La and F co-doped Bi2MoO6 architectures with enhanced photocatalytic performance via synergistic effect

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71052-71060 ◽  
Author(s):  
Danjun Wang ◽  
Huidong Shen ◽  
Li Guo ◽  
Chan Wang ◽  
Feng Fu ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Photocatalytic Performance ◽  
Photocatalytic Mechanism ◽  
Photocatalytic Activities ◽  
Co Doped

Solvothermally-synthesized La and F co-doped Bi2MoO6 architectures showed significantly enhanced photocatalytic activities and the photocatalytic mechanism was proposed.

La and/or Y Doped TiO2: Facile Synthesis and Enhanced Photocatalysis

2012 ◽  
Vol 463-464 ◽  
pp. 290-294
Author(s):  
Hong Tao Gao ◽  
Wen Chao Liu
Keyword(s):  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Decisive Role ◽  
Pure Tio2 ◽  
Photocatalytic Decomposition ◽  
X Ray Diffraction ◽  
X Ray ◽  
Photocatalytic Activities ◽  
Uv Visible ◽  
Co Doped

Nanocrystalline samples of titanium dioxide (TiO2) monodoped or co-doped with La and Y were prepared by a facile method, using Ti(OC4H9)4as the precursor. All products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and UV-visible diffuse reflectance spectra (DRS), respectively. Photocatalytic activities of the products were assessed by the photocatalytic decomposition of methyl orange (MO). Both of undoped TiO2and doped-TiO2 samples exclusively consist of primary anatase crystallites, which further form spherical aggregates with diameters ranging from 14 to 21 nm. The photocatalytic performances of rare earth (RE) element co-doped samples were much higher than that of single doped and pure TiO2 under UV-visible-light irradiation. It indicated that a strong La-Y synergistic interaction appeared to play a decisive role in driving the excellent photocatalytic performance of LYT.

scholarly journals Synergistic Effect of Ag and Cu Codoping on the Structural, Optical and Photocatalytic Performance of BiVO4

2021 ◽  
Author(s):  
Maheskumar Velusamy ◽  
Zhenyi Jiang ◽  
Yanming Lin ◽  
Vidhya Bhojan ◽  
Sasikumar S
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Photocatalytic Performance ◽  
Superoxide Radical ◽  
Life Time ◽  
Charge Carriers ◽  
Radical Species ◽  
Excellent Photocatalytic Activity ◽  
Superior Property ◽  
Co Doped

Abstract In this work, Ag or/and Cu doped BiVO 4 samples has been prepared successfully via hydrothermal and photoreduction method. Ag/Cu co-doped BiVO 4 exhibited high photocatalytic degradation efficiency in the degradation of methylene blue (MB) and displayed a significantly superior property compared to pure BiVO 4, as well as only Ag or Cu doped BiVO 4 upon exposure to visible light source. Interestingly, we found that enhanced photocatalytic activity of Ag/Cu co-doped BiVO 4 arises from the synergistic effect between the Ag and Cu co-doped BiVO 4 with smaller crystalline size, improved photocatalytic reaction sites, improved life-time and enhanced separation of photogenerated charge carriers which are confirmed using different characterization techniques. The degradation of MB was mainly indicated by superoxide radical species as confirmed by the trapping experiment. Based on the collective results obtained an excellent photocatalytic activity in Ag/Cu co-doped BiVO 4 has been confirmed.

Synergistic effect of NS co-doped TiO2 adsorbent for removal of cationic dyes

2021 ◽  
pp. 105480
Author(s):  
Ruhma Rashid ◽  
Iqrash Shafiq ◽  
Muhammad Javid Iqbal ◽  
Maira Shabir ◽  
Parveen Akhter ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Cationic Dyes ◽  
Doped Tio2 ◽  
Co Doped

Synergistic Effect of Eu3+ and Sm3+ Co-Doping on Photocatalytic Activity of TiO2 Nanoparticles

2011 ◽  
Vol 197-198 ◽  
pp. 891-894 ◽  
Author(s):  
Cheng Zhi Jiang ◽  
Xu Dong Lu
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Sol Gel ◽  
Blue Shift ◽  
Nano Particles ◽  
Absorption Profile ◽  
Co Doping ◽  
The Matrix ◽  
Co Doped ◽  
The Eu

Pure TiO2, Eu3+and Sm3+co-doping TiO2composite nanoparticles have been prepared by sol-gel method and characterized by the techniques such as XRD, SEM and DRS. The photocatalytic degradation of methylene blue (MB) in aqueous solution was used as a probe reaction to evaluate their photocatalytic activity. The matrix distortion of TiO2nano-particles increases after co-doping of Eu3+and Sm3+and a blue-shift of the absorption profile are clearly observed. The results show that co-doping of Eu3+and Sm3+inhibits the phase transformation of TiO2from anatase to rutile, decreases the diameter of TiO2nano-particles and significantly enhance the photocatalytic activity of TiO2. The Eu3+and Sm3+co-doped into TiO2nano-particles exert a synergistic effect on their photocatalytic activity.

Preparation and Photocatalytic Performance Study of Na+/K+-WO3 by Ultrasonic Micro Method

2014 ◽  
Vol 887-888 ◽  
pp. 693-697
Author(s):  
Xian Zhen Diao ◽  
Zhu Lin Peng
Keyword(s):  
Alkali Metals ◽  
Photocatalytic Performance ◽  
Sodium Tungstate ◽  
Raw Material ◽  
Performance Study ◽  
Doping Amount ◽  
Photocatalytic Activities ◽  
Micro Emulsion ◽  
Methyl Orange Concentration ◽  
Degradation Time

With n-butanol/CTAB/cyclohexane as micro emulsion system, sodium tungstate and hydrochloric acid as raw material, alkali metals (Na+, K+) nitrate as dopant, pure WO3、Na+-WO3, K+-WO3 and Na+/K+-WO3 powders were prepared by ultrasonic micro-emulsion method; And performances of samples were analyzed by visible spectrophotometer. Photocatalytic activity study show that alkali metal sodium ion and potassium ion doped, photocatalytic activities of WO3 are improved markedly; When doping amount is 1.0%, catalyst amount is 2g/L, methyl orange concentration is 20mg/L, degradation time is 80 min, Na+-WO3 powder has the best photocatalytic degradation performance at 460nm, and the degradation rate is as high as 65%.

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