Combustion synthesis and excellent photocatalytic degradation properties of W18O49

CrystEngComm ◽  
2015 ◽  
Vol 17 (31) ◽  
pp. 5889-5894 ◽  
Author(s):  
Pengqi Chen ◽  
Mingli Qin ◽  
Dezhi Zhang ◽  
Zheng Chen ◽  
Baorui Jia ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Combustion Synthesis ◽  
Photocatalytic Performance ◽  
Solution Combustion Synthesis ◽  
Solution Combustion ◽  
One Dimensional ◽  
Visible Light Driven ◽  
Degradation Properties

One-dimensional W18O49 nanoneedles were fabricated by solution combustion synthesis and exhibited an excellent visible light-driven photocatalytic performance.

scholarly journals Synthesis of BiSI/Ag2CO3 Composite Material for Photocatalytic Degradation of Rhodamine B under Visible Light

2021 ◽  
Author(s):  
Rui Zhang ◽  
ziyin chen ◽  
Chen Zhao ◽  
Kunlin Zeng ◽  
Lu Cai ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Electrochemical Impedance ◽  
Diffuse Reflectance Spectroscopy ◽  
Mass Ratio ◽  
X Ray ◽  
Visible Light Driven

Abstract A novel binary BiSI/Ag2CO3 photocatalyst with excellent visible light-driven photocatalytic performance was prepared. The products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) and electrochemical impedance spectroscopy (EIS). The photocatalytic activity of the samples were evaluated by photocatalytic degradation of rhodamine B(RhB) under the irradiation of visible light. The results showed that the BiSI improves the photocatalytic activity of BiSI/Ag2CO3. Moreover, when the mass ratio of BiSI in BiSI/Ag2CO3 composites was 40%, the as-prepared BiSI/Ag2CO3 composite exhibited the best photocatalytic activity for degrading RhB. Finally, the possible mechanism for photodegradation over the BiSI/Ag2CO3 composites is also proposed.

scholarly journals Enhanced Photocatalytic Degradation of Organic Dyes via Defect-Rich TiO2 Prepared by Dielectric Barrier Discharge Plasma

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 720 ◽  
Author(s):  
Yanqin Li ◽  
Wei Wang ◽  
Fu Wang ◽  
Lanbo Di ◽  
Shengchao Yang ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Sunlight Irradiation ◽  
Barrier Discharge Plasma ◽  
Ar Plasma ◽  
Degradation Properties

The dye wastewater produced in the printing and dyeing industry causes serious harm to the natural environment. TiO2 usually shows photocatalytic degradation of dye under the irradiation ultravilet light rather than visible light. In this work, a large number of oxygen vacancies and Ti3+ defects were generated on the surface of the TiO2 nanoparticles via Ar plasma. Compared with pristine TiO2 nanoparticles, the as-obtained Ar plasma-treated TiO2 (Ar-TiO2) nanoparticles make the energy band gap reduce from 3.21 eV to 3.17 eV and exhibit enhanced photocatalytic degradation of organic dyes. The Ar-TiO2 obtained exhibited excellent degradation properties of methyl orange (MO); the degradation rate under sunlight irradiation was 99.6% in 30 min, and the photocatalytic performance was about twice that of the original TiO2 nanoparticles (49%). The degradation rate under visible light (λ > 400 nm) irradiation was 89% in 150 min, and the photocatalytic performance of the Ar-TiO2 was approaching ~4 times higher than that of the original TiO2 nanoparticles (23%). Ar-TiO2 also showed good degradation performance in degrading rhodamine B (Rho B) and methylene blue (MB). We believe that this plasma strategy provides a new method for improving the photocatalytic activity of other metal oxides.

Effect of Hydrothermal Conditions on Crystal Structure, Morphology and Visible-Light Driven Photocatalysis of WO3 Nanostructures

2020 ◽  
Vol 993 ◽  
pp. 893-898
Author(s):  
Yang Si Liu ◽  
Xiao Li Xi ◽  
Zuo Ren Nie ◽  
Lin Yan Zhao ◽  
You Shu Fan
Keyword(s):  
Crystal Structure ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Hydrothermal Conditions ◽  
Hydrothermal Temperature ◽  
One Dimensional ◽  
Triclinic Phase ◽  
Structure Morphology ◽  
Visible Light Driven ◽  
Treatment Application

Tungsten trioxide (WO3) nanostructures were synthesized by a hydrothermal method, and the influence of essential hydrothermal conditions, temperature and time, on their crystal structure, morphology and visible-light driven photocatalysis was studied. The hydrothermal temperature was varied from 120 °C to 200 °C, and the hydrothermal time changed from 12 h to 32 h. The crystal structure, morphology and photocatalytic performance of WO3 nanostructures were characterized by XRD, SEM and UV-Vis. The crystal structure of WO3 nanostructure was triclinic phase and their morphology was mainly one dimensional nanorods. Methylene blue was used as the target to evaluate their photocatalytic performance under visible light (λ>420 nm). The photocatalytic results suggest the suitable hydrothermal conditions to synthesize WO3 nanostructures for the wastewater treatment application.

scholarly journals BiOCl/WS2 hybrid nanosheet (2D/2D) heterojunctions for visible-light-driven photocatalytic degradation of organic/inorganic water pollutants

RSC Advances ◽  
2020 ◽  
Vol 10 (42) ◽  
pp. 25073-25088 ◽  
Author(s):  
Waseem Ashraf ◽  
Shikha Bansal ◽  
Vikrant Singh ◽  
Sanmitra Barman ◽  
Manika Khanuja
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Water Pollutants ◽  
Visible Light Driven

Achieved highest photocatalytic performance of 2D/2D BiOCl/WS2 (2%) hybrid nanosheets for MG degradation (∼98.4% in 45 min) and Cr(vi) reduction.

Self-photoreduced Ag0-doped Ag(i)–organic frameworks with efficient visible-light-driven photocatalytic performance

CrystEngComm ◽  
2021 ◽  
Author(s):  
Bo Liu ◽  
Mengying Lv ◽  
Wei Jiang ◽  
Baihui Gao ◽  
Yuxin Li ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Visible Light Driven ◽  
Degradation Of Methyl Orange

A series of Ag0-doped Ag(i)organic frameworks have been constructed via a facile self-photoreduction strategy and can be applied as efficient photocatalysts for the photocatalytic degradation of methyl orange.

Synthesis of Bi2MoO6/BiOI Composites for Visible Light Driven Photocatalytic Degradation of Methylene Blue

2021 ◽  
Vol 13 (4) ◽  
pp. 545-549
Author(s):  
You Zhang ◽  
Ning Xie ◽  
Lu Zhang ◽  
Fenghuang Wu ◽  
Zifei Xie ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Solvothermal Method ◽  
Photocatalytic Efficiency ◽  
Photogenerated Electrons ◽  
Visible Light Driven ◽  
Photocatalytic Performances

Bi2MoO6/BiOI composites were synthesized by solvothermal method and photocatalytic performances were evaluated by degrading methylene blue (MB). Experiment results show that Bi2MoO6/0.5BiOI has the best photocatalytic efficiency for eliminating 92% MB in 2 h under the excitation of visible light. Such superior photocatalytic performance is due to the significantly enhanced ability to absorb visible light and separated efficiency of photogenerated electrons and holes.

One-pot combustion fabrication of grain-like mesoporous intra-heterostructure BixOyClz nanophotocatalyst with substantial solar-light-driven degradation of antibiotic ofloxacin: influence of various fuels

2018 ◽  
Vol 8 (16) ◽  
pp. 4052-4069 ◽  
Author(s):  
Maryam Shabani ◽  
Mohammad Haghighi ◽  
Davood Kahforoushan
Keyword(s):  
Photocatalytic Degradation ◽  
Combustion Synthesis ◽  
Low Temperatures ◽  
Solution Combustion Synthesis ◽  
Solar Light ◽  
Solution Combustion ◽  
One Pot

Photocatalytic degradation of ofloxacin over the intra-heterostructure of grain-like BixOyClz nanophotocatalyst fabricated via one-pot solution combustion synthesis at low temperatures.

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