol 18 (32) ◽  
pp. 22179-22187 ◽  
Author(s):  
Leena George ◽  
Athira K. Kunhikannan ◽  
Rajith Illathvalappil ◽  
Divya Ottoor ◽  
Sreekumar Kurungot ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Transfer Process ◽  
Light Absorption ◽  
Organic Molecules ◽  
Semiconductor Nanoparticles ◽  
Electron Transfer Process ◽  
Visible Light Absorption ◽  
Catalytic Sites ◽  
Surface Modified

Semiconductor nanoparticles surface modified with organic molecules capable of visible light absorption and effectively transferring the electrons to the catalytic sites have the potential to be good photocatalysts.

Efficient organic degradation under visible light by α-Bi2O3 with a CuO -assistant electron transfer process

2015 ◽  
Vol 163 ◽  
pp. 267-276 ◽  
Author(s):  
Hai-Ying Jiang ◽  
Guigao Liu ◽  
Mu Li ◽  
Jingjing Liu ◽  
Wenbin Sun ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Transfer Process ◽  
Electron Transfer Process ◽  
Organic Degradation

A simple method to synthesise Ag-doped TiO2 photocatalysts with different Ag0:Ag2O atomic ratios for enhancing visible-light photocatalytic activity

2017 ◽  
Vol 41 (8) ◽  
pp. 475-483 ◽  
Author(s):  
C. Chen ◽  
X. F. Lei ◽  
M. Z. Xue
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Separation Efficiency ◽  
Visible Region ◽  
Light Irradiation ◽  
Electron Hole ◽  
X Ray

Pure anatase TiO2 photocatalysts with different Ag contents were prepared via a simple sol-gel method. The as-prepared anatase Ag-doped TiO2 photocatalysts were characterised by X-ray diffraction, transmission electron microscopy, UV-Vis diffuse reflectance spectra, photoluminescence spectroscopy, X-ray photoelectron spectroscopy, thermal gravity and differential thermal analysis, scanning electron microscopy and N2 adsorption–desorption measurements (BET). Compared with pure TiO2, Ag-doped anatase TiO2 photocatalysts exhibited not only increases in light absorption in the visible region, the separation efficiency of electron–hole pairs and surface area, but also inhibition of the titania phase transition from anatase to rutile. Photoreduction results showed that Ag-doped anatase TiO2 photocatalysts have greatly improved photocatalytic activity, compared with pure TiO2, and the reduction of Cr(VI) under visible light irradiation was much higher than that of pure TiO2. The optimum Ag content was 1.0 mol%, which led to the complete reduction of Cr(VI) under visible light irradiation (λ > 420 nm) for 4 h. The enhanced photocatalytic activity was attributed to the synergic effect of the pure anatase structure, and the increased light absorption in the visible region, separation efficiency of electron–hole pairs and atomic ratio of Ag0:Ag2O.

Visible-light-induced phenylchalcogenyl-oxygenation of allenes having aryl or electron withdrawing substituents with ambient air as a sole oxidant

2016 ◽  
Vol 14 (48) ◽  
pp. 11415-11425 ◽  
Author(s):  
Gullapalli Kumaraswamy ◽  
Swargam Vijaykumar ◽  
Kukkadapu Ankamma ◽  
Vykunthapu Narayanarao
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Transfer Process ◽  
Stereoselective Synthesis ◽  
Ambient Air ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Electron Transfer Process ◽  
Electron Withdrawing Substituents

The stereoselective synthesis of α-phenylselenyl- or telluryl β-aryl acrylaldehydes/ketones from aryl allenes/1,3-diarylallene by an oxidative photo-induced single electron transfer process using benign ambient air as a sole oxidant was achieved.

scholarly journals Synergetic Effect of In and Ag Co-Doped ZnS for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

2014 ◽  
Vol 1024 ◽  
pp. 368-371 ◽  
Author(s):  
Melody Kimi ◽  
Leny Yuliati ◽  
Mustaffa Shamsuddin
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Synergetic Effect ◽  
Band Gap Energy ◽  
Light Irradiation ◽  
Efficient Charge ◽  
Co Doped

In and Ag co-doped ZnS photocatalysts were successfully prepared by hydrothermal method to extend the light absorption of ZnS to the visible light region. The concentration of In was constant while for Ag was varied to optimize the photocatalytic activity. The In and Ag co-doped ZnS photocatalysts showed smaller band gap energy compared to single doped In (0.1)-ZnS and undoped ZnS. The photocatalytic activity of In and Ag co-doped ZnS photocatalysts was evaluated from the amount of hydrogen produced. The hydrogen evolution rate from aqueous solution containing Na2SO3 and Na2S as sacrificial reagent under visible light irradiation obtained from In and Ag co-doped ZnS is higher compared to the single doped In (0.1)-ZnS when optimum amount of Ag dopant was added. The highest photocatalytic activity is observed for In (0.1),Ag (0.01)-ZnS with hydrogen production rate of 26.82 μmol/h. The higher performance of this photocatalyst is ascribed to the extended visible light absorption, efficient charge separation as well as improved electron transfer associated with synergistic effect of appropriate amount of In and Ag co-doped ZnS.

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