Photocatalytic degradation of organic pollutants by shape selective synthesis of β-Ga2O3 microspheres constituted by nanospheres for environmental remediation

2015 ◽  
Vol 3 (6) ◽  
pp. 2617-2627 ◽  
Author(s):  
K. Girija ◽  
S. Thirumalairajan ◽  
Valmor R. Mastelaro ◽  
D. Mangalaraj
Keyword(s):  
Photocatalytic Degradation ◽  
Ultraviolet Light ◽  
Organic Pollutants ◽  
Environmental Remediation ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Controlled Synthesis ◽  
Selective Synthesis ◽  
Shape Selective

Morphology controlled synthesis of β-Ga2O3 microspheres comprised of nanospheres exhibit excellent ultraviolet light photocatalytic performance towards RhB and MB organic dyes.

Mg0.8Zn0.2O microspheres: preparation, characterization and application for degrading organic dyes

CrystEngComm ◽  
2020 ◽  
Vol 22 (7) ◽  
pp. 1273-1285 ◽  
Author(s):  
Yajun Zheng ◽  
Liyun Cao ◽  
Gaoxuan Xing ◽  
Jianfeng Huang ◽  
Zhiping Zhang
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Environmental Remediation ◽  
Organic Dyes

Photocatalytic degradation of organic pollutants in wastewater is one of the most promising strategies for environmental remediation, and photocatalysts as the prerequisite have received considerable attention.

scholarly journals Microscale flower-like magnesium oxide for highly efficient photocatalytic degradation of organic dyes in aqueous solution

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7338-7348 ◽  
Author(s):  
Yajun Zheng ◽  
Liyun Cao ◽  
Gaoxuan Xing ◽  
Zongquan Bai ◽  
Jianfeng Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Degradation ◽  
Magnesium Oxide ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Precipitation Method ◽  
Highly Efficient

Flower-like MgO microparticles with excellent photocatalytic performance in degradation of various organic dyes were synthesized by a facile precipitation method via the reaction between Mg2+ and CO32− at 70 °C.

Ce-/S-codoped TiO2/Sulfonated graphene for photocatalytic degradation of organic dyes

2014 ◽  
Vol 2 (33) ◽  
pp. 13565-13570 ◽  
Author(s):  
Yingying Fan ◽  
Dongxue Han ◽  
Bin Cai ◽  
Weiguang Ma ◽  
Mohsin Javed ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Synergistic Effects ◽  
Composite Action ◽  
Codoped Tio2 ◽  
Sulfonated Graphene

An improved photocatalytic performance of Ce/S–TiO2/SGE based on the synergistic effects of Ce- and S-codoping and the composite action between TiO2 NPs and SGE.

scholarly journals Highly efficient core–shell Ag@carbon dot modified TiO2 nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

RSC Advances ◽  
2020 ◽  
Vol 10 (45) ◽  
pp. 26639-26645
Author(s):  
Jing Jin ◽  
Wei Song ◽  
Ning Zhang ◽  
Linjia Li ◽  
Hao Liu ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Photocatalytic Performance ◽  
Core Shell ◽  
Tio2 Nanofibers ◽  
Carbon Dot ◽  
Highly Efficient

The possible mechanism of enhanced photocatalytic performance of Ag@CDs–TiO2 hybrid NFs.

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.

scholarly journals A Review on Synthesis and Characterization of Ag2O Nanoparticles for Photocatalytic Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-15 ◽  
Author(s):  
Workneh M. Shume ◽  
H. C. Ananda Murthy ◽  
Enyew Amare Zereffa
Keyword(s):  
Visible Light ◽  
Organic Pollutants ◽  
Photoelectron Spectroscopy ◽  
Metal Ion ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Metal Oxide Nanoparticles ◽  
Ion Concentration ◽  
X Ray ◽  
Ag2o Nanoparticles

Even though the photocatalytic processes are a good technology for treatment of toxic organic pollutants, the majority of current photocatalysts cannot utilize sunlight sufficiently to realize the decomposition of these organic pollutants. As stated by various researchers, metal oxide nanoparticles have a significant photocatalytic performance under visible light source. Among various chemical and physical methods used to synthesize nanostructured silver oxide, green synthetic route is a cheaper and environmental friendly method. To confirm the optimum production of Ag2O NPs, effect of pH, extract concentration, metal ion concentration, and contact time were optimized. The structure, morphology, crystallinity, size, purity, elemental composition, and optical properties of obtained Ag2O NPs were characterized by different techniques, such as scanning electron microscopy (SEM), transmission electron microscope (HRTEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and UV-visible spectrophotometer accordingly as revealed by our literature review. The photocatalytic performance of the synthesized nanocrystalline Ag2O by photocatalytic degradation of organic dyes under visible light irradiation has been discussed thoroughly in this review. Many past studies revealed that organic dyes and pollutants are decomposed completely by green synthesized Ag2O NPs under irradiation of visible light.

scholarly journals Y2O3:Yb3+, Tm3+/ZnO composite with a heterojunction structure and upconversion function for the photocatalytic degradation of organic dyes

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24044-24053
Author(s):  
Yuehui Tai ◽  
Yu Zhang ◽  
Jinlong Sun ◽  
Fuyue Liu ◽  
Haoran Tian ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Organic Dyes ◽  
Heterojunction Structure

Upconversion heterojunction synergistic effect for photocatalytic degradation of organic pollutants.

scholarly journals Environmental Remediation of Toxic Organic Pollutants Using Visible-Light-Activated Cu/La/CeO2/GO Nanocomposites

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6143
Author(s):  
Dhanapal Vasu ◽  
Yongsheng Fu ◽  
Arjunan Karthi Keyan ◽  
Subramanian Sakthinathan ◽  
Te-Wei Chiu
Keyword(s):  
Visible Light ◽  
Organic Pollutants ◽  
Environmental Remediation ◽  
Organic Dyes ◽  
Industrial Applications ◽  
The Novel ◽  
Sunset Yellow ◽  
Organic Contamination ◽  
Electron Hole

Environmental pollution is a major threat that increases day by day due to various activities. A wide variety of organic pollutants enter the environment due to petrochemical activities. Organic contamination can be unsafe, oncogenic, and lethal. Due to environmental issues worldwide, scientists and research communities are focusing their research efforts on this area. For the removal of toxic organic pollutants from the environment, photocatalysis-assisted degradation processes have gained more attention than other advanced oxidation processes (AOPs). In this manuscript, we report a novel photocatalysis of copper and lanthanum incorporating cerium oxide (CeO2) loaded on graphene oxide (Cu/La/CeO2/GO) nanocomposites successfully synthesized by hydrothermal techniques. XRD results showed the presence of dopant ions and a crystalline structure. FESEM images showed that the surface morphology of the synthesized nanocomposites formed a rod-like structure. The highlight of this study is the in-situ synthesis of the novel Cu/La/CeO2/GO nanocomposites, which manifest higher photodegradation of harmful organic dyes (Rhodamine B (RhB), Sunset Yellow (SY), and Cibacron Red (CR)). In Cu/La/CeO2/GO nanocomposites, the dopant materials restrict the rapid recombination of photoinduced electron–hole pairs and enhance the photocatalytic activity. The degradation percentages of RhB, SY, and CR dye solution are 80%, 60%, and 95%, respectively. In summary, the synthesized nanocomposites degrade toxic organic dyes with the help of visible light and are suitable for future industrial applications.

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