One-step solvothermal synthesis of N-doped TiO2 nanoparticles with high photocatalytic activity in the reduction of aqueous Cr(VI)

2014 ◽  
Vol 25 (2) ◽  
pp. 283-286 ◽  
Author(s):  
Jing Li ◽  
Min Yang ◽  
Zun-Biao Jiang
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Nanoparticles ◽  
Solvothermal Synthesis ◽  
High Photocatalytic Activity ◽  
Doped Tio2 ◽  
One Step

scholarly journals Photodegradation of spent wash, a sugar industry waste, using vanadium-doped TiO2 nanoparticles

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20394-20405 ◽  
Author(s):  
Shrikant P. Takle ◽  
Sonali D. Naik ◽  
Supriya. K. Khore ◽  
Siddhanath A. Ohwal ◽  
Namdev M. Bhujbal ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Nanoparticles ◽  
High Stability ◽  
Sugar Industry ◽  
Sol Gel ◽  
High Photocatalytic Activity ◽  
Doped Tio2 ◽  
Spent Wash ◽  
Industry Waste ◽  
Red Dye

A sol–gel-derived V-TiO2 photocatalyst exhibited high photocatalytic activity for the degradation of spent wash and Jakofix red dye under natural sunlight with high stability.

scholarly journals Characterization, X-ray Absorption Spectroscopic Analysis and Photocatalytic Activity of Co/Zn Co-Doped TiO2 Nanoparticles Synthesized by One-Step Sonochemical Process

Crystals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1254
Author(s):  
Wanichaya Mekprasart ◽  
Sorapong Pavasupree ◽  
C. K. Jayasankar ◽  
Balaji Rao Ravuri ◽  
Chakkaphan Wattanawikkam ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Nanoparticles ◽  
Visible Region ◽  
Sonochemical Method ◽  
Edge Structure ◽  
Doped Tio2 ◽  
X Ray ◽  
One Step ◽  
X Ray Absorption ◽  
Co Doped

A novel one-step preparation of sonochemical method was applied to synthesize Co/Zn co-doped TiO2 nanoparticles using a sonicator of 750 W, 20 kHz for 30 min at room temperature. The formation of the anatase TiO2 phase for all as-prepared samples was observed from XRD results with a crystalline size in nanoscale. The use of ultrasound allowed for the successful doping of both Co and Zn into the TiO2 lattice, which was confirmed by Synchrotron light including X-ray near edge structure (XANES) and Extended X-ray absorption fine structure (EXAFS) spectroscopy. Ti K-edge, Co K-edge, and Zn K-edge XANES spectra exhibited the dominating +4, +2, and +2 valence state of Ti, Co, and Zn in as-prepared samples, respectively. A detailed XANES and EXAFS data analysis give strong evidence that the Co/Zn dopants partially replace the Ti atom of the TiO2 host. The Co/Zn co-doping extends the light absorption of the host to the visible region and restricts the e+/h+ recombination. The photocatalytic activity of samples was tested for degradation of Rhodamine B dye solution under visible light irradiation. The as-synthesized of the co-doped catalyst was presented as highly efficient, with 2.5 and 5 times dye degradation compared with single-doped and bare TiO2.

scholarly journals Facile Synthesis of Anatase–Rutile Diphase N-doped TiO2 Nanoparticles with Excellent Visible Light Photocatalytic Activity

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1126
Author(s):  
Jun Liu ◽  
Xuli Li ◽  
Haobo Hou ◽  
Min Zhou
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Raw Materials ◽  
Analytical Techniques ◽  
Active Species ◽  
Chemical Compositions ◽  
Contaminant Removal ◽  
Doped Tio2 ◽  
One Step

To further boost the charge separation and photocatalytic activity of TiO2 under visible light, the anatase–rutile mixed-phase nitrogen-doped (N-doped) TiO2 nanoparticles were successfully synthesized through a facile one-step calcining procedure using TiN as raw materials. The crystal phases, morphologies, chemical compositions, textural structures, and optical properties of as-obtained N-doped TiO2 were characterized by the corresponding analytical techniques. The photocatalytic activities of as-fabricated samples were evaluated by degrading 4-chlorophenol (4-CP) and methylene blue (MB) aqueous solution under visible light irradiation. The results revealed that the ratio of rutile to anatase increased with the improvement of sintering temperature, and the sample prepared at 500 °C had the best photocatalytic activity. This might be because it possessed the most appropriate rutile/anatase proportion as well as the nitrogen doping. The transient photocurrent responses, photoluminescence spectra (PL) measurements, and active species trapping experiments were implemented to disclose the photocatalytic mechanism. This work will provide a further insight into the synthesis of highly efficient N-doped TiO2 photocatalysts for organic contaminant removal.

scholarly journals INFLUENCE OF CALCINATION TEMPERATURE ON STRUCTURAL-DIMENSIONAL CHARACTERISTICS OF C,S-DOPED TiO2 NANOSTRUCTURES AND THEIR PHOTOCATALYTIC ACTIVITY IN THE CEFTAZIDIME AND DOXYCYCLINE PHOTODEGRADATION PROCESSES

2020 ◽  
Vol 86 (10) ◽  
pp. 95-119
Author(s):  
Natalia Romanovska ◽  
Petro Manoryk ◽  
Oleksandr Selyshchev ◽  
Pavlo Yaremov ◽  
Olexander Shylzshenko ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Specific Surface ◽  
Crystallite Size ◽  
Tio2 Nanoparticles ◽  
Calcination Temperature ◽  
Sol Gel ◽  
High Photocatalytic Activity ◽  
Doped Tio2 ◽  
Different Temperatures ◽  
Tio2 Nanostructures

Mesoporous C, S-doped TiO2 nanostructures were obtained by solvothermal sol-gel method followed by calcination at different temperatures. It was found that with increasing calcination temperature, the crystallite size remains in the same range of 9–10 nm, while the morphology of TiO2 nanoparticles significantly changes, and the anatase content increases from 42% to 95%. At the same time the nanoparticle size (from 85 to 45 nm), the specific surface area (200–130 m2/g), the mesoporous area (from 170 to 70 m2/g), and the carbon (0.80–0.41%) and sulfur (1.39–0.89%) contents decrease. Varying the calcination temperature allows TiO2 nanostructures to be obtained with a certain balance of these structural-dimensional characteristics that provides high photocatalytic activity in the processes of ceftazidime and doxycycline photodegradation.

A new fabrication of AgX (X = Br, I)–TiO2 nanoparticles immobilized on polyacrylonitrile (PAN) nanofibers with high photocatalytic activity and renewable property

RSC Advances ◽  
2015 ◽  
Vol 5 (111) ◽  
pp. 91457-91465 ◽  
Author(s):  
Dandan Yu ◽  
Jie Bai ◽  
Haiou Liang ◽  
Junzhong Wang ◽  
Chunping Li
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Nanoparticles ◽  
Solvothermal Synthesis ◽  
Physical Adsorption ◽  
High Photocatalytic Activity ◽  
Solid Reaction ◽  
Electrospinning Technique ◽  
Gas Solid Reaction

AgX–TiO2/PAN (X = Br, I) photocatalyst was synthesized by the electrospinning technique, solvothermal synthesis, physical adsorption and gas/solid reaction.

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