Enhanced photo-assisted ethanol electro-oxidation activity by using broadband visible light absorption of a graphitic C3N4/BiOI carrier

2019 ◽  
Vol 3 (2) ◽  
pp. 439-449 ◽  
Author(s):  
Jiayue Hu ◽  
Chunyang Zhai ◽  
Haifeng Gao ◽  
Lixi Zeng ◽  
Yukou Du ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Light Harvesting ◽  
Light Irradiation ◽  
Oxidation Activity ◽  
Visible Light Absorption ◽  
Electro Oxidation

A 2D/2D g-C3N4/BiOI heterojunction was used as a broad light harvesting support for the enhancement (16.9 times) of ethanol electro-oxidation under visible light irradiation.

Effective removal of colourless pollutants and organic dyes by Ag@AgCl nanoparticle-modified CaSn(OH)6 composite under visible light irradiation

2017 ◽  
Vol 41 (13) ◽  
pp. 5334-5346 ◽  
Author(s):  
Chao Liang ◽  
Cheng-Gang Niu ◽  
Xiao-Ju Wen ◽  
Shi-Feng Yang ◽  
Mao-Cai Shen ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Organic Dyes ◽  
Light Irradiation ◽  
Electron Hole ◽  
Visible Light Absorption ◽  
Effective Removal ◽  
Agcl Nanoparticles

The Ag@AgCl nanoparticles could broaden visible-light absorption of pure CSH and depress the recombination of photoinduced electron–hole pairs.

Na0.5Ce0.5MoO4 as a new light absorption material to efficiently degrade RhB under visible light irradiation

RSC Advances ◽  
2016 ◽  
Vol 6 (58) ◽  
pp. 52646-52655 ◽  
Author(s):  
Liming Yang ◽  
Fei Teng ◽  
Juan Xu ◽  
Yang Yang ◽  
Yandong Kan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
High Conductivity ◽  
Light Irradiation ◽  
Visible Light Absorption

Na0.5Ce0.5MoO4, with a high visible light absorption and a high conductivity, remarkably improves photocatalytic activity of Na0.5Ce0.5MoO4/MoO3 heterojunctions under visible light irradiation.

A novel ternary MQDs/NCDs/TiO2 nanocomposite that collaborates with activated persulfate for efficient RhB degradation under visible light irradiation

2021 ◽  
Author(s):  
Qian Zhang ◽  
Han Zhao ◽  
Yuming Dong ◽  
Xiangmiao Zhu ◽  
Xiang Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Absorption Capacity ◽  
Hole Transport ◽  
Light Irradiation ◽  
Pollutant Degradation ◽  
Electron Hole ◽  
Activated Persulfate

TiO2 nanosheets modified with dual MQDs/NCD quantum dots not only promote light absorption capacity and electron–hole transport but also collaborate well with activated persulfate for pollutant degradation.

ChemInform Abstract: Na0.5 Ce0.5 MoO4 as a New Light Absorption Material to Efficiently Degrade RhB under Visible Light Irradiation.

ChemInform ◽  
2016 ◽  
Vol 47 (34) ◽  
Author(s):  
Liming Yang ◽  
Fei Teng ◽  
Juan Xu ◽  
Yang Yang ◽  
Yandong Kan ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Light Irradiation

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.

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.

scholarly journals Photocatalytic removal of cyclohexane on visible light-driven gallium oxide/carbon nitride composites prepared by impregnation method

2015 ◽  
Vol 11 (3) ◽  
Author(s):  
Shu Chin Lee ◽  
Wee Shern Chew ◽  
Hendrik O. Lintang ◽  
Leny Yuliati
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Gallium Oxide ◽  
Carbon Nitride ◽  
Light Irradiation ◽  
Impregnation Method ◽  
Visible Light Absorption ◽  
Photocatalytic Removal ◽  
Visible Light Driven

Carbon nitride is a material of interest for photocatalytic reactions due to its catalytic and visible light absorption properties. However, the photocatalytic activity is still low. Hence, modifications must be carried out to improve the photocatalytic activity of carbon nitride. In this work, a series of gallium oxide/carbon nitride composites with various gallium to carbon ratios (Ga/C = 1-50 mol%) was prepared by impregnation method for removal of cyclohexane under visible light irradiation for the first time. The successful preparation of gallium oxide/carbon nitride composites was supported by several characterization techniques. X-ray diffraction (XRD) patterns and diffuse reflectance UV-visible (DR UV-vis) spectra revealed that the increased Ga/C ratio resulted in the increased formation of Ga2O3. Furthermore, all the prepared composite samples also showed visible light absorption up to about 430 nm. In the photocatalytic removal of cyclohexane under 6 h of visible light irradiation, sample with low loading of 1 mol% Ga/C improved the photocatalytic activity of carbon nitride for two times. The high activity obtained on the gallium oxide (1 mol%)/carbon nitride composite clearly suggested the presence of synergic effect between small amount of gallium oxide and carbon nitride when they were combined. This study showed that a visible light-driven gallium oxide/carbon nitride composite could be prepared by impregnating a small amount of gallium oxide on carbon nitride and the composite is a potential photocatalyst for removal of cyclohexane under visible light irradiation.  

Metallic nanoparticle-on-mirror: Multiple-band light harvesting and efficient photocurrent generation under visible light irradiation

Nano Energy ◽  
2021 ◽  
Vol 90 ◽  
pp. 106609
Author(s):  
Alexander B. Tesler ◽  
Takumi Sannomiya ◽  
Seyedsina Hejazi ◽  
Reza Mohammadi ◽  
Nicolas Vogel ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Harvesting ◽  
Light Irradiation ◽  
Metallic Nanoparticle ◽  
Photocurrent Generation ◽  
Multiple Band
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